DECEMBER 1983 MODELS $ L . 50

BUILDER volume 13, number143 BYRON ORIGINALS ! tec Mi Grott bn SU4S P* PjJ** ^

Joeechcrafi G-17S Now Availabli in Authentic r 1/5 Scale! SPECIFICATIONS • Span...... 77 •Length...... 65 •Wing Area...... 1600 sq. ii •W'ing Loading...... 25 oz. per s •Ready-to-Hy Weight...... 19-20 lb«| •P ow er...... 35 Quadra or comparabl engine •Channels required...... 5 (6 w /retract«

Rugged, Custom TailoredJIetracts_____ .<^åtÉh rigfl9 r' '■' 'j i r ^ top value for dollars plus The Staggerw ing’s ^ j many unique design features to unique design re- j minimize building time. Anyone famil­ quired a special re- —^ jfcl iar with the complexities involved in scratch tract system unlike building a model like the Staggerwing will be amazed by the time, anything else on the J labor and money savings made possible by our state-of-the-art market. This was ac- Jr", J l 1 fiberglass and detailed, injection molded and complished in the λ I control surfaces. All fuselage and wing stringer detailing has been true Byron Originals / Mi j painstakingly included in our molds to enhance scale realism in all style, rnmpletel ' I production pru-ts. Even the distinctive concave shape of the fuse with sequencing doors, retractable tail belly has been incorporated in our tooling. wheel plus other scale appointments.

State-of-lhe Arts Assembly Concepts Well engineered assembly concepts have eliminated the guesswork normally en­ countered when building such models. For example, the die-cut fuselage spars are designed and pre-drilled to ensure fast yet precise positioning of wing attaching hardware, retract system and all radio gear. Even the firewall is removable to allow easy access to the entire fuselage interior and equipment. Plug-In Wings and Control Linkages-Transport Convenience In a matter of seconds, a 77” wing span becomes 17‘Λ” simply by removing the four wing panels. Removal of wing panels automatically disengages and linkages. Simply re­ insert wings to regain con­ nections. Constant control surface trim is maintained since internal servo control linkages are never disturbed.

WRITE OR CALL LOR LURTHER DETAILS ABOUT Classic Design...Plus Performance OUR NEW STAGGERWING G-17S AND ABOUT OUR The Staggerwing performs exceptionally SPECIAL FACTORY DIRECT PRICES. well at both ends of the flight envelope with a standard Quadra 35 or similar For fast, factory direct delivery, call -· K —''\ engine. It lands gently and predictably Byron Originals, Monday through Fri­ VISA M a s te rC a rd like a Telemaster, yet is fast and aerobatic day, 8 a.m . to 5 p.m . C .S.T . j : enough to satisfy the seasoned pattern iSrnd S2.00 (or drlatlrd Staggrrwmg info packet). flyer. Bvron Originals. P.O. Box 279. Ida Grove, Iowa 51445, Ph: (712) 364-3165 Actual photo of model trimmed with Metallic Charcoal MonoKote"

Top Fiite’s Antares...the ultimate high- tech, flat-wing R/C sailplane. The Antares is easy to build and fly for the Sunday flyer yet answers the needs of experi­ enced pilots and multi-task competitors. Designed by Scott Christensen, co-founder of The League of Silent Flight, the Antares employs state of the art aero­ dynamics for an extremely nigh glide ratio, a fantastic speed range and response to the lightest lift. Antares...technical superiority and excitement in the skies. Aerodynamic Features: · Flat-wing configuration · Unique Eppler 193/205 Variable camber airfoil · , flaps, and · Towering flapped launches with 6- or 12-volt winches or high-starts. Construction Features: · Quick-building wings are fully sheeted (top) with webbed spruce spars top and bottom · Fuselage is top quality balsa/ply/spruce · All parts cleanly die-cut for accurate, easy assembly • Generous radio compartment · Complete hardware package · Compre­ hensive, full-size, rolled plans and easy to follow instructions. Top Fiite’s Antares...The Thermal Duration System.

SPECIFICATIONS:

U.S. Metric W ingspan...... 99.75 In. 2533.6 mm Wing Area...... 867 sq.in. 55.93 dm 2 Length...... 47.5 in. 1206.5 mm Flying Wt...... 3to5'Albs. 1119-2144.8 gm (ballast space provided) Wing Loading .. 8.91 ozs./sq.ft. 20.01-38.34 gm/dm2 TOP FLITE MODELS, INC. (no ballast) 2635 S. Wabash Ave. Radio Equip. ... 3- or 4-channel Kit No...... RC-31 Chicago, Illinois 60616 For our latest catalog, including MonoKote’ color chart, send $1.00 to Top Rite. Write for free details on MonoKote I Video Tape rentals. / DECEMBER MODEL 1983 BUILDER volume 13, number 143 621 West Nineteenth St., Box 10335, Costa Mesa, CA 92627-0132 Phone: (714) 645-8830

STAFF TABLE OF CONTENTS EDITOR/PUBLISHER Wm. C Northrop, Jr.

GENERAL MANAGER FEATURES Anita Northrop W O R K B E N C H , Bill Northrop...... 6 ASSISTANT GENERAL MANAGER DEAR J A K E ...... 6 Dawn Johnson OVER THE COUNTER ...... 7 PRODUCTION MANAGER Bill Forrey IM A A /ID A GROVE FUN-FLY FESTIVAL, Bill Northrop...... 10 PRODUCTION ARTIST FAI/US SCALE TEAM SELECTION, cliff Tacie ...... 12 Howard Millman

ELECTRIC POWER, Mitch Poling...... 14 DRAWINGS BY CH O PPER C H A T T E R , Ray Hostetler...... 20 Al Patterson BIG BIRDS, Al Alman...... 22 ACCOUNTING DEPT. MANAGER Michael Whitney Y O R K F A I/F 3B W O R L D C H A M P S , Bill Forrey ...... 24 SUBSCRIPTIONS R/C SOARING, Bill Forrey...... 27 Jo Anne Glenn B Y R O N O R IG IN A L S C A P 21 IN R EVIEW , Dick Moloney ...... 32 CONTRIBUTING EDITORS ELECTRONICS CORNER, Floy Mare/...... 34 Al Alman Eloy Marez FUEL LINES, Joe Klause...... 35 Jerry Dunlap Walt Mooney Bill Forrey Mitch Poling H O W TO FLY PATTERN, Dick Hanson...... 36 Bill Hannan John Pond PLUG SPARKS, John Pond ...... 37 Dick Hanson Fernando Ramos R /C C AR S, Dan Rutherford ...... 44 Mike Hazel Dan Rutherford Ray Hostetler John Smith R /C BO A TS , Jerry Dunlap ...... 46 Ken Johnson Bob Stálick H A N N A N ’S H A N G A R , Bill Hannan...... 48 Joe Klause FREE FLIG H T SCALE, Fernando Ramos...... 50 ADVERTISING FREE FLIG H T, Bobstalick...... 54 REPRESENTATIVES IN D O O R , Ken Johnson...... 57 Bill Northrop Home Office, Costa Mesa CONTROL LINE AT THE NATIONALS, Rich von Lopez...... 60 Al Novotnik 4 Beverly PI., Norwalk, CT 06850 Bus. Phone (203) 847-7478

CONSTRUCTION MODEL BUILDER (ISSN 0194 7079) is published monthly by RCMB INC.. 621 NIEUPORT11-C TRIPLANE, Frank H offer...... 16 West 19th St.. Box 10335. Costa Mesa, California 92627-0132. Phone (714) 645-8830. FAST EDDIE, Bob stiff ...... 30 Subscriptions: $25.00 per year. $47.00 lor KARASŮ O.T., Danny Sheelds...... 42 two years. Single copies $2.50. Subscriptions VERVILLE AIR C O A C H PEANUT, Art M o o n e y...... 51 outside the US (except APO & FPOI $32.00 for one year only. All payments must be in US funds, drawn on a US bank. Copyright 1983 by RCMB INC . All rights reserved- Reproduction without permis­ Cover: Steve Neu launches Mark Smith's World Championship F3B backup sailplane, sion prohibited. an Eismann Camaro, over the side of a beautiful heather and fern covered English slope. Rich Shrameck (U.S. F3B team manager) pilots the model out over an equally beautiful Change of address notices must be received English sheep ranch in the valley below. After a week's worth of tense World Champion­ six weeks before date of issue that new ship competition, this was just what the doctor ordered for soothing the nerves. Cover address takes effect. Send old address with inset: Mark Smith's primary sailplane was his Panic, seen here on a low pass. Those fuzzy new; old label preferred. Post Office will white dots are actually sheep. The sheep left evidence that they grazed where the model­ not forward copies unless you pay extra ers stood while flying R/C gliders .. . much evidence! For a report on the Fourth R/C postage. Duplicate issues cannot be sent. Soaring World Championships, see page 24. Kodachrome transparencies by Bill Forrey. Second class postage paid at Costa Mesa. California, and additional offices.

2 MODEL BUILDER j about new projects for the coming season? Look The catalog that even body has been talking about is 00$* föftbé catalog: 96 pages of four-color photos will available at your favorite R C dealer for only $3.00. This isptte eé vpu to the most innovative collection of model catalog that you don’t want to be without! 1 accessories in vears. Have you heard about the nearly indestructible ‘ Plura* ? The highly pre fabricated Siros ||% t your cptistruction time and increase your thne on thefield with the great-looking and perform ing

idSip section there is something for even one. Speed røchts, scate tugs, sailboats, luggers, fire-fighting boats ... All designed with the emphasis on detail. boatyou choose, you'll get a proven winner

our complete selection of accessories. High .^ ^ d e c t r i c motors for boats and planes, special itøirtds, different types of chargers, propellers gp?M need, even an exciting line of sound-effects s.jføtt add extra realism to vour scale boat. A New Dimension In Modeling KOIJGAR MARK II This fiesty group of fighters started out about 9 years ago when our .40 to .50 powered middleweight came on the scene. Scoring a knockout in the first round, the original stunter has gone on to become a classic kit. Used by many demonstration teams for formation flying, recommended by club experts as the first low wing for low-time students, it's universally recognized as the standard aerobatic fun airplane for any RC'er. That fierce military appearance con­ ceals easy and forgiving flight characteristics that won’t get an unwary pilot in trouble. The team leader is the leader in its field!

KOBKA Introduced in 1982, a compact edition of the theme came out punching and charged into action like a champion. / Modelers who prefer the convenience of engine size below .40 cu. inches should shake hands with this smaller jet-like design. Featuring all of the fine Kougar performance, plus new lines strictly its own, this is a kit box you should look into. Just the ticket for a quick trip to the field for a few flights without a lot of fuss or bother. Low initial cost and upkeep appeals to the Scotch in all of us. Full value, though, including your choice of either of two differently styled versions from the same kit.

KING KOBKA The newest member of the clan has just been added to meet the continual demand from fliers for a .60 powered Kougar. But rather than just enlarge the older bird, we have developed a complete unique design. The kit comes as a fixed gear model with wing area chosen to give outstanding performance with a stock .60 without neces­ sarily needing retracts or pipe. For those who want to go all out, the instruction book and plans show details of retract gear and tuned pipe installations. You won't need these ex­ tras or a Mr. "T" haircut to enjoy the spectacular roll rate and dazzling vertical performance — they are standard equipment.

7/ou*SiyOeaiesi...... lSll IIlliiRJi! See your dealer first! Direct orders call free 1-800-247-5008. Mail $1.50 pstg. under $10. Over $10 ppd. · μ · r x N W S4’ [MotferCordl SIG MFG. CO ...... Montezuma, IA 50171 L x J 4 MODEL BUILDER ^siB3f BUY FROM AUTHORIZED SIG DEALERS ^siosr

GRAND JUNCTION QUINCY FARMINGTON NEW MEXICO YOUNGSTOWN WASHINGTON CULLMAN The Hobby Hut Quincy Hobby Center Joe's Hobby Center. Inc ALBUQUERQUE Boerdman Hobby Center BELLEVUE Chaney'» RAD H o b b y Suppfce* 1125-27 N Ave 3632 Maine 35203 Grand River Ave Valley Hobb«» 6820 Market Street R C Model Shop 601 5th St. SW CONNECTICUT ROCKFORD PH 313477-6266 4522 4th St NW ZANESVILLE 14020 N E 21st St PM 205-7342402 BRISTOL Rockford Hobb«», Inc FARWELL PH 5053489688 Thompson Rad« Suppl«» PH 747 9914 HOMEWOOD Bristol Hobby Center. Inc 615 N Prospect Street Lockwood Aero A Hobby Shop CARLSBAD 1 1 0 S 6th Street BELLINGHAM Homtwood To* A Hobby 641 Farmington Ave WAUKEGAN 3060 N County L m · Road The SchetUer* OKLAHOMA Graham's Hobby Hrve 2830 S 18th St Bristol Plaaa Lake County Hobb«» FLINT 1009 N Eighth St OKLAHOMA CITY 111 E Magnolia MOBILE PH 583-7273 3102 N Shendan Roed Rider's Hobby Shop NEW YORK Campbell » Hobby House CASTLE ROCK D in t Hobby Craft» DANBURY PH 312-662-4544 3012 Corunna Road BROOKLYN 3500 N MecArthwr Aero Motive Products 3077 Dauphim Street The Hobby Center INDIANA KALAMAZOO Brooklyn's Model Masters TULSA 607 Spurt Lake Rghway MONTGOMERY 366 Mam St INDIANAPOLIS Rider'» Hobby Shop 1307 Gravesend Neck Road House of Hobbws KENT Mod·«·*» Supply GLASTONBURY Westside Hobby 3417 So Westnedge PH: 212-339-9250 6914 E Admiral Place Kent Hobby (Mail Order Cat»«Of Sato) D avit Hobbies 5235 Rock v. He Roed LAPEER BROOKLYN OREGON 1313 W Meeker Bo» 7185 Fox Run Mall IOWA Pipps Hobby A Toys Walt's Hobby Shop CORVALLIS Suite 110. Meeker Man PH 2 0 5 2 6 3 2534 NORWALK COUNCIL BLUFFS 112 W eft NepressmgSt. 7909 5th Ave Trum p's (OJ’s) Hobb«» PUYALLUP AT* Hobb·» Bud's Hobb«» A Crafts PONTIAC PH. 212-745-4991 1875 N W 9th St Firgrove Model Supply ANCHORAGE 54 Chestnut Hill Roed 133 W Broadway RC Hobbies OEPEW PH 50 37 53 75 40 10611 136th St. East Anchorage How»· of Hobb«» WATERFORD DES MOINES 921 Huron Depew Hobby Center PORTLAND PH 8487675 604 C Street 2721043 Shoreline Craft Iowa Service Company ROCHESTER 5866 Transit Road Strictly R/C SEATTLE 4211 Spenard Roel 5 Hayes St P 0 Box 222 2706 Beaver Ave Trackside Hobb«» PH 6845555 7868 S W Capitol H«hway Webster Suppty Co 3521 Mt View D riv· PH 443-1458 WATERLOO 418 Mam Street EAST ISLIP PENNSYLVANIA 17818 Aurora Ave N 8225 Ofd Seward FLORIDA Bob's R/C Supply SAGINAW Hobby Work) ARDMORE TACOMA ANCHORAGE BRADENTON 432 Ardmore Tail's Hobby Shop #2 232 E Mam Street Ardmore Hobb«* Bril's Hobby Town Mobbycratt Inc. Semaphore Hobby Center KANSAS C 326 Fashion Square Mad PH 518277-4499 19 A Woodvde Ave 14914 Pacific Ave 800 East Dtmood Btvd 1838 14th Street West KANSAS CTTY SAULTST MARIE ELMSFORD BATH PM 2085318111 S u it· 136 CAPE CORAL R/C HOBBIES Pinnade Hobby Shop Andy's Hobby Shop D *k We tre!» Hobbws WALLA WALLA ARIZONA A A J Models. Inc 5620 S tat· Ave 129 E PortageAve 36 Mam Street 514-E Mam St Harley s R C PHOENIX 1928 Del Prado Blvd LIBERAL TAWAS CITY KINGSTON PH: 218837-6681 Route 1. Box 277A Exeter Hobb«» CAPE CORAL Miller's B*ka A Hobby Shop Croat Lakes Model A Mold Co J A J's Hobb«». In c LANCASTER PH 509-529-2618 3285 E MeDow·« Rd Unde Bob's Country Store 105 E Seventh 412 Margo Street 785 Broadway The Flight Box WEST VIRGINIA PHOENIX Hobby Supply WICHITA TRAVERSE CITY RICHMOND HILL Lancaster Shoopmg Center CHARLESTON The Hobby Bench 4 7 3 0 0 S E 15th Ave. The Hobby Shop Ray's Radio/Controi Shop Wilson Hobby LANSOALE Founlam Hobby Center 19th Avenue 4 Northern PH: 813945-0900 954 South Oliver 517 So Unen 10440 Jamaica Ave Penn Valley Hobby Ctr. 200 W Washington St PHOENIX CORAL SPRINGS KENTUCKY PH 618947-4949 ROCHESTER 837 W Mam St WISCONSIN Hobby Bench Universal Hobbies LEXINGTON UTICA Dan's Crafts A Things LEHIGHTON MARSHFIELD Pared*»« Valley Mall 9001 W Samp«· XCeli Modes, me Henderson's Hobb«» 352 Empwe Blvd Carpenter Hobbws M d W iK W v n Hobby Center 4550 E Cactu» Rd INTERLACHEN 347 Eastland Shopping Ctr. 2441 Auburn ROCHESTER Rt. 5 Box 337 Northway Man SEDONA Field's Hobby Shop. In c PH 60 82 54 2406 WARREN G A G H o bb «» MILTON 503 E Ives St My Hobby Shop P O Box 1063 LOUISIANA Prop Shop Hobb«» 1339 Dewey Ave Kreb s Newstand MENOMONIE Smith'» C orn·* LEESBURG BATON ROUGE 23044 Van Dyke SYRACUSE 83 Broadway True Value Hardware PH 602 282 1290 Top Value Hobby Hobby Town· 1 Block N of 9 M il· W alt's Hobby A Craft NAZARETH 1512 9th Street TUCSON 2740 North Hwy 441-27 3112 Col leg* Drive - S u it· A WYANOOLLE 4300 W Genesee St Tramland U .S A L M art Shopping Ctr Tucion Hobby Shop Fruitland Park Pla/a MANOEVILLE Stoner Hobby Center UTICA 105 B e lvtd ·*· Street MILWAUKEE 4352 E Speedway MELBOURNE Mercury Hobb«». In c 145 Maple St American Hobby A Sports PITTSBURGH Casanova's Hobby WlCKENBURG Erme's Hobby Shop Rt 6 Box 734A PH 3 1 3 2 8 3 2355 2107 Whitesboro Street Bin 4 Walt's Hobby Shop 1423 S MuskagoAve Lane'» Toytand 4 MoOb«» 631 Apollo Btvd METAIRIE MINNESOTA PH: 318724-4959 116 Smithfwk) St PH. 414-672-2700 81 N Valentin· MIAMI MAM 's Hobby Art A Cratt D r BEMIDJI NORTH CAROLINA READING WAUSAU ARKANSAS Crown Hobbies 5229 Veterans Blvd Hobby Hutch CHARLOTTE Iron Horse Hobby House Pope's Hobby Land FAYETTEVILLE 7439 Coral Way NEW ORLEANS Paul Bunyan Mall Respcaplnc - Science Hobb«» 60 South 6th St 640 South 3rd Ave Collier·» A ir Craft» MIAMI Pet A Hobby C ent·* BLOOMINGTON 2615 Central Ave. READING CANADA 1610 Foxhunt·* Road Orange Blossom Hobb«». Inc 4035 Touro Street Jolly's Hobbies A Crafts EDEN Oft'» Hobbws BAWIF. ALBERTA LITTLE ROCK 1975 N W 36th Street WESTWEGO 7935 Southlown Center Coke's Fix-It A Hobby Shop 536 N 10th St. B 4 P Transport Ltd Sherrill·* Mouse Of H o b b *t ORLANDO Clark s Hobby A Craft Center CRYSTAL Rt 2 Box 222 SLATINGTON Box 6 3408 S University Ave Bob's Hobby Center. In c 729 West bank Expressway Crystal Schwmn Cydery PH: 919627-0166 Valley Hobbws 4 Coftectibies PH 3733953 Han Pla/a Shopping C ent·* 7333 Lake Underh.il Roed MAINE 6324 Bass Lake Rom) GREENSBORO 102 Mam Street CALGARY. ALBERTA PH 562 8230 PENSACOLA WATERVILLE DULUTH Sports A Hobb·» Unlimited WARMINSTER Hobby Work) Canada NORTH LITTLE ROCK Bob·'» Hobby House JFK Hobby A Craft C tr In c Carrs Hobb«s 2144 Lawndale Drive J C R-C Hobbws Box 968 Stn M MedifO Hobby House 5719 North W Street JFK Mall 2014 West S u p ·*n r Street Lawndale Shopping Center 13 York Roed CALGARY. ALBERTA 4212 McArthur Onva PLANTATION MARYLANO RICHFIELD HENDERSONVILLE PH: 21 8672 5200 P.M S Hobby Craft CALIFORNIA Universal Hobb·» WALDORF Hub Hobby Center The Hobby House WAYNE Calgary North M.u Centre BURBANK 141 South State Road 7 Doug's Hobby Shop 16 W. 66th Street 1211 Asheville Hwy. Hyen Hobby House WINNIPEG MANITOBA T A A Hobby Lobby POMPANO BEACH Waldorf Shopper’s World ST PAUL PH 6926683 Gateway Shoopmg Center Cellar D w ell·' Hobby. Ltd 3512 W Victory Btvd Trade N Hobbes MASSACHUSETTS Gulliver's HIGH POINT PH 21 8687 2244 1354 Mam St COVINA 2159 S E 9th St AMESBURY 1526 W Larpenteur Bern«'» Craft A Hobbws. Inc. SOUTH CAROLINA PH 589-2037 Covina Hobby C ent·* PH 305943-1997 Goodwin's Photo A Hobby ST PAUL 2291 Engtrsh Roed GREENVILLE WINNIPEG MANITOBA 140 N Citru» SARASOTA 30 Mam Street Mac s Models. Inc KING The Great Escape Gooch * Hobb«» PH 331 1910 H * H Hobby Sales BOSTON 1322 N Rice Street King R/C Pleasantburg Shopping Center 646 Portage Ave EL CAJON 4121 S Tamiami Enc Fuchs Hobb«» PH 612-4898060 Ok) Hwy 52 1426 Laurens Road ST JOHN'S. NFLD. Mike'» Model Shop SOUTH DAYTONA 28 Fremont Street MISSISSIPPI PH 9833969 Ph 8032388320 or 242-4229 Capitol Hobby Centre. Ltd 229 Ea»t Mam Ace Hobbies BURLINGTON BILOXI WINSTON-SALEM MYRTLE BEACH 6 Freshwater Road FRESNO 2133 So Rdgwood Ave. Eric Fuchs Hobb«» Chuck’s Hobb«» The Hobby Comer Ed s Hobby Shop OUNOAS ONTARIO Fresno Hobby A Craft» PH 904761-9780 Burlington Mall 502 Edgewater Gul» Dr C-3 1 3 8 0 Oakwood Drive Hwy 501 Next to Fan|Oy Skycraft Hobb«» Inc 3026 N Cedar Ave TAMPA CHICOPEE PH 601 3888346 NORTH OAKOTA Sign Company 139 York Road FULLERTON Farmers Sundries A Hobb«» J A J Hobbies OXFORD GRAND FORKS TENNESSEE SCARBOROUGH ONTARIO California Mod·! Supply 4939 E Broadway 133 Frontenec Street Creative Sources McGiftms Hobbies Unlimited KNOXVILLE Toronto R/C Hobby 1056 South Brookhurst PH.813-248-3314 PH 413-592-1472 1010 Jackson Ave 1228 9th Ave S Tennessee Model Hobbws 1869 Lawrence Ave. E HAWTHORNE GEORGIA EAST LONGMEADOW MISSOURI PH. 701 772-5311 Rt 62 Oak Ridge Hwy · Sofway PH: 41 8 7 5 8 1 7 6 6 Chuck » Model Shop ALBANY Β.ΙΙ » Hobby Suppl«» GRANDVIEW MINOT PH 6 1 54 82 2900 WILLOWDALE. ONTARIO 14106 H aw thorn· 8 to ) Lowefl's 600 N Mam Street Flo-Mow Co Aeroplane Factory HobbyShop NASHVILLE Keith'» Hobby Shop LAKEWOOD 1601 N Sleppey Blvd PH 413-7387711 700 Blue R*dge Ext. Mmol Inti. Airport The Toy Mart 5205 Yonge St Hobby Warehouse PH: 912-886-2095 FITCHBURG LEE’S SUMMIT WILLISTON 113 Graytynn D m « PH. 2224721 4128 South StrMt MARIETTA McMannus Hobbws A Novel Blue H.lies Bike A Hike. Inc. Tn County Glass A Hobbws PH 61 88 83 18 48 ANCIENNE - LORETTE, LIVERMORE Complete Model Supply 633 Mam St 229 $ Mam 103 22nd St Wes! TEXAS QUEBEC Hobby Haven West »de Shopping Center FRAMINGHAM ST. CHARLES OHIO ARLINGTON Passe Temps Phoenix t756 First Street 806 Sandtown Roed Fisher R-C Mark Twain Hobby A Craft BEAVEROAM The Hobby Hub 1459 Notre Dame PH 415-443 5828 ROSWELL 17 Sekni Roed 1355 S 5th Buckeye Hobby Shop 903 A Pioneer Parkway West PR 4188724113 LOMITA Tommy's Hobb«* PEABODY St Chad·» Shooomg Center 7940 Lugstull Rood AUSTIN ARVIDA. QUEBEC The Flying Machine Mod·« Ct 1270 Alpharetta SI Enc Fuchs Hobb«» NEVADA BERLIN HEIGHTS J 4 J Hobbws LeModele Redurt Enr 2441 S Narbonne Ave Brannon Square Northshore Shoppmg Center LAS VEGAS Danwl s Hobb«» 610 Kenniston Dr 118 Mathias CP 341 MT VIEW SMYRNA WORCESTER J J * Hobby Den 36 Center Street CORPUS CHRISTI PH 41 8 5 4 8 2 1 3 6 San Antonio Hobby Shop Hobby Junction Ray's RiC Specialties 4972 S Maryland ParkwayfB BROOKVILLE Leisure Time Hobbws HAUTERIVE. QUEBEC Sear* Shopping Center 3260 South Cobb Drive 12 Sherman St NEW HAMPSHIRE Country RÆ 1326 Airline Le Centra Du Modehsle PH 415-941-1278 VAIOOSTA PH 757-5883 KEENE 12450 Amity Road DENTON Allard 1223 Lettrat NORTHRIDGE Jim's Hobby Shop WRENTHAM Leisure Time Hobb«» CLEVELAND Yeliowbird Hobb«» MONTREAL QUEBEC Smith Broth·*» Northsid· Pla/a B's Tire A R/C Hobb«» 322 West Sheet The Hobby House. Inc 117 W Hickory Can-Air Hobbws 8941 Reseda BM) PH 912 2446991 383 Burnt Swamp Roed LITTLETON 800 Huron Road EL PASO 5850 Goum B»vd Oue*t SACRAMENTO HAWAII PH 617 3848237 Hobby Land CLEVELAND Hal's Hobby Shop PH 514-332-3565 Graphic Hobby House HONOLULU MICHIGAN 101 Union Street National Hobby. In c No 57 Sunrise Center SASKATOON SASKATCH 2610 Marconi Ave Hobb«tat ANN ARBOR NEWINGTON 5238 Ridge Roed PH 91 87 58 19 14 Cotlms’ AeroCratt SAN BERNARDINO 1423 Tenth Avenue Rider's Hobby Shop Enc Fuchs Hobb«s FINDLAV FORT WORTH 238 First Ave North Harper's Hobby Shop ILLINOIS 115 W Liberty Fox Run Mall Jmx Model Supphes M ott's Hobby Shop PH: 6 5 2 4 775 222 No G St BELLVILLE BATTLE CREEK NEW JERSEY 721 Rockwell Ave 7241 Grapevine Highway YORKTON SASKATCH SAN FRANCISCO West Side Hobby Hobby House EDISON LAKEWOOD PH 817-281-0921 Rad« Control Hobbws Franciscan Hobbies 2629 West Mam Street 1035 W Territorial Rd C J R/C SUPPLY Wings Hobby Shop Inc. HOUSTON 39 B e tti Ave 1935 Ocean Avenue CHICAGO 250 P1amt«ld Ave. 17112 Detroit Ave Clear Lake Models PH 9849105 AUSTRALIA SAN JOSE Stanton Hobby Shop CADILLAC PH (201) 9858660 PH 221 5383 117 Cammo S Shopping Ctr SYDNEY. N 5 W Chuck Sheldon'» Hobby Shop 4734 N Milwaukee Ave The FUght Center MARLTON PH 71 34 88 63 15 LANCASTER Pyrmont 2009 3157 Alum Rock CRYSTAL LAKE 916 S Mitchell Hi Fly Hobb«» HURST Slater's In c fi.-n'·'*« SANTA BARBARA Frank's Berber Toy A Hobb«» R outt 70 A CropweH Road Plara Shopping Center Roy's Hobby Shop CLAWSON 137 Pyrmont Street Atkin» Hobbies 111 113 North Mam Street PH 609-9838060 1141 N Memorial Drive 1309 Norwood Nwk's Pet A Hobby PH <02)6920694 14 W. Anapamu Street PH 815-459-0247 1139 W 14-Mil· Road. POMPTON PLAINS LIMA UTAH BRISBANE, QUEENSLAND PH 805-963-3404 GLENVIEW COLDWATER Hobby Hut Callahan Hobbws OREM Underwood 4119 SANTA MONICA Nipper's Toys A Hobb«» Hobby Heaven 567 Route 23 Miniature Prod 1229 E Elm St The Hobby Warehouse E ve tfs Mcdei Shop 1314 Waukegan Roed 7 $ Monroe Street PH 2018382077 MANSFIELD 811 W 400 N 30 Kingston Road 1636 Ocean Park BMJ PH 312-724-2040 PH 517 2785894 RAMSEY Top F lit· VERMONT COLUMBIA. S AMERICA PH 213-452-2720 MCHENRY DEARBORN Hi-Way Hobby House 15 N Main SW ANTON Aeromode tos Britannia Ltda SANTA ROSA The Hobby Hangar Joe's Hobby Center Route 17 PROSPECT The Hobby Shop Apart ado (PO Boa) 52530 Toy i Model 5515 No Wilmot Road 7845 Wyoming Ave RANDOLPH Lighthouse Hobby Supply Co R f D 1 Rt 7 Bogota 2. Columbia 711 Coddmgtown Mall PH 312-497-3103 PH 3189 33 85 67 Carl·» Hobby Center 507 E North Street PH 802-524-2715 PH 212 7309 COLORADO MURPHYS80R0 EAST DETROIT 508 Route 10 VIRGINIA TOLEDO NEW ZEALAND AURORA RJ Hobby A Elec Center Joe's Hobby Center P H 201 3684300 The Hobby Stop ANNANDALE INVERCARSILL Tom Thumb Hobby Center 1508 Walnut Street 17900 E lO M .ie RED BANK 4907 Summit Street Model Masters, Inc Model Shop 10718 E Colfax PH 61 8687 1981 PH 3137 38 82 94 Hobbymasters. Inc, WAPAKONETA 6920 Braddock Rd 55 Arcade Dm St PH 303 3616159 OAKLAWN EAST LANSING 62 White Street Dad s Toy Shop RICHMOND PH 89439 COLORADO SPRINGS Pat's Hobb«» A Crafts Rider's Hobby Shop WALLINGTON 129 E Auglaize St. The Hobby Center VENEZUELA Custom Hobbies 5730 W. 95th Street 920 Trowbridge Road Bednař/ Servicenter 1709 Willow Law nD r 2813 E Ptatte Ave PH 424 6131 CARACAS 1070-A R/C Hobby Supphes Hobby World CA. (Out ) GRAND JUNCTION 356 Main Ave Aero Rail Hobbes Apartado Postal 75054 1141 N 25th St PH (02) 34 33 02 P tau 25 DEALERS: Write For Details On How Your Name Can Appear In This Column

DECEMBER 1983 5 be doing another, but briefer review on epoxied in place. Nothing’s easy! this model shortly. This was my first What’s next? There's a PB-2 old timer experience with Solartex, a fabric-type, that needs to be finished. This will re­ heat-applied covering material from place the tired old Powerhouse that England, and obtained from Hobby served us well for nearly eight years. The Shack, in Fountain Valley, California. So front end was so oil-soaked after wearing far, it’s very impressive. In fact, I’m out three engines that it simply fell apart impressed enough to commit myself to when we removed the Monokote to using it to finish (at last!) the quarter- attempt some repairs. The only solution scale Aeronca C-3 started 15 years ago. It would seem to be a whole new front sticks well, including to itself. It pulls up end, spliced on to the original fuselage reasonably taut. It can be painted. It's a somewhere along the cabin area. The snap to cover compound curves and PB-2 is almost ready for covering; just tricky wingtips, and the grain goes the needs a radio installation and wing long way on the roll. saddle. By the way, does anyone know Yes, the Air Knocker is coming along. what the ‘B’ stands for in PB-2? We The drawings are being updated to assume the 'P' is for Thracy Petrides, agree with last-minute changes in con­ whose name appeared with this and struction, the tail surfaces are covered many other designs of that era, but who (wings next), and it's getting to be is the ‘B’? decision time on the engine. Originally, After that, there’s a large scale project it was to be a Webra 60 vintage 1967, we’ve thought about for many years. loaded down with a scale size (18-inch) Started doing some concentrated re­ prop. But that was before the four-cycle search lately. Not easy, because it was a ø ; / / engines came along. Though it will be a 1933 aircraft, and some details are kinda nine-foot span airplane, it’s really sort of vague. We're not going for Precision N o r t h r o p ' * a powered glider, so not much engine is Scale, but sometimes it’s difficult to needed. restrain yourself as ideas for obtaining It was planned to mount the engine strict scale fidelity starts coming to mind. w o r k b e n c h inverted, hide the cylinder head behind More on this one later. scale oil cooling fins, and add dummy OPEN SEATING • The Editor’s Workbench still suffers opposed cylinders. As it is also planned It's nice to get letters, even those that from neglect, but less than in past years. to add scale Edo floats and fly off water, criticize, and Bob Benjamin's September In spite of two long trips to Florida that we may just stay with the Webra for the ’83 cover painting of the PT-17 Stearmans took up most of May, June, and half of extra power that may be needed to get stirred up some correspondence. The July, followed by a two-week trip to take unstuck. Also, changing to a four-cycle criticism concerned his putting the in the Nationals and then a one-week would probably mean having to revise a visit to Ida Grove and Montezuma, Iowa, 1/4-inch ply firewall that is already firmly Continued on page 100 Model Builder’s editor has managed to put in some shop time. To get a more direct “connection" with electric power, the old former free flight Comet Clipper, which had been changed over to R/C with a K&B Green- Head Torp .29, was again back-shopped and converted to burn "battery fuel.” A belt-reduction Astro Flight 10 motor was installed on maple beams epoxied through the firewall. The very depend­ able Mathes radio (remember that one?) was installed, with the output arm tripping the lever on a 15-amp micro-switch to turn the motor on and off. Performance is adequate but not sensational. Probably going to a seven­ cell pack instead of the present six-cell would make it sprier. But the fun thing is this . . . Last Sunday, Belinda and I took the Clipper and her AMA Cub to the local elementary school athletic field, and though there was a baseball game in ADVICE FOR THE PROPWORN foam glider and dimpled the entire progress on the diamond at the far —By JAKE things wings, fuselage, and all. I was sure corner, we were able to fly our airplanes it would work, but the radio failed " hard without being bothered. A paved area Dear )ake, over” on the test flight and it crashed. by the school buildings provided a My baby daughter is teething, and What do you think I can conclude from smooth takeoff runway for the Clipper, lately she chews up anything she can get all o f this? and within two or three minutes, it was her hands on. Right now, our dog has a —Experimenter in Edgewater high enough to sniff around for lift bandaged tail, and my Sig Contender Dear Experimenter, (there wasn’t any to be found). After has tooth marks all over the vertical fin. I think you can safely conclude that if each landing, we had 15 minutes of fly­ The amazing thing is, it seems to fly you beat on an airplane long enough ing with the Cub while the batteries better now. The rudder response is with a ballpeen hammer, the radio won’t were charging. definitely improved. It occurred to me work when you go to fly it. Intertwined with electrifying the that maybe I was getting the same effect Clipper, I worked on the pre-construc- —Jake on my tooth-marked fin as they get from ★ ★ ★ ted version of the Cloud King reviewed putting dimples on a golf ball. To test my by Al Tuttle in the October '83 issue. I’ll idea, I took a ballpeen hammer to an all Continued on page 90 6 MODEL BUILDER OVER THE COUNTER

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A ll material published in "Over the Counter" is quoted or paraphrased from press releases furnished by the manufacturers and/or their advertising agencies, unless otherwise speci­ fied. The review and/or description of any product by R/CMB does not constitute an endorsement of that product, nor any assur­ ance as to its safety or performance by R/CMB.

• Model Rectifier Corporation is in the new products news this month with its announcement of the MRC-Tamiya Subaru Brat 1/10 scale R/C off-road car. The chassis is unlike anything else seen before as it is constructed of rugged ABS plastic resin which provides less weight and allows less chassis twist for more effective suspension operation. The RS-380 m otor inside the Brat drives an enclosed gear box, giving you more running time per battery charge. The power is transmitted to the rear wheels by new hex-type universal joints, which are underneath protective rubber boots. The Subaru Brat uses four-wheel independent suspension, with trailing rear arms that use coil springs, and a double wishbone front suspension featuring a servo saver, constant camber, Super Silencer 20 from Midwest Model Supply/Irvine Engines (England). and adjustable castor for the utmost ease in steering response. The front suspen­ makes throttle control easy for this real style. You’ll also find the Brat to be sion even has steel radius arms just like Subaru, with plenty of rubber on the easily modified for hotter running too, the real Brat! semi-pneumatic wide tires on all four using the new RS-540 motors and ball Your two-channel radio equipment wheels giving you fantastic roadability. bearings. and 7.2-volt battery sit in the middle of A solid steel antenna rod also helps What are you waiting for? Join the o ff­ the chassis for a better center of gravity your car bounce back after a rollover. Of road fun with the MRC-Tamiya Subaru and for added protection. A three-step course, a great, detailed Subaru Brat Brat, at a price you’ll appreciate! See forward and reverse speed control body tops off this off-road winner with your dealer. If he can’t help, contact

MRC's new Subaru Brat 1/10 scale off-roader. Pacer Technology & Resources new sizes, packaging.

DECEMBER 1983 7 Kraft Systems new mini servo, KPS30, has 25 oz-in of torque. New scale drawings from Repla-Tech International. MRC at 2500 W o odbridge Avenue, Edison, NJ 08817. ★ ★ ★ Top Flite Models, Inc. has introduced its high-tech, flat-wing, multi-task sail­ plane . . . the Antares. This radio-con­ trolled aircraft was designed by Scott Christensen and has a wingspan of 99.75 in., a wing area of 867 sq. in., a length of 47.5 in. and a flying weight of 3 to 5-1/2 lbs. (unballasted). The unballasted wing loading is 8.91 ozs./sq. ft. and the kit is designed for most three and four- channel radio equipment. Christensen's Antares is easy to build and fly for the Sunday flyer, yet is designed for experienced pilots and all- Total Chaos out competitors. The design is Standard Hobby Barn's Joe Bridi designed pattem/sport plane. Class in span. As a multi-task sailplane, it The Antares can be set up with either accurate, easy assembly. Each part fea­ addresses the challenges presented by separate flaps and ailerons, or with tures Top Flite's printed identification club-level competition by excelling in and flaps to produce the system to aid the builder throughout thermal duration, spot landings, closed characteristics of several airfoils at will. construction. A generous radio com­ course speed, and closed course cross­ The Antares also incorporates rudder partment is easily accessible through the country. This is a sailplane design that and stabilator. The use of ailerons and canopy/hatch. A complete hardware seriously contends with all three com­ flaps in the design provides the pilot package is included. Comprehensive, petitive tasks. with a precise system for control while full-size, rolled plans with fully illus­ Aerodynamically, the Top Flite launching, thermalling, and in glide trated instructions complete the kit. Antares is state of the art. It is a flat-wing path control. For more information and the latest configuration that represents a signifi­ Construction is high-quality balsa, ply, catalog with Monokote color chart, cant departure from traditional poly­ and spruce. Quick-building wings are send request with $1 to: Top Flite hedral setups. The airfoil design is a fully sheeted (top) with completely Models, Inc., 2635 S. Wabash Ave., unique marriage of the Eppler 193 and webbed spruce spars top and bottom. Chicago, IL 60616. 205 airfoils to provide excellent slow- The fuselage is a balsa/ply/spruce com­ ★ ★ ★ speed and high-speed characteristics. posite. All parts are cleanly die-cut for Kraft Systems, Inc., P.O. Box 1268,

Davis Diesel Development’s new diesel conversion kits for H.P. 61K and Enya E-19X. Also CO2 conversion for Cox .020 PeeWee/Tee Dee.

8 MODEL BUILDER Aircraft Photo Packs 1984 catalog features color photos of over 125 different aircraft.

Power Products four point hydro Marlin k it. N ew Zippy Sport kit from I.M.S. Vista, CA 92083, has announced the Irvine Engines of England has released release of its latest mini servo. Called the first of a series of Super Silencers. Pacer Technology and Resources, the ‘‘KPS30,” this super light (.79 oz.), The Super Silencer 20 fits the Irvine 20 Inc., manufacturers of the famous Zap super fast servo features ball bearings, and 25engines. The Super Silencer 40 fits line of cyanoacrylate adhesives no backlash gears, and the following the Irvine 30 and 40, the OS 40 and 45 announces that Zap/CA can now be specifications: FSR, the S.T. C. 40, and the H.P. 40 urchased in two-ounce, money saving T o rq u e ...... 25 oz-in engines. These Super Silencers are de­ Cottles. Zap/CA is thethincyanoacrylate Speed...... 0.3 sec signed to optimize engine performance adhesive which is so useful in modeling. Resolution...... 0.3 sec for 100° by minimizing rpm loss and in most Zap penetrates and bonds in two to five Current drain ...... 5 ma (idle) applications increasing engine rpm. The seconds, making it ideal for quick S ize...... 1.29 X .63 x 1.45 in. Super Silencers are one piece units tacking of components. There are hun­ This servo, with P/N 200-077K connec­ which require no additional header dreds, even thousands of uses for tor adapter, may be used with K-Line pipes. Available at your favorite hobby Zap/CA as modelers everywhere are systems. shop. For more information contact discovering. For more details, contact Kraft Systems Midwest Model Supply Co., Box 518R, The new two-ounce size joins the Inc., or see your local Kraft Dealer. Romeoville, IL 60441. ★ ★ ★ ★ ★ ★ Continued on page 75

Two new Christmas promotional kits from Dremel. Model 3801SP (left) and Model 2501SP (right).

DECEMBER 1983 9 The Christen Eagles and the U.S. Navy's Blue Angels performed during the Festival, providing a terrific aerobatic show, and bringing thousands of spectators to Ida Grove. The Angels couldn’t get in a tighter formation than that! IMAA IDA GROVE EXTRAVAGANZA

A panoramic shot showing half of the flight line and pit area. Tents at the far right background housed the many giant scale models on display. Impound tent is at left foreground. • Ida Grove, Iowa, August 18,19, 20 and year, but even more so this time, Byron, many long hours putting on a miniature 21. Some called it the IMAA Fly-In,some his son Bruce, and just about everyone and full-size air show that would be hard called it a four-day Byron Originals employed by Byron Originalsand Mid­ to beat. Commercial, but most people called it west Industries (the Godberson-owned The Christen Eagles; Charlie Hillard, one helluva four-day air show. company which manufactures heavy , and Bob Poberezny, came The Third Annual IMAA Fun Fly Festi­ farm equipment, as well as a marine for the weekend, putting on their thril­ val was hosted, for the second year in a division which is the largest U.S. pro­ ling precision show on Friday, Saturday, row, by Byron Godberson and his model ducer of boat trailers and a unique dock- and Sunday. The U.S. Navy’s “ Blue company, Byron Originals. As it was last side boat hoist), worked hard and for Angels” , already scheduled for a Satur-

Carroll Cheek, Buffalo, Texas, and his half-scale Pober Pixie. Span Dr. Lou Antonacci, Hampshire, Illinois, takes off in his F4U Corsair, is 15 feet, 6 1/2 hp. Hornet engine, 50 pounds. His four-point rolls were something to see.

10 MODEL BUILDER How about a "quarter-scale" Hot Canary? Sorry we didn t get the An N.A.S. Olathe based Corsair, uses Byron P-51 drive. Quadra, Byron name of the builder, or any specifications. prop. From Ziroli plans, by Kerry Hurt, Lake Jackson, Tx.

Larry Scott's Mosquito. Glass parts w ill be available. He's designer of Gipsy Moth from Bill Northrop's MB plans, by Dick Parshall, Waco Taperwing and Krier G.L.T., both MB plans. Holcomb, N.Y. Quadra powered, tows banner. day/Sunday show in San Diego, still would just get busy on the Godberson fun, the Warbirds and homebuilts did came out to Ida Grove; on Thursday to Hilton! fly-by’s. Standing on the highest part of check out the topography and test a few The 1983 Festival was expanded to the R/C flying site, one could look off in maneuvers, and on Friday to do their four days, with around 55 trade exhibi­ several directions and spot hundreds complete show. And this took extra tors occupying over 60 booths under and hundreds of cars parked in far off doing, as in order to fly up from San two huge tents. In addition to the fields, looking like vast country-style Diego, do the show, and return without “ Eagles” and "Angels” , there were static junk yards. It was definitely awesome. landing (no place within range to land and flying displays of homebuilts and Saturday was not as crowded as ex­ and refuel), they had to rendezvous with WW-II “ Warbirds” (SNJ/AT-6, T-28, pected, probably because the Blue a tanker plane in order to take on Grumman TBM, F4-U Corsair, P-40, Sky- Angels were not there. Also there was enough “go-juice” to complete their raider, etc.). some threat of those dreaded Iowa flight back to San Diego’s Miramar NAS. Thursday was relatively mild, with lots thunderstorms. However, the storms If you haven’t heard about it before, of R/C flying, interrupted for a short held off until 5 p.m., and then hit hard! Ida Grove is a small (population 2500) period as the Blue Angels came in to The exhibitor tents almost went down, farm community almost to the western "case the joint” and run through a few and many of the exhibitor booths were border of Iowa, about 60 miles south of maneuvers. badly damaged. Being the third unbear­ Sioux Falls. It is almost like any other On Friday, the stuff really hit the fan, ably hot day in a row, many exhibitors small Iowa farm town . . . except for one as approximately 15,000 spectators had left early to seek out their aircon­ thing. . . it is the home of theGodberson showed up to watch the Eagles and the ditioned motel rooms in towns as much family, of Byron Originals, and Midwest Angels do their thing! Those BlueAngels Industries. It has an airport . .. which can sure draw a crowd. Adding to the Continued on page 84 Byron built. It has a skating rink .. . which Byron built. It has a golf course.. . which Byron built. It has a hospital . . . which Byron built .. . etc. Now if Byron

Byro-drive and prop from P-51 that plowed into corrugated aluminum building. Shaft Simple wing disconnect on Byron P-47 (coming soon). Flaps, aileron, and air retract connectors slightly bent, but otherwise A O.K. all make up when wing is shoved into place. Two bolts lock it up.

DECEMBER 1983 11 U.S. SCALE TI

By CLIFF TACIE . . . A fascina­ ting account of this year's FAI Scale Team Selection Contest as told by one of its participants, The 1984 US Scale Team, left to right: Bob Wischer, Cliff Tacie, Steve Sauger, Bob Underwood. and one of its winners. C liff Skip Mast, Jeff Perez, Mike Gretz, Ron Sears, Ed Rhoades, and Charlie Bauer. Tacie. If you are into C/L or R/C scale modelling, you will want to read about the latest trends in precision miniatures.

• Ah, Louisville! The city of mint juleps and the Kentucky Derby will now be remembered by many for yet another event of significance. Over the weekend of August 12,13 and 14, some of the top scale modelers in the country gathered Ralph Burnstine's scratch-built, C/L, in Louisville for the team selection trials PT-26 Cornell back iri action again. for the 1984 United States Scale Team for radio control and control line. The site of the event was the 750-acre George Rose's P6-E Hawk proved to be a tricky plane to land! E.P. ‘'Tom” Sawyer State Park on the east side of Louisville. The Kentucky State Parks Department has a history of going out of their way to provide facilities for modelers if at all possible, and this park is the perfect example of how harmon­ ious a relationship between a model club and a park system can be. The park is the normal flying site for the Lousiville R/C Club, River City R/C Club, and the Tom Sawyer R/C Associa­ tion, all of whom share the facilities offered by the Park. And what facilities! How about a smoothly paved asphalt Hal Parenti assists Skip Mast in preparing Skip's C-130 for runway, about 35 feet wide and several another winning flight. Powered by four K&B 3.5cc engines. hundred feet long . .. about the size of five tennis courts laid end to end . . . hmmm? The grass surrounding the run­ way is fit for a putting green, and the good sense, and it ensured that all horns and proposed to the NASA mem­ many acres of tree-infested park land members selected for the team had a bership and the AM A a program of team are comfortably distant from the flying legal F.A.I. model now and wouldn’t be selection fo r 1983 w nich w ou ld be area. The site has been utilized prior to required to build a new model for the separate from the Nats, run solely for the this for several other major events World Championships. It’s been difficult purpose of selecting a team of scale fliers including the 1981 Scale Masters and the to hold an F.A.I. team selection event at who would represent the United States 1981 I.M.A.A. Festival. a Nats, however,along with all theother at the Scale World Championships in In past years, the team selection trials scale events, and still have it garner the Paris in 1984. Through the membership for scale teams has been traditionally attention and significance it so rightly of NASA, and the contestants partici­ held at the Nats. At the Sequin Nats in deserves. pating in the 1982 Nats at Lincoln, Bob 1981, there was an additional stipulation With that thought in mind (and the/ow received what appeared to be solid that any contestant trying for a spot on turnout of team candidates at Sequin), support, and with this support in evi­ the scale team had to compete with a Bob Underwood, who was then presi­ dence, AMA backed and approved the model that met F.A.I. specifications for dent of the National Association of Scale proposal. weight, engine size, etc. It made very Aeromodellers, took the bull by the As a result of Bob’s efforts, it was 12 MODEL BUILDER a high degree of craftmanship, but lacking accuracy in scale outline, would receive static scores approaching those of the Precision class. Thisdidn’t happen. In fact, I have to admit that with few AM SELECTION exceptions, static scores seemed to very accurately reflect the individual models. The factor which had the greatest impact on the outcome of this event was the F.A.I. system of awarding a complex­ ity bonus for what is considered to be a more complex subject. Under this sys­ tem. a flier is awarded an additional bonus in the form of a percentage of his total flight scores for items such as extra wings (biplane, triplane, etc.), multiple engines, and retractable , to name a few. This team selection trial saw the entry of several high complexity bonus models: Skip Mast's C-130 and Jeff Perez’s B-17, both 30% for four engines and retracts: and Steve Sauger’s Stinson Trimotor,a 25%forthreeengines and retracts. That meant that each time they flew, an additional 30% or 25% (respectively) was added on top of their raw flight score. As we are about to see, it’s an almost unbeatable combination. Tragically, Hal Parenti lost his beautiful Savoia-Marchetti S.M. 79 tri-motor First place in C/L went to Jeff Perez and his (25%) on it’s maiden flight just four days B-17 Knock-Out Dropper. before the trials. If he had been able to compete with that model along with Skip and Steve, it would have been all over except for the shouting. A total of 23 contestants, 10 for R/C. and an amazing 13 for control line, gathered on Friday at the park gymna­ sium for processing and static judging. All entrants had been preregistered, and Steve Sauger's Stinson Model A trim otor all entrants had paid their $50 entry fee. Ron Sears' Stearman PT-17 and author's Spezio took third (above). Charlie Chambers flew an item which ensures that only serious- Tuholer. Both are O.S. .60 powered. th is F9F Cougar (below). Jet Hangar kit. minded competitors are involved. This certainly could not be considered a regionalized event, as entrants traveled from both coasts of the U.S. to compete: George Rose and Ed Rhoades from New Jersey; Burnis Fields from Florida: and even Earl Thompson from California. It was obvious that everyone was taking this competition seriously, as all the models looked liked winners from the time they were carried into the gym. The static judging began around 10 a.m., the order of judging having been decided by a draw from a hat. Each model was weighed before judging to verify that it was within the legal FAI weight limit of six kilograms (seven kilograms for multi-engined control line), with only a couple of the larger models being anywhere near the legal decided that NASA would organize, The proposed new F.A.I. rules for 1984 weight limit. Two of the fliers had even develop, and sponsor the team selection were used as these are the rules under contemplated using styrofoam wheels if event. Louisville was chosen as the which the U.S. team will be competing necessary to stay under the weight limit, location because of its excellent site in Paris. These rules incorporate the new but it turned out they made it without facilities, and because of the availability “ Standoff” type static scoring, whereby having to take such extreme measures. of a large group of modelers with the the models are judged for scale accuracy, The models were judged by two expertise and willingness to run such an color and markings from a distance of panels of judges; the control line judges event: Contest Director Dale Arvin and three meters, after which the judges were Burt Dugan, Andy Sheber and Lew the Southern Indiana R/C Club . . . the move in to a distance of one meter from McFarland; the R/C judges were John same great group of guys who annually the model to judge fro craftmanship, Guenther, Bill DeVerna, Art Arrow, and treat us to the M int Julep Scale Meet. surface texture, and scale detail. Many Dave Abel. In FAI,thesame set of judges Another local group of modelers, the scale modelers, myself included, have is used for both static and flying, so the Skyliners Control Line Club, was instru­ felt that the elimination of the scale ruler judges had a long, working weekend. mental in running the control line was a downgrading of the event, and portion of the trials. that many sport scale models displaying Continued on page 82 DECEMBER 1983 13 Bernard Cawley of the Boeing Hawks, Seattle, Washington, poses with his scaled-up (140%) The innards o f Bernard's S how m aster as seen fro m Showmaster. The model uses Astro 05XL Sport with seven sub-C cells and 11-7.5 prop. the top side. Litco Bantam Midget Servos are at £ELECTRIC POWERi By MITCH POLING

• Last month I wrote about making your Wilshire Model Center is ideal for these them. If anyone knows where to find own connectors from wire wrap sockets connectors, as it comes in red and them, please let me know, and I'll pass it and wire wrap header pins. These make black. The polarity of the pins becomes on. I have seen some in single strips (not excellent and very small connectors, but automatic, just match the colors. If you a dual row) advertised by Sintec Co., there were two things that were a prob­ do not have color coded wire, put Drawer Q, Millford, N) 08848-990, for lem: one was trying to cut the sockets colored vinyl tape or paint on one side $3.25 for the female sockets (25 pin,gold properly (this has to be done carefully!), of the connectors to keep the polarity plated) with shipping charges of $3. the other was that the female pins are a straight. Other places to try might be Jameco little on the fragile side. They did stand There is only one drawback to these Electronics, 1355 Shoreway Road, Bel­ up to abuse, even a short circuit I acci­ sockets, they are hard to find! They are mont, CA 94002 ($10 minimum order), or dentally put them through didn't burn also hard to describe to the clerks, the Digi-Key Co., Highway 32 South, Thief them out, but I did feel that there might magic words seem to be: “ Wire wrap River Falls, MN 56701 ($2 handling, in­ be a better way. sockets with one-tenth-inch centers.” cludes shipping). Digi-Key does adver­ There is! There are female sockets that Anyhow, I finally found them at Radar tise socket connectors that look like the come in strips, just like the male pins, Electric Co. Inc., 168 Western Avenue ones I used, but they come with cables and they are beautiful! The female pins West, Seattle, WA 98119. They are made and are expensive (part number R307- are very sturdy, in fact, they are as good by Aptronics, the female pins were part ND, $4.65, 50 pins). I think Radar is the as the Deans pins, which I consider to be number 929975-01, and the male sockets best way to go unless you can find a local the best available. And, best of all, the were 929936-01. They sell for $3.08 and supplier. price is right at 30

Radio Shack wire wrap pins and wire wrap sockets on 1/10th inch centers. You can make Four-pin connectors made from RS parts. lots of four-pin connectors from these sockets and pins. Very cheap at 50 cents per set! Red and black wire marks polarity.

14 MODEL BUILDER left, a 250 mah receiver pack is forward of 05's Bottom view of the Showmaster. Bottom of fuselage opens up to reveal seven-cell Sanyo power pack, and Jo Mar throttle is in the nose. battery pack and 20 amp fuse. Balsa cradle and rubber bands hold battery in place.

much for my column, but as I do a lot of MUST for us electric fliers! Larry has an Most of the shots appeared to be it, I subscribe to Popular Photography to article on page 20, entitled,“ Going U p!” between 500 to 800 feet up, and one, I’m keep up with what’s happening in which details how Larry built a Kodak sure, was at over 1000 feet. It was an photography. I like the magazine, it has Disc camera into the wing of his Olympic excellent panorama of a marina and a excellent articles, and it is not quite so 650 powered by an Astro 05. Wow! The bay. “ serious” or "arty” as some of the other article even has color shots (five of This is a first for electric power as far photography magazines. It also has lots them), and details how Larry does it. as I know, at least at the hobby level. (I’ll of “ how to” material. Somehow, I He found out that the electronics in bet someone in Europe has done it too, managed to miss the fact that Larry the Disc camera caused some radio but I haven't seen any articles on it.) Sribnick writes a regular column for the interference. His answer to the problem Congratulations, Larry, how about an magazine, I read the column, but didn’t was the Airtronics SR-4R radio, which is article on this in one of the model maga­ look at the name. How embarrassing! (I fairly low cost. Larry says that the total zines? The article in Popular Photogra­ wonder if that happens with this column cost of everything, ready to fly, could be phy was excellent, but let’s have it on a too? It probably does!) less then $250 if you shop aroond. Larry non-technical level for the public. A Anyhow, Larry is the chief of SR used the model 4000 Kodak which is the "nuts and bolts” article would, I'm sure, Batteries, which set the R/C fliers on least expensive model Disc camera. inspire a lot of electric fliers to try it too. their ears with their 900 mah batteries He initially used a servo to trigger the The only complaint I have about that are not much bigger than the 500 camera, but that caused a one-second Larry's setup (and it is a minor one) is that mah packs. This is handy for longer delay, so it was hard to plan theshots. He the Disc camera images are not as sharp motor runs in electric flight, or for now uses an electronic trigger, which is longer flight duration capability in the much faster. Continued on page 62 receiver pack. I have not tried them, but from all reports they have exactly what Larry claims: more capacity for practi­ cally the same weight. I knew that Larry flew electrics, but I hadn’t realized just how far he had com­ bined his photography with R/C elec­ trics. Then came the August '83 issue of Popular Photography! This issue is

SERIES/PARALLEL SPEED CONTROL

The O’s are the six lugs on a DPDT (center is off) toggle switch of 10 ampere rating. "B " is a toggle for manual off. This switch must be in the off position while charging batteries. "A " is the charging jack. It w ill charge the No. 1 and No. 2 batteries in series from a higher voltage (usually 24 volts) when the DPDT switch is in the high speed position. It w ill charge Obvious size/weight advantage of home brew the No. 1 and No. 2 batteries in parallel from a lower voltage (usually 12 volts) when the connectors over the commercial variety. DPDT switch is in the low speed position. For use with Astro 15 motors.

DECEMBER 1983 15 NIEUPORT 11-C By FRANK HOFFER . . . Here's a neat WW-I era scale subject that not everyone has already done before. As only about five of the full-size aircraft were built, the Nieuport 11-C was a rare bird to begin with. Don't let the three wings deter you . . . as only the top one has ailerons!

ABOUT THE AIRCRAFT Airplanes and Flyers of the First World Cement the fuselage sides to the The Nieuport 11-C Triplane was an War, Phelan (color three-views). firewall, making sure everything is in offshoot of the standard Model 17. The Fighting Triplanes, Hadingham alignment. Let the cement dry; then add Dozens of experimental aircraft were (photos and flight information). the cockpit floor. This will give you a built during the war years in a mad of the 7974-7978 War, solid start for the balance of the fuse­ scramble to outdo the other side, but Lamberton (photos). lage construction. most were abandoned after brief test­ I received technical assistance on At this point, I would recommend ing. This one was no exception. It, too, airfoils, etc., from Merritt Zimmerman, making the 1/8 in. ply former, horn fell by the wayside because test, pilots and flying by “Ace” Harwell. assembly and all, and also the rudder felt its maneuverability left something to FUSELAGE CONSTRUCTION post plate. be desired. Also, it landed like a rock. Start by making two 3/32 sheet balsa Cement the former assembly in place To the best of my knowledge, only a sides (use bottom view of the drawing to now. Using an X-acto saw, cut the total of about five of these aircraft were get the true fuselage length); taper the fuselage sides halfway through at the ever built ... all in 1916. They were of rear of the fuselage sheeting per the point of taper, draw them together at three different types, some with other drawing. the rear, and add the rudder post plate. wing configurations. The type I chose to Tape the two sides together. Then, Now you can add the balance of the m odel has been in the back of my with a fine-line marker pen, lay out all and all cross . modeling mind since the mid 1940s. positions for longerons and cross mem­ Make the cabane assemblies My research information came from bers. Make sure both sides are alike. per the drawing. (Notice the taper the following sources: For now add the 3/32 x 1/4 framing where strut meets sheeting.) When Aircraft of the 7974-7978 War, Thetford only up to the point where the fuselage completed, cement it to the fuselage. (basic Model 17 three-views and tapers. Double-check alignment and thecritical photos). Make the firewall and cockpit floor dimension for the top wing (4-5/8 in.). Air Progress magazine, 1965 (three- per the drawing. Lay out cross section Make all the top formers per the views). markings on the rear of the firewall. drawing and cement them in place.

Tail structure is light and simple. Both rudder and ele­ vator are actuated via scale-like pull-pull cables (above).

Fuselage structure is really very simple (left) as it is basically a box with formers and stringers. Forward plat­ form is where middle wing mounts.

16 MODEL BUILDER

sliding the unit to adjust, and then re­ tightening the nut. Whatever control plate you use, make sure it is oiled before each and every flight. The ball linksout to the tail rotor blade holders must also be a very smooth and free fit. For all new ball links that are a little stiff, snap the link on the ball, then gently work the outside diameter with pliers to loosen the initial snugness and CHOPPER “ break in” the link. This is very im por­ tant, especially up front in the cyclic/ collective system. Several binding ball By RAY HOSTETLER links can give a control run that will PHOTOS BY AUTHOR CHATTER never let the servo accurately center! If you expect to get the most from your • This month let’s take a look at one of helicopter. Not only will this give you a new ball bearing servos, make sure they the more subtle areas of flying model more reliable engine, it will also give you don’t have to fight stiffness in the ball helicopters. Or, put another way, what a chance to get the needle valve settings lin ks.. .. you may lack in flying skills can be made close and familiarize yourself with the The tail rotor blades should be up for by a finely tuned and trimmed specific characteristics of each engine. smoothly covered with Fas-Cal or a ship. Too often the kit is purchased and a similar plastic covering. This prevents BACK TO BASICS: brand new engine is stuck in to get the grass and small gravel from deforming THE SETUP AND TRIMMING chopper in the air as soon as possible. the tips of the . Thoroughly OF YOUR HELICOPTER Try to avoid this, it only leads to trouble Hot Stuff the root of the blade, and use It all starts before the helicopter ever later on when the new engine overheats some on the tip to seal the blade cover­ flys. The basic kit, no matter which and ruins the fit between the piston and ing there. brand, must be assembled accurately sleeve. When this happens, theavailable With some blades it may be necessary and precisely in order for the fine tuning engine power will be lower for the rest to bevel the root of the tail rotor blade to be accomplished successfully when of the engine’s life. Many times this can slightly so it will fit in the blade holder you're flying. My first plea would be for be the difference between a crisp per­ without spreading the holder exces­ newcomers to obtain assistance during forming helicopter and a “ dog” . sively. A block and sandpaper does this assembly. It’s always easier to do things TAIL ROTOR easily. Always bevel the blade root right the first time rather than rebuild a The bellcrank or slider pin from the before applying the Hot Stuff so a com­ newly completed helicopter. gearbox must be free to move back and pletely fuel proof blade results. As it is impractical to list all the points forth along its entire travel. Binding bell- Set the tail rotor blades in the holders of setup, I want to hit the major compo­ cranks will give sloppy tail control which so they can pivot back should a tail strike nents of the helicopter during the final can get frustrating during initial trim ­ occur. If they are too tight, they will not stages of assembly and initial setup. ming. be able to set their own lead/lag, which MAIN DRIVE COMPONENTS The pitch control plate which anchors will really shake the tail. If they are too Obviously the major components the ball links to the tail rotor blade loose, they will flop around and ding the must be right from the start. Improperly holders must not fit sloppily between as the rotor goes from idle aligned drive systems will generate the set collars. For conventional plastic to operating speed. vibration and shed gears, making it plates, there should always be a small The whole tail rotor unit should be difficult to get a baseline reliability level washer between the collar and the plate. balanced as per the July ’82 "Chopper needed to do the fine tuning. Probably The best pitch control plate I’ve worked Chatter." You can use thin strips of Fas- the most imporant point I’d stress is to with is the Circus Hobbies (Kalt) unit Cal on the tips to balance the unit, or have the engine bench run for 45 min­ which has a little bearing in it. It can be you can stick straight pins in the root end utes to an hour before it is put in the adjusted easily by loosening one nut, of the light blade. (Photo.) This way the pins are always kept in place by centrif­ ugal force which results in a neat, easily adjusted balance system. M AIN ROTOR just as with the tail rotor blades, the main blades must be covered smoothly with Fas-Cal. Bumps and imperfections in the covering can lead to aerodynamic imbalance later on. Most main rotor blade roots should also be Hot-Stuffed before they are attached to the blade holders. As the blades are inserted into the blade holders you should look for a nice, friction fit. Sometimes it is necessary to shim the blade roots with brass shims to achieve this. The lead/lag can then be set, the blade holder bolts tightened down, and the joint between the two Hot Stuffed. This gives a solid lead/lag which will still break loose should a tip over occur. With collective pitch machines (only), each blade holder should feather smoothly. Bumps or definite "notching” One method of balancing the tail rotor is to stick pins in the inside edge of the rotor blades. in the feathering action can lead to each Another approach for adjusting slight differences is to add a layer of plastic covering. blade tracking differently at various

20 MODEL BUILDER pitch settings. This can become annoy­ ing from one flight to another, and changes during any particular flight are common. The latest rotor heads with thrust bearings help alleviate this prob­ lem considerably, as the centrifugal loads are taken by thrust bearings and not on the feathering bearings. On early style heads, the centrifugal loads are taken by the feathering bearings, which are not designed for pulling loads. Be­ cause of this, they wear out faster and soon become “ ratty.” The seesaw must be free to flap up and down, as well feather along the flybar for pitch changes. This feathering of the fly- bar is very critical. You have to realize that the paddles feather every rotor revolution, which means 1400 actions per minute on a modern helicopter. Any binding in the flybar will fight the swash- plate, causing vibration in the system. Again, a lot of the newer style helicopters have bearings here too, so you can start Larry Jolly demonstrates his hovering technique at a recent MACs show in Long Beach, CA. to see that the latest ball bearing miracles have a higher price tag and higher per­ feel your trim constantly changing. And as susceptible to getting stepped on, but formance because of their engineering. if you can’t really tell the difference be­ again, it may not be as glitch free at the Most kits have pitch gages to help you tween a smooth and stiff linkage, don’t dangling antenna. set lift-off pitch. Use these gages; they worry about it too much because you One other thing you will want to try to are accurate and will certainly get you in probably won’t notice any trim chang­ do is mount the switch on the opposite the ball park for initial trimming. After ing either. You w ill notice that the heli­ side of the engine exhaust. This w ill keep the pitch is set on each blade, you can copter is extremely difficult to fly. . . . the switch contacts free of oil or dirt check the coning of each blade by RADIO INSTALLATION blown around by the exhaust. measuring from the tail boom up to the Install all servos with the rubber THEORIES OF SETUP trailing edge of each rotor blade. The grommets supplied. The receiver and Weall know that a beginner’s machine measurements of ‘‘soft” dampered battery packs should be wrapped with will be set up differently than the heads should be within 3/8ths to 1/2 1/2-inch Sig foam rubber and lightly expert’s, but you may ask, “ In what inch at most. On more rigid heads, the rubber banded in place for best vibra­ ways?” The answer to that question is coning should be within 1 /8th inch. Im­ tion protection. I’ve said it before, do fairly simple: rotor rpm. But to under­ proper coning will easily give you not mount the receiver or battery pack stand that, I’ll regress a minute and vibration and tracking problems during with double sticky servo mounting tape explain. initial trimming. Make sure these points to the plywood floor. Yes, it looks nice The fixed pitch helicopter has less are correct before you ever go out to fly. and is often used in display helicopters lattitude for varying rotor rpm than col­ After pitch and coning is set , balance the because of its neatness, but vibration lective ships. This is due to lift being rotor head as stated in the July ’82 will go straight from the to the developed directly from varying the “ Chopper Chatter” for a smooth flight receiver pots and battery leads! I lost rotor rpm, not the angle of attack of the the first time out. one helicopter years ago from this blades as in collective ships. Most fixed SWASHPLATE AND PUSHRODS mistake, and would hate to see you pitch helicopters have only the flybar The swashplate must move freely on repeat it. (Hiller system) for cyclic control inputs its uni-ball. Binding within the swash­ Run the receiver antenna directly out too, and this slows down control re­ plate will make the head fight (heswash- the side of the canopy to keep it away sponse automatically. So a basic fixed plate with resultant vibration. It’s kind of from other wiring. Do initial test flights pitch helicopter is limited in perfor­ like the stiff flybar we looked at earlier, with the antenna dangling; if this gives mance by its design, which does make it but with the binding now coming from glitch free performance, then try it with fairly easy to set up and maintain for the below instead of above. the antenna strung back to one of the novice. Break in all stiff ball links so they pivot tail fins. When the antenna goes back to On the other hand, the collective heli­ freely when snapped on the balls. If you the tail, it isou to f the way and not nearly copter will usually have the Bell and havea kit with poorquality ball links,do Hiller control system in its head. Because not hesitate to replace all links with lift is produced through the angle of higher quality ones. For many years I attack (bite) of the blades, rotor rpm is used only Kavan links, lately I have been much more flexible. About the only using the heavy duty Rocket City link exception to this would be the early style with the Hirobo ball as provided by SuperMantis kits with poor gearing from Gorhan Model Products. The heavy duty engine to main rotor. These kits must be Rocket City links as they come from the run at one basic rotor rpm for all setups. factory need the cheap aluminum ball The Schluter collective ships, the replaced with higher quality ones, at Gorham Competitor, and Kalt heli­ least for helicopter use. The heavy duty copters all have very good flexibility in Schluter links are also some of the best main rotor rpm while still producing on the market. excellent flying characteristics. Pushrods should be run as straight as Which brings me to one last point possible and not touch one another or before getting back to rotor rpm. If you any surrounding surfaces. (Rubbing live in an area where there is no one else pushrods is always a great way to make around who flys helicopters, you had your radio system go bananas. ..) If the better stick with a Cricket (or similar control runs are not silky smooth, you Full-size Jet Ranger control for the will never get crisp flight, and you will main rotor. What a mass of metal! Continued on page 94 DECEMBER 1983 21 Oon Langer built and flew this Nosen Cessna 310 as a demo ship for the Jomar Sync Sys­ tem at Ida Grove. Joe Utasi photographed the 310 on final with one engine dead. Don made a long, gentle approach and landed safely.

Here's another Utasi photo, this time of Bob Campbell's B-29. Model has just pulled out of a "hairy" out-of-control dive at Ida Grove Fly-In. It was totalled only moments after this shot was taken. Barely clears a quonsel hut. Loses tug of war with a locomotive. Can fire a speeding bullet. Swims well. Is occasionally addressed by his god. Fair Pilot: Hardly ever makes a T /O . . . continu­ ally ground loops. Makes high marks on wall when try­ ing to leap buildings. Is run over by locomotive. TYPES OF R/C PILOTS Is more powerful than a switch Can sometimes handle gun without It’s usually comforting to know exactly engine. inflicting self-injury. where you stand in the scheme of things, Is just as fast as a speeding bullet. Dog paddles. and how you compare to others. So Walks on water if the sea is calm. Talks to animals. here, for your edification, is a peerless Talks with his god. Poor Pilot: list of “ Types of R/C Pilots’’ which has Average Pilot: Never makes a T/O . .. doesn’t know been logically and methodically derived Often takesoff with ailerons reversed. how to put fuel in tank. by a hard-working computer. Be aware, Leaps short buildings with a running Runs into buildings. however, that your failure to squarely start. Recognizes locomotives two out of “ face the facts” will result in an errone­ Is almost as powerful as a switch three times. ous self-judgment and incorrect place­ engine. Is not issued ammunition. ment on the list. This, of course, will be Is faster than a speeding BB. Can stay afloat with life jacket. of little value to you. It is absolutely vital Walks on water in an indoor swim­ Talks to walls. that you evaluate yourself honestly . . . ming pool. P-Poor Pilot: even if it hurts. Then, and only then, will Talks with his god if special request is Always falls on airplane when un­ you have true peace of mind by elimina­ approved. loading in pit area. ting any nagging doubts as to how you Below Average Pilot: Trips over doorsteps. really stack up. Very frequently crashes on T/O just Says, “ Look at the choo-choo.” Super Pilot: because... Wets himself with a water pistol. Flies through trees with absolute impunity . . . never crashes. Lifts buildings and walks under them. Kicks locomotives off the track. Catches bullets in his teeth and eats them. Freezes water with a single glance. Is a god. Instructor Pilot: Only crashes student’s plane. Leaps tall buildings in asinglebound. Is more powerful than a locomotive. Is faster than a speeding bullet. Walks on water. Gives policy to his god. Above Average Pilot: Sometimes crashes own plane. Leaps short buildings in a single From Texas and the IMAA "Renegades" (Chapter 132) comes this Waco ARE built by bound. Charlie Morgan from Dario Brisighella plans. Model has Kioritz 2.4 engine up front.

MODEL BUILDER the rear. Sear the ends o f the nylon with a match to prevent unravelling. After the slant of the ski has been set slightly nose up, I use Comet (or similar) blobs of glue on the halyard so it won't . " Chuck included a drawing to supple­ ment his text, and anyone should be able to duplicate a similar pair of skis for his own BIG Bird. Thanks a bunch. Chuck, for getting this info to me during the summer; it’ll give almost everyone a chance to build and fly with skis during the major part of the snow season. Gotta confess that flying with skis always sets off the same fantasy in my mind . . . I see myself as an Alaskan bush pilot involved with heroic rescues and other derring-do. Guess my years of cropdusting were just not exciting enough. I, of course, have "other” fantasies .. . and one buck, American, will get you my best trilogy in a plain brown wrapper. SLINGS AND THINGS It seems like most of us are driving VW Being "natural" Texans, the "Buffalo Renegades" do everything in a BIG way . . . like this vans . . . and the rest are driving vans of 1/2-scale Pober Pixie designed and built by Carroll Cheeks. With a gross weight of 49 other denominations. At least that’s the pounds, and a wing loading in the lower twenties, the plane really "floats" around. impression I get from the number of guys who've "checked in’’ regarding my Plays in mud puddles. screws which you countersink. They are wing slings. The pic of my van in the May Mumbles to himself. number six or eight screws (about an issue got a lot of people to ’fess up as to SKIS: THE QUICK AND EASY WAY inch long). Be sure the slot in the screw how they were also lazy . . . and that Flying off of snow, like flying off of parallels the ski to prevent drag. Oh yes, these nylon slings were a good quick water, is tops in the sheer fun and enjoy­ I use No. 2 sheet metal screws to hold the and dirty solution to the wing trans­ ment category. If you live in snow aluminum to the pylon. portation problem. country but haven’t ever flown with skis "Sink small screw eyes about four However, a rather large contingent of because you’re just plain chicken about inches ahead and behind the pylon; use BIG Bird types yearned for something the cold, I may not be able to get you heavy rubber bands to hold the front of better than a curved sling for carrying motivated . .. but, if lack of suitable skis the ski, and make a halyard of nylon cord has been your only excuse, than I and Du-Bro metal landing gear clips for Continued on page 95 gotcha! Chuck Spencer, an avid flyer and BIG Bird lover who lives in Lansing, M ichi­ gan, rarely lets the winter weather keep him from flying . . . especially on those beautifully balmy 30-35 degree days when the snow’s got a firm but powdery- like surface. Here’s how Chuck and the other Lansing CARDS members get skis on their BIG aircraft F-A-S-T. "Well, what we have been doing the last few years is going to K-Mart, Sears, Wards, or any discount or sporting goods store and buying skis that children use. I think they're made of polypro­ pylene or some such semi-rigid plastic and cost about four to five bucks a pair. They are 22 inches long and four inches wide. A couple of years ago, our local K-Mart was clearing them out at the end of the season. I bought ten pair for a buck a pair. "Then, what you do is bring 'em home and cut the strap loops off. Make a pylon from basswood a half-inch thick, and line each side of it with K&S .30 alumi­ num for strength. Make the pylon about an inch higher than half the diameter of the wheels you are using; drill an axle hole, bush it with brass tubing, and hold it on the axle with wheel collars. This maintains the proper height for prop clearance. The pylon should be mounted two thirds of the way back from the front. The skis have plastic stiffening ribs running their full length. The pylons are screwed to the ski using flathead wood DECEMBER 1983 23 4th R/C SORRING WORLD CHAMPIONSHIPS

• The granddaddy of all R/C soaring competitions is, without a doubt, the biennial F3B World Championship. No other contest on the soaring calendar of any country has as much prestige, re­ ceives as much attention, or gathers people from as many points on the globe as this one. I might also add that no other contest costs as much to orga­ nize. run. or compete in either! But such is the price of greatness. This year was the fourth time in the history of R/C soaring that there has been a World Championship. The first three were held in South Africa (1977), Belgium (1979), and the United States (1981). This year it was the United King­ dom’s turn. Let me say from the outset, they did a fantastic job! Everyone had nothing but praise and compliments for the organizers. The competition ran like clockwork. It was said that the ratio of organizers and helpers to contestants was 1.5 to 1. I believe this was so, and I believe it was one of the reasons why this year’s WC ran so well and will be re­ membered for a long time to come. The standard by which all future WCs will be judged has been set by Great Britain. The site of the Fourth R/C Soaring World Championships (as it is officially The top F3B soaring team for 1983: Federal Republic of Germany. This team took the lead in the called) was the York Racecourse in the first round and never lost it. Left to right: Liese, Quabeck, Decker, and manager Schroeter. ancient walled city of York. Also known as the Knavesmire, this horse racing came the sun again. Roger Roth quickly me concerned a member of the U.S. track is vast. The track’s infield is about a ran over to the backside of the German team, Don Edberg. Apparently, Don’s mile long by about a third of a mile team’s nylon lean-to and scooped up first flight of the contest was the acid test wide. Its surface is almost perfectly flat, the ice into a Coke-sized pile ... he was for a possibly metal-fatigued tow hook. and consists of closely cropped grass. heard to say, “ It’s the only way I know to Four launches in a row (and four line You couldn't have picked a better site if get a cold Coke in this country!” retrievals in a row) were prematurely you tried. For most of the contest, however, the terminated by a pop-off. Larry Jolly was The weather for the six day event· was weather was simply beautiful ... for running back and forth with theairplane the topic of a great deal of talk. Wind, England, that is. The wind never really while Collin Dimaio fetched parachutes. rain, hail, sunshine, heat and cold were disappeared for very long, and most of After the fourth attempt, Larry ran to the all represented there. One observant the time it blew 10 to 15 mph. The gray field box and grabbed another tow fellow commented, “ Flow nice of you overcast that is so often associated with hook, then ran back and installed it on (British) to show us all four of your English "sunshine” usually burned off the Quantum. Little did anyone know, seasons in one day!" He was referring to by noontime. T-shirts with jeans or or even suspect, that on the fourth land­ the second day of the contest, August 2, shorts were the chosen garb, with a wind ing (which must have been a little rough when out of a sunny, warm mid-day, a breaker or jacket for when the warm sun with so little working time left), damage curtain of darkness advanced swiftly ducked behind a cloud. had been done to the system across the field, totally obscuring every­ As I was unable to be at the contest for . . . not major enough to be discovered thing it engulfed along the way, basically the first two days due to work schedules by preflight control checks, but major putting the fear of God in the hearts of at Model Builder. I missed the usual enough to fail under a typical F3B zoom the observers. Within a period of about “ settling dow n” of the contestants and launch. Needless to say, the terminal two minutes, a full-blown hailstorm was aircraft. By this I mean the folded wings dive from the top of the launch was raging across the expanse of the Knaves­ on tows, the broken fuselages on ner­ heart-rending, and the damage done to mire, burying everything under a two- vous landings, etc. I was even told that I the Quantum, irreparable. As this trag­ inch blanket of pea-sized frozen rain. As had missed all the excitement! edy occurred at the beginning of a q u ic k ly as it came, it passed on, and out One tale of woe that was described to round, and before Don had made lap

24 MODEL BUILDER Great Britain was a solid, second place team. Team fliers were (left to right) Stuart Blanchard, David Worrall had a unique ballast compartment: David Worrall, and Sean Bannister. Nick Neve was the team manager (second from right, standing). the w ing tip s ! See te x t fo r exp la n a tio n .

First place airplane was Ralf Decker's. Seen here is his method of installing Molded, one-piece fiberglass wings of Ralf Decker's plane featured C/F the servos (all five of them!). Craft had a removable nose cone. spars, molded F/G ballast tubes, neat setup (push rods visible).

one, he received three zeros. By the F3B wasn’t doing very well. I was also told York departure, so he flew the same rules, a contestant may not fly a backup that the Germans had taken a quick lead, airplane that he flew in the team selec­ model, or switch models, in the middle and were in the top three places. I was tion finals in Joliet, Illinois. As a result, he of a round. . . .But that’s not the end of surprised by this, but even more so found himself wishing he had finished it. Don’s misfortune. when I found out that the expected The Tai-Tai just has too much wing area The second event of Round 2 was winch race d idn’t materialize. I was told for F3B. If you think that the Tai-Tai's equally disastrous for Don. Part-way up that the U.S. team had the most powerful polyhedral wing layout was a handicap, the tow, the backup Quantum folded a winch on the field and that the Austra­ you’re only partially right. In the air, the wing. To Don’s credit as a pilot, he lians, with a Lucas M-50 truck starter Tai-Tai was every bit as competitive as managed to minimize damage during motor, had the second strongest. Evi­ the next guy’s plane, with the possible the crash, and ended up with a badly dently, with the wind blowing as it was, exception of speed where Alex had the damaged, but repairable airplane. Two the strong winches couldn’t be used to fastest time of the U.S. team (21.5), but more zeroes were regrelably given to their fullest advantage because of the also the slowest (28.0). Alex’s big handi­ Don. risk of line breaks, and the weaker cap was not in the air, but on the ground That night, Don and Brian Chan winches were competitive by virtue of . . . the Tai-Tai has no glide path control repaired the fuselage and wings. The air­ the wind and the stretch in the mono­ (spoilers, flaps, dive brakes, etc.). This plane was no longer pretty, but it was filament nylon line. made Alex lose four out of six landings, flyable. A was spliced into the Of the U.S. team, Alex was launching or roughly 200 points or more per broken wing, and an aluminum plate highest. He was out-launching his near­ duration event. That’s simply too much was epoxied to the top and bottom of est competitors by 50 feet in the wind, to give away to your competition. the wing. The repair lasted the rest of the and 100 feet in the calm (which wasn't Mark Smith, on the other hand, DID contest. very often). The slightly lower perfor­ finish his airplane in time for the York I was informed, on the night of my mance of the Tai-Tai was balanced nicely departure . . . just before! For most of arrival in York, that of the U.S. team, by his higher launches. the year prior to the contest, Mark was Mark Smith was in the lead, with Alex Which reminds me, Alex didn't finish working on a variable geometry F3B Bower not far behind. Don. of course, his intended F3B model in time for the ship. The wings were going to be made

DECEMBER 1983 25 Alex Bower (upper left) dodges his Tai— Tai outside LZ. Polyhedral ship had no spoilers or flaps and was often difficult to land. The Australian team (above) finished third in team standings. Fliers were (left to right) Dale, O'Reilly, Smith. Brian Alexander represented New Zealand (No. 24). All flew the Marjali design. Mark Smith (lower left) finished highest on US team (7th). He flew the Panic . . . "Wake up Larry, it's time to fly!" Käre Schanche of Norway (lower right) flew the K I T T 193 design, as did the whole Norwegian team. It featured built-up wings F/G fuselage.

Reinhard Liese (FRG) and his Milan II. M odel had spoilers and flaperons with TX mixing. of carbon and to telescope in and oul for the "Mark Y”. Il soon became known as grabbed everyone’s attention with his variable wingspan. (All by R/C as ihe the "Mark, why?” as it wasn't very good blistering speed run. The German tech­ rules insist.) Well, it didn't work out,and at all. nique for going fast in the four-lap run Mark was left with two weeks in which to If il sounds like I’m picking on poor (4 X 150 meters), is to make the first and start aiul finish a competitive, world- Mark's Panic. I am. However, Mark did second turns a split-S maneuver, and class F3B model, which he did . . . all ex­ quite a bit of picking at il himself! lust finish off with a pylon turn. Ralf used this cept lhal last hit about "com petitive" ask him. technique flawlessly and polished off and "world-c lass.” It has been said that, "If you gave the fastest speed run of the entire six- The Panic, as Mark «alls il, has a Mark a toilet seal with wings, he would day contest . . . 18.89 seconds! The molded fiberglass fuselage, and balsa- win with it." Well, il almost happened! troops were impressed. covered. foam tore wings. Would you Mark did have a flying toilet seal.and he That round, Ralf’s team mates showed believe lhal Mark made i ht» plug, the finished with a VFRY respectable seventh their stuff by going 21.0 (Reinhard Liese) two mold halves, and the fiberglass fuse­ place, the highest of the U.S. team. Mark and 22.1 (Dr. Helmut Quabeck). In that lage from lhal mold in less than 48 is a dam-good pilot! first round, the German team was: hours? Well, if you said no. you lost the The stars of the show were undoubt­ Decker (1st). Liese (2nd), and Quabeck bet! The Panic has a Quabeck-likeairfoil edly the Germans. lhal Mark designed him self. . .he calls it From the beginning, Ralf Decker Con tinued on page 86

26 MODEL BUILDER also with the experimental data of D.F. Volkersat Delft Universityof Technology in the Netherlands (Holland). The Wort- man FX62-K-131/17, the Epplers 61, 193, 201, 203, 385. 387. 392, and the Althaus AH79-100B all exhibit the effectsof large laminar separation bubbles (see Figure 5) at very low Reynolds numbers (below 100,000 R). (A laminar separation bubble is a small separation of the smooth flow of air over an airfoil's upper or lower surface. It usually reattaches itself to By BILL FORREY the surface in the form of turbulated, or PHOTOS BY THE AUTHOR rough, airflow, wrf) In each case, the profile drag prediction of the program is in poor agreement with the experimen­ disposal, and a vast wealth of aeronau­ tal data. This is because the program tical data as contained in the university’s cannot «ontribute the additional drag physics libraries (which I’m sure he has due to the laminar separation bubbles. only begun to scratch the surface of!) In On the other hand, agreement is ‘rea­ his correspondence with me he has sonably good’ for the FX6Ö-126, Clark Y, included such reference sources as: and Goettingen (Goe) 795 because they "Experimental Studies of the Eppler 61 do not have large laminar separation Airfoil at Low Reynolds Numbers” bubbles. (AIAA-82-0345). by Mueller and Burns. “ Based on these comparisons, I de­ University of Notre Dame, Jan. 11-14. signed several new airfoils applicable to WHAT’S COOKIN’ THIS TIME? 1982; and "NASA CP 2045, Advanced F3B R/C sailplanes using the Eppler I’m glad you asked. This monlh you Technology Airfoil Research, Vol. 1” , program. The emphasis was on low drag and I are going lo slog through some March 7-9, 1978, a report on low speed in a lift coefficient range from 0.1 to 0.6 very technical stuff. With apologies to airfoil design and analysis by Eppler and at R approximately 600,000 while main­ Model Builder’s typesetter and to any­ Sommers. What all this means (I think) is taining respectable lift/drag ratios at one who feels that technical things are that we can trust what Michael has to say high lift coefficients for R approximately beyond him. I present to you one man’s on the subject, and gain an insight into 100,000.” labor of love . . . make that two men’s the more analytical and predictive side Michael continues with some calcula­ labor of love, as I have had to decipher of model design. It may not swallow tions and formulas. I am going to orga­ and fill in the first man’s work a little in easily, but chew it over several timesand nize his material only slightly differently ordei to clarify it! That first man is none perhaps you will better understand it. in an attempt to make it easier to follow. other than Michael Seelig of the Univer- As I have said many times in the First, let’s have some definitions of sity of Illinois. His labor of love is caption information of the airfoils that I symbols; aerodynamics, with an emphasis on have published in this column, theoreti­ V = velocity in feet per second (ft/sec). discovering new airfoil sections for us cal lift and drag curves don’t necessarily W = wing loading of plane in pounds glider types! In the following column I agree with experimental data (i.e. wind per square foot of wing area (Ib/ft-). will translate (as best as I can) Michael's tunnel data) at low Reynolds numbers knowledge of computing the approxi­ (small chords, low speed air flow, and air mate L/D of a hypothetical "F3B glider” of low density all contribute to low for the purpose of comparing the per­ Reynolds numbers, and typically de­ formance of different airfoils on this creased airfoil performance). At higher same glider. It’s all theoretical, admit­ Reynolds numbers, the theoretical and tedly, but it is valuable for comparing experimental data come closer to agree­ the relative performance of these ment. Michael’s explanation is as fol­ airfoils. lows: Before we get into the heart of the “ I analyzed several airfoils using the matter. I will preface this column with Eppler program and compared the some background information. Michael predictions with the wind tunnel mea­ is an aerodynam ics student. He has surements of Dieter Althaus (author of access to a sophisticated computer with Profilpolarcn fur den Modellflug) of the a line plotter ancf a printer. He also has University of Stuttgart, Federal Republic the Eppler computer program at his of Germany (a.k.a. West Germany), and

Craig Huntziger, Park Rapids, MN, designed and built this 1374 sq. in. wing area R/C sail­ Craig will "kit” you a sailplane from your plane for 2-channel control. Wing loading: 7.5 oz/ sq ft; aspect ratio: 14.4 to 1. plans. See te x t fo r details.

DECEMBER 1983 27 The graphs below are theoretical L/D polars for three sections. The standard profile polars are in light lines and the Reynolds number corrected polars are in heavy lines. (See text for explanation.) In the examples below, the line marked "1 " represents a glider with a wing loading of 1.125 Ib/ft2 (18 oz/ft2). This represents an F3B glider in a speed run. The line marked "2 " represents the same glider in the duration event with a wing loading of 0.50 Ib/ft2 (8 oz/ft2). Both cases have a mean (avg.) chord of 10 inches.

Bill White shows you what a fun little slope ship looks like. The White's Lightnin' has no fancy airfoil, yet it flies super. Is FAST!

C = mean chord of wing in feet (ft). R = Reynolds number (a product of wing chord, air flow velocity, and for our modeling purposes, a constant factor: 6400) We find the Reynolds number of a given section of wing by .using the following form ula: R = 6400 (C) (V). The mean chord (C) is the average chord of the section of wing you are looking at. For a constant taper wing, this would be the tip chord plus the root chord divided by two. For a straight (no taper) wing, the mean chord is the same as the root and tip chord. If you have a combination of both, you’re better off figuring each one separately. The velocity (V) is deter­ mined by multiplying 29 times the square root of the wing loading divided by the coefficient of lift. Let’s see what this looks like: . R = 6400 (C)V (29 W /G ) R = 185600 (Cj \|( W/Ct)

R = (1.856 X 105) (Č) Vi W /G ) In a real life R/C glider (or full-size, for that matter) what happens when we increase the wing’s coefficient of lift by pulling back on the stick? Answer: the glider slows down because of the in­ crease in drag caused by the increased Ci. If you keep pulling back on the stick (slowly), the nose will continue rising, the angle of attack of the wing will 28 MODEL BUILDER new Seelig airfoils for you to try. New this month are the S-1144 and S-1120. Send Michael Seelig an SASE for coordinates. He would like to know how they work for you. SEELIG S-1144 continue increasing, the Ci will continue to go up . . . u n til. . . STALL!! The glider goes too slowly, the air flow completely separates from the wing and this causes gravity. In his own words: coefficient of the fuselage (Cut) which the wing to stop working. Part of what is “ The drag at various values of Ci can will be a constant and approximately happening here is that because the be computed as a function of the Rey­ equal to 0.007. glider is slowing down, the Reynolds nolds num ber (R). (Refer to above “ Next, pick an aspect ratio (AR) and numbers are decreasing . . . and we all equations^ Now, where W (wing load­ plot its drag. know what affect that has on perfor­ ing) and C (mean chord) are constant, “ Now, for full-size sailplanes, when mance, don’t we? (It gets a lot worse.) the Reynolds numbers can be computed the profile drag (Cow) is equal to the What Michael Seelig has done is plot at various Ci (lift coefficients). The Cd induced drag (Cdí) plus the fuselage's this deteriorating effect of the lift versus (drag coefficient) can be plotted as a drag (Cot) at some Ci, that is the maxi­ drag due to the dropping Reynolds function of Ci and R. I have done this for mum L/D. However, commonly. Cow is numbers. This is very typical of gliders the Eppler 193, the Seelig S1120, and the everywhere less than Cot + Cot. so it where the wing loading and mean chord Mike Bame MB-253515. (See Figures 7,2, (maximum L/D) has to be plotted. The are constant, and there is no outside and 3.) motivating force (i.e. motor) other than “ The next step is to guess the drag Continued on page 73

The Eppler program can predict the presence of TRANSITION POINT FIG. 5 laminar separation bubbles, but cannot contribute LpnUNDARV LAYER any drag to it. As soon as it predicts the transi­ SEPARATION POINTS tion point, it goes into turbulent boundary layer laws (i.e. it assumes reattachment with a small separation bubble. This is not the case at low R eynolds nu m bers. The case is illustrated at rig h t. Laminar At point A, (CL/CD)max = 0.92/0.0108 = 85.18. TRANSITION POINTS This is not glider's L/D. L/D is a function of /\ LAMINAR BUBBLE MOVES FORWARD WITH INCREASING ANGLE OF ATTACK Reynolds number. L/Dmax = CL/CDtotal where SEPARATION C/Dtot = CDw + COi + CDf· CDw is plotted here (corrected for R), and is the section's pro­

file drag. CDi is induced drag: "The price of lift." TOTAL SEPARATION CDf is fuselage drag and is approximately equal to 0.006 to 0.010 in m ost cases. It is constant. To find CDi, divide C l 2 by TTAR*(1.1 - 0.016AR). REATTACHMENT LAMINAR SEPARATION AR = aspect ratio. r r i . . I — — X _ _ a — —§ » "p ie ” * uuyc *«**»iör

DECEMBER 1983 29 By BOB SLIFF . . . It's small, it's light, its fast, and it comes in three versions: 29-inch span, 33-1/2-inch span, and 38-inch span. Electric power is provided • The Fast Eddie is a fine flying electric by any 05 system model intended for experienced R/C w ith six or seven pilots. It is a spectacular performer, especially when configured with the Ni-Cd cells. Astro 05 Challenger cobalt motor pow­ This model holds an ered bv seven 1.2 ah cells. unofficial speed Larry jolly piloted a Fast Eddie to an record, too! unofficial FAI. world speed record of 92.85 mph in level flight over a two-way course (measured, but not professionally surveyed) using the Astro 05 Challenger. So, it is safe to say that if you want a fast electric model, the Fast Eddie is the model for you. The Fast Eddie can also be set up for tion speeds assembly considerably. . If pattern flying is your thing, To minimize confusion, keep your then the Fast Eddie with Astro 05 Chal­ place in the instructions by checking off lenger motor and Taipan 7-6 prop will each step as you complete it, using the give you an excellent rate of climb. "( )” symbols provided. Aerobatic maneuvers are no sweat for FUSELAGE CONSTRUCTION this combination. ( ) Place the fuselage sides on the Don't count the ferrous magnet building surface with the bottoms motors out just yet! The Astro 05 XL and toward each other. This is to insure the Leisure LT-50 have very good per­ you’re building a right and left side. formance. While you won’t have the ( ) Glue the 3/16 sq. longerons and the spectacular rate of climb or speed of the 3/32 X 3/8 wing saddle doublers to the cobalt motors, the Fast Eddie will do fuselage sides. To the extent possible, most of the aerobatic maneuvers that an match the 3/16 sq. longerons so that aileron and elevator ship can do. they are of equal stiffness. This will allow As you can see by the plan, there are the fuselage sides to bend evenly when three wing size options: a 29-inch span the tail and the nose are pulled together. version (217.5 sq. in. wing area); a 33.5- ( ) Join the two fuselage sides over the inch span version (261.25 sq. in. wing plan top view using F2 and F3. Do this by area); and a 37.8-inch span version (283.6 placing the sides vertically over the plan sq. in. wing area). All three versions have top view, bottom down, and glue F2and been flown and tested. In each case we F3 into place at the positions shown. were very satisfied with the perfor­ Check the sides for squareness, both mance. The fastest is, of course, the vertically and horizontally, and allow the smallest wing version, but for pylon glue to dry. Then, add the 1/8 sq. up­ racing and aerobatics, the larger ver­ rights behind F3. sions with their lighter wing loadings ( ) Pull the tail together and glue. Do work best. The larger wings give not bevel the 3/16 sq. longerons, as you sm oother m aneuvers, and lose less want an opening at the tail fortheeleva- speed in tight turns. tor pushrod, for cooling air to exit, and In the following instructions, it is for the receiver antenna. Align over the assumed that the modeler has precut all plan top view and allow the glue to dry. shaped parts such as fuselage sides, ribs, ( ) Make the motor tube out of 1/64 fuselage formers, etc. This prefabrica- plywood. To do this, the plywood is

Electric power VIP's (I to r) Frank Heacox (S.E.A.M. president). Bob Boucher (Astro Flight, Inc.), Larry Jolly (Electricus, Whistler), and F A S T E D D IE designer. Bob Stiff (Hobby Horn). formed around the particular motor you are going to use. Begin by placing a piece of waxed paper on the motor where the plywood will overlap and glue. Then wrap the 1/64 ply around the motor allowing about a 1-inch overlap. Glue the lap joint with CA (Cyano­ acrylate, such as Zap, let, or Hot Stuff) glue. If you are going to use an Astro 05 Challenger Cobalt motor, then clear­ ance notches for the brush holders must be provided for. They can be cut after the tube has been formed provided you are careful in forming thearea that sticks out past the front of the motor. Further­ more, you must enlarge the hole in F2 so that the motor may pass through it for installation and removal. ( ) Enlarge the hole in FI for the motor tube to pass through. Then, with the motor still in the tube, insert the tube into FI, and install the tube in the fuse­ lage nose by pulling the two fuselage sides into contact with FI and the front edge of the motor tube. Be sure to check squareness and alignment over the plan top view. Glue with CA glue and hold in position until hardened. ( ) Install the top and bottom fuselage sheeting, cross-grain. ► —4V A\ ( ) Cut the 1/4 sheet so that you have a \V$I

Continued on page 77

Top view of F A S T E D D IE shows fuselage mods for Astro Challenger 05 installation.

DECEMBER 1983 FULL-SIZE PLANS ARE AVAILABLE, SEE PAGE 98 31 PRODUCTS IN USE

BYRON ___ .„ORIGINALS >M»m InAnlmi. Im Mi &01«. t"~‘ ^ ■—*

Photos by Henry McAllister

By DICK MOLONEY . . . The words "B yron Originals" suggest custom finishing materials, included in the kit quality and a personal touch. It is nice to know that this is indeed are all tne things you need like wheels, true of this company. If you are looking for a well thought out kit of hardware items, pushrods, hinges, and special items like tools, and even Loc- the French CAP 21 in quarter-scale, with all the trimmings, this is it! Tite to prevent vibration from loosening threaded assemblies. If you were to add • When I first received the carton from couldn’t wait to get started. up the cost of these items separately, it Byron Originals, I couldn’t wait to open Dollar for dollar, I don’t think there is would represent a considerable portion it. I was very much impressed by the a better deal going when you consider of the price of the kit, not to mention the quality of the CAP 21 kit. After being out that just about everything you need to many trips to the hobby shop to pur­ of R/C for a period of time, all the fire build the plane is in the box. With the chase these items (which you seem to and enthusiasm came back, and I exception of radio, glue, engine, and realize you need, five minutes after the

Quadra engine has Dario Brisighella flywheel (front) and home brew vibration balancer. hobby shop closes for the day). CONSTRUCTION NOTES Construction went very well, the fit of all parts was very good, and using the instruction manual made it very easy to construct the model. Included in the manual are pictures which illustrate the steps that are not easy to describe in words. Packed in the box is a piece of foam rubber which can be put down on the workbench to prevent things like drops of glue, scraps of wood, etc..from making small dents in the foam parts while you are working on them. The further I got into the construction of the Byron CAP 21, the more impressed I was with the fit of the parts. The cockpit and canopy assembly went together so well, that it is obvious Byron Originals has a mold maker who really knows what he is doing. Having made most of the molds MODEL BUILDER Three-quarter rear view of the Byron CAP 21 shows the markings of the plane flown by Eric Muller and Louis Pena. Note instrument panel.

for the DEE-BEE line of ARF models back symposium back in 1967 and wanted to my own machine shop, made this pos­ in the late 60’s, I can appreciate the build one then, but I never quite got to sible. The engine with balancer has been difficulties in making parts fit properly. it. run extensively on a test stand and in the At the time I was putting the canopy After a four-year layoff from R/C, I Byron CAP 21, the reduction in vibration together, I could not find a pilot that became interested in 1/4-scale, and in is dramatic. suited me, too big, too small, too heavy reading many articles to accumulate You may notice in the photos that the ... so I didn’t put one in. Now I wish I information, there seemed to be alot of engine is fitted with a Dario Brisighella had because the plane looks great sitting concern regarding the effects of vibra­ flywheel which in itself produces a big on the ground, but with the large size of tion on and radios. I dug out improvement in vibration and was used this model, it looks strange on a low fly­ my copy of the symposium paper and so that a comparison could be made. by to see an empty cockpit. Maybe built one to bolt on the rear of a Quadra Byron Originals could turn their expert engine. Being a machinist, and having Continued on page 90 mold maker loose making either a vacuum formed or molded styrofoam pilot. After the model was completed, I found out about a scale pilot made by DGA Designs (135 E. Main St., Phelps, NY 14532). This pilot is available in two-inch scale, 1/4-scale, 1/3-scale, and either military or civilian versions. The civilian version is made complete with suede jacket, visor cap, and sunglasses. The realism of this pilot is spooky! The fiberglass cowling and wheel pants were very well made and fit perfectly. When I assembled the pants to the aluminum landing gear, I added two 6-32 X 3/8 soft steel screws drilled through the aluminum gear and tapped into the aluminum reinforcement piece inside the pants to prevent the assembly from rotating out of alignment. RADIO INSTALLATION For greater peace of mind, I felt that I would like to have two servos each on elevator and aileron. I also added one extra servo for choke and engine shut­ off. I added shut-off because this air­ plane is being used as a test bed for an engine-driven vibration balancer, and I wanted to be able to shut off the engine in mid-air if it became necessary. SIDE PROJECT I first saw the design of an engine- This quartering front view shows the clean, simple lines of the CAP 21. The high quality of driven vibration balancer at a DC-R/C Byron's mold work is very evident.

DECEMBER 1983 33 QJaaáiiřuliJaSí

By e lo v m a r e z lower the frequency. In high vibration CIRRUS SUPER SPORT IV service and parts available for past environments such as ours, the thicker I received a letter from “ over there” , manufactured EK and Logictrol radios crystals are preferred and used due to from Walmir T. deMorales, who is including Logictrol manufactured their physical ruggedness, the basic touring Europe with the U.S. Army. He Cirrus, Tower,and Hobby Lobby radios." frequency is then multiplied with writes: I was also able to determine that your external circuitry to arrive at the de­ "/ need help to find a crystal for my receiver uses a fifth overtone crystal, sired operating frequency. The multi­ R/C receiver, a Cirrus Super Sport IV. which I confirmed is available from plication factor is referred to as “ over­ Normally, the crystal is no problem to Authorized Radio Control Service, 941 tones.” In W almir’s receiver, the crystal find, but that particular crystal, 73.415, I N. Main St., Orange, CA 92267. The price is cut to one fifth the operating fre­ could not find. The set operates on is $11, plus $2 for postage and handling. quency, plus, of course, the 455 KHz 72.960, 73.415 for the receiver. My Ace R/C catalog also lists a 72.960 intermediate frequency. "I sent my set to Hobby Shack, they fifth overtone receiver crystal. No. The latter 455 KHz is added to or returned it to me and I was informed XT415, at $9.60, plus $1 for handling. I subtracted from the multiplied crystal that the manufacturer of the radio does would also include 40

Don Gravelle's audible battery checker, designed to provide an audio signal when the receiv­ Transmitter and receiver charger for portable er battery drops to a preset value. Those preferring a visual warning could replace the buzzer use, by McDaniel R/C. Cigarette lighter plug. with an LED and current limiting resistor. (Resistors are 1/4-W.)

SHIELD - _ S H IE L D zt ------Ατι = ri ft —— — . ... -A-Π -nPi fl—______------UU -· -4 I « U ----- u u

The Porter and Kraft Systems shielded servo extensions are differ- providing the third conductor. The Kraft extension uses three con- ent in that the former uses two inner conductors with the shield ductors, with the shield connected to the negative lead near the Rx.

34 MODEL BUILDER Both are medium heat range . .. about 1.5 volts. Neither one is available with an R/C idle bar. The third 1/2A head is called the Glo Bee 5P sport. It is also in the medium heat range. It is a very high compression head that was intended for use with very low nitro fuels. Some flyers use them with high nitro. If you try one with ample nitro, it might be wise to use three or four copper head gaskets. Otherwise detonation is very probable. Laquna Hills. CA 92653 FUEL Many of the above comments apply in THE FAST LANE this gamesmanship will get you into the a similar manner to fuel. At this point, let What does that mean to you? Some­ "ball park," so to speak. From there on, me note, for example, that all 30% nitro thing? Nothing? To a fair number of your success will probably depend upon content fuels are not equal. The lubri­ people it means some sort of razz-ma- your tenacity. cant does have a significant effect upon tazz. Here in Southern California, indi­ CLOW PLUGS performance. In this regard, I am not viduals often use the expression, "Life in For no particular reason, I’ve put these merely referring to rpm alone. Needling the fast lane.” That can mean a lot of next on the winner’s check-off list. The and glow plug life are affected to a things ... depending upon who’s talk­ right plug will depend upon your fuel considerable degree by the lubricant. ing. On a freeway its the far left lane. and compression ratio as well as atmos­ What’s best? Again, it depends upon At a "crazies" get-together it could pheric conditions. Some observing can your particular event. However, for mean a drug smorgasbord. In a church, help here, but most likely you’ll have to racing, Klotz KL1000 and UCON 625 are it might mean a confessional. . . experiment on your own. At this point, two excellent lubricants to try. The local Obviously, there are many possibili­ let me note that not many modelers are hot rod shop should have both of them. ties. Some others are making model inclined to conduct two or three dozen If you don’t have time to get involved in airplanes, boats, cars, baby carriages, or tests on a given afternoon. Frankly, it’s extensive mixing and testing, my sugges­ what have you, go fast! There we go, somewhat of a pain, but it does provide tion is that you stick to name brand fuels. guys. The fast lane in our vernacular meaningful information. Simply put, try Products from a local home-brew fuel generally means: the best; thew inner; a different combinations of plugs, props, merchant may be good, or they may not. real smoker; a modeler's modeler; or and fuel. Use a very accurate tachom­ Well-known national brands may cost a . .. that so-and-so who lucked-out and eter (one which reads in 100 rpm incre­ little more, but they have withstood the beat me by a whisker. ments) record your observations. test of many years of satisfactory usage. OK, do you want some tips on how to There is no single glow plug on the Here’s some information about the alienate the other guys by winning? Of market that is best for every engine contents of a few well-known fuels: course you do. Well, I’m going to tell under all conditions. However, as a very FUEL NITRO LUBRICANT you how to do it with one simple word: general rule, colder plugs (usually Co* Clow Power 10% Approx. 20% CHEAT! Naturally, if you're caught, Cox Flight Power 15% Approx. 20% higher voltage range) are better with Cox Racing 30% Approx. 20% you’ll be personna-non-grata every­ high nitro contest fuels. A noteable Nole: Cox uses pure Baker AA castor oil as a where .. . not just in the ladies’ "John.” exception is a 1/2A engine which w ill be lubricant. Cox also recommends that Cox Clow So, let’s rule that out on both moral and Power be used in their cars. discussed later. With that in mind, the Fox Superfuel 5% 28% practical grounds. data in Table 1 should be helpful in Fox Duke's Fuel 10% 22% What's left? Quite simple, some effort shopping around for a better plug. Fox Missile Mist 25% 22% or work. If you want to be competitive, Note: The voltage data, nitro range, idle Fox 40-40 40% 20% even at casual club contests, here are a Note: Fox lubricant consists of 90% castor oil information, and quoted comments and 10% synthetic. Missile Mist uses a combination few tips. were provided by the manufacturers. of nitromethane and nitroethane. All Fox fuels also PROP Begin by observing what props the other guys are using. That cliche about, T A B L E 1 "It's what up front that counts,” is all too VOLTAGE NITRO true. Look closely. Chances are that they PLUG RANGE RANGE IDLE are not stock. Here now, right here and Fox Regular, short or long .9 to 1.2 now, let me caution you. If you modify a Fox R/C, short or long .9 to 1.2 Excellent manufacturer’s prop, you have begun a Fox 2.0 volt series, short or long 1.0 to 2.0 whole new ball game. Legally, you could Fox 2.0 volt R/C series, short or long 1.0 to 2.0 be solely responsible for any injuries or "Fox plugs are designed to be less critical so that they will work well under damages due to prop failure. Regard­ most conditions.” less, modelers often modify props espe­ cially for major competitions in racing GloBee Racing GB-1, short or long 1.8 to 2.0 30% to 60% Fair to poor and speed events. GloBee R/C GB-2, short or long 1.25 to 2.0 5% to 30% Excellent A good prop carver could have a GloBee Sport, GB-3, short or long 1.25 to 1.5 5% to 30% Good significant advantage. As a counter GloBee Racing2, GB-4, short or long 1.8 to 2.0 50% to 80% Poor measure, many clubs have strictly en­ K&B, short or long 1.25 to 2.0 forced stock prop rules. Some of them K&B R/C, short or long 1.0 to 1.5 Excellent have even gone to the point of issuing flyers a propeller just prior to his time to "K&B plugs are equipped with a newly developed platinum alloy wire fly! There are pros and cons to stock and element, making the coil element superior to the coil being used in any other modified prop rules, but whatever rule plug ... will withstand the terrific heat of the hottest fuels/' you fly under, you might try this. Sidle up to the "h ot shot." Offer him a With respect to 1/2A engines, there have propylene oxide as an igniter. cold one. Play the dumb role. Flatter the currently are only three glowheads K&B 100 5% Castor K&B 100+ 5% X2C synthetic so-and-so. Sooner or later he'll cut loose available. Two are manufactured by K&B 500 15% X2C synthetic with some worthwhile information. Cox: the low compression No. 325 and K&B 1000 25% Castor Check it with some others. . . casually of the high compression No. 1702. The K&B 1000+ 25% X2C synthetic course. There's no sense in plowing new former is supplied with Cox reed valve ground if it’s really unnecessary. All of engines, and the latter with the Tee Dee. Continued on page 74

DECEMBER 1983 35 9 % « g ------By DICK HANSON • This month we will discuss the flying tuned exhaust system. It weighs 10-1/2 deliver as advertised. tests we have done using the new O.S. lbs. The other model has the O.S. four­ I guess some of you wonder why the 1.2 four-cycle engine. cycle engine and weighs 9-1/2 lbs. gearbox doesn’t swing the props tested For those of you who are familiar with For testing purposes we tried three at much higher speeds than the four­ what we are doing, we have been different size propellers. These were all cycle if it has more horsepower. Well, it working on possible model and engine Zinger models because the are widely does swing the smaller props faster, but combinations for the new Master Class available and can be purchased in high the horsepower requirements for in­ "Turnaround” Pattern. The O.S. four­ pitch combinations. The sizes used were creasing propeller speeds goes up at a cycle engine is the latest engine tested 14- 8, 15-8, and 15-10. All props were non-linear rate. What I mean is that if an and is the first four-cycle model engine balanced, trimmed, and thinned. Do not engine must put out one horsepower to we have owned. try this unless you understand thorough­ turn a propeller 1000 rpm. it will not In past (way past) years we played ly the procedures used to keep the prop follow that 10 horsepower turns the with big four-cycle engines such as "fu ll stiff and strong. propeller 10,000 rpm. Also, the low rpm race” flathead Fords, warmed-up Cor­ The first tests were simply on-ground torque of the four-cycle engine is much vette V8s, supercharged Oldsmobile rpm checks. The gearbox engine turned better than the two-cycle engine. The V8s, TR-3 A and B engines etc., etc. So the 14-8 at 10,000 and 1.2 four-cycle net effect is that in the rpm range we the four-stroke engine is not a complete turned the same prop at 9500. The i 5-8 were using, the results were similar. mystery to us. It’s rather like com­ prop and the 15-10 prop ran at very The most significant part of the test pleting the circle in our engine involve­ nearly the same rpm on either engine: was the "human” reaction of other ments. 8000 with the 15-8 and 7000 (plus) with modelers to the models. If the sound of The picture at the top of the page 15- 10. Flying told a different story. screaming power appealed to someone, m

The author used two CAP 21s as test beds for the comparison of the new O.S. 1.2 4-cycle engine and O.S. VF A-1 2-cycle. Above: 1.2 engine mounted inverted. Below: 1.2 engine mounted horizontally.

. ΓW . i? m-J· * š ’ F · '· s’ ^

shows the engine mounted inverted. The four-cycle engine pulled the then the two-cycle gearbox engine was This was done with some skepticism as larger props more easily in the air. I had that person's favorite. However, if a we felt that possible flooding could been flying the four-cycle with the 15-10 more "realistic” sound was preferred, result. Actually, we found that we cöuld and was pleased with the performance. than the modeler invariably showed start and run the engines successfully in As we continued comparison tests using more interest in the four-cycle engine. this position, but the idle was not first one plane, then flying them to­ I’ll let you guess which sound was the dependable, and frankly,starting proce­ gether, it became apparent that the 14- most popular. dures were awkward at best. inch props were producing the best During the testing, we noted some Turning the engine on its side (see overall results. The most noticable features of the four-stroker that we liked photo) with the exhaust stack down is difference was in climbout on takeoff. and a few that we didn’t like. On the really the best mounting arrangement. When we tried comparison speed runs positive side, we liked the adjustable The engine will dump any excess fuel using the 14-8 props, it appeared that the throttle arm and simple choke setup. On out the exhaust valve because it ison the models were fairly evenly matched. The the negative side, we thought that the lower side of the head. Also, the car­ real difference was in vertical perfor­ exhaust pipe and pressure tap chamber buretor feeds slightly uphill which mance. The gearbox had the edge, BUT could have been engineered better. This prevents puddles forming in the intake the four-cycle was able to do all the is because the exhaust pipe is held in system. Finally, the glow plug is very maneuvers. The gearbox simply has place by tightening a packing nut against accessible which makes quick starting a more horsepower in reserve. This is not the flanged end of the pipe which in snap. surprising as the VF 60 is very strong and turn tightens against a soft aluminum The third photo shows both test can exceed two horsepower without exhaust gasket. The engine’s vibrations planes. The C.A.P. in the foreground has much trouble. The 1.2 four-cycle is rated the O.S. VF A-1 two-cycle engine and a at about 1.25 horsepower and seems to Continued on page 92

36 MODEL BUILDER

Above: Real nostalgia! Winner of the Skelley Oil Co. event, a Jimmy Allen Bluebird as faithfully reproduced by Larrie Schaeffer.

Left: John Pond scaled up this Comet Clipper to a large, ten-foot span model, same as a Valkyrie. It is powered by an O.S. 60 four­ cycle engine, and weighs 6-3/4 lbs, total! It's a real floater! Right: One of the most successful designs by the Scientific Model Airplane Co. was this Oriole. Earl Hipp, of North Platte, Nebraska, holds the model. Below: Every so often someone builds the Maurice Schoenbrun Gladiator. This one, powered by an Ohlsson 60, was built and flown by Lawrence Nigh.

the engine cost has gotten to the point this issue) recently shown at the MAC Brown jr. where trading is the only way one is trade show. Here is what the situation Wahl Motors ... Temporarily suspended going to get one of the high priced looks like now: Hurleman engines engines. The writer does not condemn Wahl Motors .. Temporarily suspended this as it is strictly a result of "supply and ENGINE MANUFACTURER STATUS Megow 79 demand." With over 1000 collectors, Orwick 64 Spielmaker Motors...... Available and in many cases only several hundred Klause and McCollum ... In production Jan. 1,1984 McCoy 29 of any particular engine manufactured, Super Cyclone S & A ...... Temporarily suspended the demand can easily outstrip the Super Cyclone Co...... Available Forster 29 & 35 supply! ]an. 1, 1984 REMCO ...... In production However, for the flyer who is caught Hornet 79 in the middle of the engine shortage, Morrill Motors...... In productionForster 99 help is in sight! Two more companies Simplex 25 REMCO...... Production problems have announced the manufacture of Morrill M otors ...... Temporarily out of Deezil A engines, the Orwick 64 as marketecj by stock Burford (Australia)...... Available Joe Klause at the recent L.A. Colecto- Ohlsson Cold Seal Mechanair Jan. 1,1984 gether, and the Super Cyclone (see ad, Wahl M otors...... In productionBert Striegler...... Immediate delivery

Class A -B size Cloud Snooper designed and flown by Ed Konefes. Larrie Schaeffer tried this Lanzo Puss Moth for the Rubber Powered Bob Larsh has plans. Model is powered by an Ohlsson 19. Flying Scale event at the La Junta SAM Champs.

38 MODEL BUILDER Woody Bartlet, past SAM president, always makes an appearance at No SAM Champs would be complete unless Ken Hinton of England the SAM Champs. Here he is launching a beautiful O&R 33 powered showed up. This time he brought with him a Scotty Murray Topper Zipper. Asphalt launching pads were provided by the organizers. powered by a Mills 1.3 diesel.

As no scaling is allowed in Free Flight O/T, Jim Ramsey flew this Fred Emmert, Belmont, California, has had this Forster 99 powered standard size Gas Bird. Ramsey uses an Arden 19 in this one . . . Anderson Pylon for a long time. It flies better every year! Model is compare with original using a Dennymite 56! lightweight and very clean.

Baby Cyclone intentional and we would be glad to than the annual SAM “ Bean Feed” Carlson Replicas ... . Only 50 to be mfd. publish your name as a source. started up at the Catholic Community In addition, there are numerous com­ ANNUAL SAM CHAMPS BEAN FEED House at 6:30 p.m. Contest Manager Jim panies and/or people involved in the Seems like time flies when you are Thomas did an outstanding job of ar­ conversion of modern engines from having fun, and the MECA Collecto- glow to ignition operation, restoration ranging catered food for 200 people gether no sooner started to wind down. (mostly reserved in advance). of old engines, and manufacture of parts for old engines. A short list follows: 77 Products (Otto Bernhardt) Chandler Engineering STEELE'S Les Payne (associated with REMCO) Roger Mason R."b :'SPECIAL s Best way to get addresses is to read DRAWN BY ALLEN POND c Model Builder, SAM Speaks, ‘‘MECA A Swap Sheet," MECA Bulletin, or the L T ------tz3/4 Model Engine Collectors journal. If we E have overlooked anyone, it wasn’t - 4 — X-L

3-3/8-- MOUNT LAYOUT

REAR VIEW OF TIMER

3-9/I6"

E-gads! It's a Tsetse F ly ! Charles Grant 1938 M.A.N. plan built by Art Watkins.

DECEMBER 1983 39 Mitch Post tunes up an Arden 19 powered Snuffy VI. Model is a Marion Knight, Houston, Texas, flies a good looking Simmons Gas Bob T o ft design. Champ (Class C glow event) in practically every contest.

the Bean Feed or hear about the field rules felt that some of the standard SAM flying rules had been usurped on the field. Closer examination of the problem reveals that as early as February, notice was given that some changes were inevitable because of the large amount of entries. Be that as it may, everyone still had fun! For a change of pace, this column is going to revert to the old system of just publishing pictures with no accompany­ ing text. In the case of the SAM Champs, no introductions are deemed necessary as most of the contestants are well- known. Besides, there is enough in the The Texas "Planesmen” did very well in the A little-known Maurice Schoenbrun design is SAM Champs. Here is the hardware that this Theo-Radical, flown by Lawrence Nigh. text for the reader to familiarize himself. they took home! Model is powered by Madewell 49. We are greatly indebted to Harold Johnson of Minneapolis, Minnesota, for it better myself! Imagine the surprise when the engine the excellent photos taken of the free Before we get to talking about the collectors arrived in force and just about flight action. Taking pictures is almost a contest proper, this is the time to insert doubled the demand for food. Thomas full-tim e job, and Johnson should be the popular "Engine of the Month” was equal to the situation; stalled a little commended for his efforts. Other section. I’ll bet not too many of you while additional food was prepared, and photos of the R/C Assisi portion are by fellows have seen the actual engine most important of all, made sure the “ Bo” Buice of SAM 29and thecolumnist. presented this month. huge drums of Coors beer were kept So we have more than plenty for the ENGINE OF THE MONTH flowing at all times. Turned out to be a reader to enjoy. This month, we are indebted to Karl real success! (At least the beer portion Weatherwise, it was just plain hot/ As Spielmaker, known variously as“ Bearing was from this writer’s viewpoint.) Jim Lobb reported in his article in the Von Spielmaker,” “ Krazy Karl,” etc., for As usual, there was the annual renewal “ Planesman” , ‘‘Tell you fellow, the SAM his use of a rather little-known engine of friendships, the camaraderie around Champs at La Junta was one real tough produced by Robert Steele directly after the tables, and the general atmosphere endurance test! The guys who flew and World War II. of cordiality everywhere. This is what placed under the flying conditions that Model gas competitors first became SAM is all about ... FUN!! Late an­ prevailed during the contest were top- aware of Steele through the D & S nouncements were made regarding notch! Much will be said and remem­ (Delong and Steele) engines that were flight limits, motor runs, and other bered about the temperature, the wind, carefully parceled out to the hot pilots restrictions. Those who did not attend and the flying field." Couldn’t have said inthe hope that their models would win.

Fun in the Otero Junior College dorm. Jim Lobb lights the cigar The SAM 30 boys did rather well, too. Here they pose behind the for "surgeon" Dick Huang (gotta keep things sanitary!) as he op- hardware that they won at the SAM Champs, erates on injured Cumulus bird. Joe Percy says, "W hat!"

40 MODEL BUILDER How about the most popular rubber powered kit of them all? The If you come from Canada, why not fly a Canadian O/T design? Comet Sparky as built by Ernest Linn. (Lidgard designed model.) Peter Mann shows us the Easybuilt 1936 Rainbow. Neat flier!

The R/C desk people (all hard workers) give us a big smile in spite of the very hot weather. Left to right: Evelyn Woodman, All the way from Washington, O.C., Jim Coffin came to La Junta, Dorothy Granieri, and President Mike Granieri. Colorado, to fly this Super Cyke powered, Ray Heit Scram. The year 1940 was a good one for D & S, During this time, Delong and Steele Model Craftsman, was a product of but the oncoming war negated any were the driving force behind the Steele Machine Co., 10529 Aspinwall favorable publicity. The War Procura­ design of the Cannon engines. The side Avenue, Cleveland, Ohio. This ball tion Board would not authorize the use draft intake was reportedly Steele’s idea bearing engine was priced at $32.50 less of metals for the production of model as he did continue this feature in some coil and condenser, a rather high price engines during this period. of his postwar designs. Of course, we are for a Class B engine. referring to the early sandcast versions With their "exclusive timer” on the of the Cannon engines. With the war back side of the crankcase, the adver­ drawing to a close, Joe Delong and Bob tisements at that time would brag, “ Mr. Steele went their separate ways. Dealer, give the boys the best.” Another As most engine collectors are aware, slogan noted in the ads was, " I t’s always Delong produced an entirely different in the money.” No question about it, the engine utilizing a rear rotor intake. R.B. engine was a good runner, but as Steele continued with the proven for­ pointed out in previous issues, because mula as can be seen in this m onth’s sub­ the timer was located in the rear of the ject, the R “ B” Special. engine, modelers looked upon this as a This engine, first advertised in the 1946 Continued on page 62

Don Bekins scaled up this Gas Bird tw o times the original size and came up with a winning Texaco model. O.S. .60 4-cycle.

The Eagle Wing Model Aircraft company produced this all-molded balsa kit of the Pacific Coaster in the late 40s. See te x t.

DECEMBER 1983 41 done vast research on aircraft design from his native land. The model, called "Karasů" (the "Crow” ), was first flown in frew rong befaw the Light Blothuhs!’ — ARE YOU READY FOR THIS? — 1891. Yes. a Karasů was first successfully flown a distance of 33 feet at the Marugame attache case for John Wayne. Parade Grounds, Japan, on April 29, I had also ordered a duplicate made of 1891. the perpetual trophy awarded annually The original craft was designed, built, at our SAM Champs and contacted Don and flown by Chuhachi Ninomiya.who Burnham, getting his permission to call it was born in 1866 and died in 1936. Dr. “ The Burnham-Sheelds Trophy." That Ono re-designed this ancient craft and does sound quite British, what? Needless flew the model pictured, at Old Warden, to say, David and his hearty band were Bedfordshire, on July 16, 1978. delighted. Saturday. August 25,1979, off Many variations of the KARASŮ had we drove to Barkston Heath for the been flown in Japan previous to the Old opening of the British Nats. Warden Exhibition. Members of the By now, you’re probably wondering Kyoto Free Flight Club with winning what all this narration has to do with an Crows included Mr. Imaru, who did 276

By DANNY SHEELDS .. . So you think yo u have an old Old Timer, huh? Well, here's one that dates ■ K flR flS U . back to 1891 .. . yes, that's 1-8-9-1, my friends! I was privileged to meet and become ancient Japanese model airplane, right? seconds in 1977, Mr. Iwamura, who won friends with a wonderful band of “ in­ Well, I always start by disgressing, and the prestigious Ninomiya Prize in 1961 vaders” from England in 1978 at the SAM then lead up to the B.C. — Basic Crux! with on an O.O.S. flight,and Mr. Hakuno CHAMPS in New Jersey ... the Coyle On Sunday night, inside one of the who did an impressive 237 seconds with Field Drop Zone to be precise. This huge R.A.F. hangers at Cranwell. while his version. scurvy band of knaves, brigands, and watching Mark Hinton fly his champion­ Some history, huh?. . and we thought pussycats from across the pond en­ ship indoor Santos Dumont 14 bis, Dave that we started it all . . . or was it the deared themselves to one and all with Baker spoke of a friend he’d made. The Russians??? their warmth and joviality. gentlemen he referred to was a sociology Well, I was fascinated by Dave’s story One of the events that they seemed to professor from Japan, now teaching in and said I’d like to see the drawings of enjoy most was the twin pusher mass London. The good doctor was a model launch, which I sponsor. The winner plane builder and enthusiast, and had Continued on page 81 (last one down) receives a plaque to keep and a giant economy-sized perpe­ tual trophy to hold for a year. Two horses rumps decorate the top of the trophy to symbolize "tw in pushers.” Get it? Oh well, sometime in early 1979, I received a note from Dave Baker, the self-appointed, but duly-annointed leader of this Rogue’s group, stating that SAME (that’s SAM of England) would like my permission to stage an "A-frame” mass launch event at their British Nats. I then called Dave on the phone (even with my voice, a phone was needed!) and told him that my permis­ sion was not needed to run the event, and that I was delighted by their enthu­ siasm for this most basic type of antique model airplane. I also offered to send over my Donald Burnham twin pusher to be flown by proxy. Dave loved it! After two weeks of musing, persuing, and conjugation, I called Dave again, and he was beginning to think I owned phone company stock. I asked him what he thought of me bringing my TP over, instead of sending it. ..? I’ll never forget his answer! “ Mahvelous Danny .. . just mahve- lous! They've never seen anyone like you, here in England!” I left Dulles Airport in Washington on Wednesday, August 22, 1979, carrying my Burnham twin pusher and a Harry Edsel single pusher stuffed in to an ornate, decal-covered box with a brass handle. Large, but thin, it looked like an ”Oh my gosh, it'll never fly!" .. . "This is a joke, right?" 42 MODEL BUILDER DECEMBER 1983 FULL-SIZE PLANS AVAILABLE - SEE PAGE 98 43 Left:Bill Osborne's U-60 Miss Thriftway took Best Boat honors at the 1983 Northwest Model Exposition. The scale detailing on this boat was fantastic: nail holes, rivets, etc. It even had its own scale trailer!

Above: The driver’s compartment of the Miss Thriftway was also very detailed. It fea­ tured a complete instrument panel and scale steering wheel. The engine compartment featured a realistic V-12 engine. RIC POWER BOATS By JERRY DUNLAP

“ DEAR SANTA,” vitally important to the pursuit of build­ years is a hand held, high speed grinder. It’s gelling inwards that lime of year ing models. There are many tools that I There are a number of firms that offer when one might be giving some con­ employ during my model boating activi­ this type of tool . . . Dremel and Black sideration lo appropriate items to re­ ties. I’m going to take a little space here and Decker to name just a couple. The quest of ihe rotund fellow in the white and discuss three that I’ve found to be two bits I use most with my hand grinder beard and red suit. Of course, I believe extremely helpful during the construc­ are the steel circular saw and the barrel in Santa Claus, don’t you? How could I tion of both model boats and model sander. Last Christmas, my wife gave me not believe? After all, I’m the one who aircraft. the ).C. Penney variable speed hand has Barbie’s friend, Ken, dressed in a life The first major investment I made in a grinder because my old Dremel was jacket and helmet in the driver’s com­ hobby tool was the purchase of a Moto- getting rather tired. I’ll have to confess partment of my 7.5 tunnel. Personally, I Shop from Dremel Manufacturing. With that I’ve never even used any speed like lo request tools for possible gifts all the attachments, this could be all the other than fast for model construction during the holiday season. It’s pretty tools many hobbists will ever need. I do purposes. One of these days I’ll have to difficult lo gel ihe wrong size, color, or a considerable amount of construction try cutting or sanding at a slower rate. I pattern when you ask for a tool. Usually of original design boats employing find that the circular saw on my hand you don’t have to wait in line the day plywood construction. The Moto-Shop grinder is extremely helpful for a variety after Christmas to exchange a tool. has become indispensible for this type of cutting and shaping needs. The hand Another nice thing about tools is that of model boat construction. My Moto- grinder is definitely a handy tool to have they can be used on those other gifts Shop is used exclusively for cutting available for model building activities. that have the following message (or parts. For cutting, I have found the wide The last tool that I’m going to recom­ warning) on the package, “ Little or no blade to work much better than the thin mend is one that is dual purpose. This assembly required.” I know Christmas is blade. Both Sears' and j.C. Penney’s tool is “ The Finishing Machine” from going to be a happy day if none of those catalogs have this Moto-Shop with their Black and Decker. It has a g rin d in g packages are unwrapped. name on it. wheel on one side, and a six-inch sand­ For the serious modeler, tools are Another tool that I have used for many ing disk on the other side. The sanding

Howard Price's Sport 40 Vernors engine cowl detail. Even the obvious Howard Price entered this Miss Lynnw ood Equipment hydro in the details should be given careful attention. scale competition. Note the excellent detailing on the dummy engine.

44 MODEL BUILDER Here is a good example of one of the better driver's compartments Howard Price entered this beautifully detailed Vernors in Sport 40. found on an unidentified R/C Unlimited. Cockpit detailing like this wins points in scale judging. disk has a platform to assist in holding ening. Would a larger boat using K&B’s than inboards do when the water the material to be sanded. The sanding 7.5 outboard be even more stable?" conditions become choppy. I believe disk has proven to be more than ade­ It is my belief that Barry is doing the that the higher weight distribution of quate for all the sanding and shaping right thing in considering the type of the outboard accentuates the side-to- needs I’ve had. The grinding wheel is hull that would work best under the side rolling motion. An inboard vee will sufficient for most model boating grind­ typical water conditions in his area. roll in rough water, however, the lower ing requirements, but it is not a heavy Although I dearly love my tunnel boats, engine location of the inboard seems to duty grinder. However, it has proven I’d be first to admit that they are assist in minimizing this action. itself useful for sharpening turnfins, definitely not the type of boat that one One of the classes that caught my , and . If there is a draw­ wants to be running on rough water or attention at the ‘‘B.C. '83” event was the back to the disk sander, it’s the dust that windy conditions. At a majority of the .65 and .90 deep vee boats. The per­ it creates. However, dust is a problem races that I attended this year, the racing formance of these boats was most im ­ with most sanding activities. in the tunnel classes was greatly ham­ pressive. When it comes to ease of Well, those are Jerry’s recommenda­ pered by wind-chopped water condi­ starting and reliability, the larger en­ tions for your Santa’s gift list. They are tions. This was certainly the case at the gines are definitely a worthwhile con­ definitely three very useful tools when it "B.C. ’83” N.A.M.B.A. Internationals in sideration. More than one model boater comes to building models from wood. Vancouver, Canada. Water conditions who runs the big bore .65s or .90s has Now . . . start believing in Santa! were so bad during the running of the told me that he breaks far fewer parts in 3.5 Tunnel event that some heats had no his larger engines compared to his SELECTING A MODEL BOAT finishers. smaller bore engines. Granted, the FOR SPECIAL LOCATIONS A deep vee design is certainly a much initial costs involved in setting up a big Captain Barry Schoen of Grand Forks, better choice if water conditions tend to bore deep vee are greater. However, North Dakota, wrote asking for some get on the rough side. Having run both that initial investment could start look­ guidance in the selection of a model inboard and outboard vees, it is my ing real good when water conditions boat. I believe Barry has some valid opinion that an inboard deep vee has dictate that smaller boats he put on the concerns about a suitable model for his better handling characteristics in rough beach because they cannot cope with location. I’m going to use a portion of his water conditions than its outboard lumpy water situations. letter to get us into this discussion. counterpart. The reason for this has to SPEAKING OF BIG BORE ENGINES " North Dakota is a very windy slate, do with the weight distribution of the Look for the new K&B .67 to be out by which means if you're going to wait for two forms of power. The outboard is on the time this column appears. This will the lake to he glass smooth you may the transom of the boat, and of course, be the inboard edition. I do not know never get your boat wet. I like the looks the weight is much higher than an the price, but I would assume that it of tunnel hulls like your Hot Shot, hut inboard installation. Under calm run­ might be somewhat less than foreign I’m not sure they can handle rougher ning conditions, this higher weight powerplants of the same displacement. water. Would a deep vee hull be a wiser distribution is not a critical factor in the This particular engine has been under choice? How rough of a water surface handling characteristics. However, it has development for about three years. can they handle? Your article on the been my experience that outboard deep Magic Boats Stingray was most enlighl- vees seem to rock with more violence Continued on page 92 R i^it: Gary Teeter's second place Sport 40 h y d ro . Circus Circus. Had pics of full-size.

Above: Jerry Dunlap's cockpit detail. That's a Ken doll named "D unny"... hm-m-m.

DECEMBER 1983 45 New body from Associated: the 1/12-scale Mirage. It's clean and fast!

• After a several-months-long bout mistakes in tire selection, and I lost a few rubber compounds for 1/8 and 1/12 detailing the setup of a 1/8 club racer heat races because of those mistakes, cars. The biggest gain in this battle seems known as the Associated RC150, we can but there is absolutely no substitute for to go to Associated; they have a new rear now move along to some of the new experience when it comes to racing. tire compound that really works, in fact, things that have been backing uparound Wrong moves can prove just as valuable it’s better than anything yet offered. Last here. Just rem em ber the preceding as right ones in gaining this experience. m onth’s column had pictures of these series of columns when you get ready to About the time that I figured I had it all new tire/wheel sets and a rather non­ race 1/8 . . .or when you have some spot sorted out, along comes the era of descript caption which indicated that of trouble with your current car. A ton of differential cars. While rear rubber they offered more grip, along with faster experience went into those columns; no selection remained about thesame, front wear. Well, they do wear faster. How­ other magazine has published such a tires which worked became softer. Now ever, at that time I didn't realize just how series, nor are they very likely to do so in we are heavy into suspension 1/8 cars much better bite they gave. the future. (and semi-suspension 1/12 cars) that use Joshua installed a set of "medium" TIRE WARS nearly the same rubber in the front as in rears ('‘Yellow Dots” in Associated I am one of those racers who has the rear. This is an unbelievable turn of jargon) on his RC500, but with the low always been very concerned about tires, events, assuming you have been around power level he runs (.161 insert in the as evidenced by the huge rack of tires long enough to have seen the change. carb) almost anything works okay. So, which the Dirty Racing Team has on For example: most R/C car buffs have while we could see that the car was hand at all races. You can do anything seen the starter wheel which Associated “ stuck better,” we alsodidn’t need togo you want to the chassis . . . massage the sells; it is mounted on a Pylon starter to stickier fronts for more steering. At motor, pour heavily nitrated pop into motor and spins the flywheel on 1/8 the same race, I used a set of mediums the tank, run a body that is super low to cars. While it is just passable in that on my Delta Eagle, but I made the the ground, and all of that good stu ff. . . application, the wheel is actually what mistake of using them all day. W ithout but those tires still have to transmit the we used to use as front rubber on 1/12 other tires to compare to, I d idn’t realize power to the ground and fight to keep gas cars! Even more outrageous is the the difference. the car from sliding into the outer fact that they worked quite well in that Now all that has changed, I’ve tried barrier. To put it another way, with the application, which ought to tell you a lot the usual rear tires (Delta " A ” com­ chassis, motor, and body working prop­ about how far chassis development in pound) back-to-back with Associated erly. the only way to gain an advantage is 1/12 cars has come. Yellow Dots. My advice is that you had with the tires. In fact, the proper choice With my lesson learned, I have for best get yourself on over to Race Car of tires goes a long way in tuning a years used Delta rubber almost exclu­ Central and pick up on a couple sets . . . chassis to the track. sively in both 1/8 and 1/12 scales. They yellow is most definitely not mellow, I first became aware of tire selection were the only ones offering graded tires these tires work! The best part of these fairly early on when I started to race for the rear, and while others had a recent developments is that Associated Delta Super Js. Even way back then, selection of front tires. Delta’s offerings is now grading rear tires, and this new Delta was offering three grades of rear seemed to make more sense at the track rubber is available in firm (Green Dot) tires and four or five sets of front tires. when you wanted to alter the handling and soft (Red Dot) grades. We haven’t Quite frankly, it was a little confusing! only slightly one way or the other. tried either, but the impression I get is However, with a few practice sessions However, the "Tire Wars” have now that the Yellow Dots are almost univer­ and several races, things started to make heated up considerably with both Asso­ sally used on suspension cars. On a slick some sense. I did make some serious ciated and Delta coming up with new track, I would try the soft grade, while 46 MODEL BUILDER Prototype rear end setup on an Associated RC500. Production pieces w ill be much neater.

v New electronic whiz-bang device from Delta is the Precision Discharger. See te x t fo r details.

really need is softer front tires, or harder in the back, but cranking in more throw can really mess things up. Don’t do it! To have a real “ Tire War,” there has to be New front end anti-roll another shot or two fired. We’ve just bar installation on the discussed Associated’s weapons.. . now Associated RC500. This it is Delta’s turn. While Associated has further improves the been arming its flank, Delta has been handling of the car. arming the other end of the car, trying to get more front bite. There are a couple of reasons for Delta's frontal assault: firstly, they have been very well satisfied with their AA, A, and B grades of rear rubber; secondly, the Eagle needs more tire in the front to turn with the RC500. It's not that Delta couldn’t offer sticky front tires, they have been cutting A (medium grade) and B (firm grade) rubber normally used for rear tires into rings sized for front tires ever since the Eagle was firm might be required on a really sticky who had this tuning tool available to released. The problem here is that A and track or for use in a long enduro where them. B rubber, when used on the front of the you might find yourself having to trade My first suggestion is to mount up at car tends to wear out very quickly . . . some bite for tire life. In any case, even least one set of each compound, and quickly enough to be considered the firm grade, I am told, offers better then try them in a meaningful test “ qualifiers” only. When you get to the grip than Associated’s number 2402 rear session. In other words, “ feel” isn’t main event, what do you do? rubber, although the 2402 is still without going to tell you much. Lay out a test In the past, a compromise tire has a doubt the best wearing. track, keep it fairly simple (for consis­ been used, originating with Tom Wong, For the many racers with pan cars, I tency), and believe only the stopwatch. it was simply a ring of A)’s (Twinn-K) would like to say that while the firm Be prepared to see some unusual results. number 738 molded on the outside and Green Dots will probably work better For instance, it would no longer an A or B ring on the inside. These work for you, the medium Yellow Dots can surprise me to switch from, say, Red okay. I have run many a race on them, work well on all but high-traction tracks. Dots (soft) to Yellow Dots (medium) and but they are a pain to make up, and still The soft Red Dots could easily cause the turn faster laps. If it wouldn't surprise don’t wear very well, even though they car to hop in the turns, a problem that you either, then you are already ahead are acceptable. can only be cured by using one or more of the story. For the other thousands of Which brings us (finally) to the recent of the following: (1) harder rear tires, (2) racers who assume "max bite” is the release of Delta’s 324 series of front tires driving a wider radius on the tight turns, best, you have been warned. in (yes, I fully realizethat you still haven’t (3) using less brake, or (4) lowering the Much more important than maximum sorted out Associated’s whatchamacallit car. However, this is just a guess on my traction at either end of the car is a “ dot” scheme) A, B, C, and D grades. part . . . experiment! balanced amount of traction which sees The A grade is the softest; it provides the This Red/Yellow/Green Dot scheme the car turning well into the corners, most steering, and can be expected to of things also applies in 1/12 scale. coming off the corners under control wear the fastest. D grade is at the other Locally, there has been a very quick (read witha littlepush),andstabledown end of the spectrum, the others are in switch over, with most of the faster the straights. If, at your track, the Red between . . . OK? racers running on the Yellow Dots and Dots give a bunch of rear bite, it is With the 324 tire series. Delta has, for getting a better “ bite” because of it. The doubtful that you will have front tireson the present at least, solved the problem Greenies might also be a hot tip, espe­ hand that will hold the car on line. It will of not enough front bite. I have been cially on the "semi-boinger” cars and/or be better to toss some rear grip to using the B compound on my Eagle, and slicker tracks; all I know is that Yellow is eliminate the push than to bang the this is great rubber. It has plenty of now regarded as the way to go. walls all day. Depending upon the track, steering (although I am anxious to try In either the 1/12 or 1/8 size tires, the Red Dots might even get so much the A compound as well) and all kinds of you can get them mounted and trued bite as the car turns into the corner that tire life. They do not wear as well as (on Associated wheels, of course) or as you will see the car hop sideways, a Associated’s molded fronts, but then, rubber donuts. The donuts are ready to situation which is very difficult to con­ hardly anything does. You will not find a glue to wheels, and there is no need to trol. Going to harder rear tires is one front tire that gives this much steering glue rings into donuts, which is real solution, and it can easily result in lower and wears even half as well. If you are handy. Now that Associated is offering lap times. racing a suspension car, you have to at graded rear rubber, many more racers Be really wary of using more steering least try these tires. You might even slip have a choice out back, where before it throw. If you already have plenty of was pretty much only Delta customers throw and the car won’t turn, what you Continued on page 85

DECEMBER 1983 47 • This month’s lead-in line is from the about improving the performance of pen of actress Lauren Bacall, and it’s a Jumbo, rubber-driven models, a com­ good reminder to us all. prehensive program for predicting SCUM model aircraft duration with the aid of a Lois Goff demonstrates the "Statue of Going from thesublimetotheabsurd, home computer, aero history by Adrian Liberty" Easy B launch technique at West Baden. This is only her second model . . . the Bill Stroman is forming a new scale Comper. of the firm which manufac­ first having been a Delta Dart. F. Scott pic. group to be known as the Southern tured such aircraft as the Comper Swift, California Ultimate Modelers club. The humor by “W. Summersuit Vaughn”, a that eliminates the majority of our idea is to provide a sort of west coast tongue-in-cheek scale presentation of entries! equivalent to the famous Flying Aces. the “ Hawker Humpback” , photos, and THE COLONEL SEZ There would be no dues, no newsletter; full-size model construction plans by Bob Thacker’s thesis of the month: "I only homemade trophies, but meets Mike Fineman, plus an article on the art know two things: my name, and that a would be held two or three times per of weathering, by Mike Midkiff. will not fly with an aft C.G.!” year. Bill puts it this way: "A ll the Flying At nine bucks per year, this news­ For reasons best known to himself, Aces contests are held back east, as the letter is a real bargain. Subscriptions are Colonel Bob refers to any sort of paint as air is so much heavier there, my models available from : FAC, 3301 Cindy Ln., “ oog” . His latest scale canard employs seem to stay on the low side as far as time Erie, PA 16506. regular latex house paint, which he in the air goes.” GOOD OLD DAYS PRICES points out is easily available in ANY Bill figures he may have better luck on R.F. “ Bo” Watson sent us vivid proof color, custom-mixed by the paint store home turf with his new organization, of how model supply prices have risen at verv low cost. Also, clean-up is with and suggests the motto; “ We always rise over the years: He enclosed a pre-WW- ordinary H2O! to the to p !” Which may seem appro­ II package of Comet “ Hy-Grade” tissue; COLLECTING MAGAZINES? priate for SCUM. Interested modelers two 20-1/2 by 24-inch sheets, offered in R.J. Twohy, of 24246 Crenshaw Blvd., may apply with a pre-addressed stamped a choice of white, black, red, yellow, Apt. 103, Torrance, CA 90505, specializes envelope to: Bill Stroman, 12218 Dune khaki, green, orange, light blue, and in used aviation magazines. Included are St.. Norwalk, CA 90650. dark blue. The price? Five cents! such titles as Aero Digest, Air Pictorial, AND SPEAKING OF FLYING ACES... WORDS OF WISDOM Air Progress, Popular Aviation, Air Trails, Their club newsletter, edited by Lin Larry Williams, on the subject of a Aeromodeller and Flying Aces. Why not Reichel, continues to excell. The current competition model: "It's gotta be ready send a pre-addressed, stamped en­ issue, for example, offers delightful at least a year in advance. If it’s not velope for the list and prices? cover art by Bob Rogers, information ready, don’t take it to a contest!” Guess ZACK WRITES BACK

Fritz Mueller likes rotorcraft! Shown are some of his rubber-driven The cockpit/fuselage of the 1906 VUIA, a full-size CO 2 powered giros and a helicopter. at the French Air Museum. Photo by Michel Benichou.

48 MODEL BUILDER Denis Fairlie, of England, constructed this charming Amalgam, loosely based on several US homebuilts of the Golden Age. R/C model has 3-channel radio, O.S. 15 power. The new Davis Diesel C02 conversion for the Evidently our readers do respond to aircraft and trains, was recently re­ Cox .020, eliminates glow plug, battery, and these mentions, as reported by author/ furbishing a Pacific Electric car con­ glow fuel. Provides one-flip starting. artist Zack Mosley, who says that the structed back during 1946. Its plastic Model Builder mention of his ‘‘Lil’ De­ windows were hazy and fogged, but pany, 19419 Ingram, Livonia, Ml 48152. icer” books brought letters and orders were installed in such a way as to make THOUGHT FOR THE DAY from “ all around the USA” . He also replacement very difficult. Ken’s solu­ From an unknown source, this most favored us with a copy of his auto­ tion? A smoothly brushed-on coat of appropriate reflection about model biography, Brave Coward Zack, which Krasel Industries M icro Coat Gloss, a flying: "If you do it right, it’s awfully gives the inside story on the creation of product intended for plastic models. simple — if you do it wrong, it’s simply the Smilin lack comic strip and its This thin, varnish-like liquid flows out aw ful!” characters, as well as Zack’s own remark­ evenly leaving the windows shiny new ROTOR ROOTER able life as a pilot and celebrity. and clear. Ken cautions against brushing Richard Howard, well-known scale First off, as we might have expected, back over, or adding a second coat of model builder, took part in the first Los Zack was a model builder during his the liquid, which may disturb the optical Angeles area air mail delivery flight via youth. The surprise to us was that for qualities. This idea should find equal helicopter, during 1947. He notes that many years he had a fear of flying. application to old model aircraft the price of an air mail stamp at the time Eventually, he went on to gain his license canopies and cabin windows. was only a nickel! Richard learned to fly and to accumulate some 3.000 hours at Ken’s second discovery concerns rotorcraft at Sheppard Field, Texas, the controls. He has owned nine air­ reference photographs. When one is during 1945, and we enjoyed reading the craft, some of which were employed in using photograph· prints (not magazine inscription on his diploma: patrol roles during WW-II. His circle of half-tones) for study, the detail is some­ Kollege of Kopter Knowledge friends reads like a “ Who's Who in times obscured by deep shadows. Some­ Be it known by these contents that Aviation”, and included Jimmy Doo­ times this information may be better 1st Lt. Richard Á. Howard having re­ little, Roscoe Turner, Hap Arnold, Briggs revealed by backlighting the photo­ mained motionless in space, flown Cunningham, Bill Lear, and William graph with a fluorescent lamp. With the forward, backward, sideward and ver­ Piper, of Cub fame. aid of a magnifying lens, a surprising tically, without serious consequences, is Among his cartoonist cronies were amount of additional detail may be awarded this certificate for successful Chester Gould (Dick Tracy), Frank King revealed. completion of the helicopter pilot (Gasoline Alley), M ilt Caniff (Terry and And finally, Ken has encountered training course and is duly acknowl­ the Pirates), Frank Willard (Moon another plastic model product which edged to be a genuine hoverbug. Mullins), Mike Branner (Winnie Winkle), may be equally useful for flying types. It VINTAGE AIRCRAFT COLORATION and Bill Holman (Smokey Stover). is an extremely thin, polished aluminum One of the most frustrating tasks During his lengthy career, Zack be­ foil, employed by model car builders to facing builders of scale models is obtain­ came involved in show business and simulate chrome on grills, hubcaps, etc. ing authentic color information, par­ even beauty contest judging. (Just doing Its thinness enables it to be burnished ticular for older machines. Recently, research for Smilin Jack’s Lil’ De-icers, down snugly, revealing the finest details Georges Chaulet was fortunate in inter­ he claims!). of the surface beneath. Details are viewing Jean Ordonneau, an elder The 103-page book is illustrated with available from: Bare-Metal Foil Com- French pilot and restorer, and we were photos as well as many examples of able to abstract the follow ing: ". .. I’ve Zack’s cartoon and aircraft artwork. never known white-painted planes. (If) Copies may be ordered directly from the there were some (of the 1907-14 period) author for $9.15 postpaid: Zack Mosley, they were by exception. P.O. Box 375, Stuart. FL 33495. “ The aeroplanes of the times were ail PAINTING PILOTS covered with top quality linen, well Now that dummy pilots have gained pulled. But the builders understood that almost total acceptance in model air­ it had to be tightened even more. They craft, many builders are trying to im­ first used some sort of collodion. Then prove their skills at finishing them. Joe the Dreyfus brothers released the Wagner passes on this tip for improving famous Avionine (dope) which was used realism: "I found out from a portrait on planes throughout the world. It was painter friend of mine how to avoid that clear (not colored), but sometimes ‘staring eyes' effect seen on so many slightly dyed in light yellow. I knew that model pilots. Just don’t paint the eye­ Caudron had used this dye. Thus, with balls white! Rather, paint them the same the approval of Charles Dollfus (former color as the flesh areas. When the irises curator of the Musse de Γ Air) I re­ and pupils are added, the eyes will look covered two of Vedrine’s planes with perfectly natural. I’ve tried it, and it Avionine slightly colored in yellow. I works.” Mireille Aime, of France, holds her husband never had any criticisms, even from old MORE HANDY HINTS Roger's Peanut Scale Epsilon. Photo by Roger Ken Hamilton, who models both A im e. Continued on page 93 DECEMBER 1983 49 This beautiful replica of a WW-I German By FERNANDO RAMOS Halberstadt was one of many interesting full-size aircraft at this year's EAA meet at Oshkosh. Note unique tail surfaces. OSHKOSH Yep! It's that time again . . . another trip to the fantasy land of Oshkosh! Oshkosh is the home of the Experimental Aircraft Association. Every year about 1500 airplanes and 800,000 or more people come to this most incredible gathering. This trip however, has a preamble, so to speak. Every year, for the last ten years or so, my wife and kids go to Yosemite with a bunch of her friends and their kids, the day after school lets out for summer vacation. They spend a week of blissful relaxation, while dear old dad sanding again, it was not ready for final soon! I had decided to use Dupont's decides that he would take this time to paint. How do you tell your wife after Dulux which is an automotive paint, paint his newly acquired '49 Bellanca she arrives that the airplane is still not figuring that it would last long enough Crusair. I figured that by the end of this painted? It’s kind of like hearing ... before I brought the Bellanca home to week, I would have a glisteningclassicat “ What have you been doing this whole completely restore. I had gone to the bay. past week?" paint store to pick out the red I wanted, Even though I spent twelve hours a As I had planned to take the Bellanca and after checking a few color charts, I day that week preparing for paint by to Oshkosh, it was obvious, at least to sanding, shooting primer, and more me, that I had to get it finished, and Con tinued on page 90

This Pfalz D-12 model was on display at the EAA museum in Another model in the EAA museum, this one is a red and silver Oshkosh ... as were many more. Whitman Bonzo racer.

Left and above: If big radial powered biplanes turn you on, you would have loved this Pitcarin bipe belonging to Steve Pitcarin, of Robbinsville, New Jersey. 50 MODEL BUILDER By WALT MOONEY .. . The Verville A ir Coach presented herewith is a two-for-one model . . . you can build either the Peanut size version (pages 52 and 53) or send $2.50 to Model Builder for the 26-inch, Free Flight Rubber Scale version. Either way, you'll enjoy the A ir Coach!

• In the January 1979 issue of M odel fuselage, and the vertical tail are black, holding the wheels on the model. Builder, Colonel Hurst Bower had a the bottom of the wing is vermillion. The The fuselage is started by making two three-view of the Verville Air Coach photos clearly show that the top of the fuselage side frames directly over the published. Because Mr. Alfred Verville wing and horizontal tail are lighter than plan. Use hard, one-sixteenth square was a friend of mine in his later years (we black. My suspicion is that the wings and balsa sticks for the longerons. This is became acquainted during the building horizontal tail were red, and the body pretty important because this fuselage is of a couple of replicas of the Curtiss A-1 and vertical tail were black. The spon- relatively large for this size structure. for the celebration of 50 years of naval sons are black and the struts are alumi­ While the sides are drying, start the aviation), this three-view of the Air num. The Verville logo is blue and white. wing structure. Strip several 3/32 width Coach was put aside to be converted The model is pretty much constructed sticks from 1/32 sheet. (Select hard balsa into a model. In early 1980, a drawing in the standard fashion foran airplaneof for these sticks.) Build the wing bottom was completed for a twice Peanut-size this vintage. Laminated wing tips and directly over the plan. Pin the leading rubber powered scale model of the Air surface outlines are used because they and trailing edge sticks down over the Coach. are strong and lightweight. Except for plan and cut the bottom of the ribs to Three years later the model structure the root ribs, all the ribs are of sliced length and cement them in place be­ was completed. About the same time, I construction. tween the leading and trailing edges. met Pete Glor at work at Convair and Balsawood wheels obtained from Old Slice the forward and rear spars from mentioned the project. A few weeks Timer models are also used. The engine 1/16th sheet. Note that the top of the later, he was sent on a business trip to cylinders are primarily Williams Brothers spar sticks should be beveled to match Washington, D.C. and set himself up to plastic pieces. The exhaust stack is a the top of the ribs. Cement the spars in get a short time at the research library in bendable plastic soda straw. The instru­ place. the Aero-Space Museum. While there, ment panel reproduction of the actual By this time, the fuselage side frames he got the project in a little trouble by diesel engine Air Coach panel, and was will be dry, even if you use Ambroid as I getting copies of data on the Air Coach. copied directly from the sales brochure do. Remove them from the plan and There was good news and bad news. As as was the vertical tail logo. By the way, with a thin, sharp blade, separate them Bill Hannan would say, “ Don’t trust that logo was also used on the wheel from each other. Now, assemble the two photographs either.” Nevertheless, hubs which stick out on the outside of Colonel Bower’s three-view was proved the wheels just like the soldered washers Continued on page 72 to be reasonably accurate, but the side- view did not represent the Detroit diesel Walt Mooney has done it again with another gorgeous F/F engine version, but one with another scale model of the Verville engine. The small three-view repro­ A ir Coach. This one is the duced on the drawing isColonel Bower's 26-inch rubber powered modified to more nearly match the version. It is a terrific flier! photos of the diesel powered version. You could say that the A ir Coach just begs to be built Even the articles obtained by Pete, as a lig h tw e ig h t F /F m odel. one of which was the original sales brochure, are a little questionable. For instance, it says that the color scheme was black and vermillion with aluminum painted struts. The top of the wing, the

DECEMBER 1983 51 52 Peanut Scale Peanut

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DECEMBER 1983 FULL-SIZE PLANS AVAILABLE - SEE PAGE 98 53 iA*iä'ä By BOB STALICK Josh Chamberlain admires his Simplex A-1 glider. This model, designed by the author, was featured as a 3-view in Model Builder in the December 1982 issue. Josh placed J iliIlL lž second in the USFFC at Taft, California, with this model. Way to go, Josh!

• As of the writing of this column (August), the results of the FAI Internats are not known . . . however, if the results become available before this issue goes to press, they will be printed (hopefully) in the magazine. Whatever the outcome at the inter­ national level, the FAI events appear to be generating some new blood here in the US. A recent list of qualifiers pub­ lished by the FAI committee shows over 20 new participants in the program. New blood is always a sign of life . .. and I think that the program appears to be showing some new life. It’s a good sign. Most encouraging is the improving This December F/F column will up­ Wasp was an ideal engine for a model of status of the Wakefield event. Undoubt­ date one FAI event gadget.. . the bunt this size. Later, as my youngest son, Tom, edly. the availability of competitive system . . . and feature one of the hottest wanted to get into free flight power, I rubber strip through F.A.I. Model Supply events on the free flight circuit today: helped him with his Wasp powered and the availability of the Champion Nostalgia gas. Read on! FuBar. The May 1974 issue of ‘‘Model Models Wakefield kit have helped. THREE-VIEW OF THE MONTH: Builder Free Flight" shows him, at nine Down a bit over recent year's atten­ THE FUBAR 36 years old, replacing a glow plug. (Now, dance is the A-2event. I’m puzzled over The FuBar has always been one of my 9-1/2 year later, Tom is six-foot, seven- this development somewhat, but as no favorite models. I built one from a inches tall, and is a student and a competitive kits are generally available, Midwest kit many years ago and flew it basketball player at the University of and circle towhook technology is still with an old Wasp equipped with an Idaho.) less than an open market item, perhaps Atwood Timer Tank. The whole thing The FuBar trimmed easily and flew this explains the downturn. weighed in at around 5-1/2 ounces. The well. The only problem with it was that blankety-blank pop-down DT system. The stab was pivoted at the rear and the Clarence Bull, a member DT line was strung through the fuselage of the Willamette Modelers from a remote fuse just under the center Club, launches his 1/2A C-Quell at the 1983 of gravity on my FuBars. The line was Northwest Free Flight attached to the leading edge of thestab. Championships. He eventu­ When the DT fuse burned through, the ally placed second. This leading edge of the stab popped down, m odel is a reduced size and the ship started on its way down. version of the C-Quell The one peculiar characteristic of the design (MB plan No. 11743, S5.00) which is FuBar that I recall was that you could also a Stalick plan. hear them detherma+ize. As the air pressure under the dethermalized stab built up, the stab would snap back up into the stab platform, and a distinctive "click” could be heard as the rubber bands pulled the stab back down again to the DT position. A dethermalized FuBar literally clicked itself back down to the ground. For Simon Blake, of Edmonton, Al­ berta, who recently wrote requesting more three-views of Nostalgia models, here is the FuBar. Alberta restrains engines in 1/2A

54 MODEL BUILDER DECEMBER MYSTERY MODEL

95136. Tell him “ Model Builder Free magazine, he w ill send you by return Ross Thompson won Novice Nostalgia with Flight” sent you. mail a free subscription to this here this 1/2A Spacer design powered by a Testors DECEMBER MYSTERY MODEL magazine . .. you gotta be the first with series 8000 1/2A engine. The combination is This nostalgia model is of the same the right answer, though. excellent, and the pow er is such th a t Ross vintage as the FuBar, but as I have never Lei’s gel up to dale on past Mystery would be a good competitor in AMA Gas with built one, I decided to feature it as the Model winners. this combination. Mystery Model for this month. In March, it was Al Kramer's "Celes- Nostalgia to sport types. The FuBar is Once upon a time, kits were available tian" that was first identified by Pete ideal for an old Wen Mac or a Cox 290. I for this ship. The original was intended Young, of Carden Grove. California. A think a Cox 020 might do the trick too. I to be powered by the Wasp or the letter came in from the designer (too know that a T.D. 049 has way too much Thermal Hopper. It had one of those late to win, Al) that should be of interest. power, as one of our club members names that should havemadesomeone’s "This sure looks like my design, the found out 10 years ago. list of oddball models. In fact, I con­ ‘Celestian’ of 7963. It then held Ί/2Α , A. I think that you may even be able to sidered building one once, but declined and C records in Senior Class, the C find an old Midwest FuBar kit hidden because I didn’t want to build a ship that record being 54 minutes and 50 seconds, away in some old hobby shop. It also had a name that reminded me of an set the last day of the Nats at Los Al. I'm came in a larger size for A or B engines. athletic supporter. in the real airplane world now. and own John Pond has full-size plans. Drop him If you know the name, and if you send and race the "Cobra" racing biplane. a line at 4269 Sakoyo Circle, San Jose, CA it to Bill Northrop at Model Builder Still fly some R/C now and then, and am

Joe Supercool's Bunt System. Photo No. 1. Joe Supercool's Bunt System. Photo No. 2.. Joe Supercool's Bunt System. Photo No. 3. This photo shows the system in the power or This photo shows the system in the bunt This photo shows the system in the glide posi­ launch position. Note stab's trailing edge is position. Note the stab's trailing edge is at a tion. Note the aluminum arm has moved back raised above the stab platform. Sketch on lower incidence angle than in the first photo. to remove the bunt and power arms out of page 56 shows arm details. Model transitions from vertical to horizontal. the way. Stab at highest incidence. DECEMBER 1983 55 Don Zipoy is a well-respected N.W. contest director, but is seldom seen with one of his own models in hand. Here he is caught in the act with his O&R powered Varsity. a model railroader. Believe it was in American Modeler (yes, luly/August 7963). You guys sure know how to make someone (eel their age." A l’s note was on San-Val Aircraft Parts letterhead. He says company was named alter " San-Valeers” , 74 years ago. Even though he spelled it incorrectly, " Ephurmus" instead of “Fphemeris”. Phil Hainer. Jr., of Kent. Washington was the winning identifier of the R. jess Krieser design in our April issue. Very appropriately, the April model fooled a lot of people . . . if only a little. Many called it Carl Goldberg's ''Viking''. Actually, it was designed by /ess. but with Carl's advice and encouragement, and it uses Carl's G-67OB airfoil It was in the luly/August 1964 American Modeler. Martin Schindler. Vienna, Virginia, was first to identify Armand Vasquez's " Pylon Buster’’ as the May Mystery Model. He also pointed out that the model appeared in Mechanix Illustrated For September, Bob Stalick kinda mark. not the date of arrival. And we also in the early '40s instead of the early '50s slipped up by repeating a previous have a handicap system that helps to as indicated by Bob Stalick. Mystery Model, Roger Lapp's " Foamee", balance the arrival of your subscription For june. Phil Oestricher, of Fort from the 7958 A ir Trails Model Annual. in various parts of the country. Worth. Texas, and Bill Haught, Cincin­ Don't remember who named Foamee DGA FOR DECEMBER: NACA 6407.5 nati, Ohio, cost us (wo subscriptions, as the first time around, hut (or September Previous issues of “ Model Builder they managed a tie in naming Stan Hill's '83, it was Bill Park, of Charolette, North Free Flight” have featured many of the “ Hammerhead", as originally published Carolina. NACA series of free flight airfoils. in September 7956 Flying Models. The October 1983 Mystery Model Generally, the 6409 has been touted as a In the July issue, it was Ted Enticknap's appeared in the August 7967 issue of good one for AMA power events and “ GooΤ', as published in a back issue of American Modeler. Design credit was occasionally used in FAI power. The 6406 Flying Models, that brought lots of shared by Howard Timlin and Craig is recommended for rubber models, correct answers. Tom Cope. Issaquah, Cusick. Lee Campbell. Campbell’s Cus­ especially Wakefield. Midway between Washington, happened to be ahead of tom Kits. Lake Worth. Florida, named it these two is the 6407.5. It uses the same the pack. correctly and firstly as the "Solar''. mean camber line as the other two, but And guess who was first in identifying All of the above mentioned winners may be better suited for those folks who Dave Whatsistrums " Auntie Freez'' have earned a one-year subscription to would like to use a sheeted structure Coupe in the August issued That's right, Model Builder. Remember, your an­ none other than Linde Dave himself! swers are timed according to the post­ Continued on page 56

DARNED GOOD AIRFOIL - NACA 6407.5

—

STATION 0 1.25 2.5 5 7 .5 10 15 20 25 30 40 50 60 70 80 90 100

UPPER 0 1.75 2.56 3.81 4.83 5.68 7.08 8.15 8.9 9.38 9.62 9.14 8.21 6.81 5 2.76 0.0 75

LOWER 0 -0.7 -0.83 -0.77 -0.57 0.3 0.66 0.89 1.41 1.87 2.37 2.52 2.48 2.21 1.69 0.92 0.0 75

56 MODEL BUILDER Your Indoor editor built these two early canard subjects. The model Flightmaster Bill Warner entered this Peanut homebuilt Contestor. on the left is an A.S.L. Valkyrie B racer, right is Valkyrie Type 1. Bill is a respected authority on scale and is a superior craftsman.

By KEN JOHNSON

INDOOR MODELS AND FINE ART “ Sculpture in the Park” show. This 28- Have you considered that these little artist exhibit ran through September 6, toy airplanes we build and fly could 1983. Clarence Mather competes with this Peanut possibly be works of art? I, for one, The microfilm models being flown P-39 Cobra 11 Thompson Trophy winner believe that they are. Some years ago, it around the world are surely the most (1946). Flights of 45 seconds are common. came to me that the ornithopters I was exotic form of art this artist has ever turning out were also fine art. These seen. The beauty and grace these air­ imagination run wild while creating a moving machines are ‘‘kinetic sculp­ borne snails put forth is without equal. new machine. ture.” Have any of you readers taken your WHAT IS BORON? In 1968, while living in Pittsburgh, models out of the realm of model Until recently, some of us thought that Pennsylvania, I entered my “ W ingfoot” aircraft and into the world of the arts? Boron was a brand of gasoline. Well, flapper in a local art competition. Need­ Your Indoor editor would like to know now an indoor product has come on the less to say, its acceptance and prizes in the circumstances and print pictures of scene which goes by the name of boron. that show elated me greatly. Later, I read your masterpieces. Boron filament is very light, stiff, and that a Manhattan Cabin indoor model My newest flapping, flying machine strong. It is produced in a continuous was sold while on exhibit in New York (number 138) was built expressly for an process by subjecting a .001 diameter City. It was the Yeloise (MB plan number art show in Burbank, California. The tungsten substrate to vapor-deposition 10772) which appeared on the cover of testing session yesterday proved the from boron trichloride and hydrogen Model Builder magazine (October 1977), sound aeronautical design as well as the gas. The resultant p ro du ct is a .004 and it brought a price of over $700.00 merit of the ornithopter as a creative filament which is tremendously strong. while at the Metropolitan Museum! artform. It’s really fun to let your The weight is very little different than More recently, your editor decided to go the art show route again and was given a month-long one man show at Los Angeles Mission College in San Fernando, California. The 25-ornithop- ter exhibit got several press write-ups and resulted in an offer to show in the

r»n = « :4 ’ BBEK IKED- HOSE B LOCKFPRQmCK IKEFERENCE^. The judging table at the Flightmasters Indoor Annual. Competition was keen at this outing . .. or should that be in-ing? Johnson photo.

DECEMBER 1983 57 An Easy B model cruises near the ceiling at an Indoor session in Winnipeg, Canada. Large propellers just chug along . .. Annual built and flown (well) by Bill Warner. Johnson photo. before. Prices are: $25.00 for 1000 feet, and 2000 In New York, the Columbia Indoor Boron filament has six and a half times feet for $40.00. Miniature Aircraft Society presented a the strength to weight ratioof aluminum Carbon fiber is also sold by MRL: 112 special plaque to Ron Williams this and six times the relative stiffness to ft. (6,000 strand tow) for $6.00. Micro­ summer. The award reads, "Presented to weight ratio of tool steel. This product film (slack and dry) is only $6.00 for a RON WILLIAMS with oursincereappre- has been called the strongest material four-ounce bottle, $10.00 for an eight- ciation for your untiring and devoted known. The .004 diameter boron fila­ ounce bottle and $19.00 for a 16-ounce efforts on behalf of all our members .. . ment is comparable in strength to about bottle. All prices include shipping costs C.I.M.A.S., )une 5, 1983.” Ron secured .020 diameter music wire. A 1000 foot and applicable sales tax. the use of the Columbia University spool of boron weighs only 0.2076 once. FLOP/FLOP STABS Rotunda flying site and acted as host and It cements well with all modelling glues. While at the previously mentioned even retriever of models from the The uses for this product for indoor Santa Ana blimp hangar session, I ap­ galleries. Ron wrote the indoor journal model airplanes are atill somewhat proach Clarence Mather of San Diego entitled, "Building and Flying Indoor unknown. In Indoor Scale and Peanut about the use of unbraced stabs. Most Model Airplanes.” (Incidentally, Lew models it can be used anywhere that mic models, some years ago, featured Gitlow informs me that this book is no additional strength is needed ... cap­ nichrome-braced tail planes. A vertical longer in print. So, if you have one, ping wing ribs, for instance. Cementing center post ran through the stab and the cherish it; if you find one for sale, buy boron along a wing spar will add only wire was strung to four tip positions it!) about five percent to the weight of the from this point. The result was a very stiff NEW YORK NEWS spar while making the spar 10 times surface in flight. The current thinking is At a recent New York meet, Easy B was stronger. that an unbraced, floppy stab makes won by Pete Andrews with a time of At a recent indoor flying session at the the aircraft fly better. It is a strange 13:58. Frank Haynes and Joe Nuszer blimp hanger, I noted that Bob Ran­ sight to see the model creeping along were second and third with 12:04 and dolph had even tried it as a fin outline on while the is oscillating up and 11:30. The new 35 cm mic event was a microfilm ship. The covering was down on its own. It looks as though it captured by Joe Nuszer with a time of cemented right to the boron. would fracture and collapse at any 10:27. Would you like to try some on your moment, but (alas) this does not happen. The Long Beach, New York site (a models? Write to Model Research RON WILLIAMS HONORED skating rink) may be torn down because Laboratories, 24693 Nympha, Mission Viejo, CA 92691; phone (714) 586-5779.

Unidentified flying Canadian releases an Easy B model in gymnasium during wintertime Indoor expert and San Diego scale modelling enthusiast, Mather, winds his PT-19 at flying session. Perfect pastime for idle R/Cers. the last California "nationals." Johnson photo.

58 MODEL BUILDER fOWEP ■ flM PEU STIC THREAD RUBBER, fat·"BAiSA N O i/E L CKBtcMaxi3. TB/S ELAPPER USES. CEMENT I SD TRAfUUD EDGE /ZAMEHKKK MMOEREJ

Canadian modeler, Jim Holland, winds the TDN7ÄEAX SAPPER motor in his indoor Peanut Stinson 125. SPAN2.'!-Π Ρ TO TIP Jim is also an R/C glider enthusiast. B e s t tim e - 5 S e c o n d s EOTErOPEN SLEEPE Drawn By AenJbtnsan BJRM UCM M K TKAVZL of the lack of money to maintain, heat, and man the facility. It would be a shame is $8.95, or you can get the book, the kit, are somewhat more difficult to trim. My to loose such a fine building as this a n d the catalog for $16.00, postpaid. four-inch flapper climbs to an eight-foot where more records were set than any Write to: Indoor Model Supply, Box C, altitude and makes three five-foot other indoor site in the country. We Garberville, CA 95440. Tell Lew that diameter circles. It resembles a gnat by hope they change their minds and save Model Builder sent you! this room. If you are in the area and wish Lew relates that he recently flew for Continued on page 9 7 to know the current status, call John three days at the Idaho University Kibbie Carbone, (516) 271-5548. Activity Center. This room has a ceiling LAKEHURST SESSIONS height of 144 feet and spans 400 feet The hanger at Lakehurst, New Jersey, from side to side. Lew feels that the was scheduled fo r flyin g sessions in building might be available each sum­ August and October. For info on future mer, and could also be a site for indoor dates call Dan Domina at (608) 488-2840. team trials and world championships, if NEW FROM I.M.S. West Baden is lost to modelling. Mr. Lew Gitlow has introduced a new AVAR M IN I-’THOPTER indoor kit. The Zippy Sport (a recrea­ Last column featured pictures of Tony tional vehicle) is one of the new “ Minia­ Avak’s little two-inch ornithopter, which ture Scale Aircraft Series” models from flew for five seconds. As the photos Indoor M odel Supply. The Zippy Sport show, the flapper had to be held with retails for $6.95 at your dealer. It it’s not tweezers while winding. Apparently, available there, send $6.95 plus $1.00 this model caught the fancy of many postage and handling to I.M.S. readers, as I’ve received several letters The new I.M.S. 16-page catalog has asking for further information and plans. lots of instructional information and So, I am presenting herewith a full-size illustrations. It is available for $1.50. The plan of the model. Zippy kit with the catalog is available for I can tell you that models of this tiny $8.00. Bill Hannan’s Peanut Power book size do not fly as long as larger craft, and

Lew Gitlow, of Indoor Model Supply, is now kitting this Peanut Stan Chilton and m icrofilm FAI model. Stan travelled from Kansas Zippy Sport homebuilt. to Texas to fly at the Bedford Boy s Ranch gym.

DECEMBER 1983 59 Control Line at the U.S. Nationals

By RICH VON LOPEZ . . . Control Line is alive and well at the U.S. Nationals. Combat, Speed, Carrier, Goodyear, Rat Racing, Scale, and Aerobatics were all flown and relatively well attended. Enjoy this mostly pictorial essay of one of the most diverse fields of modelling.

• There is no doubt in my mind that There were large groups of spectators the AMA Nationals is the best all-around asking questions. On Wednesday, a competition for model aircraft in the troop of kids from a camp invaded the world. There are so many things to do site and never let up their questions and and see that one week is not enough their clicking cameras. They even went time to take it all in. I have judged through the combat trash cans for Combat at all eight of the Nats I have souvenirs. attended, not full time, however, as I like As always, the competition was in­ to enter FAI and Fast Combat. This limits tense and fun to watch. If you have my time to get around and spectate. I never been to a Nats before, don’t miss did, however, manage to get around the Reno in 1984. We talked to John Crigg, control line circles to get a feel of the and apparently Philadelphia is out as the action. '84 World Championship site. Reno, the The site at Westover Air Force Base in week before the AMA Nationals, is a Chicopee, Massachusetts, was great. good possibility. That would make a Combat had plenty of grass turf, while great two-week vacation. · Carrier, Precision Aerobatics, Racing, Scale, and Speed had lots of level runway. There were plenty of food stands and roving beer and ice cream trucks. The Academy of Model Aero­ nautics headquarters was located at the Quality Inn, a pleasant departure from Above: Open Fast Combat winners: Phil Cartier the normal airbase hangar. That meant (1st), Don Hollbrook (pitman), and Gill Ready (2nd). Not much left of the models! that there was a lobby, lounge, pool and Left: Open Slow Combat winners Jim Gall (2nd) conference rooms right at hand. and Don Cranfill (1st) shake hands. I stayed at the Elms College dorms. Below left: Nice Avenger Carrier model. Elms is C atholic school fo r wom en. Below: These guys are as good as they come, O ’Leary Hall was very comfortable and they are: Pete Athans (Illinois), Steve Kott had an air of antiquity about it. The (Michigan), and Dick Tyndall (Virginia). grounds in front of O ’Leary Hall were large enough to permit the flying of rubber powered models. Some of the younger modelers flew them well into the night, every night. There were nightly bull sessions on the front steps. Yes, Sal Taibi did drive his 1956 Chevy all the way from Lakewood, California to this Nats. This is a long-standing tradi­ tion with Sal. There were unofficial gatherings that took place, such as Jed Kusik’s birthday party at the Ponderosa steak house. Jed won FAI Team Race. The Air Force was constantly flying their airplanes over the site, and on Saturday they put on an air show for us. There were paratrooper and cargo drops, low passes by tank-busting air­ craft, and maneuvering demos by .various aircraft.

60 MODEL BUILDER Control Line Scale models can be every bit Would you believe ducted fan for Control Line scale? Why not! Excellent workmanship, as nice as R /C . . . Mister Mulligan is p ro o f!

Jim Casales w on the Precision Aerobatic event (left). Here he is keeping his Spectrum free fro m fuel residue while answering questions from a bystander.

Father and son team of Gary Frost and Eric Parker (right) tune up their Combat m odel.

Left: The winners of Junior Slow Combat (left to right) Mike Wilcox (third), Eric Parker (first), and John Stubblefield (second).

Below: Control Line Scale PT-19.

y MODEL BUILDER 61 man, Bernhard! I know I’ve said it before, but I’ll say it again, that seven-cell Sanyo pack that comes with the Astro Sport XL makes it Tubing Tools the best bargain of the year! The price Cutter handles round for the whole outfit is lower than most brass, copper or alumi­ 05s on the market. It’s got to be Astro’s num tubing in sizes up way of enticing people into electrics! In to 5/8 O.D. A specially fact, the price for the motor, all the designed nylon body re­ duces grip friction to wiring, and the battery pack is just about make cutting easier. the same as the price for the seven-cell Cuts without crimping, Sanyo pack alone from other sources. too. Tubing benders Mine delivers more power than any handles tubes up to other pack I have. 3/1 6 O.D. V-block clamp Anyhow, Bernhard loves his Show- i-t 4' y ' . y holds securely for cut­ master, and it is fun to watch him as he ting, drilling, filing, etc. flies with a big smile on his face, with a Send 25 cents for our loop here, a there, a ; a price list and tubing, wonderful way to speed an afternoon or shapes, wire and tool catalog. K & S Engineer­ evening! ing, 6917 W. 59th St., A few months back, Model Builder Chicago, Illinois 60638. had a construction article for the Telephone: 312/586- "Pleaser” by Stan Wilson. Among the 8503. other fine features of this sport R/C plane, Stan included a wiring diagram for high or low power using an R/C switchable series or parallel circuit for the motor batteries. By a coincidence, I too had been using a series/parallel some electrics featured. Larry Bedford setup, and had sent in a wiring diagram flew his Playboy, there were electric to Kalmbach for my electric book (which E lectric...... Continued from page 15 pylon racers, Bernhard Cawley flew his will be out in June of '84 . . . such a long 140% Showmaster, and I flew my Aqua time away!). That diagram showed a few as I would like. They are much better Sport. I landed the Sport on grass (it was more details than Stan’s (his is easy to than Polaroids, and on par with Insta- equipped with floats), which worked understand, but did not show the motor matics, but isn’t there a 35 mm camera out all right till the last flight, when I and batteries), so I’ll include it here. that might work? goofed it and came in too fast. The floats Those that have tried series/parallel In fact, there is, the Canon “ Snappy” went one way, the plane another! The have found that it makes an excellent cameras, they are motor driven, use grass was dry, if you land on floats in alternative to a speed control. The 35 mm color print film, and are inexpen­ grass, I recommend wet grass! parallel gives an excellent “ half-throttle” sive and light. The "Snappy 20” is adver­ Bernhard and Leonard flew together, (actually, more like one-third throttle) tised at $69, the "Snappy 50” at $89.1 see the Showmaster and the Playboy make a and long duration. I have used it on both in Popular Photography that the Snappy good combination. The Playboy climbs my 05 and 15 seaplanes, and it has been 20 is often discounted to $59.95, so you faster, but the Showmaster excels at slow so effective that it has seriously delayed can save some money. speed aerobatics. my use of electronic ! Both the 50 and the 20 accept only Bernhard scaled up the Showmaster There is one drawback, however, and ASA 100 or 400 film, that is, they are (Ken Willard design, plans from RCM) that is it takes more wiring, and you can really not set up for slide film. The 140%, to get four square feet of wing only use even numbered packs (parallel reason for this is that they have a fixed area, with a 42-ounce all up weight. He with a seven-cell pack will not work!). aperture (like a box camera) so the film uses Bantam Midget servos for elevator The benefit is that it is very reliable. The has to have quite a lot of latitude, and as and rudder, and a Jomar electronic low throttle is just enough to keep a a print can be adjusted in the lab, and a throttle for speed control. His receiver is powered glider in the air. In my heavily slide cannot, print film was the way to the Royal 1/2A receiver using a 250 mah loaded seaplanes it gives a gentle de­ go- receiver battery. scent, excellent for setting up landings The Snappy 50 has adjustable focus, The plane has been flown on both the or touch and goes. the 20 does not. As all the shots would be Astro 05 XL Sport system (seven-cell) and If, on the other hand, you prefer elec­ focused at infinity anyway, the 20should the Leisure LT 50 pattern wind on seven tronic throttles, Bernhard is very im­ do just as well as the 50. cells (Sanyo). A Rev-Up 11x7-1/2 gives pressed and pleased with his Jomar Both cameras weigh 11 ounces, which 4300 rpm with the Astro and 4500 with throttle, and I have used and currently should be fine even for most 05 motor the Leisure on an Astro belt drive. The like the Astro Flight electronic throttle. gliders. It would be nothing at all for an climb is better with the Leisure, but both Till next time, fly high, and take a few Astro 15 type plane. fly the plane quite well. Bernhard can pictures ... electrically! · There is, by the way, an excellent get 20-minute flights if he goes for review of these and other pocket 35 mm altitude, but he generally flies lower for cameras in the August '83 issue of Con­ aerobatics, which gives 12 to 15 minutes. Plug Sparks .. Continued from page 41 sumer Reports. So, how about some The photos show Bernhard’s installa­ electric aerial photography! Larry has tion, which is very clean and accessible. nuisance due to cowling problems. proved that it works well, and the The Jomar throttle goes in the nose, with Many a good engine succumbed to this cameras are available. I may try it myself an aluminum plate for a heat sink. This is so-called bugaboo. (project number 1001!). part of the floor of the nose, so outside This was truly a shame as the preceding I just happened to think of another air flows past it for cooling. D & S engines scored impressive wins at plane that would be absolutely ideal for The seven-cell Sanyo pack is mounted the 1940 C hicago N ationals and the aerial photography, the Leisure Playboy. very simply in two balsa cradles that are Scripps Howard Races at Akron. Some­ It flies slowly, climbs quickly, and would accessible from a hatch in the cabin where along the line, the engine was be easy to position. floor. The batteries are rubber banded passed up by the Delong, Torpedo, and The Boeing Hawks recently had an in, great for shock mounting and for McCoy. The competition for national R/C show for the public, and there were easy in and out. Note the fuse .. . good recognition was something fierce! 62 MODEL BUILDER The Steele R.B. Special as a .299 cu. in. 1 members. They also acted as judges to displacement engine featuring sandcast verify the authenticity of models located INDOOR MODEL SUPPLY aluminum parts. This 29 was one of the in the big army surplus tent serving as ENDURANCE RUBBER MODELS THE EASY B” 3 IMS G liden 1 r Sor first engines of that size to feature ball the free flight headquarters. This is Wo i 14.95 bearings. With an all-up weight of 8.75 something that is not always done, and ounces, this made for an excellent such action should be applauded. I power to weight ratio. Credit should be given to Jim Thomas To spur sales, Steele also produced a and Jim Whelan for the precontest Class C version of .362 cu. in. displace­ decision of three-minute max flights. ment known as the Steele RB-C, still on There was a lake located about a mile I ignition. With glow plug operation be­ and a half downwind that would only coming so popular, the last gasp of this require a five-minute flight for the F/F company was its production of an RB models to drift over its wet welcome. Special in 1950 without a timer for glow The wind did shift on the last day to its THE SLOWPOKE Soa* ie plug running. However, the price and normal direction which made the lack of attendant National publicity (so models much easier to retrieve. coveted by the other manufacturers), Those fellows expecting to chase f S2 P a**Y * J 4 .9 5 the engine was relegated to the true title models on their motor bikes received a Plastic Pro© of “ special" as very few were produced rude awakening as the buffalo grass THE TIME MACHINE PENNY thereafter. grew only in clumps. These clumps 2 Yard Birds 12” 1« OZ Λ PLANE i t ’ S p a * 1 ANNUAL SAM BUSINESS MEETING spaced out in random fashion made for Plastic pop I.? Λ _ _ The meeting, directed by President an extremely bumpy ride. For this U* Mike Granieri, did not accomplish too reason, retrieving was accomplished much new, but it did provide a lively mostly on foot, and on the last day, by sounding board for those members automobile. wishing to express new ideas or sugges­ The R/C Assist boys also received a tions on running the SAM Champs. rude awakening when trying to land Highlights of the meeting were: their models in this rough terrain. Many v “ " ” 1) The announcement made by the a bent landing gear or broken firewall 13” MINIATURE SCALE AIRCRAFT KITS ea $6.95 OUTSTANDING DETAILS. 3-VIEWS & HISTORY secretary-treasurer indicating that the resulted from these unfortunate colli­ .045” Strip Wood. Light Sheet. Hardware & Prop. SAM treasury had better than $13,000on sions. However, Thomas & Co. had the Heat Transfers. Japanese Tissue PLASTIC CYLINDERS in ALCO and HEATH hand. foresight to have paved areas laid down ALCO SPORT 1929 ZIPPY SPORT A.R.V. WATERMAN RACER 1921 HEATH PARASOL 1928 2) There was an exhibit of a new com­ to assist the models of both types to AERONCA K 1937 Span 16” Length 9" puter printout of the membership list takeoff. The runways originally prom­ INDOOR MODEL AIRPLANES by Lew Gitlow developed by Richard Williams for SAM. ised were unfortunately not available as 48 pgs. 100 illust. (reprint) + FREE PLAN. . $3.95 PEANUT POWER by Hannan. 80 pgs $8.95 3) The announcement made by the airport operators exercised their INDOOR BALSA PACK $6.95 P NUT PACK $6.95 Woody Woodman that the new R/C prerogative to open the runways at any­ JAPANESE TISSUE 10 Ige 5 col. roll...... $5.95 Assist rules passed, and would become time. This was a bad situation for the free CONDENSER PAPER 2/$2.50 MICROLITE $3.25 RUBBER LUBE $1.50 BALSA CEMENT $1.50 effective January 1, 1984. flighters. THRUST BEARINGS. Mini Dual or Dual...... $1.00 4) The recommendation that the R/C This writer thought the SAM 1 boys PIRELLI RUBBER .020 to .090" & 125 $2 35 Assist portion of the SAM Champs be ex­ did an excellent job of providing a dirt 6:1 WINDER $3.95 16:1 MARK 1 $11.95 P-NUT CO-2 ENGINE $34.95 CHARGER $8 95 tended to four days was approved. Free access road (which was periodically P-NUT PROP PACK 4 props, shafts, w.&p. $2.95 Flight is to remain as it is. watered) and areas for plenty of tents, SCALE CYLINDERS 5 pack. 3/8 & 1/2” ...... $1.00 5) The contest manager/host club even the barbed wire fence was modi­ I.M.S. P-NUT PLANS ALL 5. 10 sheets $15.00 of the Champs will be permitted to fied with gates for the modelers to pass ADD 10% POSTAGE— MINIMUM POSTAGE $1.50 1983-4 CATALOG 18 ILLUST. PGS. $1.50 determine the SAM Champs dates in through for those errant models which order to avoid the heat problem noted responded to the shifting winds. BOX C, GARBERVILLE, CA 95440 by Contest Manager Jim Thomas at this R/C Assist Contest Director Woody year’s SAM Champs. Woodman put on an excellent meet ugly gash in the fuselage. ‘Bo’ had only 6) A resolution was passed to recog­ assisted by his wife, Evelyn, and the one request, fix it up for one more flight nize all modelers who have passed on Granieris, Dorothy and Mike. SAM 1 in the Texaco event. during the time between SAM Champs. also provided assistance at the impound “ Most of us had been to the room of Their names w ill be read at the SAM area and the weigh in tables. Things ran Bill and Dick Huang previously, and banquet and properly toasted. really smoothly at this table! observed that they had transported 7) It was approved for the 1984 SAM In spite of oppressive weather and almost all of the equipment and tools Champs to be held at Toledo or some other drawbacks, Jim Lobb of SAM 29 from Dick’s well-stocked home work­ other suitable location in the Midwest had the right idea .. . enjoy yourself! His shop. To our amazement, none of the area. writeup in the “ Planesman” entitled, fifty or so boxes contained the required THE CONTEST “ Memorable Moments,” was most hi­ ’damage control equipm ent’ needed for Surely by now you have gotten the larious, hence, we cannot resist lifting repairs. After several scrounging mis­ idea that it was hot at this meet. Temper­ the major portion of his report: sions by the attending Planesmen which atures ran better than 105 degrees Fahr­ “There were many good times!! I produced Monokote,sealing iron.balsa, enheit for the first two days with the loved the evening that Bruce Norman, epoxy, and a vagrant free flight consul­ third day seeing a slight drop to 100 Joe Percy, Jack Swain, and I accompa­ tant named Sal Taibi. ‘Doctor’ Huang degrees. nied “ Bo” Buice to Huang Headquarters was able to proceed. With heat like that, thermals were (room) for resurrection surgery. Doctor “ The experience of witnessing the good but spotty, much like the flying at Huang was in, so the patient (Cumulus) witty and brilliant rapid-fire suggestions Taft . . . complete with dust devils. One was placed on the cleanly scrubbed (bordering on the chaotic?) by the could expect a lull in the wind, the table. At this point Doctor Huang tried Planesmen in attendance was more than build-up of temperature, and then the for a coroner’s cop-out pronouncing Taibi could endure. He took leave be­ wind with its good thermals. the subject D.O.A. Despite this, the fore his reservoir of knowledge could be The contest was expertly run. The free Planesman persisted, and insisted on tapped. flight portion was an eye opener as all their Resuscitative Insistence'. ’Doctor' "Eventually, the operation was a suc­ models were weighed and processed at Huang capitulated (caved-in). cess. The ’Doctor’ had the Cumulus the central tent. In addition, Contest "Prognosisshowed the La Juntaprairie looking like an aged shark who had just Director Jim Whelan had the assistance had amputated the landing gear in a taken a bite out of a whirling lawn of a rules committee comprised of SAM wrenching fashion which left a large mower blade. The wound had received

DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU! 63 Taibi and Bruno Markiewicz who tied Eliminates GLITCH problems associated with long servo leads. with eleven points each. Bruno finally said, "Sal, you take the trophy.” Eliminates need for voltage robbing chokes and other devices with Wouldn’t you know it, the Grand leads over 15" long Champion for R/C Assist trophy had A Modern CMOS IC technology Don Bekins and Dick Huang in a dead Uses less than 0.5 milliamps at 4.8 volts heat for points. This was finally resolved STOP Power lines are capacitor filtered by reviewing the events to see how Available in 4 versions with connector installed: many were entered in each event and re­ .95- Single Channel, single servo drive (Single) GS- summarizing the points based on the 95- Single Channel, two servo drive (Wye) GS-1Y number of entries. Don Bekins was S 14.95- Two Channel, two independent servo drive (Twin) GS-2 awarded the big trophy. EMS S17.95 - Two Channel, two servos per channel drive (Twin Wye) GS-2Y It might be wise at this point to note ______IklCTMOoC MOOCi · Overall lead length is approximately 6“ to 8” that points can only be garnered from • ■ · Modeler must furnish own longer extensions as required.______the "basic events” as outlined in the S D e e ifv R a d io 51.00 Shipping and Handling on Pre-Paid orders, add SAM rule book. Unofficial events such μ ’ 6% for California residents. Mastercharge and Visa as Gas Scale, T ow line G lid e r, Twin 6175 PALO ALTO DR., ANAHEIM, CALIF. 92807 (714) 637-2161 Pusher, etc., do not add to the overall point total. So plan accordingly next year, fellows! a hastily applied cellophane band-aid to "Watching those free flight models The piece d’resistance of this whole tide the model over. In that respect, Joe ROG and then buzz the flight lines . . . affair is the annual SAM Champs Ban­ Percy is a master at cosmetic surgery. really exciting to watch so many people quet. This is the vehicle whereby we “ Most of the consultants present felt scramble! recognize all those people who have that Doctor' Huang could have done a "Swearing off models and then made this contest possible, the awarding more professional job if Jack Swain had making a pact with Jack Swain to not of the trophies, special awards, and not been rolling on the floor suffering build any more planes for the next year. plaques for the unselfish efforts of all the from violent attacks of laughter. Diag­ On the way home, planning like mad for SAM officials. nosis: orange Gater-Ade aftereffects. the best kind for next year!! The banquet was excellent, a tribute “ The next day, 'Bo' Buice was back in "Scrounging all over town for Gator- to the planning of Jim Thomas. This the hunt, snaggle tooth Cumulus and all. Ade only to find that Percy had bought it contest manager missed no bets as he Sounds crazy? Well it really happened at all up. had the entire staff of the mayor of La the SAM Champs!” “ The excitement on the flight pad Junta at the head table and introduced Jim Lobb goes on to report (in his when the wind got under Dick Huang’s them accordingly. Jim proved to be Texan commentary) the following high­ scale Cumulus, and when it was being more than effective as a master of lights: wrestled by Bill Huang who was forced ceremonies keeping things rolling. “ Loss of three planes by Joe Percy. Joe to back up under the beast’s attack. Dick Despite the fact that Mike Granieri had a still hung in there and brought home yanked the off trying to help sore throat (hollering for the contes­ three trophies. Bill stave off the monster. tants again, Mike?), the president was “ Loss of Jim Lobb’s Class A glow. Class “ Being a part of one of the largest able to award plaques commemorating B/C Playboys, plus two radio failures. SAM Champs and looking forward to the work of the unselfish people of "Bruce Norman’s comment to Swain next year. The Planesmen will again give SAM. These included awards to all of the and Lobb as the rear doors of Lobb’s van a good account of themselves.” elected SAM officials, plus awards to were opened to unload the models (13) Columnist note: Thanks to Jim Lobb R/C Assist Rules Chairmen Bekins and at the dormitory. 'Now I know what the and the Planesmen for sharing some of Huang, plus one for Jim Adams, "SAM inside of a whale looks like.’ those "Memorable Moments” with the Speaks” newsletter editor, and finally "Hearing the thundering crash caused rest of us. to Jim Thomas and his boys. by the wind picking up Joe Percy’s trailer To show you how tough it was to win While on the subject of awards, Mitch top (weighing over 100 lbs, with four by against such an excellent caliber of com­ Post pulled a fast one on this writer by ten-foot measurement) and depositing it petition, a special fly-off had to be presenting the Free Flight Hall of Fame over the hood of his car and into his conducted for the R/C Texaco event Award to him for work done on behalf windshield. with five fellows all making the 30- of free flight and old timer activity. “ The luxury of sharing the shade pro­ minute max allowed. Of course, in a Probably the most hilarious thing that vided by Dick and Ken M illet. pressure packed situation like this, Don occurred at the trophy presentations "Sal Taibi’s account of his trek through Bekins is at his best, and won quite was the awarding of the Texas Trophy to the La Junta prairie and vain search for handily. It was this win, incidentally, that Don Bekins by Chet Lanzo. Upon calling the one that got away. helped him win overall sweepstakes. Don Bekins to the floor, he then an­ "The simply super help given to all Before forgetting all the action, the nounced there was a special cash awartd SAM 29 modelers by Nancy Buice and Twin Pusher event (where everyone for anyone winning the Texaco event Leslie Norman. Also, to Clarence Percy launches his model at the same time) with a Lanzo design. (Joe's brother) for the many assists and saw at least a dozen planes fly off at 8:00 Upon asking Don what kind of model encouragements. a.m. It was rather fitting that SAM 1 he had won with, the audience enjoyed "Tom Dennard’s appearance at our member Larrie Schaeffer should win a good laugh, well-knowing that Don tent moaningabout how hot it was while . . . he won with the best climbing twin had won with a Carl Goldberg design. wearing a fleece lined jacket in 100 pusher on the field! After hearing this pronouncement, Chet degree weather. Another special feature, the Com­ Lanzo then said, "W ell, better luck next "The narrow point spread in total pressed Air event as sponsored by Tim time. Here’s a buck for your trouble." points between Dick Huang and Don Banaszak, saw a newcomer to the event. This brought the house down. Be kins. Tom McCoy, win. Tom used a model What else can you say. these were only ‘‘The many hand launches by Bill resembling in many ways, a semi-scale the sketchy highlights of the fun that Huang for all of us. (Hand launching was Curtiss Robin. Good to see a realistic went on for four days. The only advice allowed here.) model win! this writer has for the reader who didn’t “ The monstrous Comet Clipper flown In reviewing the results, there was attend is don’t miss next year's champs! by John Pond. more than a good amount of excellent Well, you have been waiting long “ The pleasure of meeting so many flying and close competition. The Grand enough for the results, here they are: celebrated flyers, but most notably Chet Champion for Free Flight trophy had to R/C ASSIST RESULTS Lanzo and Sal Taibi. be decided by mutual agreement of Sal EVERETT W OODMAN, CD

64 MODEL BUILDER CLASS C IGNITION CLASS A IGNITION 1. Ross Thomas 1. Joe Percy Sunduster/McCoy 60...... 1188 Kerswap/McCoy 19 ...... 1029 POWER TO SOAR 2. Joe Percy 2. Don Bekins Theoradical/Ohlsson 6 0 ...... 1165 Alert/Bantam ...... 667 TO NEW HEIGHTS 3. Jack Swain 3. Jack Swain Playboy/Orwick 64 ...... 1110 Kerswap/McCoy 19 ...... 659 4. Chet Lanzo 4. J. Lange Lanzo Bomber/O&R 60...... 1106 Interceptor/OS 20 ...... 221 5. Jim Kyncy 5. Richard Huang Anderson Pylon/Hornet...... 1082 Playboy/McCoy 19...... 191 CLASS A GLOW 1/2A TEXACO 1. Richard Huang 1. Jim Kyncy Playboy Sr./K&B 3.25...... 1017 Interceptor ...... 1292 LEISURE LT50 2. Bruce Norman 2. Bill Barton Challenger/K&B 3.25 ...... 616 Challenger ...... 1290 0.10 cu. in equivalent glow engine dis­ 3. Robert M illet 3. Roger Barton placement. For two-meter sailplanes, or spon scale aircraft. Lanzo Stick/K&B 3.25 ...... 591 Bombshell ...... 1259 4. Loren Schmidt 4. Tad Sato Ranger/K&B 15 ...... 581 Mike ...... 1205 5. Ross Thomas 5. Bob Angus Playboy Sr./K&B 19 ...... 564 Eastern States ...... 1121 CLASS C GLOW TEXACO (all times plus 30 minutes) 1. J. Reynolds FIVE-MAN FLYOFF Playboy Sr./S.T. 35 ...... 940 1. Don Bekins 2. Ralph Turner Gas Bird/OS604C...... 621 KELLER 25 M-G/K&B 40 ...... 903 2. Rich Williams 0.24 cu. in. equivalent glow engine dis­ 3. Richard Huang Flamingo/OS604C ...... 481 placement. Flies any .19 to .24 powered Playboy Sr./K&B 3.8 ...... 824 3. Jim Kyncy plane For 100-inch sailplanes, and sport 4. Roger LaPrelle Anderson Pylon/OS604C...... 400 scale aircraft. Manufactured for Leisure hy Buzzard Bombshell/ST 35 ...... 745 4. G. Martin Keller Motoren of West Germany. 5. Buzz Averill Dallaire/SuperCyke ...... 351 Playboy Cabin/ST 3 5 ...... 710 5. Joe Percy ANTIQUE GLOW Dallaire/OS604C ...... 187 1. Bruce Norman ELECTRIC Cumulus/Rossi 60 ...... 1800 1. Don Bekins ...... Playboy Sr. 2. J. Reynolds 2. Dick Huang ...... Playboy Turner Special/K&B 6.5...... 1639 3. Bill Burleson ...... Playboy 3. Robert Millet 4. Ross Thom as...... Playboy Cabin KELLER 5 0 /2-» Lanzo Stick/OS 60 ...... 1635 5. Loren Schmidt ...... Playboy 0.36 cu, in. equivalent glow engine dis­ 4. Richard Huang SWEEPSTAKES R/C ASSIST TROPHY placement. The standard hy vv hich all other Cumulus/OS 61 ...... 1373 Awarded to Don Bekins over electric motors are compared. Only 0.36 5. Jim Kyncy Dick Huang (tie). cu in. equivalent glow displacement, but Dallaire/Rossi 60 ...... 1210 pulls like a .50! For F.3E competition “ TRUE” ANTIQUE FREE FLIGHT sailplanes, or .-tO-size pattern scale planes 1. Otto Bernhardt JIM WHELAN, CD Lanzo Rec. Brkr./McCoy 6 0 .... 1480 30 SECOND ANTIQUE 2. Tom McCoy 1. M itch Post Discover exciting electric flight Lanzo Bomber/Super Cyke ... .1190 Anderson/Spitfire ...... 540 for yourself. Send a self-addressed, 3. Bob Angel 2. Tom Alden stamped envelope for our latest Dallaire/McCoy 60...... 1107 Flying M idget/O R 19 ...... 407 catalog and technical bulletins. 4. Don Bekins 3. Fred Emmert V alkyrie /H orne t...... 1092 Anderson/Forster 99 ...... 403 5. Ross Thomas 4. Al Heilman Lanzo Bomber/O&R 60...... 1039 Clipper/Bunch 45 ...... 384 Leisure CLASS B IGNITION 5. Ted Bieber I I Deerspring Irvine California V2"I-i 1. Bruce Norman Clipper/Madwell 49...... 334 Kerswap/Torp 29 ...... 990 CLASS A CABIN 2. Don Bekins 1. Jim Walston Play boy /Torp 29 ...... 875 Cabruler/Arden 19 ...... 540 5. Tom Keppler 3. Ray VandeWalker 2. Bill Hale Huguelet ...... 177 Miss Philly/O&R 2 3 ...... 819 So Long/OR 19 ...... 535 RUBBER SCALE 4. Jack Swain 3. Bob Edelstein 1. Joseph Macay Playboy/O&R 29 ...... 765 So Long/Arden 1 9 ...... 402 Curtiss S 0 3 C ...... 127 5. C. Brannon 4. Larry Clark 2. Joseph Bortnak Playboy/K&B 29 ...... 711 Westwind/OR 19 ...... 382 General Skyfarer...... 89 CLASS B GLOW 5. Les Payne 3. Ken Hinton 1. Richard Huang Cabruler/Arden 19...... 370 Caudron 1911 ...... 86 Playboy/KB 4 .9 ...... 915 HAND LAUNCHED GLIDER 4. Jim O ’Reilly 2. Bo Buice 1. John Bortnak Interstate Cadet ...... 32 Playboy/KB 4 .9 ...... 859 Zoomer ...... 435 5. Larrie Schaeffer 3. Don Bekins 2. Peter Mann Interstate Cadet ...... 13 Playboy Cabin/KB 29...... 795 Hervat ...... 260 COMPRESSED AIR 4. Roger Barton 3. Blake Oliver 1. Thomas McCoy Playboy/KB 4 .9 ...... 554 Huguelet ...... 222 Kingburd/Whirlwind ...... 94 5. Buzz Averill 4. Meredith Chamberlain 2. Tim Banaszak Clipper, Mk l/ST 29...... 535 Hervat ...... 201 Drone/Whirlwind ...... 57

DECEMBER 1983 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 65 For information send $3.00 to TECHNOPOWER II Inc. 610 North Street, Chagrin Falls, OH 44022

NO TIME TO BUILD? 3. Jack Sheehan 4. Dave Ramsey TRY OUR OLD TIME” F/F-R/C AIRCRAFT Ranger/Arden 1 9 ...... 436 Alert/K&B 32 ...... 456 FULLY ASSEMBLED COMPONENTS 4. Bill Hale 5. Bruce Norman “OOUD KING” Kerswap/Arden 19 ...... 433 Zipper/Cyke ...... 449 5. Joe Beshar Fox/Bantam 19 ...... 403 CLASS B PYLON FUEL ALLOTMENT ANTIQUE 1. M itch Post 1. Sal Taibi Zipper/Torp 29 ...... 540 Powerhouse/Forster 99 ...... 604 2. Larry Clark 2. )im Coffin Foo-2-U/OS 25 ...... 470 Scram/Cyke ...... 502 3. Bill Jordan IDEAL FOR BEGINNERS & EXPERTS 3. Woody Bartelt Zipper/M cCoy 29...... 456 72- Span — 29 to 40 Engine Size (Less Wheels) 4. Bob Edelstein 2-3 Channel Operation, or F/F Powerhouse/Spitfire...... 362 Quality Built Components ol Balsa. Spruce & Ply 4. Bud Warren Ranger/OR 23 ...... 455 Formed Spring Steel Landing Gear/Tati Wheel Assombly. 5. Merle Shammo FULLY FRAMED - UNCOVERED S 149.95 Buccaneer/Cyke ...... 241 Ado $8 00 Sh«pin<|/HjMV*M>e NEW! NOW IN KIT FORM WITH .020 REPLICA Zipper/Forster 29 ...... 454 FUSELAGE SIDES PRE BUILT $89.95 Thtt it · »ud kit · All component» p'm u i 1. Bob Edelstein RUBBER STICK Add S3 OO SMpping/HandUno 1. )oe McCay An Λ/c snapped U P S Hof UTAH RESlOeNTS Aerbo ...... 360 BEEHIVE R'C MODEL AIRCRAFT CO AOO S% SALES TAX BOX 744. LAYTON. UT 44041 Deetør Inautnes muted 2. Larrie Schaeffer Cassano ...... 540+ Strato-Streak ...... 360 2. Sandra Chapman 3. Karl Spielmaker Cassano ...... 540+ Original/Whirlwind .16 Strato-Streak ...... 348 3. Ed Konefes CLASS B CABIN 4. Tom Alden Lanzo Stick ...... 1. R.L. Schellenbatim Twin Cyclone ...... 322 4. John Bortnak 508 460 5. Bill Baker M ulvihill ...... 2. Larry Clark Strato-Streak ...... 318 5. Sal Taibi Air Chief/OR 23 450 RUBBER CABIN Lanzo Stick ...... 3. James Robinson 1. Tom Alden CAS SCALE Dodger/OR 23 . 430 1936 Canadian...... 995 1. |im Adams 4. Les Payne 2. Bill Baker Fokker D 8...... Rockeleer/KB 29 428 Dethermalizer ...... 720 2. Sal Taibi 5. Woody Bartelt 3. James Taylor Corben Super Ace ...... 528 So Long/OR 23 413 Korda ...... 466 3. Larrie Schaeffer CLASS C CABIN 4. Jim O ’Reilly Piper Cub ...... 1. Sal Taibi Eugene II ...... 360 4. Bill Hale 574 5. James Macay Interstate ...... 2. Bruno Markiewicz California Champ...... 320 5. Ray Black 505 TWIN PUSHER longster ...... 3. Ed Konefes 1. Larrie Schaeffer ...... LMD TOWLINE GLIDER Bombshell/! 444 JIMMY ALLEN AWARD 1. Les Payne 4. Jim Adams 1. Larrie Schaeffer Thermic 70 ...... Playboy/OR 440 Bluebird ...... 45 2. John Bortnak 5. Ted Bieber CLASS C PYLON Beaumont ...... 407 1. Jim Robinson 3. Blake Oliver CLASS A PYLON Sailplane/OR 6 0 ...... 538 Super Sinbad ...... 1. John Bortnak 2. Les Payne 4. Peter Mann 540 Playboy/Atwood 6 0 ...... 491 Trooper ...... 2. Bruno Markiewicz 3. Bruno Markiewicz 5. Earl Hipp 460 Sailplane/OR 6 0 ...... 490 Thermic 7 0 ...... 66 MODEL BUILDER 020 ELECTRIC 1. Bill Baker Powerhouse ...... 434 -BRO 2. |oe Beshar Playboy ...... 363 3. Bob Edelstein Enough stock so that threads will not 138 · 3/32' Strato-Streak ...... 220 strip and can be re worked for many 139 · 1/8" other uses. Sets include Allen Wrench 140 · 5/32" SWEEPSTAKES TROPHY 141 · 3/16" Sal Taibi & Bruno Markiewicz Available in sets ot 4 $.80 per set (Tie, Taibi to retain trophy) SAM PERPETUAL TROPHY AWARDS Heavy duty 243 - 7/32" Ernie Shailor Trophy (Class B Pylon F/F)...... Mitch Post Pond Fuel Allotment Trophy . Sal Taibi Marquadt Trophy (30 Sec. A n tiq u e )...... Mitch Post Compressed Air Trophy.. Tom McCoy Richard White Memorial (Cl C C a b in )...... Sal Taibi Twin Pusher Perpetual ...... Larrie Schaeffer Robert R/C Texaco Trophy ...... Don Bekins Feather Merchant Award ...... Gerald Martin READERS WRITE The following letter was received by the publisher of Model Builder from Harry N. Fosbury. It is self-explanatory and needs no further introduction. Dear Mr. Northrop: This letter is in reference to /ohn Pond's "Plug Sparks" in the August 83 issue of Model Builder concerning the Pacific Coaster model and the kit. A letter to Mr. Pond from Mr. H.T. (Tip) Smiley about the kit and what it was composed of is only about 75% correct. In the April 83 issue, Mr. Pond credits Jim Walker as the producer of the Pacific Coaster kit. This is not true. I produced the kit under the trade name of Eagle Wing Model Aircraft. I will explain the kit, what it contained, and how it was produced, etc. )oe Weathers is an old friend going hack to the middle thirties. All his creations are old friends to me. When I heard about the Pacific Coaster design. I asked )oe to keep me posted on same, loe then told me that the plans for the Coaster would soon appear in Model Airplane News. It was the summer of 7946. if my memory is correct. After the plans appeared in M.A.N., / wrote to Joe that the design was a natural for molded shell construction. Joe then sent me the original plans from which I generated the molds to make the kit. The molds still exist. Four molded 1/ 8th x 6 x 48-inch balsa sheets made up the fuselage. The tin- rudder and stabilizer were attached to a special molded tail section which finished off the fuselage contour. This section was removable, not glued down as Mr. Smiley wrote. Like many of the old time gas jobs, the tail section was made removeable for ease of transportation. This section was keyed to the main fuselage so that alignment was always positive each time it was assembled for flight. DU BRO PRODUCTS, INC. Fuselage shells consisted of four 480 Bonner Road Wauconda, Illinois 60084 shells: right and left bottom, and right DECEMBER 1983 WHEN CONTAf ING AE/VERTISERS, TELL 'EM MODEL BUILDER SENT YOU! 67 Contest Manager Karl Spielmaker must now choose between his M ini- Champs site in Michigan or Bong Field at ACCESSORIES Racine, Wisconsin. At this point, we don't hold much hope for Wright- Patterson AFB. We’ll keep you in­ < PILOTS formed! · STANDARD · SPORTSMAN RACING · MILITARY WHEELS ► Electronics . . Continued from page 34 VINTAGE · SMOOTH CONTOUR BALLOON · GOLDEN AGE many variables that it often becomes a matter of opinion what is best, some < ENGINES manufacturers will subtract the 455 KHz y PRATT & WHITNEY · WRIGHT · IE RHONE on a certain frequency while others will add it. A receiver will work with the 455 being added or subtracted, subject of RARTS ► course to proper tuning. DATTf & WHITNEY · IE RHONE Physically, most crystals found in R/C WRIGHT · GNOME equipment look the same, with the exceptions of the leads. The one with the solid, heavy pins, needed for any - g u n s j installation in a socket, is called an HC-25/U type. The same size crystals, ,ι^μ γ with thin.solder-in leads,isan HC-18/U. LEWIS ^ VICKERS · SPANDAU · PARABELLUM Your receiver, Walmir, I believe uses the HC-18 type. An HC-25 may be used, SEND $1 FOR FULLY ILLUSTRATED CATALOG however, the holes in the printed circuit DEPT. MB 181 PAWNEE ST. SAN MARCOS, CALIFORNIA 92069 board will have to be enlarged, using the joined at the center section with 1/16th smallest drill bit possible that will permit ALL H£W! birch ply on both sides of the spar. The insertion of the crystal pin. Use care, drill end result was a very strong all-balsa from the foil side, and be sure that CUSTOM SCHNEURLE. wing. The wing’s center section was continuation of the foil land is not COX 009 ENGINES! reinforced with either crinoline or broken, and that no solder bridges are Racing & Stunt versions with special parachute silk to prevent caving in when made. Clean the solder connections hard chrome & honing technology. attached to the fuselage with rubber with some alcohol, and in this case, as in A ls o , bands. Parachute silk was readily avail­ all such cases involving crystal changes Complete inventory of individual stock able at surplus stores back in '46. the on older systems with lower tolerances, and custom parts for Cox same was also used around the landing retuning is necessary for best operation. T.D. 020, 049, 051 ά 09 engines. gear fairings. This month's mail brought a letter Competition parts & accessories for The cowl was made of four shaped from Don Gravelle, way up there in Combat, Free Fit., C/L & R/C Racing, blocks of balsa. It was this area that the Kingston, Ontario, saying: Speed, Stunt & Team Race. builder had to do some carving and "7 am new to R/C flying, so I have a Exclusive distributor for the hollowing out. A fiberglass cowl was in couple of questions about airborne Nelson 15 engine & parts. the works, but never saw production. battery packs. First of all, I own a Futaba For detailed catalog, send 50 cents to: All told, there were 73 kits produced. FP-4L system, w ith N i-C d batteries. Kustom Kraftsmanshlp, Box 2699 Most of these kits went throughout the When the system has been freshly Laguna Hills, CA 92653 Northwest, the rest were scattered charged, the airborne pack measures 5.4 Telephone: (714) 830-5162 throughout the country. The kit was volts. As the system is used, the voltage never really accepted by the general will decrease. My question is what is the and left top. These shells were assembled modeling public. Its biggest problems lowest value o f voltage that the airborne on a crutch which was preassembled were its radical departure from standard system can be safely operated at. Futaba and furnished. Half-formers were then model construction, and the lack of has an Audible Flight Checker, the installed in the bottom shells. Landing funds for advertising. To produce the FP-FC1. and the alarm goes off when the gear formers consisted of four matched same kit today would be out of the airborne pack reaches 4.3 volts. Is this sets of 3/8 thick alder grooved to accept question . . . the cost would be prohibi­ correct!’ You see, I am an electronics the 1/8th prebent wire gear. tive, not to mention the lack of balsa in student, and I’ve designed an audible The cabin top was formed to curve up the six and nine-inch widths. flight checker, only I wasn't sure what to match leading edge of wing, and was That just about covers the kit of the the critical voltage was. If you could not carved from thick balsa blocks per Pacific Coaster in a general sense, and I answer this question, I would greatly Mr. Smiley. The cabin top was band- hope has pul to rest all the rumors about appreciate it. The resistors at the output sawed to shape, ending up 1/2-inch same. — Harry N. Fosbury of the voltage regulator are correct for thick throughout. THE WRAPUP 4.3 volts. If it is something else, then the The stabilizer was molded to airfoil We always try to conclude the column divider chain may need readjustment. contour (of one of the NACA stream­ with good news, an anecdote, or some The 5K trimpot is adjusted to whatever lined sections), and no spar was used. such interesting item, but the latest news the critical voltage is. The stabilizer consisted of two 7/76th on the 1984 SAM Champs is not all that "My second question concerns an­ molded balsa sheets nine inches wide, great. other form of testing of the airborne not 3/32 per Mr. Smiley. The fin was also In a telephone call with Don Belote, it battery pack. I wish to place a resistive 1/16th sheet balsa with a solid balsa trim now appears that the Old Toledo Muni­ load on the battery simulating worst case tab as a rudder, adjustable and lockable cipal Airport, Metcalf Field, will not be conditions, i.e., maximum current out, to any setting desired, usually slightly to available. From reports, it now appears and m onitor voltage versus time. I w ill the right. that one runway must be kept open for then get an idea of the amount of flying The wing consisted of eight, 1/16th any itinerant flyer. This is an untenable time available per battery charge. Un­ balsa sheets six inches plus wide. A full- situation for free flight when the wind fortunately. I have no idea how much depth spar notched halfway to receive blows at 90 degrees to the two runways. current the airborne system w ill draw, the 1/8th thick ribs ran the full length, Tough one to lose! therefore I don’t know what resistor 68 MODEL BUILDER FOX B B R C What y really counts?

Bore...... -650 Bore .850 Stroke...... 600 Stroke .790 Displacement...... 199 Displacement...... 45 RPM with 8-4 prop...... 17.000 RPM with 10-8 prop...... 14,000 Weight ...... 81* oz. Weight...... 12oz. Fuel Consumption...... 4 oz. min. Fuel Consumption...... 9 oz. min. $ 5 9 . 9 5 $ 7 4 . 9 5 FOX EAGLE ill

"Please, can I fly your Fox-powered model? I’ve been waiting six weeks for a needle for my $200 Im p o rt."

It’s great to own a top quality motor — but Bore 800 Bore 907 Stroke...... 715 what really counts is flying it. With a Fox Stroke .937 Displacement .36 model engine you get not only quality — Displacement ...... 81 RPM with 9-6 prop ...... 14,000 RPM with 11-7 prop...... 13.000 Weight ...... 9% oz. you’re also assured service and parts when Weight 17 oz. Fuel Consumption...... 6 02. min. needed. Fuel consumption . 1% oz. min. $ 5 9 . 9 5 $ 9 4 . 9 5 Why miss weekends of flying waiting for parts? Just call our 24 HOUR HOT LINE FOX anytime, and the parts you need will be on the 78 R C way. We provide 24 hour shipment on 99% of the parts our motor owners will need. Call our HOT LINE for technical advice, too. WE know what counts... Fox keeps you flying. FOX HOT LINE: (501) 646-1656

Bore .840 Bore...... 1.00 Stroke...... 715 Stroke ...... 1.00 Displacement ...... 40 MANUFACTURING CO. Displacement .785 RPM with 10-6 prop 13.000 RPM with 12-6 prop 12,500 Weight 9Va F © X 02. Weight...... 17 oz. Fuel Consumption .7 02. min. 5305 TOWSON AVE FORT SMITH. ARK 72901 Fuel Consumption 1% oz. min. $ 5 9 . 9 5 $ 9 4 . 9 5 value to choose. If you could shed some had other correspondence recently draws a small amount current, as low as light on this topic, I would greatly about similar circuits, you might check 50 ma, at rest. This value increases appreciate it. Again thanks heaps for any back for items of interest. rapidly each time a servo is caused to information you could give me. Blue move, the actual value being dependent Skies!" on air loads on the controls, and made First things first Don; take a look at the worse by tight clevis pins, rubbing enclosed graph, which tells what one of pushrods, glued hinges, bottomed the popular battery manufacturers throttles and nosewheels, and any fric­ claims for his batteries. Most are very tion producing or movement limiting similar; there is a very gradual drop in feature the individual can build in. Then voltage for about 90% of the capacity, too, your habits in the air affect this. If then a sharp dive down. Generally, 1.1 your model is out of trim, and requires volts per cell is considered the end constant correction, if you fly some­ value, so the 4.3 volts for a four-cell pack thing small that flits around your head is a useful figure, though I personally Dischargeable capacity (against nominal capacity) (%) with constant heading and altitude would use something slightly higher as I changes, or if you are just plain nervous prefer to know that a battery is close to Voltage curve of normal Ni-Cd cell at various on the sticks, you’ll use more current discharge, rather than to know that one discharge rates. than will the properly trimmed graceful has died. Most of the battery capacitance model which spends longer periods testers are set for a 300 mil load, with a Your other question is a bit more between control inputs. I’msureyou get 4.4 volt cutoff, and it works in practice, difficult to answer ... in fact, impos­ the picture, it is just too difficult to say I would use that figure. Your circuit is sible, just as you ask it. However, don’t that a certain system will use a certain interesting, and should require only despair, there is another way of arriving amount of current under normal or readjustment of the 5K pot for it to work at the information you are looking for. worst case conditions and come any­ at this only slightly higher value. We’ve You see, a well designed modern system where near to a true figure. DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU! 69 even has a Thermal Sniffler transmitting on 50.090 M Hz! (7) Range is out of sight with Sagitta XC!” Well, two things are immediately obvious, Porter’s Hobbies is not operated by a hangar flyer, and Jim has certainly solved the problems as they S W IN G E E - might affect his particular combination of equipment. Since writing the Sep­ A New Concept For Model Builders tember column, I have also flown the model which I mentioned was in the last stages, with great success. I am using ς \ ^ T \ \ twin Kraft KPR-8FD receivers, also men­ tioned in the same column, everything standard throughout, without the slight­ est problem. This seems to indicate that FM is less susceptible to the long lead In-line control device has built-in for sample, technical information problems, which time should tell us bellcrank, controlhorn and hinge. and price list. Include $3.50 for more about. Made o f D elrin — the space age postage and handling. To confirm that Jim’s system does material that is impervious to tempera­ Wholesalers/dealers welcome I work, Kraft Systems now has a "Shielded ture changes and age b rittlin g . The testing period is over ... the Servo Cable Extension Kit” , which For more information see your local SWINGEE is now available for you! consists of a four-foot length of No. 22 hobby shop or write direct to ScanAm three conductor shielded cable and the necessary connectors. After determ in­ ing the exact length of extension s c a n a m needed, you add the connectors accord­ WttRNAIlONAl I*W»NG HCOWO««K> 1000 Quail, Suite 290, Newport Beach, CA 92660 · 714/833-9098 ing to the furnished instructions, and go fly, hopefully glitch-free. which, when it starts to increase is a sign There is a fringe benefit to such of deterioration in the performance of extensions. The small wire normally the motor, or a possible damaged gear. used for all R/C interconnections gets to Higher drain servos should be used in be unacceptable in the long lengths now low use channels, such as throttle and being used, and for the amount of rudder. current that the high power servos The other hint has to do with batteries demand, the resistance is so great that . . . write for a brochure for SR Batteries, the servo actually operates at less voltage Box 287, Bellport, NY 11713. .. you’ll be and with less efficiency than is other­ very pleasantly surprised at the increased wise possible. The heavier wire used in capacity available from its batteries the Kraft extensions, and as described by compared to many others of the same Jim, eliminates this voltage loss and lets size and weight. The figures are not just your servos develop their full rated claims, I have confirmed them many power. As stated, I don’t have any ill times, and most of my equipment is now effects from the long leads, but I am SR battery equipped. changing to the shielded leads to eli­ My last advice to check your supply of minate the voltage drop. long underwear, as winter is just around There is one small difference in the the corner! Porter and Kraft methods. Jim uses two LONG SERVO LEADS, AGAIN conductor cable, with the shield be­ Thus, we do it backwards. We charge I received an invitation to “ COME FLY coming the negative lead, and requiring the airborne battery, and measure its W ITH PORTER’ S HOBBIES,” 1127 connections at both ends of the exten­ capacity, either with one of the com­ M itc h e ll, W aterloo, IA 50702. From sion. The Kraft method uses three mercial units such as the Ace Digi-Pace, there, Jim Porter writes, concerning the conductor cable, plus the shield, which or, as you have suggested, by a curreni subject above as mentioned in the is connected only at the receiver end, versus time discharge down to 4.4 volts. September issue: and being left floating at the servo end. Then, we recharge, and fly a carefully "Per your request in the last column Any advantage that one might have over calculated amount of time, then without for information on how to cope with the other is going to be determined by recharging, discharge the rest of the way long servo leads. I enclose the following: one of the many other variables, such as in the same manner as done previously. (Ί) This installation is used in a Sagitta XC different equipment design and length. This gives us the amount of current we with aileron servos 48 inches out in the If your equipment is Kraft, then it is used during whatever time we flew, and wing (Kraft mechanics, Ace Electronics obviously best to get Kraft’s kit with all will give us a true figure of available servos, Kraft FM receiver on 53.5 MHz). the necessary hardware in one package. flight time for that particular airplane (2) It is also used in my Clipped Wing If your equipment is something else, under those flig h t co n d itio n s. Said Cub with aileron servos 20 inches out in then you’ll have to obtain the pieces figure will be different for a larger model the wing (same servos, Ace Silver Seven individually, in which case give Jim’s with heavier control surface loads, or for receiver on 53.2, Gemini Twin Power). method a try. If the particular Belden a lighter, floater type. (3) I recommend using foil shielded cable is not available to you, any two- Don, you appear to be taking this cable with the external grounding wire wire shielded cable with the internal battery capacity thing rather seriously, used as the negative battery lead, the red conductors being stranded, at least 24 more so than the average beginner, so internal wire used as the positive battery gauge and preferably 22, is worth a try. there are a couple of other hints that I lead, and the black internal wire used as Thanks to Jim Porter up in Iowa, let’s would pass on. One is to monitor the the signal wire . . . Belden 8547 FR-7 4. hope we hear from others who have servo current, either with a simple meter (4) I use a Kraft charge receptacle tried either method and will share their in the power leads through a plug-in (#120069) at each end of the cable run in experience with us. adapter between the receiver and servo, the wing. (5) You should shorten the PRECISION RESISTORS or with a meter equipped servo tester. servo lead to the minimum length Last year, in connection with some What you really see is the motor current. possible, Kraft No. Τ230Ί2. (6) My sagitta particular circuit that was discussed 70 MODEL BUILDER Power systems in stock for Le e t ro^ IB A Gm^ Lectro or similar sailplanes: All balsa, pre-built & sanded, ready for finish — the easy way to • Astro 05 Sport, 7 cells get into electric! Just join wings, • Leisure Pattern 05, 7 cells finish & install motor/radio — and • Geist 30/7 or 30/8, 7 or 8 cells outstanding flyer! Specs: 2 meter • Keller 20/7, 7 cells $195.00 span · 3 channel (rud., elev., • Graupner Jumbo 550, motor) · for 7-10 cell systems. 8-10 cells

W m NEW! Sanyo Red - “Cutoff” cells - 800ma in a 1 oz. package about the size of AA wilshire model center cells! Latest technology — lightens wing 3006 Wilshire Blvd. · Santa Monica. CA loading for sport or competition. 90403 · Phone (213) 828-9362 New Wilshire Catalogs! RC Sailplane and Electric Power specialists for the U.S.A. High Tech Sailplanes . . S2.50 Electric flight systems Hours 10-5:30 Mon.-Fri. 10-5 Sat Closed Sun. here, I mentioned that precision resis­ (Not quite true . . . the proofreader was tors are rather difficult to obtain in small the one with the faulty program. — The HB-ENGINES quantities from mail order suppliers. I proofreader) Made m W Germany am happy to report that I have located Anyway, read the second frequency Power through Precision such a supplier, who catalogs a wide listing without the “ may affect” , it’ll range of 1/8th and 1/4-watt metal film make more sense. H.B. ENGINE ACCESSORIES resistors in 1% tolerance. They are mil- SAFETY NOTE spec RN-55C and RN-60C types, and are I know . .. you get tired of people P\l HB-ENGINES I —\ Made in W Germany priced at 25c in single quantities, with telling you to be careful of this and to be 1—*1 Power through Precision the price going down attractively in careful of that . . . but let’s face it, larger quantities. Precision resistors are accidents do happen, and hazards H.B. ENGINE ACCESSORIES not the only things this company sells, should be mentioned from time totime, you can also order all your needs in especially for those newcomers who HB-ENGINES Made m W Germany carbon film 5% resistors, as well as might not really be aware of their Power through Precision capacitors, ICs, transistors, electronic existence. I’m not going to tell you again hardware, etc. to keep your fingers out of the prop; this WRITE FOR FREE COLOR CATALOG The company is International Elec­ is more electronically inclined and has Diitributed in the U.S.A. by: tronics Unlimited, or simply, IEU, Inc., to do with those component leads that BAVARIAN PRECISION PRODUCTS CO. 435 First St., Solvang, CA 93463, (805) you sometimes hear landing across the P.O. Box 6, 22 Edit Avenue · New Canaan, Connecticut 06840 688-2747. Its catalog is free . .. tell them room as you clip them off. model relationship. This will result in a who sent you . .. and should be a useful Transistor leads are especially bad stronger signal at the receiver antenna, addition to your information file. about this, as they seem to be made of and will sometimes save you from those INTERMODULATION harder material than most resistor and glitches that occur at long distances or INTERFERENCE GLITCHES capacitor leads, and being smaller in on those ground-dragging, long and low Back in the September column, page diameter, they could be more damaging. approaches. 62,1 was talking about the above subject, In fact, it is not uncommon in the Though designed for the Silver Seven, and got exactly that, glitched either by electronic industry for those persons the slanted antenna mount will work the typesetting, or the typesetter’s word involved in assembly work requiring equally well with any transmitter using a processor. It happed in the second manual lead clipping to be seen wearing 11/32 in. antenna, and having just 5/16 paragraph, in which I listed a number of safety glasses, and that is what this in. clearance under the antenna post. old and new frequencies which could subject is about: these small leads fly Though intended for use with 3.5 mm conceiveably mix to produce problems off with enough force to penetrate the hardware as used with the Silver Seven on other 72 MHz frequencies. It reads: skin and would certainly imbed them­ antenna, slight redrilling will permit use '72.080 & Channel 38 may affect 72.550 selves in your eyeball if you were un­ of any of the commonly used antenna 72.160 & Channel 42 may affect 72.630" lucky enough to be in their flight path. base screws. A longer than normal . . .and three other such combinations. For minor work such as the average center screw at least one inch long is Sharp-eyed reader Hal Jackson, who is hobbyist does, I wouldn’t go so far as to necessary. listed further in the same heading as recommend safety glasses everytime This is a good item, especially for you AM A’s District X Frequency Coordinator you solder a transistor into a board, but it antenna-draggers. Ace R/C No. PLA390, was the first amongst others to point out would certainly be a good idea to make at $1.00, without hardware. A 3.5 x 25 that Channel 38 is 72.550, and so on it a habit to hold each lead as you cut.or mm bolt, required to retrofit older Silver down the line. He is right, of course, and at least to aim it in a direction that won’t Sevens, Part No. HWO10C, is available the mystery was solved in checking have it fly, or ricochet, into your eyes. for 20c. between my original copy and what you 'Nuff said! m c d a n ie l r/ c d c system c h a r g e r finally received. I can only assume that ACE R/C OFFSET ANTENNA MOUNT Only slightly larger than the cigarette our typesetter was still programmed Ace R/C’s Silver Seven transmitter lighter plug with which it comes with the "may affect” which is present now comes with an offset antenna equipped, McDaniel R/C Service’s DC and correct in the similar listing in the mount, which places the antenna with system charger is proof once more that preceding paragraph, and automatically approximately a 15 degree upwards good things do indeed come in small added the words in the second listing. angle, for a better transmitter antenna to packages. Designed to provide charging

DECEMBER 1983 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 71 » exciting to turn something on, with "no * smoke" as Rodney says, as that first BUZZ WALTZ * WANDIT'M + takeoff. Well, almost! ♦ Dealers invited And please share with us, either to me ♦ R/C DESIGNS *

DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 73 “ Its 'go power’ comes from the Jedel- sky wing (like on Honker). If you haven’t tried this wing on the slope . . . you haven't lived yet! “ Bill uses an Ace Silver Seven trans­ EPOXY RESIN CONTINUOUS FILAMENT mitter, a Kraft receiver, and Kraft KPS-12 • 526*4.8x3.7*3. · ΙΟ»β.ΙΟ*7.ΙΙΧ6 · · GIANT SIZES servos. 7*4.7x65 *4.95 3 BLADE *14.96 18X8.18X10 $34.96 "Go fly, (signed) John Dyal.” Thanks for sharing with us Bill’s LEFT o* WIGHT HAND. • 8x4.8x6.8x8 · I2.6»6 Miliiwv 20X9.20X10 *39.96 9*4.9x89x7 *7.96 4 BLADE *24.95 22X8.22X10*49.96 White’s Lightnin’, John. Although I V08TSX TIPS AVAIL. • 10X4.κ>χβ. 10*8. · PITCH GAUGE · |/2A«nd giant sir«« personally haven’t tried the Jedelsky 2 fo 3 WEEK DELIVERY 11*9.11x7.12*4. up lo 12in *29.96 straight tip and wing approach, I know many who have »2*8 *9.96 right hand only and have liked it. For those who may not D*al*r· Invited be familiar with the Jedelsky section, it is 1-303-469-3928 for M.C.ViSAltCOD formed by two sheets of balsa, one or moil C*Bh,Chock or M.O. to about two or three times as thick as the 108 Emerald St. Sroomfleld.Co. 80020 other, and triangular ribs. Before shap­ ing, the wing looks something like this:

do look like potentially superior sec­ tions. So stay tuned, guy! RUBBER STRIP SCRATCH BUILDING FROM PLANS FAI RUBBER. Made in U.S.A. Of special interest to anyone wishing After shaping, it looks something like SIZES: 1/4", 3/16”, 1/8", 3/32", to build a model from Model Builder this: plans (oranyoneelse’s),CraigHuntziger, 1/16", by 1 mm thick (.042"). Rt. 2. Box 326, Park Rapids. MN 56470, B O X ED : 16 ounces of rubber per box. (218) 732-9216, is willing to make life PR ICE: $12.50 per box, ppd in U.S.A. easier for you by making a custom kit for (California residents add 6% sales tax) those plans. All you would have to do is A very similar approach to the Jedelsky build the model as if you had purchased KSB T IM E R S wing is being successfully used by Dick a kit. FUEL SHUTOFF Vader and Terry Troxel of Costa Mesa, Craig enclosed two photos of his 30 SEC. $11.95 California. They are using airfoils devel­ 6 MIN. DT Atmostherm original design. As you can oped by a guy named Jack Chambers $11.95 see, its structure is quite intricate, almost that are high camber, thin sections made like an antique F/F model with its "stick of solid balsa. These sections and air­ SEND 5M FOR 1982/83 CATALOG and tissue” like fuselage. Oh yes, one of — F. A.I. Model Supply planes will be further described next those pictures has Craig in it too! Every month. Stay tuned for more, again! P O BOX 3957 TORRANCE. CA 90510 indication from these photos is that That wraps it up for this month, and I Craig is an excellent builder. hope to hear from you soon with any Increase the weight and the Ci goes up If lack of building time is keeping you news or models you would like to share slightly. So what's the p oint!) from building that model which you with a lot of other glider guiders through “ 1) For the F3B class of airfoils, the best have the plans for. give Craig a try. and this column. Write to me at M od el L/D is around Ci = 0.6. As the fuselage is send him that plan for an estimate. Tell Builder, P.O. Box 10335, Costa Mesa, CA cleaned up. the Ci decreases, as the him Model Builder sent you. 92627. · wing loading decreases, the G is de­ OKLAHOMA SLOPE SOARING creased. Therefore, the best L/D is at C l I recently received a letter from ]ohn = 0.6 or less in most cases. Dyal of Midwest City, Oklahoma. This is Fuel Lines... Continued from page 20 “ 2) In the speed task, the Ci is approxi­ the second or third letter in about a year K&B Super Speed 50"·. X2C synthetic mately 0.1 plus. and a half, actually, and I'm always glad K&B FAI 0% 20% Castor “ CONCLUSION: It is desirable to to hear from John and glider guiders like Note K&B nitro percentages are close approxi have a wide, flat drag bucket that him from other parts of the U.S. and the m ations. extends from Ci = 0.1 toCi =0.6(approx.). world. I am concerned about thiscolumn SIG Champion CL Stunt 5% 25% SIG Champion R/C Fuel 10% 25%. To me, the S1120 looks good, as well as becoming too “ Californicated” as a SIG C ham pion 15 15%, 25%. the S1140 series.” clever Oregon bumper sticker pro­ SIG C ham pion Racing 35%, 25%. WHEW!! If we didn’t lose you along claims, and input from readers is always Note All SIG fuels contain a co m bin a tion o f Klotz welcome. Anyway, on with what John synthetic and castor oils, as the lubricant, as well as the way, congratulations! For your two percent propylene oxide (igniter) and two enjoyment and benefit, I will be includ­ has to say: percent lubricin. The latter is an additive designed ing some additional Seelig airfoils in the “ I’m still enjoying your column in to increase the lubricating qualities of castor oil. future. If you would like to give one a Model Builder. OTHER ADVICE try. please write to Michael Seelig for the “ Enclosed is a photo of Bill White with In addition to the above information, coordinates, his address is: 715 S. Ran­ his W hite’s Lightnin’. This may be the there are many very competent m odel­ dolph, Apt. 21, Champaign, IL 61820. ultimate utility slope machine: small, ers who are more than willing to help Please include an SASE for Michael’s simple construction, and cheap. It won't you achieve better performance. They sake! win any beauty prizes, but it will outfly are usually well-known and liked in a A subsequent letter from Michael any other slope flier except Turkey club or area. If you don’t know them on indicates his success with one of his Buzzards (the kind with feathers). At 16 a personal basis, a polite self-introduc­ airfoils on a model glider: “ I have ounces, it will fly on a whisper, and at 18 tion and a question or two are quite completed a set of wings utilizing my ounces, it will penetrate 70 mph crest appropriate. However, be sure not to S1144 airfoil and adapted them to my winds, easily. It’ll turn so short, it'll take make a pest of yourself. Sagitta. Simply stated, the performance your breath away. Aileron rolls are In this general vein, some clubs invite is good, and better than the Έ-205’ on beautiful. It w on’t fly inverted very far, expert guests to their meetings. Usually the Sagitta in my opinion and others who and it won't fly knife-edge (no rudder). the individual will make a short presen­ have seen the flight comparison.” Any size loops are the pilot’s choice . . . tation and then answer questions. It’s a Michael has since designed even giant 150-foot diameter loops, down to fine way to foster our hobby. If you’re more airfoils and “ better” airfoils. As so small it looks like it’ll stick its nose in with a newly formed group and don’t you will see in the coming months, they its own tailfeathers. know who to ask as a guest, simply 74 MODEL BUILDER \ Hobbypoxy.. .quality Hobbypoxy • The largest selection of epoxy controlled from pigment to enamel paint colors on the market, package. As a division of including metallics and primers. the Pettit Paint Company Choose from high (which has been making finishing gloss or flat, flat paints for full-size pleasure finishes. All can be boats for half a century), brushed or spray­ we start by using only the products ed. No other hobby best raw materials and paint comes close then carefully formulate Whether your model is wood, metal, to their fuel- them to our own rigid and fiberglass, plastic or a combina­ proof charac­ successfully proven tion; whether it flies, sails or teristics. specifications. Hobbypoxy.. we take care rolls, Hobbypoxy is formulated to let of the "little things". you paint, build, repair and pamper it to perfection.

> Four different epoxy glues. Select the formulation right for your materials, your working time, your technique.

A big "FREE" offer. Send for complete literature and how­ to-guide, and we‘11 tell you how to qualify for a one time, get acquainted offer of $4.75 worth HOBBYPOXY PRODUCTS of Hobbypoxy products abso­ a division of Pettit Paint Company, Inc. lutely FREE. 50 Pine Street, Box 378 Rockaway, NJ 07866-0378 contact your AMA district vice presi­ shop and in the field box. What this color photos of the Hilton sponsored dent, and ask him to help you arrange product will do for you is keep any nuts, Weeks "S o lu tio n " are available at a for a suitable speaker. screws, or other threaded fasteners from special price of $8.50 postpaid. Five-view Guys, that's it for this month. Hang in backing outand unfasteningthemselves. drawings (detailed!), along with a very there. In the fast lane that is. · This is a must where engine vibration is complete color photo package of the present. Bellanca "C itabria" (37 pictures) is avail­ One last announcement gets us all able for a special combination price of Counter...... Continued from page 9 caught up with the latest products and $26.46 postpaid. accessories from Pacer, and that is that Give Repla-Tech a try, and tell ’em already popular one-ounce, half-ounce, the entire line of Pacer hobby adhesives Model Builder sent you. and quarter-ounce sizes . . . all with (including the new Plasti-Zap and Zap- ★ ★ ★ Pacer's patented break-away tip closure. Lock) are now displayed in attractive, The Zippy Sport . . . a full-size recre­ Zap/CA has a guaranteed shelf life of 12 four-color, blister cards. The front side ation vehicle ... is one of the new months, and is available at fine hobby identifies the product and describes its “ M iniature Scale Aircraft Series" by stores throughout the U.S. uses, while the back side features handy Indoor Model Supply. The regular price Also, new releases from Pacer include Z-hints which describesome techniques is $6.95 at your local dealer, but if it’s not the chemically treated Z-ends, trouble- for applying the product. available there, send $6.95 lus$1 postage free tips for all Zap adhesives. What For further information, contact Pacer directly to IMS. The new, 16-page, illus­ makes these tips different is the very Technology at: 1600 Dell Avenue, trated IMS catalog (with lots of instruc­ small opening (.020 in.) which makes Campbell. CA 95008. tions) is $1.50, or ask fo r the Zippy them the most controllable applicators ★ ★ ★ Special and receive the kit, and catalog, on the market. Because of the chemical postpaid, for $8. Bill Hannan's 80-page treatment, the small opening is virtually Repla-Tech International, 48500 book. Peanut Power, is $8.95, but you non-clogging, and any hardened McKenzie Hwy., Vida, OR 97489, an­ can receive the book, kit, and catalog for Zap/CA on the outside of the tip is nounces the recent reintroduction of $16, postpaid. A great deal and a perfect flicked away with your fingernails. the famous Koku-Fan scale drawings gift! Indoor Model Supply, Box C, Next, Pacer wants you to know that from Japan. Printed in the USA by Scale Garberville, CA 95440. the amazing Z-foam Primer is now avail­ Model Research, this series of drawings ★ ★ ★ able in a new, smaller, field box sized is now available to the discerning scale "ZFP Mini Blaster.’’ The M ini Blaster is a modeler who wishes to fill out his scale Davis Diesel Development. Box 141, 1/2-ounce glass bottle with a handy documentation file. Send SASE for list of M ilford, CT 06460. announces a new and plastic pump sprayer. It’s the perfect Koku-Fan drawings with prices. unique CO j conversion kit for either the answer to field repairs on polystyrene Wait! That’s not all! Repla-Tech an­ Cox .020 Pee Wee or Tee Dee engines. foam core wings when used with Zap-A- nounces two new scale documentation What can it do for you? It w ill replace all Gap thick adhesive . . . no more risk of "exclusives.'’ If you need documenta­ forms of combustion ... no batteries, melted polystyrene foam. tion for a Bellanca "Citabria” ora Weeks glow plugs, or messy fuel . . . and it’s If you are into safety, then you'll want "Solution," then Repla-Tech is the one lighter than electric. The CO j system to have some Zap-Lock Medium to order it from. Four-view drawings recharges in seconds and runs amaz­ Strength adhesive on hand in the w ork­ approved by and eight ingly well with very little noise. Look at DECEMBER 1983 WHEN CONTACTING ADVERTISERS. TELL 'EM MODEL BUILDER SENT YOU! 75 construction drawings for a simple catapult glider, a rubber-powered pro­ file, and a Peanut Scale model. So. whether your modeling interests relate to pioneer flying machines. Golden Age aircraft or bizzare designs, you should find something of interest in this unique volume! Send $8.95, plus $1.00 postage and handling (California residents add 6% sales tax), for your copy, to: W.C. Hannan, Graphics, P.O. Box A, Escondido, CA 92025. Foreign orders add $1.25 for surface mail or $4.00 for air mail (south Pacific country resi­ BUILD YOUR dents add $6.50 for air mail). ★ ★ ★ OWN ROCKET Ken P. Kalynuk, proprietor of Aircraft Photo Packs, 369 Moorgate St.. W inni­ MOTORS! peg, Manitoba, Canada R3J 2L6. intro­ WE CAN SHOW YOU HOW! duces his 1984 catalog of aircraft photos. turn a 9-6 prop to over 10,000 rpm, yet it Color photos for over 125 different will idle reliably down to 2,000 rpm. One aircraft are available to assist the •40 POUNDS ounce of fuel will run the converted modeller in color schemes and scale Enya for six minutes. If you want to documentation. Canadian and United THRUST! power a biplane, the converted Enya will States military aircraft, civilian, and safely swing up to a 10-5 prop. airshow aircraft are available in different • 50Φ EACH! This E-19X conversion head may be size packs for the Standoff and museum used on the Enya 21X if an extra head scale modeller. Catalogs are 50c. • With a rock tumbler and some simple hand tools, ★ ★ ★ we ll show you how to build YOUR OWN rockel gasket (obtainable from Enya) is used. engines in your own garage or workshop lor 1/5 to The DDD conversion kit number Power Products, 766 Broadway, Sea­ 1/10 the cost ol Ihe commercially marketed motors HP-61K is intended for use with either • INTERESTED? Just send us S2.00 and we ll mail you side, CA 93955, has released their out­ our brochure along with a WORKING SAMPLE ot an the H.P. .61 Coldeup engine (a very rigger racing hydroplane kit. The Marlin electric igniter that YOU CAN MAKE YOURSELF (rom popular helicopter engine) or the Silver is a four point hydro designed speci­ materials you'll lind around the house. Star .61. These engines, operated as TELL YOUR FRIENDS A80UT USI We re Ihe 00 IT fically for use in oval heat racing. It may YOURSELF ROCKET people diesel engines, have greatly increased be powered by any 7.5cc to lic e racing torque and broadened power range. Write to: Department MB I. The Telelllte Corporation engine. Its low weight (7 pounds with a 11620 Kltchlng St. Sunnymead. CA 92388. Diesel engines won’t sag and change 7.5cc engine or 8 pounds with an 11cc power under varying loads. It will make engine) guarantees excellent turning your chopper more stable to varying performance, rapid acceleration and these amazing facts: control input demands, and be easier to excellent speed. If built according to the • It’s quiet ... but still sounds like an fly. Diesels don’t use glow plugs, so they instructions, the Marlin has excellent engine. can’t flame out . . . plus many other controllability and can hold the inside • It’s safe .. . they put fires out with advantages. lane around the turns. Its large size CO?. Write to David Diesel for more infor­ insures stability when crossing the wakes • It's lig h t. . . all up weight as shown is mation regarding their lineup of excel­ of other boats and in rough water racing 1.25 oz. lent diesel or CO? conversion kits. conditions. Its light weight enables you • It’s clean . . . leaves no messy ★ ★ ★ to “ out drag" your competitors at the residue. Scrapbook of Scale, Three-Views & start of the race and when you accelerate • It’s powerful .. . you won’t believe Nostalgia, by Bill Hannan, is a new book out of the turns. When properly set up it, till you fly it! on the market these days, and it’s one the Marlin corners smoothly and tightly • It’s inexpensive to run . . . two you w on’t want to be without if you are with almost no apparent speed loss as if minutes on a 10 c.c. tank, up to 12 into aviation history, research, phil­ it were on a tether around the bouys. minutes on multiple tanks. osophy, or whimsey. The Marlin has a unique air cushion • ll always starts . . .all the time, every This new book contains a selection of sponson design which reduces drag by time. articles culled from the work of Bill trapping air between wedge shaped • Simple speed adjustment on the Hannan, dating from 1964 through 1983. run nin g surfaces. It uses the latest head. Much of it originally appeared in the techniques in aerodynamics to keep the • Simple maintenance . .. one drop following publications: A m e rican hull stable even at very high speeds. Its of oil, once a month ... if that! Modeler, Model Builder, Sig Air- design incorporates inverted forward • Swings an 8-4 prop at 6000+r.p.m. or Modeler, Model Retailer, R/C Sports­ mounted airfoils that reduce drag and a 10-8 at 2000 r.p.m. man, M odel Helicopter News. Flying supply downforce that increases with Priced at $39.95 plus $3.00 postage and Models, Popular Rotorcraft Flying. Sport speed to keep the boat on the water at handling, this includes adjustable valve Flying. Aeromodeller (England), Scale any speed. The fuselage and cowl design head assembly, on board 10 c.c. refill- Models (England), World War 1 Aero­ also reduce lift usually developed by able tank, and receiver valve (com­ plane, the Cross & Cockade journal, and these components. The major boat pletely assembled for easy installation), /e fanatique de L’AVIATION (Erance). components are designed for complete as pictured (engine not included). This is Included are a dozen 3-view drawings adjustability. As a result, boat trim may the answer to treu “ School Yard Seale.’’ of fascinating aircraft suitable for scale be changed at the lake without rebuild­ Two new David Diesel Development modeling, including obscure pioneer ing the boat. diesel conversion heads are now avail­ monoplanes, a Golden Age racer, a The Marlin is constructed of aircraft able at either retail outlets or factory biplane, a triplane, two canards, an grade plywood with foam core spon- direct .. . they are the E-19X and the Autogiro, a Gyroptere, and three dif­ sons. All parts are pre-cut and precision HP-61K. ferent Farman Mosquitoes. Countriesof sanded to shape. The kit includes all The E-19X is intended for use on Enya origin represented are: England, France, necessary wood and foam parts, alu­ ■19X glow engine. After diesel conver­ Germany, Spain and the United States of minum sponson support extrusions, sion, the Enya .19X becomes the perfect America. motor mount, and a fiberglass cowl. A choice for .25 to .35-size planes. It will Added attractions are ready-to-use complete hardware kit will be available 76 MODEL BUILDER soon after the kit release date. The boat is designed to use a flex cable drive system which is engineered so that you will not loose your favorite prop even if the cable breaks. The kit contains full- size building plans and a comprehen­ SOUTHERN PRO RETRACTS sive instruction book that covers con­ struction and running adjustment infor­ mation to insure a fine performing hull. The Marlin is available from Power Products direct only at the present time. SERVO Form erly: It sells for ninety dollars less the running hardware. it it it ACTUATED PRO-LINE No modeler’s workshop would be FOR and complete without Dremel tools, espe­ cially the versatile Moto-Tool. Now. as a RELIABILITY SOUTHERN R/C special Christmas promotional, you can buy for your favorite modeler a choice of two combination Dremel tool pack­ ages. One package (M odel 3801SP) features a FREE Dremel Model 1500 "IF THE RADIO WORKS THE LANDING GEAR WORKS. Woodburning Kit with a Model 497 IF THE RADIO DOESNT WORK, IT DOESN'T MATTER" Soldering Tip ($23.70 value) when you SEE YOUR DEALER OR DISTRIBUTOR purchase a Variable Speed Moto-Tool Kit (Model 3801SP). DAVE BROWN PRODUCTS The other Christmas special features a FREE Dremel Guide to Compact Power 4560 LAYHIGH RD.. HAMILTON. OHIO 45013 Ph. (513I 738-1576 Tools book ($7.95 value) when you purchase a Constant Speed Moto-Tool kit (Model 2501SP). ( ) Make an air scoop. Mark its position For more information regarding ythis on the hatch, glue the scoop to the special Christmas promotion offer, write hatch, then cut away the hatch material to Dremel, Division of Emerson Electric as needed to allow for air passage. Com pany, 4915 Twenty First Street, ( ) Finally, install the 1/32 ply hatch Racine, VVI 53406. hook on the hatch, the 1/8 ply hatch ★ ★ ★ hold-down hard point in the front The Hobby Barn is proud to announce compartment, and the 1/8 ply wing the release of its new, low cost Pattern/ hold-down hard point at the rear of the PEANUT SCALE NIEUPORT 11 FLYING MODEL Sport airplane, the "Total Chaos." Mr. main fuselage compartment. )oe Bridi was commissioned to design ( ) Set aside while the other compo­ COMPLETE BALSA AIRFRAME OF PRE this fine ship which uses the same airfoil ASSEMBLED FUSELAGE. WINGS & STRUTS nents are completed. INCLUDES DUMMY ENGINE. PROPELLER. as the world-renowned "Curare” Pat­ WING CONSTRUCTION WHEELS. AND TISSUE COVER AND FLY! $67 50 tern ship. This deluxe kit is all balsa and ( ) After you decide which size wing PR1NTWOOD KIT $6.95, PLAN (2shls I $2.50 plywood, and includes a very complete you wish to make, cover the wing plan Add $2 00 U S Delivery hardware package, with an excellent set with waxed paper or plastic wrap. Calif. Residents Add 6% of plans. Wingspan is 65-1/2 in. with a (Waxed paper should be used in con­ 30 PG BOOKLET $2 00 wing area of 699 sq. in. for a .60-size struction is to be done with CA glues.) j O NOWLENAERO engine. These specifications in com­ ( ) Mark the 1/4 x 5/16 trailing edge/ 139 BOARDWALK B bination with the Curare airfoil give the hinge line (5/16istheverticaldimension) GREENBRAE.CA 94904 Total Kaos excellent low speed handling for rib notches, and cut the notches 1/8 characteristics, and make this airplane deep with a Zona saw. (Glue a strip of ( ) Place the upper main spar in the one that both Sport and Pattern fliers wood to the blade using CA glue to upper rib spar notches, but do not glue alike will enjoy. control the depth of the cut.) yet. The special introductory price is ( ) Place a piece of scrap 1/8 stock ( ) Place a full-length shim (1/16 to $56.99 (plus $4.60 postage and handling). under the waxed paper and over the 3/32) on top of the 1/16 LE sheet at the Add $2.00 for C.O.D. orders. The Total drawing where the 1/4 x 5/16 TE/hinge location of the leading edge. Then place Chaos is available only from Hobby line is shown. (This is to shim up the a piece of waxed paper over this shim so Barn. P.O. Box 17856. Tucson, AZ 85713, hinge line piece.) that it will not be glued to the 1/4 sq. LE. phone (602) 747-3633. · ( ) Now, pin the notched 1/4 x 5/16 ( ) Now,usingasmallsquare,straighten piece on top of the 1/8 shim with the and align all of the ribs, and glue them Fast Eddie . . . Continued from page 30 waxed paper separating the two. into the notches of the TE by dripping ( ) True one edge of the 1/16 sheet LE CA glue into the notch. piece for the top front fuselage and a material (using a straight edge and a ( ) Glue in the upper spar and carefully piece for the hatch. sharp blade), and place it in position tack glue the ribs to the lower spar. (Do ( ) Glue the top front fuselage sheet in over the plan (with the trued edge over not allow glue to seep down to the 1/16 position. Then, tack glue the hatch piece the main spar location). sheet that is under the spar.) into position. ( ) Then, place the lower 3/16 sq. main ( ) Place the 1/4 sq. LE on top of the ( ) Sand the entire fuselage structure by spar in position on the 1/16 sheet. Use shim (waxed paper between the two) rounding the corners and shaping the "T ” pins with pin clamps (Rocket City's) against the front surface of the ribs. nose. (Use scrap balsa to fill the gaps in to hold the spar in position. Do not pin (Check the vertical alignment of the LE the fuselage nose before and while through the spar! with the ribs and correct if needed.) sanding to shape. Your aim is to achieve ( ) Place the ribs in position over the Now glue the LE to the ribs. a nose shape that fairs into the spinner spar and into the TE notches. (Note: the ( ) When all the glue has dried (or hard­ you plan to use.) center ribs differ in size in their after ened), bevel the LE with a razor plane so ( ) Cut or break the hatch free, and, sections, and require shimming up an that it conforms to the upper contour of after the wing has been completed,sand extra 1/16 to compensate for the center the ribs. The leading edge sheet must to fit over the wing leading edge. section sheeting.) glue fully to it after being bent over the DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELE 'EM MODEL BUILDER SENT YOU' 77 Note: for a Monokote hinge, the horn ψ "SERIES 50” Old Timer R/C STRUCK'S 1940 wire must be placed near the upper sur­ 1939 , face of the aileron, and will need to be N E W RULER able to slide in and out of the hole in the AIR TRAILS J ,J Partial Kit aileron. The regular hinge, with the SPORTSTER C e $39.95 $3 3 .0 0 hinge at the center, requires that the horn wire be centered — these hinges 29 to .36 (.90) Clow 1938 74" Span; 835 Sq. in. C" or "D" Ignition are glued in only at final assembly. POWERHOUSE In addition to the Just Released New Ruler, the ( ) Add the 1/32 plywood wing bolt following partial kits are also available. support. 9 $ 3 9 .9 5 The 1936 FLYING QUAKER (Megow's) 89·* $21.50 50" SPAN 380 SQ. IN. 32-38 OZ/ The 1937 QUAKER FLASH (Megow's) 67"span $17.50 ( ) Once again fit the wing to the wing The 1937 "LONG" CABIN. 78" span $20.00 saddle of the fuselage. When you are 3 CHANNEL, .09 TO 15 POWER The 1937 AIR CHIEF (Ideal's). 61" span $20.00 "SERIES 50" Kits are Full Kit* wltn Machine Cut t Partial kits are Rib. Tip. and Former kits, i ney satisfied that it is correctly aligned Sanded Parts. Formed Landing Cear, Partial R/C feature Machine Cut and Sanded Parts. Full Size (adjust the saddle as needed), drill Hardware, Detailed Full Size Plan*, and Printed Construction Plans, and building notes. They Assembly Instructions. [2 or 3 Ch R/C Cear Reqd. I meet SAM FF and R/C requirements. through the wing bolt support, wing TE, COMINC. 5*1" Quaker; 48" Flybaby, «»8" Miss America COMING. 120" KC-2; 89" Miss Deleware. 96" Lanzo RB and ply wing bolt hard point. Drill with a Cleveland Viking; 50" Cleveland Cloudster. 3/16 bit. Remove the wing and open up At your Dealer or add $2.00 per order, the hole in the wing so that the 1/4-20 a m m a r for UPS. Ca. Res%)j nylon bolt will pass through. Then, tap ______P O . Box #9. Midway C ity. Ca 9?655 add 6% for Tax. the ply wing bolt hard point for the it necessary on the prototypes, but if you 1/4-20 nylon bolt. think you might need it, pin the struc­ ( ) At the location indicated on the 002 ENGINES Ϊ ture over the plan on the building plan, cut a hole for the aileron servo on surface to keep things perfectly straight. the bottom side of the wing. Then glue the webbing (1/32 sheet, ( ) Finish sand the wing and set it aside grain must be vertical) against the back for covering and final assembly. side of the spars the entire length of the EMPENAGE wing. ( ) Glue rudder parts together and WE NOW HAVE A COMPLETE LINE OF ( ) Now, you may remove the wing sand to shape. BROWN. TELCO and DAVIS CO-2 ENGINES ( ) Sand the stabilizer and elevator to INCLUDING SPARE PARTS and SERVICE from the building surface, and with the framed-up fuselage, place the wing in shape. See fuselage side view for eleva­ BROWN TELCO tor hinge line shape for Monokote A-23 PEANUT $39.05 STANDARD TELCO $24.95 position and mark and drill for the 3/16 CAMPUS BEE $34.95 TURBO 3000 $32 95 dowel wing pin. hinge. If you wish to use a standard CAMPUS TWIN $59 95 TURBO 8000 $36 95 SODA CHARGER $12.95 ( ) Install the pin and epoxy into posi­ hinge, then shape the elevator hinge line thus: DAVIS- COX 02 CONVERSION TO CO-2 $39 95 tion. Before the epoxy hardens, place NEW! CATALOG No. 25 - St JO the wing on the fuselage with the pin in­ serted through the hole in F2, and hold Peek-Polymers FINISHING AND FINAL ASSEMBLY BOX 2498-MB______LA MESA, CA 92041 / in position until the epoxy hardens. ( ) Next, install the 1/16 sheet wing ( ) Finish sand all parts in preparation for covering and/or hinging. ribs. center section on top and bottom. ( ) For a M onokote hinge, I prefer to ( ) Now take the second piece of 1/16 ( ) Cut the 1/4 X 1 tapered TE stock to the sizes required for the tip TE, the use strips of Monokote. When attaching sheet and true one edge (if you have not the topstrips (first), I use a 1/16 spruce or already done so) with a straight edge and center TE, and the two ailerons. ( ) Using the building surface, align the balsa spacer. Then, I bend the elevator/ knife. ailerons up sufficiently to iron on the ( ) Glue this sheet, trued edge to the tip TE pieces, and glue into position at the tips. bottom strip so that the bottom strip rear, to the upper spar. sticks (through the gap) to the top strip, ( ) When dry, start at the center, bend ( ) Glue the blocks into posi­ and is then ironed down fully. the sheet over the ribs and press against tion and carve/sand to the airfoil shape and the desired tip shape. ( ) For conventional hinges, for now, the LE. Pull the sheet tight, make a pin slot the stab/elevator and the w ing/ hole through the sheet into the IE,and. ( ) Take the 1/16 music wire and cut to ailerons, and test fit the hinges. Do not while holding the sheet in place, put a length for two ailerons. Remember, the glue the hinges into theslotsat this time. drop of CA glue into the hole and hold horns are offset in the wing . . . one will be longer than the other. Install the The hinges are glued into place after the until cured. Work toward the tips until surfaces have been covered. Then, the the sheet is attached fully to the LE. plastic tubing bearings on the wire, and bend the wire to shape. (Note: a slight hinges are epoxied (for pinned hinges) ( ) When complete, remove the wing rearward sweep of the horn will give or CA glued (for solid type hinges) into panel from the plan surface, turn over, some positive aileron differential.) The place. and (from the bottom) glue the top wire at the horn end should be 3/8-inch ( ) Now, cover the entire model with sheet securely to the ribs, spar, and LE. long from the bend point. your favorite covering material. As Fast ( ) Trim off the excess 1/16 sheet, and ( ) Now. solder the 3/32 O.D. x 7/8- Eddie is well stressed already, the extra with theTE shim increased to 3/16 in., lay inch brass tubes to the center end of the rigidity of Super Monokote is not a the wing on the plan, bottom up, and aileron horns, then flatten the part that requirement. Still, we recommend the pin the TE in position over the shim. extends above the horn wire. Drill the use of Super Monokote. As an alterna­ ( ) Bevel the LE with a razor plane as flattened tube for the aileron clevis pin tive, you might consider the use of you did with the top side. with a 1/16 bit (check plan). Coverite’s Mica Film, as it is a very light ( ) Glue the other 1/16 LE sheet (the ( ) Cut the center tapered TE piece as material, and can save a little weight. one that you've been building over) to needed to clear the horn wire and ( ) Next.assemblethestabandelevator the spar, bend the sheet over the ribs, bearings. (How you cut here will depend to the fuselage. (Hinge them first.) Be and bond to the LE. on what typeof aileron hingeyou chose.) sure that the stab is accurately aligned in ( ) Remove the wing from the building ( ) Install the horn wires and thecenter all dimensions. Mark and cut away the surface. By using finger pressure and tapered TE piece, making sure the horns covering where it will glue to the fuse­ applying CA glue through the gap be­ move freely. lage. Again, check alignment and glue to tween the spars, bond the sheet to the ( ) Shape the ailerons for hinging: the fuselage. ribs. Also, run a line of CA glue on the ( ) Carefully align the rudder, and mark LE-1/16 sheet joint from the inside. and cut away the covering where the ( ) If you prefer to use shear webbing, it rudder will contact the stab. Align and should be installed now. We did not find Monokote hinge Standard hinge square with the stab and fuselage and 78 MODEL BUILDER Just iii 'Tim e for* Christmas OVSRHfSHTSR Ctorge master

The Overnighter charges either one or two transmitter 8 cell From the Chargemaster you can charge up to four receiver packs and one or two receiver 4 cell packs from your 12 packs and two transmitters at the same time from the same volt car battery. Both receiver charge rates are individually device. After the overnight charge is complete, flip the programmable at 25, 50, 90, or 120 ma, the overnight rate Chargemaster to trickle and you can leave the batteries on for 250 to 1200 mah batteries. Both transmitter outputs can charge indefinitely, being ready to fly anytime you want. If be set at 50 or 90 ma for standard or SR batteries. you have large packs or SR batteries, the charge rates are Can be permanently mounted, or remain portable, in programmable up to 120 ma. LED's m onitor proper operation. your van, RV, or trailer to provide even more convenience The Chargemaster could be the only charger you'll ever because of the m ultiple outputs. A fully regulated, constant n e e d !! current device so if the vehicle engine is running it won't be affected. LED's indicate proper charge and on condition. 34K55-Chargemaster, Kit $36.95 NOTE: the 12V source battery should be of high capacity 34K55C-Chargemaster, Assembled $46.95 such as a car b a tte ry . Watch future issues for more new products from Acel! 34K50-Overnighter, Kit $22.95 34K50C-Overnighter, Assembled $29.95

Our catalog is full of Christmas gift ideas from accessories to airplanes. Send $2.00 for our current catalog. If you must order direct add $1.00 handling fee. BOX 511D, HIGGINSVILLE, MO 64037 (816) 584-7121 glue in position. and the receiver. switch leaf. Then, the unit was simply ( ) Install the hatch hold-down screw. ( ) The elevator servo is installed placed, not mounted, in the area. Of ( ) Make provisions for a landing skid if against the right fuselage side, behind course, if you have a small on-off motor you fly over a hard surface. Over soft the motor battery pack. controller, a second location is the area grass, I have not found a need for a skid, ( ) The receiver is placed beside and to above the motor battery and beside the but otherwise, something like an Ace the rear of the elevator servo. To do this, aileron servo. (Note: a dynamic prop R/C Glider Skid (two strips)should work F3 must be cut away to clear the receiver brake is a good idea, for a free wheeling OK. so that the receiver can pass through it. prop can catch on landing, possibly RADIO AND POWER INSTALLATION The receiver will then lay just above the causing damage to the prop and model.) ( ) Small servos were used in all proto­ fuselage floor, part way through F3. (Use ( ) Mount the motor on-off toggle types, and are probably a requirement. seating tape and mounting tape to safety switch on the right fuselage side, We have used both Ace R/C Micro position and hold the receiver . . . it near F2, or to the rear of the seventh cell servos and Futaba S-20 servos with great must remain clear of the aileron horns in seven-cell installations. Insulate it success. and the elevator pushrod.) from the cell in seven-cell arrangements ( ) Install the 1/8 x 1/4 spruce aileron ( ) Make the elevator pushrod from with strips of seating tape. servo blocks, and mount the aileron threaded rod (with mini-clevis), 3/16 sq. ( ) Mount the radio on-off switch on servo. Add the aileron pushrods and spruce, and 1/16 soft wire. the right fuselage, just forward of the clevises. ( ) Install the elevator horn and theele- elevator servo. ( ) Position the motor battery on the vator servo. (Use mounting tape and/or FINAL PREPARATIONS fuselage floor behind F2. silicone glue to hold the servo to the ( ) With all components installed and ( ) Cut two 1/8 X 1/2 balsa pieces so that fuselage side and bottom. With mount­ ready, check for correct balance. I have they fit crosswise in the fuselage on top ing tape, spread a light coat of epoxy found that a safe balance point is at the of the motor battery pack. glue on the surface where the mounting wing spar. Slightly forward of that is a ( ) Cut two 3/16 sq. balsa strips to the tape is to make contact.) Install the push- safer balance point, but beware of a length shown, and with the two 1/8 x 1/2 rod and shape as needed for the run. reward balance point, as with a rearward pieces below them, glue them to the ( ) Fit the flight pack battery, and make center of gravity, you could find that the fuselage sides. (The 1/8 x 1/2 pieces are provisions for it to be held in position model is unstable in pitch as well as rotated to allow battery pack removal.) when the wing is fastened down to the having a tendency to snap roll at slow ( ) Add the 3/16 X 1 balsa piece behind fuselage. (I used an Astro 250 mah speeds. the motor battery. This prevents the square pack . .. Ace R/C offers a similar ( ) Check for any warps in the wing and pack from moving rearward. Your own pack . . . and the wing held the pack in tail. Remove any that you discover by pack will determine the exact position. position.) twisting and reshrinking the covering (Note: for seven-cell packs, we have ( ) Install the on-off servo/micro switch material. placed the seventh cell above the motor unit in a convenient place. I simply ( ) Set the control throws: Set the pack in the front right corner just behind placed it in the space between the elevator for 3/8 in. up and down to start F2. Some foam packing can help hold it m otor’s rear and F3. The micro switch with. Set the ailerons for 1/4 in. up and in position when the wing is installed.) was attached to the side of the servo with down to start for the “ stock” power ( ) Next, check-fit the elevator servo mounting tape. A long arm activates the systems, and 3/16 up and down for the

DECEMBER 1983 WHEN CONTACTING ADVERTISERS. TELL 'EM MODEL BUILDER SENT YOU! 79 Make the aileron horns from 1/8 in. ΜΙ- 1Α, r-ö ^M u i MINI-ANTIC SÍPE aluminum per the drawing. The horns NEW FROM IfO C tO r V6 s c a l e k it are made so that the ailerons can be removed at anytime. When assembling the ailerons to the wing, slip the horn in place by gently opening up the split end and pushing it over the spar. Slide the aileron rod through wing, slip the clamp in place, set the horn in place over the clamp, align the aileron, and tighten the lock screw. Screw the outer hinge in place. (Remove in reverse order.) ASSEMBLY AND ALIGNMENT » I’ll not get into the alignment method A BEAUTIFULLY DETAILED WW-1 ERA FLYING MACHINE. WITH OUTSTANDING LOW SPEED CHARACTERISTICS. which I used in very much detail be­ FLIES A LANDS LIKE A FEATHER. 57 IN. WINGSPAN. 5.8 LBS.. USING .40 A UP 4-STROKE ENGINES. COMPLETE KIT. LESS WHEELS. ENGINE ft PROP :____ INTRODUCTORY PRICE (to 6-30-84) S 98.00 ♦· SHIP cause I haven’t yet seen a good builder PROCTOR. P.O. BOX 1333, LA JOLLA. CA. 92038 For additional information, call (619)278-9000. or who didn't have his own personal write. For a complete 40 page catalog, send S 2.00. method of achieving this. up, then adjust the trims and begin to Slide the lower wing into the pod RELIABLE ENGINES fully check out the controls. assembly. Make sure the wing is cen­ AT When landing, I have found that Fast tered properly. Tack cement the wing REASONABLE PRICES Eddie can be slowed up rather apprecia­ only enough to hold it in place. If the bly. Still, it is best to keep the speed up pod was made correctly, incidence will be two degrees. The space around top of Midwest Model is the source for: until you are sure just how much you can safely slow it up. Also, be advised that the wing can be filled in later. • IRVINE ENGINES FROM ENGLAND Fast Eddie, being rather clean, will float Bolt the assembly in place on fuselage. • H.P. ENGINES FROM AUSTRIA quite a bit before touchdown. So, be Check for horizontal alignment first, • COMPLETE STOCK OF SPARE PARTS careful of over-shooting on landing. then sit the fuselage up on end on its • COMPLETE SERVICE FACILITY Still, try to keep your landing as gentle as firewall. Check for the proper 90-degree possible. · wing leading edge to fuselage center ^ Dealer Inquires Invited ^ line alignment.

WHITE OH CALL FOR MORE INFORMATION Tack cement the center pod to the MIDWEST MODEL ) Nieuport11-C Continued from page 18 fuselage (or tape it in place). Set the center wing in place (make not as difficult as it looks). Take a 3/16 in. leading edge cutout at this time). SOIM MW ROMEOVALE S K E A i *0441 JIJWlW m drill, grind the shank down to fit into a Block up the leading edge to achieve piece of 3/16 O.D. nylon tubing (the the two-degree incidence. Tack cement cobalt 05 version. Adjust per actual flight same tubing as used for the torque rod in place. Align with the lower wing. performance from this point. bearing surface), and Hot Stuff it to the Set the upper wing in place. If the ( ) Charge your motor battery pack to tubing. (Note: Use the nylon tubing cabane struts were made per the draw­ peak. I like to monitor peak voltage with from a Nyrod pack or Du Bro Kwik Rod ing, the incidence should be close to a digital volt meter . . . Radio Shack kit.) This, along with a fine rattail file with correct. Double-check for the correct offers three models, and the Astro 3/16 in. maximum diameter will do the incidence. chargers have jacks for the meter leads. job. Carefully make the holes from each Drill a mounting bolt hole (one strut Leisure makes a charger with a digital end toward the center of the wing. only). Assemble with a bolt and nut. readout. (Note: A new pack, or one that Make sure the front of the hole is right Set the fuselage on its firewall. Block has not been used for a time, will not up against the rear spar. up to clear center wing and make a final give full power for the first one or two After this is done, the balance of the check. Clamp or tape the upper wing to flights ... having something to do with horn area can be completed. hold it in place, and drill a hole in the “ formation” of the cells ... so don't be Add the slip fittings per the drawing. other strut. Add the bolt and nut. overly concerned if the first couple of Add the nylon tubing (three pieces), The outer struts should not be made in flights are not up to par on power. Just and cabane fittings. advance. Instead, make mock-up struts be ready for a little less power.) Now add the bottom center section from 1/8 balsa. Make one part at a time FLYING sheeting. Complete the cutout for the (left and right together) and fit until Pleased be advised that Fast Eddie is horns. correct. Then drill and bolt in place. It is offered for the experienced R/C pilot. It Sand the wing, add the outer strut not necessary to slot; just bolt to the is much too quick and touchy for the fittings, add the remaining cap strips, inside of the strut plates for now. novice. and finish sanding. After each piece is in place, cement or All-up weight of the prototypes varied AILERONS clamp the mock-ups together so that from 28 oz. to 40 oz. . . . this variation is Pin the leading and trailing edges to when they are removed, you w ill have a mainly a result of the differing weights of the plan. Add the lower cap strips now. perfect pattern for making the final strut power systems. The eight-cell Astro 05 Make the ribs per the drawing and assemblies. came out at just under 30 ounces. cement in place. Add the upper trailing ALIGNMENT AND STRUT ASSEMBLY Leisure LT-50 and Astro XL systems (six edge and top. Add the upper capping. Make the final strut assemblies now. cells) were in the mid-30s, while the Sand to fit wing. Slot them just deeply enough to clear Astro cobalt 05 (seven cells) came in at 40 Groove the leading edge per the fittings, but don’t drill holes yet. Set the ounces. detail on drawing. Cut the torque rods struts in place on the inside of the The launch is quite important, and to length. Make straps from thin copper mounting plates. Clamp them in place. more so with the "stock” systems. You shim stock. Hot Stuff the 1/8 in. rod in Now drill the holes. Check for final fit need a hard, straight-out heave. So, find groove. Put the straps in place. Solder to and bolt. someone who is good at this... a poor the tubing and at the rear overlap. Add After making sure the holes are in the launch can crash you real quick. the inner rod (3/32 in.), leaving room on correct place, you can now add cable After launch, go for altitude, but stay the outer end for the hinge. Hot Stuff fittings. Make cables per the drawing. o ff excessive up elevator until good each end. All cabane and landing gear bracing is speed is gained and maintained. Once AILERON HORNS made from .025 music wire. All flying 80 MODEL BUILDER

parking lot, Jeff Perez was also faced with being first up. Jeff had a little VINTAGE R-C PLANS problem on his flight: the ball turret on the bottom of that big B-17 fell off in the middle of what was a good flight, and everything from that point on was a big, ' V ~ ....T * T r r fat zero. My flight, on the other hand, _ ' PBY-5A "CATALINA” was reasonably good (that means I got 9 FT. WING SPAN ALL RIBS 8 POLL FORMERS SHOWN ON PLANS 11 back on the ground in one piece!) and PLASTIC FNG.COWLS % 9.90 PR. the contest was now underway. And CLEAR GUN BLISTERS $6.60 PR what a contest it became! 4 large plan SHEETS — Plans $16 9 5 Bob Underwood look the lead during 6 f t . WING SPAN MODEL PBY-5A the first round with his colorful Hiper- VL-102 ENGINE COWLS t 6.50 PR. PIQHS $ 12 9 5 bipe. Close on his heels was Earl Thomp­ GUN BLISTERS I 4.50 PR ADD $2.50 POSTAGE son’s ME-163, followed by Bob Wischer ELECTRIC CATALOG-OVER 50 PLANS J i 0 0 DEALERS WRITE ______and his Piel Beryl. PROPULSION WORLD » 1 WIDE The ME-163 was the focus of some SYSTEM controversy as to complexity bonus as it Send SID MORGAN 50C for 13157 ORMOND.BELLEVILLE , MICH.48111 U.S.A. took off on a jettisoned dolly, and complete landed on a retractable main skid and illustrated faced Dave and said, "As United King­ tail wheel. An interesting point was CATALOG FAST dom spokesman for Sheelds, I hereby CHARGE made as to what kind of taxi the aircraft bequeath Danny's pushers to you. I should perform, as the prototype was CONSISTENT know that Danny will be thrilled to know reportedly towed, not taxied, into take­ PERFORMANCE they are safely in your hands to stay. Also off position. We let the judges handle it, to show his appreciation for the‘Crow.’ ” and I believe they considered it a five QUIET OPERATION - permits (lying most anywhere- Dave was non-plused, and quite percent (retractable monowheel) model city parks, front yards, etc moved by Joe’s generosity with my stuff. and allowed a straightforward taxi. LIGHT WEIGHT - 2 Ά Oz. - but powerful enough for Beshar related the whole incident to Steve Sauger provided a little excite­ models weighing up to 10 oz me upon his return to the States and ment for the crowd on his first flight by INSTANT STARTIN6 - no priming, no continuous now everyone is happy. I’ve got a model trying to retract his landing gear on the flipping of prop to start of a truly unique antique, Dave Baker Stinson Trimotor before it was airborne. MORE EFFICIENT - lower rpm - lower running cost has the best flying Twin Pusher in the It didn’t work! No major damage was CLEANER - no fuel to mess up your plane. world, and Joe Beshar has his own "O ld done . . . it just skidded along on the Crow", (Karasů, that is). grass, and Steve called an attempt. The I have decided to share this ancient beautiful Trimotor features differential PRODUCTS find with anyone interested via this throttles, that is, the center engine 1 7B71 ALABAMA AVENUE . *16 magazine. For a set of plans of the CANOGA PARK . CALIF 91304 comes up to full throttle before the Karasů, just write to Model Builder. See outboard engines. It’s an interesting proceeded to whimper and beg and lick the full-size plans ad in this issue. concept, and is designed to prevent a his hand with great fervor. If you do build it, please let us know poor responding outboard engine from "Please Joe, I beg you. Please bring how it flies, comments, pictures, etc. If affecting acceleration during takeoff, back the plans of the Japanese model. enough folks build "Crows” , we could plus allowing Steve to throttle back the Please bring back my Twin Pusher in the even have a contest. The winner would outboard engines in cruise while main­ John Wayne attache case. Please Joe, get a bowl of Teriyaki, a bottle of Saki, a taining moderate power on the center please!” Samurai Sword, and a picture of Sesue engine. He was moved. Hyakowa kissing Shirley Yamaguchi!!! At the end of the first round of R/C, As he brushed aside a tear, he pro­ Now if you’ll excuse me, I’m going out with all the static scores posted, it looked mised. I think he also mumbled an and fry my Clow! like anyone’s ball game as most of the ancient Royal Armenian Air Force curse Danny Sheelds, 3 Cinnamon Cir.. Apt. statics were closely grouped. The lower under his breath. He is the commander, 1C, Randallstown, M D 21133. · static scores were attributable to either you know. When you are a real true- the model being genuinely "Standoff", blue, died-in-the-wool SAM Old Timer or poor documentation, as there were Scale Team . . . Continued from page 13 modeler, even the curses are antique! no dogs in this array of models. Crafts­ True to his word, Joe stopped at the manship was tops throughout. Baker's domicile after the Paris meetings Bob Wischer and Dick Byron drew the While we were fiddling with our And true to their style, Hilda and Dave dubious honor of having theirs be the control sticks at the R/C site, M ike Gretz Baker dragged him into their home, first models judged. At the end of the was establishing a first round lead over at along with over 100 U.K. Old Timers .. . day, they were afforded the opportunity the control line circle with his venerable drawn in as if by a huge magnet, or an for rejudging if they so desired, but both Zlín Akrobat, a plane Mike has cam­ Electrolux! What a "Bundle of Britains” declined, willing to accept whatever paigned for many years. Mike took a lot . . . and for just one, old (really young!), unknown score had been awarded to of kidding from his competitors about grey-headed traveler from New Joisey! their aircraft. Static scores were not to be taking it out of mothballs for this con­ As the time to leave for Gatwick posted until after the model’s first test, but he ended up with the last laugh. Airport (and then home to Kennedy) official flight. He combined his high static score and a approached, Dave presented a weird­ Saturday morning bloomed bright smooth first flight to jump out ahead looking vinyl box with magenta carrying and beautiful, with sunny skies and the quickly. handles to Joe. This custom case con­ promise of warm temperatures. A light, A full second round was flown on tained the two dismantled Karasu’s, direct crosswind on the R/C runway Saturday, and the team was pretty much which Dave asked Joe to carry across the made takeoffs and landings a real chal­ decided for control line by the end of Atlantic, stating that one was for me and lenge. By luck of the draw (at least that’s the day. Jeff Perez put it all together with the other was for him. He also asked how they said they did it!), I was given the B-17, and Ron Sears came through Joseph if he might possibly grow another what, as I said before, is a dubious with what he described as "the best hand rapidly, so as to be able to carry distinction ... I was to make the first flight he’s ever made” with his Stearman back my pushers in their case. Com­ flight in the R/C competition. Over at PT-17. Mike Gretz wowed the crowd mander Beshar then came up with one the control line circle, which was located once again with his Zlin, and once those of the few good ideas in his life, when he in the middle of the spacious gym three were ahead, no one was able to 82 MODEL BUILDER GOON - 1938 FEATHER MERCHANT TEXACO/ANTIQUE 1939-1941 —7 5 "

CLASS A - 46" /S26.50* $ 3 6 .9 5 * CLASS C - 72" /$32 95* 80" R/C ASSIST / $42 95*

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seriously threaten them. The man with round to shine. He guided his Hiperbipe the best chance for a challenge was to an incredible 2464 flight (with only a Steve Ashby, a member of the 1982 Scale 10 percent bonus!) to jump ahead of Team, whose MU-2, which seems to be Steve Sauger into what would be second getting better looking every time I see it, place. This set the scene for Skip Mast earned second highest static points. and his C-130. “ Matched Performance System” Being a 20 percent model with twin Skip had already pretty much wrapped for TOP PERFORMANCE engines and retracts, all he had to do was up first place in the second round with a K&8 ENGINES put in one decent flight, but it was not to flight score of 2780.05, and it seemed 16 Airplane · 4 Marine be .. . Steve was plagued with retract impossible that he could do much K&B EuELS Κ&Θ GLOW PLUGS 7 Bienos « crxxces and flap problems. better, but better he did! He turned in “ Matched Finish System" The highlight of the second round had an outstanding flight score of 2893.8! for BEST APPEARANCE to be young Julie Abel and her Sig Clip Consider the closest score (utilizing a 10 k&b f ib e r g l a s s cloth k&b Micro-Bauoons filler Wing Cub. On this flight, Julie's Cub percent bonus) was Underwood’s 2464, K&B SUPER POXY RESiN K&B SUPER POXY ThiNNER took off towing a banner which read more than 400 points behind! It’s almost K&B SUPER POXY PRIMER K&B SUPER P0XV PA NT “ Hello Dolly” in recognition of Dolly impossible to beat that kind of a flight K&B MIXING CUPS Wischer’s birthday! Apparently the score, and Skip deserves all the credit he K&B MANUFACTURING judges as well as the crowd enjoyed it, as receives for being so consistent in flying 12152 Woodruff Avenue Julie scored an impressive 1595 flight! multi-engined models. It’s a rare Downey. California 9024 1 For the third and final round of flying moment when you see Skip Mast com­ on Sunday, the flight order was reversed, ing in with an engine out. move me up to the first alternate spot in reasoning that as the top of the list However, it wasn’t over yet. If Charlie fourth place. supposedly received the calmest air for Chambers could get a complete flight At the control line circle, the third flying on Saturday, the fliers on the out of his F9F-8 Cougar, everyone was round was rather uneventful, with Perez bottom of the list would now have an certain he would be assured a spot on further cementing his grasp on first equal opportunity at the best flying the team considering his high static place with a 2231 flight. Charlie Bauer, conditions. score of 2458. Charlie had scored much piloting his Mitsubishi Zero from the Steve Sauger and his Stinson Trimotor lower static points at the Nats just two Top Flite kit, finally had everything work was first up in thestill airof the morning, weeks earlier, and by taking the advice right for him, and his fine flight of 1698 and it was soon obvious that Steve had of the judges there, made numerous moved him up into fifth place, the performed his best flight on Saturday changes in outline and markings over second alternate spot. Charlie’s Zero afternoon. The Trimotor is an excellent the two weeks. It paid off in those featured a unique electronic system flying machine, and once Steve gets a elusive extra static points that are so hard utilizing seven servos in the aircraft. He few more flights on it. I’m sure he’ll to obtain on the upper end of the scale. uses four servos for retracting gear and acquire consistency. One flight is all you Unfortunately, Charlie once again had gear doors, two servos for flaps and the need in FAI, however, and as Steve had a the fan problems he’s been plagued last servo for a drop. very good second flight on Saturday, it with since he went to a bigger engine, Along the same lines (no pun in­ appeared certain that he had locked up and it resulted in his not being able to tended) of utilizing electronic controls a spot on the team. On this third flight, complete a flight. (Go back to the 7.5 in a control line model, Clancy Arnold the Trimotor suddenly became oddly Charlie!) flew a P-38 Lightning featuring his own quiet, and Steve begin making an angled, Because of the reverse flight order, I design “ U/Tronics” system. Clancy’s short approach toward the runway. was now the last person to fly in the servos in the airplane operated indi­ Turns out, he not only lost an engine.. . trials. The pressure was on, and I needed vidual throttles, brakes, retracts, flaps, he lost two engines during the flight, a flight of 2495 (with a five percent and ! and the big Trimotor was respectfully airplane . . . the Spezio) to knock Sauger Ed Rhoades, flying the same AD-7 winging home on only the starboard out of third place. It seemed like an Douglas Skyraider that he competed engine! Steve made it to the grass at the improbable task, and it proved to be just with at the Westover Nats two weeks side of the runway, and flared it in to that. A heavy crosswind came up just as I earlier, held on to the fourth place everyone’s applause. It may not have was taking off, catching a wingtip and position, first alternate, which he at­ been his best flight, but it was one I’m lowering the precision of my takeoff (get tained with his first round flight of 1636. sure he’ll remember! out the crying towels!), however, the As the dust settled after the third George Rose tried to challenge in the rest of the flight was great, and we round, everyone gathered over the R/C third round with his P6E Curtiss Hawk, waited with bated breath for the statisti­ site for the awards ceremony. We were but once again was frustrated by a tank cians to compile and post my flight joined by the manager of E.P. Sawyer drop that didn’t function properly. score. Turns out I didn’t get high enough Park, Rita Stosberg, a lady whose warm The third round was Bob Underwood's for third, but my 2401 flight score did personality and professionalism are DECEMBER 1983 WHEN CONTACTING ADVERTISERS. TELl ’EM M O D E l BUILDER SENT YOU! 83 Sunday, we spent all morning at the Can you really afford to use less Midwest Industries end of the airport. than the best battery packs made? Again we missed our ride in the super­ S f£ clean TBM "Avenger” , as the pilots decided to take off,dotheirfly-by of the R/C field, and then head for their SR aerospace grade battery packs respective home bases, without landing give you again at Ida Grove. Curses! • 3 Times the flying time On these last fly-by passes, it was a pity • The ulimate in reliability that scale flight judges could not have • 80 Packs to choose from for been present to watch the very “ scale­ transmitters, receivers, and electric powered cars and planes like” four-point rolls performed by • Send a self-addressed, stamped Rudy Frasca, of Champagne, Illinois in business size envelope for full his P-40, which starred in the movie details "1941” , and by Dr. Lou Antonacci in his F4-U Corsair. Each pilot pulled the nose of his ship up to about 20 to 25 degrees BATTCO^S esc BOX 287 BELLPORT NEW YORK 11713 above horizontal before rolling to knife edge. The inverted "point” was at the feel highly honored to be able to say that curving top of the arch, point “ three” I was elected to that position. In the was knife edge at a 15 to 20 degree event that one of the three R/C team downward angle, and "fo u r” was ac­ members cannot make the trip, and I companied by a gentle pull on the stick move onto the team from the alternate to level flight. A really thrilling sight to position, Dolly Wischer has graciously see! BEECHCRAFT SKIPPER: Quarter-Scale. Well . .. what about the models and 90” wingspan, 1,200 sq. in. area, .90 or agreed to take over the team manager the modelers? The nearest estimates, larger engines. Plans, S18.50 position. based on pre-registration, and adjusted Other plans: Now that the trials are over, it will take BEECHCRAFT BARON MODEL 58: 2 V Scale 85 a while for it to "sink in" to some of the to account for last-minute cancellations, wingspan· 1000 sq in (3) 3 x6 sheets $15 00 no-shows, late-comers, etc., put the Beechcraft Fm Insignia $2 00 members that they really are on the total number of fliers at around 325, and BEECHCRAFT BONANZA A36: 2 H Scale-86 team, and that they are now shouldered wingspan· 1300 sq in (3) 3'x6v? sheets $17 50 with the responsibility of representing the aircraft at a little over 400. Our own A dd $2.00 postage inside U.S. & Canada surveyal of the aircraft was limited some­ Include $2.00 for plan rolled In tube the United States in the 1984 Scale World Overseas orders add $10.00 postage Championships in Paris. I’m certain they what by the amount of time spent in our Alabama residents add 6% sales tax will carry the responsibility well. We exhibit booth and trying to find a place BUD CADDELL could have one of our best team yet. that was cool . .. there was none! 1525 Badham Dr. Dept. M. Birmingham. AL 35216 From the standpoint of being competi­ The majority of the aircraft came from 205 822-4312 kits or plan services, with just enough DEALER INQUIRIES INVITED______tive, our guys are tops. The R/C team will have 30 percent, 25 percent, and 20 original designs to keep you looking. exceeded only by her attractive smile. percent aircraft (Bob Underwood is near Super-big-to-the-point-of-monster air­ Rita has been checking with us periodi­ completion on his latest project). The craft were at a minimum, the only really cally all weekend long, helping to co n tro l line team has a 30 percent noticeable ones being Bob Campbell’s ensure our stay was a pleasant one, and aircraft (Perez), Ron Sears is near com­ C-133 and B-29, and Carroll Cheek’s 15- she was gracious enough to speak at the pletion on a 20 percent aircraft, and foot span (half-size!) Pober Pixie. But I awards ceremony. Mike Gretz is talking seriously about a gotta tell ya, in spite of my strong feel­ By this time everyone knew the out­ four engine aircraft with retracts (30 ings about the legal aspect of big, non­ come. In control line, the team mem­ percent). If our team does travel to Paris man carrying aircraft vs. models, that Pixie really grabbed me! As I walked bers were to be Jeff Perez, first, Mike with high complexity bonus models, we over and reached out (not down .. . Cretz, second,and Ron Sears, third, with stand an excellent chance of bringing out!) to touch a wingtipof this6-1/2 H.P. Ed Rhoades as first alternate, and Charlie home a world championship win to the Hornet powered model weighing 50 Bauer, as second alternate. In R/C, the U.S. pounds, I was really impressed. And the team members were to be Skip Mast, Once again, a heartfelt thanks from ail realistic flight characteristics of this air­ first, and Bob Underwood, second, and the participants to the Kentucky State craft from Buffalo, Texas, just have to be Steve Sauger, third, with Cliff Tacie as Parks and all the clubs previously men­ seen, as it would take someone with first alternate, and Bob Wischer as tioned who combined to make this Scale Hemingway’s writing capability to de­ second alternate. Team Selection Trial probably one of the scribe it in writing. One of the stipulations from AMA most purposeful ever held. An addi­ Another Texan, Kerry Hurt, flew a when the team trial proposal was ap­ tional thank you is owed to those com­ beautiful 32-pdound F4-U Corsair in proved was that a team manager be panies who were generous enough to Olathe NAS markings. From Ziroli plans, appointed at the event. With this in sponsor the beautiful walnut finished with Aero Marine retracts (yeah, Gary mind, prior to the event. Bob Under­ plaques which were awarded through fifth place: Ace R/C, Byron Originals, actually delivers some once in a while!), wood passed out forms for all contestants the "Bent-wing Bird” is powered by a Dave Brown Products, Kittyhawk to complete, part of wnich was a ques­ Byron P-51 drive unit, with Quadra Models, Model Builder, Robart Manu­ tion as to whether the individual con­ engine and Byron propeller. facturing, Sig Manufacturing, and Top testant would accept the job of team Incidentally, a Byron P-51 being flown Flite Models. manager. In addition to those present by someone (sorry, missed the name) Best of luck to all the members of the who indicated a desire for the position, who was hot-dogging too close to the team. Paris ... here we come! · the names of several other individuals ground, completed the fourth point of a qualified for the job by their involve­ four-point roll into the corrugated ment in FAI scale activities over the years Ida Grove . . . . Continued from page 11 aluminum side of a building housing were placed on the list of prospective Byron’s ultra-lights. When the debris candidates. as 50 miles away. We were lucky, staying was brought back from the ground After the awards ceremony, a meeting in Ida Grove’s only motel, just 300 yards below the large gash in the building’s of the team, R/C and control line, was off the end of the R/C field, but the air- side, the Byron-Drive unit was still intact held, and the team members and alter­ conditioning didn’t work that well in our and spinning freely, being wind-driven nates voted for their team manager. I room. by the completely undamaged four- 84 MODEL BUILDER bladed Byron propeller! The aircraft itself was somewhat less intact. . . Naturally, we had to stop and chat with Dick Parshall, of Holcomb, New IAN ALL-AMERICAN WINNER York, who brought a Quadra powered Gipsy M oth built from our plans. The Gipsy towed a banner, and occasionally. RETURNS! Snoopy would bail out of the rear cock­ § pit and parachute to a safe landing. Larry Scott brought his Waco Taper­ Super Cyclone GR Series - wing as featured in Model Builder back Single Ignition £ / ' in November 1981. It's still going strong. Airplane Engine He also brought his nearly completed D.H. Mosquito. Primarily constructed of molded fiberglass, it will be offered in SUPER partial kits by Larry once it’s been checked out. We’ll keep you posted. There was a Davis DW-1 that caught our eye. Searching around for the * owner/builder brought a pleasant sur­ B prise. It was Don Neill, Lincoln, Ne­ braska, who competed at the Nats in the early days of R/C scale. Any old timers m remember his Boeing B-9 bomber at the Pictured above is the SUPER CYCLONE as it was then, and as it will 1962 Chicago Nats? Another interesting model was the be today. This ruggedly built champion will soon be available to you “ Razorback” P-47D Thunderbolt, the once again. “ Golden Gopher". This is a prototype Our “Super Cyke" reproduction holds to the most exacting standards for the latest Byron Originals kit, being of original detail. Using today’s technology, we will provide you with a developed by Ken Bundt, and due to be guaranteed engine; built to perform as only the SUPER CYCLONE out before the end of the year. For direct-drive Quadra or equivalent can' Included in the SI89.50 purchase price: power, the “ )ug” is a surprisingly easy (Additional S4.00charge for postage, handling, and insurance.) model to fly, as demonstrated by Ken • Run tested SUPER CYCLONE engine • "Original" parts list with numbers Bryant. Its best mechanical feature is • Ignition coil, high tension lead, m odified quickly demountable wing panels, condenser, and spark plug* • “Original" display box which separate at the root after backing • "Original" cowl decals • Warranty card off two bolts. The aileron and flap link­ age, plus the air connection for the • "Original" owner's manual •If coil and condenser not required, deduct S5.00 retract gear, all separate in unison when Deliveries will begin in the fall of 1983. Your delivery position is the wing is removed, and reconnect as established by date of order receipt, S75 deposit required with order. the wing is plugged back on ... as quickly as we describe it here. Makesfor 7 Order yours today! easy transportation without the neces­ sity of investing in a van or trailer. A later model “ bubble-top” version is not far Super Cyclone Engines downstream. P-0. Box 10658· Phoenix, AZ 85064 · (602) 274-3375 Of course, both of these are to be TM preceded by the beautiful Beach Stag­ MasterCard and Visa welcome (add 5%) gerwing Model G, which is featured in this m onth’s Byron ad. The Staggerwing biplane production was delayed this summer by an RPV project, but as visitors to the plant during the Fun Fly could see, it’s in full production now, and as of early September (as this is written) needs only the retract gear parts and instruction manual to complete the package. This was pretty much Ken Bryant’s project from beginning to end. The bucks he contributed to the festival, through the Dirty Phone says that Delta Yes the retract gear will be a part of the to say nothing of the time, the planning, has bought a bunch of rear rubber from kit. You do not fly a Model G Stagger­ the facilities, the financial risks, are not Associated. And another “ trum o r" says wing with fixed gear! the types of things that can go on that Associated will soon offer a new As of this date, no plans have been forever. front tire “very similar” to what Delta made for next year’s IMAA Fun-Fly. As It could be we will see two, smaller, has in the 324 series. These two com­ mentioned at the outset of this article, totally model-oriented affairs next year panies are in competition with each there were mixed opinions by IMAA ... one in Ida Grove and one .. . well, other (that is obvious) and have com­ officials. Some want to limit future Fun- who knows where. · pletely different philosophies in most Flies to just that . .. fun-flying, with no areas.. . but what works is all that counts full-size show, trade exhibits, etc. Others when it comes right down to it. felt the outstanding, though non­ R/C Autos ... Continued from page 47 For those not paying attention, the modeling attractions provided by the release of accurately graded front tires Byron Originals organization brought them on a pan ca r. . . further details in a that do the job and still wear acceptably tremendous exposure to the IMAA, but few paragraphs. is great news for us tire freaks. If the not the right kind. Byron Godberson, for Hey, you don’t have to believe me track looks a little slick, slip on the that matter, has certain reservations about these new tires from Associated stickiest rear tires you've got and maybe about continuing the combined effort. and Delta! A recent “ trum or” passing a set of 324Cs in the front. If after a few DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL 'EM MODEL BUILDER SENT YOU! 85 motors. Actually, I am not at all clear on Why Stop Short of Full Scale Performance? what it does to the motors, let alone the sheep, but I have used this mysterious Twin Engine Sync System - For Perfectly matched RPM over the solution on stock class motors as well as entire throttle range - $60.00 tired rewinds, and a ll gradually or Accessory Controller - Allows ON-OFF control of TWO electric immediately (depending upon the motor) went faster. Hey, this stuff works devices from ONE channel - $35.00 . .. try it. The other product explains most of SC-1 Electric M otor Speed Control - For use with 02 to 20 size the funny smell in my shop. It is Delta’s motors up to 18 cells - $49.00 version of a tire dressing . . . the same stuff Art used in winning his World SC-2 Electric M otor Speed Control - For Cobalt & High Championship in 1/12 Modified. You Performance motors up to 50 size and 26 cells. Includes BRAKE simply aply it to the tires with a brush, toss the tire/wheel assemblies into a and BYPASS options! - $60.00 ‘ dealer inquiries in v it e d * plastic bag, and wait until race day. SEND S.A.S.E. FOR PRODUCT INFO About 30 minutes before the first race, JOMAR PRODUCTS 2028 KNIGHTSBRIDGE DRIVE brush on some more, wipe off the excess CINCINNATI, OHIO 45244 just prior to the start . . . and go for it. wintergreen. Associated’s Yellow Dots The instructions on the can say to make the initial application 24 hours "ANOTHER GREAT WINDER" would be the hot tip, Gary just doesn’t have any on hand. Jeff Belcher, another before race day, I have also heard of IMPROVED hot Pro-180 racer locally is using two of racers doing this 72 hours before the SMOOTHER the shims, cutting his caster to only two race. Enclosure in a plastic bag cuts degrees. I would suspect that the same down on evaporation .. . and the smell! L i« - $64.95 tactic might work on other pan cars if The effect is to soften the tires an easily Plus shipping equipped with a differential rear end. noticeable amount which on the race DELTA’S B.S. DETECTOR track gives more traction. Rear tires only The meaning of that lead-in will soon get this treatment, you are asking for trouble if you use this stuff on front tires. JOHN MORRILLS "SIDEWINDER" become apparent .. . Delta has a new electronic gizmo that the more serious That’s it for this month . . . more goodies next month! · Precision Built Heavy Duty Winder! racer of electrics will like. It is called the Turn Counter kit- $18.00 Delta DIS-831 Precision Discharger. $1.00 FOR CATALOG With this magic tool, you can apply a F3B Champs . . Continued from page 26 constant and very accurate load to your JIM CROCKET REPLICAS battery packs, which (among other P.0 BOX 12600 things) allows you to actually predict (4th). Dave Worrall of the UK was in FRESNO. CA 93778 how long your race car can be expected third. Dave’s speed time, by the way. was to run on a full charge. You can also use 22.2 seconds. laps the car is pushing too much but the it to quickly pick out a cell which has I.est I give you the impression that the back end seems OK, simply go to 324Bs in gone bad or to show how well (or poorly) Germans were always the top three or front. With experience, you can actually matched all the cells in your packs are. four scoring pilots in each round, I must watch other cars practice and know just This is where the B.S. detection comes tell you that they weren’t. A round-by­ what combination to put on your car. All in. You see, Delta sells packs made up of round scrutiny of their scores tells the you need is a selection of tires like that matched cells; they test and grade each story; Ralf Decker finished 1st, 1st, 7th, offered by both Associated and Delta.. . and every cell they sell. Buy a six-cell 4th, 9th, and 5th for a 1st place overall; and a lot of experience! pack, and you can be sure that all the Dr. Quabeck finished 4th, 7th, 1st, 12th, OH THOSE PAN CARS! cells are very closely matched. Other 3rd, and 21st for a 2nd place overall; I just came back from MRP a few companies sell just cells, and don’t make Reinhard Liese finished 2nd, 2nd, 11th, hours ago, and Gary Kyes was last seen any claims for having them matched. 2nd. 15th, and 9th for a 4th placeoverall. heading to the "Thrash Room” with Still others sell what they claim are Each contestant was allowed a throw­ several pair of Delta’s 324B fronts in matched cells, when at-track use says away round. These scores may not look hand, fresh off the UPS truck. Gary, as otherwise. very consistent, but believe me, they are well as several other racers here in How are you going to be able to tell compared to most of the better pilots. Seattle, have been pushing the MRP who is selling you truly matched cells? So, Bill, what were they flying? Glad Pro-180 to new levels of performance, They generally cost more, after all, so you asked. By now you've looked at all thanks to these new tires and adoption wouldn’t it be nice to get what you pay the pretty pictures in this article so you of current thinking in 1/12 scale chassis. for? No problem, you just whip out the must surely have some idea already. Gary is presently using a five-degree ol' Delta P.D. unit and it tells you in no What I’m going to do now is fill you in on “ reverse” shim under the front cross bar uncertain terms! This thing is betterthan a few more details. which reduces caster from the stock 12 a lie detector! The winner, as I said, was Ralf Decker degrees to 7 degrees. As with the newer Lately, I have used this unit on some . . . so I’ll start with his airplane. 1/12 cars, reduced caster helps the car older battery packs that I own. I was able Ralf's airplane has no name. Pity. Ralf’s turn in better. Then to keep the car on to break them down into rated cells, plane was a work of art. It had more line coming off the corners, Gary is using reassembling them into new packs that features both physically and electroni­ Delta 324B or C front tires. This is a are much more closely matched . . . in cally than any other plane on the field. combination that really works on the addition to locating a bad cell or two. If (Quabeck’s and Liese’s were close, how­ diff-equipped Pro-180. At the '83 ROAR you’re serious, and you race electrics, ever.) It also had more man-hours (I Nationals, Gary had everybody covered this little “ black box’’ is for you. think) invested in mold making than any like you wouldn’t believe in the Pan class BETTER RACING other. I'll begin with a description of the . . . winning going away and really THROUGH CHEMISTRY fuselage and save thejuicy wings for last. smoking while doing so. As far as our Delta has a couple of bottle products Ralf uses a removable nose cone local club races. . . don’t ask, please! you may be interested in. The first is instead of a canopy. This, however, For rear tires, Gary is softening stand­ something they call M otor Dip and we wasn’t unique to his glider as the Austra­ ard MRP D rears (here we go with yet call "sheep dip.” What it does to sheep is lians all used this method with their another rubber grading system) in a not entirely clear at this time, however, it M arjalis, and Andy Keil and Nord homebrew mix of turpentine and oil of does nothing but good things to electric Gerneke of South Africa used it on their 86 MODEL BUILDER FRANCIS SMITH’S SHIP YARD BO X 118 N O R W O O D . P A . 19074

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aircraft. (There may have been others.) two servos actuated the two flaperons wing skin with a very sharp knife. They Ralf has a vertical, fiberglass sandwich (one per). were hinged with 1/2-inch wide, mylar backbone inside the nose cone which The tail feathers were all molded adhesive tape and one Robart hinge gives it its support and doubles as a servo fiberglass... you shouldn’t besurprised. point at the driven end. tray for all five servos in the aircraft. The stab halves were molded separately Roll control was accomplished by full When the nose cone was securely (right and left) and mounted in T-tail span flaperons. The flaperons also screwed on, it was under preloaded fashion. The rudder was likewise molded handled the job of changing the wing’s compression against the fuselage and and had a knuckle hinge joint. camber for the different tasks. The touching the backbone ... a very strong Now for the wings ... In spite of the flaperons were a constant width (49 mm) combination. It appeared that Ralf’s fact that Decker’s plane’s wingspan was all the way to the tip. With the wing fuselage was perfectly circular in cross 2.8 meters (110 inches), it was molded in chord tapering from 250 mm to 210 mm, section. I would guess that either the one piece! By that I mean the span was it was necessary to increase the airfoil nose cone was part of the original unbroken, as the wing was molded in thickness at the tip so that the aluminum fuselage and was cut off, or that it was two halves, top and bottom. Because it arrow shaft knuckle hinge could remain molded separately (a la Marjali). If it was was molded, the wing doesn’t need a a constant depth. The airfoils used were cut off, then the fiberglass flange or foam core to hold its shape. The wing- Quabeck sections: HW 2.5-9 (tip, 2.5% bulkhead that held the backbone in skins are a sandwich of fiberglass, Roha- camber, 9% thick), and HQ 2.5-8 (root). position was molded separately and cell foam, and fiberglass. When the skins According to the three-view I have, the epoxied into place afterwards. If the are cured, they retain the shape of the sections were modified. The flaperons nose cone was molded separately, then mold indefinitely. were driven at the root end by a metal the bulkhead/flange was molded as part The spars in Ralf's plane were very control horn which protruded into the of the main fuselage. interesting. I can’t tell you exactly how fuselage. No flutter was observed as As I said, all five servos are located they were made, but I can tell you what the flaperons were mass-balanced in­ through the fiberglass backbone which they looked like, and that they too were side the fuselage. serves as a servo tray. The push rods pass molded. The spar caps were totally Electronically, Decker's model was through holes in the molded bulkhead. carbon fiber. By my eyeball measure­ very sophisticated. Ralf used the Simp- One pushrod from the spoiler servo ment, the caps were 1/8 in. by 3/8 in. The prop Acapulco system. With this radio, operates two bellcranks and two short shear webs were a composite of the Ralf was able to mix the flap and aileron connecting rods to the spoiler surfaces white, open-cell, Rohacell foam function into one surface (). He through the wing. If you look carefully at wrapped in what looked like two layers was able to adjust the differential throw the photo of this setup, you will see the of two-ounce fiberglass cloth. The F/G of the flaperon to eliminate adverse yaw. connecting rods and the holes in the did not wrap around the spar caps as you When Ralf used the flaperons as camber wing's lower surface. As nearly as I can would think it should. It is my opinion changing flaps, the radio automatically tell, the spoiler servo also released the that these wings were strong enough to corrected for the pitch change by adjust­ tow hook which was actually the ball and stand up to the U.S. team’s winch, in ing the elevator. In speed runs, he was socket variety. One servo actuated the spite of its “ thin” 8% section. able to flip a switch on the end of his rudder, one actuated the elevator, and The spoilers were simply cut out of the control stick and get flap coupling to the DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TE LL’EM MODEL BUILDER SENT YOU! 87 short connecting pushrod attaches to a The fourth place winner of this year’s FLY OVER LAND OR WATER: control horn on each surface and the World Championships was Reinhard SUMMER OR WINTER servo output arm which sticks out of the Liese. Reinhard’s plane, the Milan II, was wing’s lower surface. These four rods are another F3B model which was not out­ not faired at all, they are fully exposed. rageously high-tech. Like Decker's The fuselage is a molded fiberglass model, Reinhard’s used flaperons and front section mated to a tapered fiber­ spoilers. Unlike Decker’s model, Rein­ glass fishing rod blank of about 3.5 cm hard’s flaperons were driven by one (1-1/2 in) diameter at the front. The fin is servo inside each wing located at about molded fiberglass and is mated to the 1/3 of the half-span. Also, Reinhard’s fuselage tail boom. The rudder appears spoilers were quite a bit larger than to be veneered foam core. The stabs are Ralf’s in length, and they were mounted With R/C Model Hovercraft. Kit models probably veneered foam also . . . at least in the bottom surface of the wing very include XR-1B Length 40" Width 30" near the leading edge. This proved to be S69.95 + $7.00 Shipping. Challenger 1 they looked that way. Length 24"x19" $29.95 + $3.00 Shipp­ Helmut's radio mixed theflapfunction a very effective method of slowing down ing. FREE flight or Tethered models in­ into the ailerons, coupled the flap func­ a large, fast, heavy model. clude Air Scout 24"x19" $21.91 + $2.20 tion to the elevator to compensate for The spoilers were driven by very short Shipping. Air Raiser 24” Dia. $21.56 + pitch changes, and probably more, I’m torque rods which protrude from the $2.20 Shipping. Hoverbird 24” Dia. sure. The Dohle '83 has no spoilers. fuselage. A small, metal control horn re­ $17.99 + $7.00 Shipping. The third place finisher, Dave Worrall, ceived the rod and had a set screw for MC O l VISA No ______also flew a more-or-less conventional making the connection secure. Like Expiration Date ------F3B model which he calls Plus Task '83. Ralf’s airplane, Reinhard’s plane had its Signature ------— ------— Its structure was blue foam core with ballast compartment accessible only carbon fiber reinforcement over the through the spoiler bay. Lead-filled Name------— foam, and wood veneer over the foam brass tubes were inserted into the fiber­ Street------and C/F. Dave also had a fiberglass glass ballast tubes buried inside the wing skinned version. On this version it was as rifle cartridges are loaded into the possible to actually see the carbon fiber side of the old western style Winchester through the semi-translucent fiberglass saddle carbines. It is a very simple ar­ skin. When I asked Dave if there was a rangement which is very convenient for spar in his wing, he replied that there last minute ballast changes . . . no more If using Visa or Mastercard, print or type wasn't. At that point, I noticed the dark, disassembling the wings or messing with info clearly, and add 5%. For more infor­ tapered areas which I assumed (cor­ lead shot, simply pop the spoilers and mation or to order - Write: ADVENTURE rectly) was the carbon. It was about 2-1/2 insert lead! MODEL CRAFT P.O. Box 255, Youngs­ inches wide at the root and tapered to a The structure of the Milan l l ’s wing is town, Ohio 44501. Ohio residents add 5.5%. Checks or money orders only. narrow point about two-thirds of the blue foam and fiberglass skins. There is a P LE A S E ! Order now for Christmas’!!! way out to the lip. Because the Plus Task spar inside the wing, but I don’t know of has a one-piece wing, joiner tubes, wing which kind it might be. Because of the rods, etc., aren’t needed. close proximity of the servo well and the elevator (in opposite directions) so that a The Plus Task has a wing that has 116 spoiler bay to the most logical position pull back on the elevator control inches of span, 850 square inches of wing of the spar, I would have to assume that dropped the flaps and brought instant area, 15.5 to 1 aspect ratio, an empty the spar is very narrow, not more than split-S turns. At anytime, Ralf could dis­ weight of 60 ounces, and a wing loading 3/8 of an inch wide. The wing skins were engage the flap mixer or coupler. of 10.2 o z/ft.2 As far as I know, Dave used laid up on a glass surface (as in window When the spoilers were deployed, the the Eppler 193 airfoil section (as did the glass) and allowed to cure before apply­ radio automatically corrected for the two other UK competitors, Bannister ing to the foam core. The flaperon pitch change here. Aileron/rudder and Blanchard). Anyone who thinks the hinges were the arrow shaft, knuckle coupling was also used and could be E-193 is outdated had better look closely hinge type, very clean aerodynamically, switched on or off. The Simprop also at the facts. Dave had the second fastest and very tight and friction-free mechan­ featured one programmable function. I speed time of the six-day event at 19.7 ically. Here again, no flutter was present don’t know what Ralf used thisfor.but it seconds (his other times were: 22.2,28.1, in the huge flaperon surface at high was probably for the split-S turn as it 21.8, and 25.5). Consistency is a product speed. requires split-second timing to do suc­ of handling and pilot skill, so what these If you look closely at the photo of cessfully .. . the plane is in and out of the times tell me is that the E-193 can be Reinhard holding up the bottom surface turn in 0.8 to 0.9 seconds! competitive in speed, even if Dave of the Milan II wing, you will see the The number two finisher at York was d idn’t fly his best in all speed runs. spoilers at full deflection, the ballast Dr. Helmut Quabeck. His airplane was Part of Dave’s success in speed with a slots in each wing in the spoiler bay, the set up a little differently than Decker's sparless, one-piece wing may have been fiberglass fairing over the flaperon push- was. First of all, it was noticeably bigger attributable to his ballast system. Dave rods, and the two servos buried in each at 3.2 meters (126 in.). Dr. Quabeck’s loaded some ballast in the fuselage, but wing. Note the bulge in the wing skin model (called Dohle ’83) had a standard, most was located in the wing tips. The where the servos are. Evidently, the low-fin positioned, all-moving stab. It reason behind this goes against the com­ servos are wider than the airfoil thick­ also had separate flaps and flaperons. mon practice of keeping the wing tips as ness and they stick out about an eighth The Dohle '83 uses the Quabeck 1.5-8 light as possible to keep the plane re­ of an inch. In spite of this aerodynamic and 1.5-9 sections. (You were expecting sponsive to roll control. Dave’s reason­ "flaw ,” the plane did have the fastest an Eppler, perhaps?!!) Helmut relied on ing was that the farthest away from the speed run of the fifth round (20.3 sec.). I his trimmable trailing edge (or camber center of the wing was the best place to seriously doubt that this bulge affected changing flaps/flaperons) for different put ballast which could possibly over­ the plane’s performance in any notice­ conditions and tasks. load the strength of the wing's sparless able way. The Dohle '83 hasamoreconventional structure in a high C maneuver. His The rudder of Reinhard’s plane was structure. It is foam core and wood defense of the slow roll argument was ingenious in its simplicity and function. veneer sheeted, with a light fiberglass that at thespeedsthat the plane flies, this It was molded fiberglass with a foam cloth over ihe veneer. It has spars and just wasn’t a factor. In fact, it actually core. The fiberglass skins were fairly wing joiner rods. The hinge is aluminum helped him fly more smoothly. It makes thin, but the foam gave them a great deal arrow shaft material, knuckle style. The sense to me. In the photo, Dave is seen of rigidity. As the fin and rudder were flaps and flaperons are driven by servos loading ballast into the wing tip tubes of molded in one piece, it was very easy to buried in the wings (one per surface). A the Plus Task. hinge the rudder. Reinhard used the 88 MODEL BUILDER tail's skin as the hinge material. A V- shaped notch was cut vertically on one ASTRO CHALLENGER COBALT MOTORS side all the way through the tail to the fiberglass skin on the far side. This skin SUPER POWER FOR WORLD CLASS COMPETITION was left untouched. The resultant hinge was literally invisible on the left side We built our first cobalt motor in 1975 for ou« SOLAR-powered unmanned airplane SUNRISE The SUNRISE motor weighed 16 when the rudder wasn’t deflected. The ounces and produced 3/4 HP Last year we buill the SOLAR right side of the rudder had a radius PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL­ added on to it so that it almost wiped the LENGER that made its historic flight from Pomtoise. France, to Mansion. England, on July 7 1981 The SOLAR CHALLENGER fin’s trailing edge surface as it was de­ COBALT MOTOR was only three inches m diameter but flected. Very clean. delivered almost 3 HP" By using this advanced technology The T-tail stab mount was also very we bring you our new ASTRO CHALLENGER COBALT simple and clean. The stab was also a MOTORS, super-performance motors for the serious competitor, for the modeler who demands the best and fiberglass skinned, foam core, one- simply wont settle for second best The heart of these iece molded surface. Embedded in the motors is the new. high-energy, rare-earth COBALT Cottom of the stab, and secured by a flat- magnets They supply much higher magnetic flux and are head machine screw and two locator not damaged by overloading To efficiently utilize this magnetic potential we have incorporated (1) a high-grade pins through the upper surface, was a silicon steel armature lamination. (2) a high-performance Challenger 05 .... $ 7 5 .0 0 machined aluminum pivot block. This commutator capable of running al 35.000 RPM and 350“ F . and Challenger 15.. . $100.00 block extended down inside the fin and (3) a new silver graphite cartridge brush that can safely Challenger 25 . . . $125.00 had a flathead machine screw “ pivot commutate 25 amperes The nel result is a really super-power motor that is ready for world class competition THE NEW Challenger 40... $ 1 5 0 .0 0 pin” pass through it. I would imagine ASTRO CHALLENGER COBALT MOTORS - NOTHING ELSE that both the sides of the fin at the pivot COMES CLOSE!! Available now, see your dealer point and the skin of the stab over the or order direct. pivot block were heavily reinforced with LARRY JOLLY SETS ELECTRIC SPEED Send stamped self addressed extra layers of fiberglass and epoxy. A RECORD OF 92.85 MPH (2-WAY AVERAGE! envel°Pe for specifications to: pushrod came up through the fin and at­ WITH ASTRO COBALT 05 AND ( l C T O f l C l I CUT I V I P " f a s t e d d y " . . s u b j e c t t o HDIIIU ΓυΙΙΙΠ Ι I I I · · . tached to the pivot block. This was FAI CONFIRMATION. 13311 BEACH AVENUE VENICE. CA 90291 actuated by a bellcrank at the base of the fin which in turn was actuated by a push- rod from the elevator servo. well as the obvious rudder and elevator. Reinhard also had a pitch compen­ Like the Germans, Andy used electronic ★ ★ SAILPLANE ★ * sating elevator coupled with the mixing and coupling. Whenever the launching equipment flaperon which could be reverse flaps/flaperons were deployed, the hl-«tarta/wlnche«/poda coupled to give down flap when pulled transmitter adjusted the elevator trim to complete llne/best prices send SASE for Info to: up in a speed run. compensate. The same can be said of the spoilers, and the CG shift as well. Also, RLFPRODUCTS I thought that Reinhard Liese’s Milan R3 Box 360 Paoli, IN 47454 812- 723 4310 II was one of the better flying planes at Andy could reverse couple the flap/ the contest. Certainly his fourth place flaperon to the elevator in speed. showing in York and the fact that Rein­ As you can see from the photo(s) of maily as ailerons, plus they have the hard is the current German national the Skybird, the tail volume is quite ability to deflect upwards to about a 45 champion with this model indicates that large. This is necessary for pitch stability degree angle during landing approach it flies well enough! reasons with the E-211 section. The wing for glide path control. The spoilerons Andy Keil of South Africa had a very is fairly low aspect ratio compared to worked well. Best of all, the spoileron nice flying F3B model which he calls Sky- most (13:1) and has a span of three system is simple, and with the modern bird. It features a molded fiberglass and meters (118 in). I liked the looks of the radios with mixers (or an on-board blue foam skinned, hollow wing with Skybird. it was unique, especially with Christy Mixer from Ace R/C) the system carbon fiber spars and an Eppler 211 pro­ those “ gas tank” wing tips! is very easy to install. file. The stabs were also molded, but In my opinion, the Norwegian team I believe that given a good launch, the with Kevlar skins over a blue foam core. had the prettiest F3B model of all. It is Kitt 793 is a competitive model, and it I've included one or two photos of this called the K.l.T.T. 793, after its four certainly is within the building capabil­ model with this report. (Whether or not designers initials, three of whom were ities of most modelers. The Kitt 193 both are run with this report, is a differ­ team members, and after its Eppler 193 would also make an excellent AMA ent matter!) section. What made the Kitt 793 differ­ thermal airplane. Andy was a member of the 1981 South ent from most, besides its good looks, is Well, I could go on and on about this African team which placed third. He the fact that two of the three Kitts had contest and the airplanes that flew in it. flew an identical model that year (at least built-up balsa and spruce wings. I didn’t but I’ve already said much too much, in appearance) to a very nice sixth place. hear of any other models that were so and I’m afraid that if I write any more I’m Andy’s plane performed very well in constructed. likely to get edited to pieces. So I’ll leave all tasks. His speed run in the second The Kitt has a wingspan of 2.87 meters you with the above, and if there is round was the fastest of that round at (113 in), a wing area of 58.8 dm2 (911 in2), enough interest (please write in if you 21.7 seconds. If it hadn’t been for a bad a 14:1 aspect ratio, a tailplanearea 11.4% want to see more photos, etc.), I’ll in­ crash of his primary model in the first of the wing area, and an empty weight of clude more coverage as a small part of round, followed by a zero in duration in 1.9 Kgms (67 oz) for a wing loading of my monthly column. I hope that the the second round, and radio problems 29 gm /dm 2 or 10.5 o z /ft2. To me, these above will profit you in your next design, late in the contest. . . that’s a lot of ifs . . . dimensions looked “ just right." whether it be an F3B machine or just an I’m sure Andy would have been right up So what happened to the Norwegian improved thermal flier. there with the top finishers. team? They suffered an almost 100% Write to Bill Forrey, c/o Model In the third round, Andy was the winch line failure rate in practice. Builder, Box 10335, Costa Mesa, CA second best flier behind Helmut During the competition, they didn’t use 92627. Quabeck, and he only missed first place a winch . . . they hand towed. Unfortu­ Now, GO FLY! · in that round by 4.8 points. His speed nately, they were unable to launch to runs were quite respectable: 21.7, 22.3, competitive heights. 21.6, and 23.7. It’s a pity that we didn’t The Kitt 793 featured what I like to call get to see this model’s full potential. “ spoilerons.” Spoilerons are a combina­ Andy’s primary plane featured flaps tion aileron and trailing edge spoiler or and flaperons, spoilers, and CG shift as . In use, they function nor- DECEMBER 1983 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 89 affects the flight characteristics of the your head. plane. —Jake One of the biggest mistakes made by ★ ★ ★ modelers is to just put an airplane Dear lake: together, take it out and fly it, and if it Your answer to Hiccups in Hartford is doesn’t fly as if Hanno Prettner was on ridiculous. How’s he going to see what the transmitter, they say that the design he’s doing with a brown paper bag over is no good. Take, for example, the his head? Boy, are you dumb! Banshee that I flew. Most of one summer —Fed Up in Frankfort A a then tic, Ugh t weigh t was spent experimenting with CG loca­ Dear Fed Up: ALUMINUM SPINNERS tion, control surface throw, decalage, and props. You would be surprised at I stand corrected. Better make that a & COWLS the difference very subtle changes can clear plastic bag. CUSTOM MADE TO YOUR ORDER make in the way an airplane flies. Once —Jake Individuel and kit manufacturer inquiries invited this experimenting was done, I flew the JERSEY METAL SPINNING ★ ★ ★ same plane for eight years, and it flew Dear lake: 1400 Unit G, E. St Andrews Place the same way every time. I don’t believe it! Your second answer Santa Ana, CA 92705 The Byron CAP 21 flies very well is even dumber than the first one. Don’t (714) 957-0794 already, and I expect that by the end of you know how many people suffocate the summer it will be flying even better, from plastic bags every year. Morons then I can get started on the next one. like you have no business giving advice Cap 21...... Continued from page 33 This one will have built right into it, all to anybody. the things I learned from the first one, —Even More Fed Up plus more scale details. · *★ The balancer in its present form is a Dear Even More Fed Up: little heavier and bulkier than it really You’re right again. Hiccupsin Hartford needs to be. The main reason is that it Dear Jake...... Continued from page 6 should see a doctor about his problem, was designed to be easy to disassemble and you should see a septic tank service about yours. so that experiments could be made Dear Jake: —Jake quickly. For instance, I can run the I think you’re the greatest thing to hit engine without the balancer, take vibra­ the model magazines in the last twenty tion readings, add the balancer, and take years. Please accept the enclosed gift. F/F Scale .... Continued from page 55 readings again within five minutes. —Enthusiast in Encino FLYING THE CAP 21 Dear Enthusiast: For the first test flight, I enlisted the found a beautiful red. It was a Corvette Thank you for the thought, but I really aid of Don Brown, as he has been flying a red called Spectre Red. The fellow can’t accept your generous gift. I am CAP 20 for the past three years. The first behind the counter asked me if I was returning your wife under separate flight went extremely well, except for certain that this was indeed the color of cover. the glue joint between the brass tubing my choice. His next remark I wasn’t —lake and the delrin connector which failed. quite prepared to accept. This red was a Don noticed that the aileron neutral ★ ★ ★ mere S80 a gallon! Needless to say, I kept drifting, so the first flight was a Dear lake: went back to the color charts. short one. On landing we found that I've written to all the modelling advice By the end of the second week, I was both ailerons were loose at the glue columns with the same question, and finally ready to paint. Painting an air­ joint. Since then I have pinned the nobody has given me a satisfactory plane in one piece is a whole lot different adapters to the brass tubing with 1/16- answer. Maybe you can finally set me than painting individual components. I inch roll pins. straight. How come the hot shot Masters had rented a paint booth at the airport, To date, I have flown the Byron CAP 21 R/C fliers stand stone still while they go and it was equipped with fluorescent many times, and I like it more each time I through a flight, and all of us novices lights. (You know what affect these lights fly it. As the last airplane I flew was a twitch and squirm and jump around and have on colors.) After spending many Banshee, and as I have not flown in four try to but body English on every maneu­ hours of toil and sweat painting, the years, I am learning a completely d if­ ver we do? color I had chosen looked awful. I ferent type of flying .. . I love it! Flying a —Animated in Anaheim cleaned up and left, figuring that the 1/4-scale airplane is much more fun; I next day it would look better after I got it have found out that they exhibit a lot of Dear Animated: The Masters fliers have learned to visit out in the sunlight. the characteristics of a full-size airplane. The next morning I got to the airport I think the CAP 21 is the best looking the Porta-John before they fly. —Jake early to see if the color looked any airplane I have ever flown. better. Sadly, it did not. It was not a true ★ ★ ★ When I started R/C modelling many red but a muddy looking one. It was a years ago, like alot of people, I would Dear Jake: color that looked like it had been I’ve got a problem. I was flying my usually build just one of a given design prepared by using scraps! I couldn’t Class B speed ship the other day when I ... then the next one would be some­ leave it like this. The whole airplane was thing different. At one point I noticed got a case of the hiccups. Everytime I water sanded again, and another red was hiccupped, the airplane did, too. As the that the fliers who were proficient were chosen. This time the airplane looked sticking with one design. So I built and hiccups got worse, the flight path of my pretty good. After the fifth week, the ship got more erratic. The last hiccup flew four Senior Falcons, and I found Bellanca was finally completely detailed that doing that made more sense, be­ was a beauty, and caused a crash that left and prepared for the long trip east. only the aluminum pan from my air­ cause what you learn through trial and Thank God for a fantastic, and most error can be applied directly to the next plane recognizable. This has happened understanding wife!! There is no doubt to me before. In fact, you might say my airplane and consequently it usually flies that I have all of the qualifications great right off the bench. This is what I condition is chronic. I’ve tried holding necessary to be an airport BUM!! am going to do with the Byron CAP 21. my breath and scare tactics, but they Jack McCracken and another friend of What I would like to do is use the didn't work. Help! mine were to go with me, but Jack's boss fiberglass method of finishing, but first I —Hiccups in Hartford had a serious accident that prevented want toget this one flying as well as I can, Dear Hiccups: Jack from leaving work. There were five then ballast it with an equivalent weight It sounds like you’re hyperventilating. airplanes and nine people who were of the fiberglass method and see how it Try flying with a brown paper bag over planning on leaving the Corona airport

90 MODEL BUILDER together. There was a Piper Clipper, a Piper Super Cruiser, two Piper Chero- kees, and my Crusair. On July 26th, the NEW R/C Clipper and Super Cruiser departed for our first scheduled fuel stop. Cedar City, BOOKLET Wing Span--784" Utah. A half hour later, the rest of us Answers the questions Wing Area--56*1 Sq" took off and headed north. I might add most often asked by at this point that the northern route is those who want to y ' J\f& W l get started in R/C much more scenic, with better weather, flying; PLUS, it in­ ------than going through Arizona and New troduces you to the Mexico. best airplane to start We eventually caught and passed the with, the GOLDEN The SENSOAR glider FALCON! A HOBBY HORN Exclusive'! A HOBBY HORN Kit! two older Pipers, and waited for them at The SENSOAR Glider kit it » high quality kit with Cedar City. At this point, the amp meter To receive your copy Machine cut 6 sanded parts. Select quality balsa and spruce. Detailed plans, and written instructions. on my plane was way above normal, SEND $2.00 TO For THERMAL or SLOPE or OS ELECTRIC POWER. indicating too much charging. I men­ ST. CROIX OF PARK FALLS, LTD. V A L U E PRICED at $16.00 tioned this problem to my pilot friends, and one suggested that I turn off the P.0. Box 279P - Park Falls, Wl 54552 P ^ IV Semi-Kits Combined with full strtpwood master switch after we got airborne to and plan. (Now Incl. Wire. Window, etc. Mat.) rest the battery. This sounded good to wasn’t so bad that we had to change (Note: These may be purchased fust as semi- ktfa. or with plans--write or call for prices.) me. So, after taking off and getting the direction. However, Oshkosh wasn’t 1936 Buccaneer-84"-$51; 1938 Clipper MK l-72"-*$39 1937 Dallaire Spts'er- 108"-S61. 1940 Ranger- 49"- $27 gear up, I switched off the master switch. looking good at all, and it looked as 1939 Mercury-72"--$56; 1935 Miss America-84" -$59 What happened in the next few mo­ 1941 Playboy Jr.-54"--$29; 1941 Playboy Sr-80'-$46 though we should try to continue right 1938 Power House-84"--$43; 1940 Sailplane-78"-- $74 ments was enough to shake up my on rather than spend the night in Iowa. 1940 So Long-50"—$28; 1938 Trenton Terror-7T-$32 partner quite a bit! We experienced a This latter decision would not be made 193939 Zipper-54"--$48; Zippei 1939 Korda Wakefield-44"- $17 f ov r MODEL CO Semt-kits Combined w /strip loud noise followed by dense smoke until we reached Sioux City. 1936 Flying Quaker-84"-$49; 1937 Quaker Flash-67**S38 1937 Long Cabin-78'·-$42; 1937 A ir C hicf-61'------$40 appearing from behind the instru­ As before, the two older Pipers took STRUCK '5 1 9 4 0 74" Span. 835 Sq. in. ment panel! Instinctively, I turned the off first, followed by the Cherokees. I SEMI-KIT (Plan Incl.) 533.00 master switch back on. More smoke was doing my mag check when the left new ruler Combo (Full) Kit---- $63.00 SCALE PLANS and DRAWINGS followed. Naturally, I set the bright red mag indicated that it was completely S-50 HEINKEL HE 100D. 62". .60s $10.00 bird back down on the tarmac. We dead. I had to taxi back to the flight line. 64 Page m u i i m 1· Up to $8.00 add $1.50. $2.00 PP/lst Class looked things over pretty good, and The Cherokees saw that I wasn’t taking $8.01 to $20.00 add $2.25. A copy will be sent found the following had happened: an off, so they came back. My buddies in $20.01 to $45.00 fldd $3.00. free--when requested- $45.01 to $70.00 odd $3.50. with wn order.______electric oil temperature gauge had the two Pipers headed on as planned. and over $70.00 odd $4.00. HOBBY HORN shorted out when the master switch was Obviously, I was going to spend a few CA Addressees itdd 6% tax. ••hobby specialties·· Send MO. Visa/MC(#+Exp.) 15173 Moran Street |B] turned off. When I turned it back on, my hours in Sidney trying to solve this latest or Check (allow up to 30 P.O. Box 2212 radio took it in the shorts because of the glitch! Fortunately, there was a young days for check clearance.) Westminster, Ca 92683 COD=Exact Charges ♦ $1.50 (719) 893-8311 extra voltage the battery had from the mechanic available who was able to help HdL (Cash Onlv)(AU UPS) i ti a» aac- i jnt excessive charging. In retrospect, I me out with this dilemma. Of course, he should have had my radio off so that this was younger than my plane was old . . . staying at the dorms. I had written to the would not have happened. this gave mepauseforthought. Bellancas dorms long ago, but they had been filled Secure after checking all systems, we with Franklin engines aren’t seen that up. We had other choice except to stay took off again. By this time our buddies often by the more modern mechanic. in a private home . . . even the motels in were a bit concerned as we were too After several hours, he was unable to town had been filled! We were given the busy to let them know what was going pinpoint the actual cause of the demise second floor of this home, and we had on. Once airborne, we were able to of the left mag. After much checking the run of the house just as if it was our explain what had happened using my and head scratching, he called a friend own. The lady who owned it was superb second radio. The plan had been to of his to give an assist. and quite a hostess. Even Bill Stroman meet in Rock Springs, Wyoming, and to As it turned out, of all places, Sidney and a friend of his joined us Saturday spend the night there. Rock Springs is has a technical school where they rebuilt evening on. Needless to day, we had not an airport you want to take off from all kinds of airplanes and engines! So, many sessions in the wee hours, talking in the afternoon. It has an elevation of this friend of his, I suspect, wasone of his about our favorite subject. 6700 feet with temperatures in the high former teachers from this school. The next five days after our arrival eighties and low nineties, which is not Finally, they isolated the problem. It were absolutely heavenly! Five full days conducive for quick or safe take-offs. turned out to be a bad coil. and nights of airplane mania! There We were picked up at the airport and It wasn’t until 10:30 a.m. in the next were airplanes, airplanes, airplanes ... driven to a nice motel where the nine of morning that we were able to take off all sizes, shapes, ages, some very fast, us had an enjoyable dinner and bull once again. The weather in Sioux City others very slow, and many in between. session. was not good at all, so we had to divert to Civilian aircraft of all kinds were dis­ The next morning we departed with Lincoln for our next scheduled stop. We played as were the beautiful war birds! little difficulty, and we all headed for our did see numerous lightning strikes, but Surprisingly, there were about 300 less next fuel stop, Sidney, Nebraska. En- fortunately they were way off in the registered planes than last year, but route, I noticed that the left cylinder distance! attendance was up again, somewhere head temperature gauge was reading Waterloo, Iowa, was our last fuel stop around 825,000 people attended this too cool. Now what? before going on to Oshkosh. Soon after most incredible week at Whitman Field. Wyoming is relatively flat on the route taking off, we were all talking back-and- There was no question that variety in we were taking, but it is quite high above forth, when out of the blue comes the both the experimentals and the antiques sea level. Laramie,for example,isaround voice of one of my friends in the Super was lacking. The lower powered air­ 7,000 feet. Cheyenne is around 5,000 Cruiser. How could this be? They should planes were much in evidence like feet, even Sidney is about 4,000 feet. We have been in Oshkosh by now. Luscombs, Aeroncas, Cessna 120s and landed, fueled, and received the greatest Well, as it turned out, the weather had 140s, et a/, with few of those lovely radial hospitality imaginable! deteriorated so much that they were not powered oldies. Regardless, it is a Located on the Sidney field was a able to depart Sioux City until late the magnificent experience. flight service station where we were able next day. Surprisingly, we all arrived at I talked to so many people about to get the latest weather enroute to Oshkosh about the same time! Bellancas and Franklin engines. One Sioux City, which was our next over­ This year, for the first time, four of us gentleman from South Africa was restor­ night. The weather was not great, but it stayed in a private home instead of ing a ’46 Crusair from a basket case. DECEMBER 1983 WHEN C ONI ACTING ADVIKIISFRS. TEll ’EM M O D fl BUILDER SEN! YOU! 91 covered trailer. The closer I got, the only problem that I can foresee is some more I was convinced that this was a darned fool trying to set them with the KIMBROUGH model airplane. I could see through the engine running. fabric, and see the model-like structure. Will I buy another four-cycle? You PRODUCTS As it turned out, it was an ultralight of a bet! I understand there are a couple of SERVOSAVERS TRANS-GRIPS Piper Cub. It was powered by a Cayuna other high power, low weight .90 and s e r v o a r m s A d i f f . gears engine, and had room for a single pilot. 1.20 types coming onto the market. I will I commented to the owner/builder probably have to sell the kid’s dog to get how much it resembled a model. He the money to buy another engine but rep lie d that he had taken the Balsa that’s the price of progress! · U.S.A. quarter-scale drawings of the ACCESSORIES Cub and scaled every dimension three 1430 E.ST. ANDREWS PL.UNITE. times. It worked! I wouldn’t be surprised R/C Boats. . . Continued from page 51 SANTA ANA CA.92705 to see it sometime in the quarter-scale PHONE 714 557 4530 meet in Las Vegas. There were many other incidences Prototype versions of the engine (push­ DEALER & DISTRIBUTOR that made our five days seem like five ing outriggers) have set straightaway INQUIRIES WELCOME hours! The new museum was very im­ records of just over 90 mph. The intro­ pressive, and is located handily on the duction of the K&B .67 will mark the first Believe me, his problems are numerous! field. This was another highlight, but time in many years that an American In his country, he does not have as much space doesn’t permit going into that. manufacturer has attempted to produce latitude to do many of the things we take We had planned to depart on Wed­ a .60-size marine racing engine. I’m not for granted here in our country. nesday morning, but like all other an expert on the history of American Each afternoon there is q uite an previous trips, the weather decided made model racing engines, but it might airshow, and this is an opportunity to see differently. It wasn’t until a bout 1:30 p.m. be that the last American made .60-size the war birds really perform. The sights that we were finally able to depart racing engine was the McCoy 60 series. and sounds of these machines are so Oshkosh. Fortunately, the trip home was Maybe one of you model engine fanciers impressive that one longs to experience uneventful and very pleasant. We finally can set me straight on my facts. It will be the thrill these pilots must get from arrived at Corona on Friday afternoon a interesting to see how the new K&B .67 flying them. It is difficult to say which bit weary, but with the best of memories! fares during the 1984 competition sound better, a powerful radial in a P-47 How would I compare this trip in the season. or the Merlins? I love them both. Bellanca to the ones in the Charger? For There is no release date even set for Usually, after the war birds flew, we one thing, it was 10 hours quicker one the proposed K&B .67 Outboard. The would take that time to visit the buildings way than in the bipe. The Charger prototype of this engine was first run in where there were many vendors selling definitely provided more excitement, mid-1983, and also demonstrated in an airplane paraphernalia. It is mind bog­ and I’m glad that I had the experience of exhibition run at the “ B.C. ’83” contest. gling . . . the amount and variety of stuff flying a biplane that far. However, I do The .67 power head can be adapted to fit that we airplane nuts would buy if not plan to fly the Charger to Oshkosh on the 7.5 outboard’s lower end. Jack money was no object! again .. . that is, until I have three other Garcia ran the prototype on a Prather 35- Beside the vendors inside the build­ Chargers go along to keep me company. inch Tunnel using dual servos on the ings, there is what is simply called, the You see, I have three friends who are rudder control. The engine was swing­ Fly Market. This is similar to the most presently building them! · ing an Octura X-455 without any prob­ familiar swap meets which are so com­ lems. If there is a problem with this mon these days. There are bargains, and conversion, it would appear to be the there are bargains. It's one good deal Pattern...... Continued from page 36 area of noise level. The .67 outboard that after another for those in the market for Jack was running was hitting 100 dbs on all the necessities required for building plus the weight of the “ m uffler” caused the meter. This is higher than the or restoring airplanes. What a guy the pipe to loosen and beat the alu­ N.A.M.B.A. noise lim it of 95 dbs. It may couldn’t do with a bankroll and a truck minum washer to pieces. We also had to take some reworking of the lower end to load up all of the acquisitions!! replace the set screws in the muffler. exhaust to bring down the noise level to Interestingly, among the forum tents Our "fix ” was to shorten the stainless acceptable limits. were displayed the latest general avia­ steel exhaust pipe and replace the HOW ARE YOU DOING tion airplanes from Mooney, Beech, aluminum gasket with a copper gasket. ON YOUR “ PBs” Piper, and Cessna. To be honest with This setup seems OK for now. My PBs? What’s Dunlap referring to, you, these are great planes for those As maintenance is a necessary part of my powerboat? who like this type of machine. I just running an engine, we looked for an Anyone who might be into running don’t happen to get heart palpitations easy way to really flush the crankcase. So knows that PBs has nothing to do with a when I get around these airplanes. A far, we have found that using a pres­ type of boat and everything to do with friend of mine went over to a Bonanza surized can WD-40, or similar product, “ personal best.” Most of us involved in which probably had everything you can and spraying it into the crankcase vent model racing tend to think in terms of hang on such a plane . . . including air will work well providing you loosed the how well we did when competing conditioning. The cost was a scant screws on the cam shaft cover to eli­ against others. Our measurement of $246,000!!! I couldn’t believe it! minate pressure buildup in the crank­ success at contests is based on how well If I had the money to buy one of these case. Be careful in tightening these small we performed compared with the per­ luxury toys, I would rather have a screws! formance of other participants in the Staggerwing Beech, a Cabin Waco, What’s needed is another breather event. You win races by beating the Bellanca, T-6, umm . . . what else? You (vent) so that you can flush the entire other contestants. There’s no argument would still have money left over to build crankshaft area. Any convenient place about that. a hangar to house all of the airplanes in. should work. However, maybe you need to begin Oh well, it’s fun to imagine. With prices That nasty old nitro and alky will draw thinking about another type of winning. like these, it isn’t too hard to figure out moisture like honey draws flies, and the This type of winning has to do with why there is so much interest in home- only way to prevent rust is to use a water beating yourself. No, I’m not talking building and in the ultralights. displacing lubricant faithfully each time about self-abuse here. I'm referring to One afternoon I was headed toward you use the engine. This problem is not your PBs or personal bests. Think about the Classic area, when in the distance I peculiar to a four-cycle engines of this for a moment ... Very few model saw what appeared to be a giant model course! boaters will ever set national records, airplane being unloaded from this Adjusting the valves is easy, and the but every model boater establishes a 92 MODEL BUILDER personal record when he, or she, races on a standard, measured course. How • 6 CHANNEL RECEIVER* many of you racers know your best times • 4 MIDGET SERVOS (NES-1 A) for each of the classes you race? I’m talking heat racing times, not straight­ • 500 MAH SQ. BATE (SANYO) Novak away, as more heat races are run than • AILERON EXTENSION ELECTRONICS straightaway events. I was surprised • M IN I SWITCH HARNESS when I posed this question to some of the members of the local boating club. Most of them never even thought of keeping track of their times in a race. I know each of my personal bests because it is a measure of my progress or regression. At the last contest I entered, I turned in a 1:44 clocking with my 7.5 tunnel. That this time was eight seconds off the record is not as important to me as the fact that it was four seconds faster than I’d ever completed a heat with this boat. On this particular day, I lowered 00 my personal best twice in the 7.5 Tunnel $175 class. I was more excited about doing that than I was about winning first place in the class. The 1984 racing season will soon be Futaba/compatible plugs. Matches all modern TX. Plug-in crystal included. here. I would encourage you to begin ~^Spocify Frequency. Add S2.50 UPS, Calll. residentu add 6%. Allow 3-4 w e e k s fo r checks Send 9 Ά x 11 V> SASE lor tree brochure thinking in terms of your own PBs. A VISA 2709-C Orange Avenue, Santa Ana, CA 92707, (714) 549-3741 very realistic measurement of achieve­ ment in this hobby is how you are doing with your PBs. Each heat presents you difference between detailing a model with the opportunity to set a new and decorating. 30"PACIFIC ACE personal best. There are many races Although items like photos of the when, by the time I get to my last heat, original, information about the original about the only thing I can win is a race ana the model, boat trailers, and at­ against myself. This can turn a basically tempts of make a pleasing display are meaingless heat into a new challenge. not supposed to be consided when Co for it. Whadaya got to lose? judging the model, such efforts cer­ IT’S SHOW TIME tainly enhance the appearance of the The lead sounds like an endorsement model. There is no doubt that it takes a for a cable television network. Actually, certain amount of skill and talent to it has to do with something that many of create the interesting displays that help set off the model. Knowing that you This is a complete kit. Which us have an opportunity to participate in includes printwood, slripwood, during the winter, and that is R/C shows. have done your best to make your wheels, rubber,propeller, and Many of us enjoy displaying our handi­ model ready for a show can be very real Japanese tissue. work at model shows. It gives us an rewarding in and of itself. If you happen Price $7.50 Plus $1.50 for S&H. opportunity to compare our building to win an award for your efforts, all the better. SEAGLEN MODEL CO. skills with other modelers. Let me state Box 123, Plympton, MA 02367 right now that I'm not a real gifted SPEAKING OF R/C SHOWS. . . The Third Annual Northwest Model modeler when it comes to winning awards at R/C shows. I did, however, Exposition is scheduled for the Western known by their color. I met with REP at manage to win a third place award in Washington Fairgrounds in Puyallup, Cannes, in the home of painter Foujita, one of the boat divisions at the North­ Washington on February 4th and 5th. and he told me he painted his planes west Model Exposition a couple of years The event is now recognized as one of with transparent dope. Thus, the cloth back. That there were only three boats in the “ biggies” in national R/C shows. itself was red. the class will give you some indication as Actually, it is more than just an R/C "The planes of these times, Farman, to why and how I won that award. show. Trains, control line, free flight, Santos-Dumont, and Blériot were un­ At the 1982 Northwest Model Expo­ and plastic models are included along colored. Their color was the one of the sition, I took photos of boats I felt with all R/C aspects of the hobby spec­ linen; that is neutral, becoming some­ looked good. Most of them won awards trum. The event is sponsored by the Ml. what white by going old. This is all I in their divisions. Getting ready to Rainier R/C Society. Admission is free to know about this ‘heroic’ period. I hope compete in an R/C show can be much those entering models and only $2.00 for my modest knowing will help. ..” more time consuming than getting adults wishing to view: “ A fantastic It certainly does, Jean, and we thank ready to enter a race. The winning boats display of all types of models from you on behalf of model builders every­ had some common qualities. Those Peanut Scale to Giant Scale.” That quote, where. enterting their models for judging incidently, was from the NME promo­ THE GOOD OLD DAYS? should consider these items. tional flyer. Jack P. Swaney, of Las Vegas, Nevada, The winning models paid attention to Jerry Dunlap, 119 Crestwood Dr. S.W., feels that vintage model kits have been detail. I have included some photos of Tacoma, WA 98498. · remembered with rose-colored glasses: cockpits and engine compartments “ The thing that always turned me on which give an indication of the intricate were the radial engines, instrument Hannan...... Continued from page 49 work that can be done on model race panels, and insignia simply printed on boats. This type of attention to detail the plan with the legendary caption, gains points on the scoring sheets used G3 or G4 pilots. ‘Cut from plan and glue in place.’ by the judges. Attempts to replicate "I point out nevertheless an excep­ “ Golden Age? Not really. Those old reality always attract attention. A person tion; REP (Robert Esnault-Pelterie), kits were scale and engineering mon­ entering an R/C show for the first time whose planes were covered with red strosities, little more than caricatures of needs to be cautioned that there is a cloth. The REP monoplanes were well- the real craft. I once tried to build a 12- DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU' 93 Let’s say you have a Heli-Boy. It will fly fine at a main rotor rpm of 1200,1400, or YES-SIR, YES-SIR, THREE BAGS FULL! 1600. These are the three basic rotor speeds of the novice, intermediate, and 4 . ™ A M o VU expert levels. The more you look at it, the more sense it w ill make, just looking at rotor rpm, a helicopter running 1200 will have 3/4 of the rotor speed of a ship at 1600, and it’s fairly safe to say that the overall response time will be that much , 5 / i / n e . řJun&ETR. o r rL/>AJS-s*/nc. P nce. / slower too. After all, the speed of re­ sponse time is directly proportional to WALT JiOONEY NOW OFFERS 4 BAGS OF PEANUT SCALE PLANS the control inputs, and a rotor spinning ALL WELL TESTED DESIGNS, AT ONLY fS.OO EACH at a faster rpm will have more inputs EACH BAG FEATURES FOURTEEN PEANUT PLANS, (hence quicker response) in a given ONE OTHER, PLUS PHOTOS AND INFORMATION period of time. Notice that the control authority will still be there in each heli­ SENO tl.0 0 FOR COMPLETE LISTING AND SAMPLE PLAN TO: copter. The one with the lower rotor WALT MOONEY, 2912 CABRlLLO MESA OR rpm will be slower and smoother in SAN OlEGO, CALIFORNIA 92123 response time, yet still have control authority, just what the beginner is looking for. pioneers was Traian Vuia, a Romanian To give you a few examples of how this experimenting in France during the works, I’ll draw from my own experi­ FLEX-OFF early 1900s. In 1960, he succeeded in ence. In the fall of ’74 dad and 1 learned making several short flights with a flying how to fly on the Kavan Jet Ranger. We FLEXIBLE METAL EXHAUST TUBING wing of his own design. This remarkable did this indoors in a local gymnasium craft featured variable incidence for where blowing wind and cold tempera­ • LIGHT WEIGHT GALVANIZED STEEL control, and a four-wheel undercarriage. tures would not bea problem.The initial « EASILY BENT, WILL HOLD IT"S SHAPE • FUEL PROOF-NOT EFFECTED BY HOT However, its most unusual feature may setup of the Jet Ranger was with a main EXHAUST OR HOT FUELS have been its powerplant, a converted rotor speed of under 1,000, or a tail rotor ■ WORM DRIVE CLAHP INCLUDED • WEIGHS ONLY SLIGHTLY HORE THAN Serpollet steam engine, adapted for use speed of 4,600 to 4,800. Any of you RUBBER OR PLASTIC TUBING with C O 2 Although running duration familiar with the Jet Ranger will realize was short, perhaps three to five minutes, that this is slow. However: this gave us

-SIZES TO F IT HOST HUFFLEAS- output was about 20 horsepower, enabl­ more time to follow the ship’s move­ No. I06F0 1 /2 » d l M 12·· 5 .7 5 ing a large diameter propeller to be ments and correct without overcontrol­ Ho. I07F0 5/8» Ola.X 12» 6.00 Ho. I08F0 3/V* dl«.X 12» 6.25 turned. Although Vuia’s flights were ling too much. We had a good cure for Ho. I09F0 7/8» 01·.X 12» 6.50 brief (the best distance covered being 24 altitude control too. We set the throttle meters), they preceded those of the so only 3/4 to 7/8ths of the throttle bar­ TATONE PRODUCTS CORP. 1209 Geneva Ave. San Francisco, Ca.94112 Santos-Dumont 14-bis canard, and were rel would be open at full stick. Essentially 415 334 7189 made in full view of other experiments, this gave us enough power to hover in thus doubtless served to inspire them to ground effect. Anything over four to five inch SPAD that was physically impos­ greater efforts. feet was impossible, it w ouldn’t go any sible to assemble. The top wing drawing The Vuia is still in existance in the higher! So we both learned how to fly didn’t jibe with the rest of the layout. I collection of the Musee de I’Air near inside with this setup. still have the original plan after 45 years. Paris, and thanks to Michel Benicou, After we were competent with hover­ Many suspected in those days that some editor of le fanatique de L’AVIATION, ing. takeoffs, and landings, we pro­ manufacturers never actually built a we have a fine photograph of its “ cock­ gressed to the outdoors on calm morn­ sample model from their own kits ... p it” . Note the tubular steel construc­ ings and evenings. We quickly learned THEYWERE R/GHT/” Rebuttals, anyone? tion, wicker seat, and steering wheel what worked very nicely indoors didn’t THE C O 2 SCENE type control. have the control response for outdoors, Bob Davis, working in conjunction PARTING SHOT so rotor rpm was increased and we with Bill Brown has developed a C O 2 Robert T. Smith, former Air Force pilot brought in all of the throttle barrel’s conversion kit for the Cox .020. The and author, has recently published a movement at full stick. This gave quicker concept is to adapt these easily available book entitled. Building & Flying Rubber control response to fight the wind gusts engines to the quiet, clean, and easy Band-Powered Airplanes, and we par­ with cyclic as well as collective. But I’m starting characteristics of CO>. Capable ticularly enjoyed this gem from it: getting ahead of the story, back to the of turning an eight-inch diameter pro­ “ Aerodynamic laws were made by rotor speed examples. .. . peller at about 6,000 rpm, the conver­ M other Nature and discovered by man To get more specific, here are the sions open up new possibilities for — not the other way around, as some three basic setups, assuming that the School-yard Scale. Offered as acces­ engineers believe!” · helicopter will hover at 3-1/2 to 4-1/2 sories are an assortment of items includ­ degrees of pitch and top out at approxi­ ing various size on-board C O 2 tanks, mately seven degrees of pitch. filling devices, multi-tank manifolds, Novice: Choppers .... Continued from page 45 and charging cylinders. These are avail­ Rotor rpm: 1200. able in both disposable and refillable Swashplate travel: Roughly half of varieties. A stamped, pre-addressed fixed pitch ship) to learn on. Their total throw. envelope will bring you complete de­ simpler nature will allow better training Collective pitch range: 0to+6degrees. scriptive literature: Davis Diesel De­ with little initial experience. Conversely, Tail rotor: Sensitivity as desired, al­ velopment Inc., Box 141, Milford, CT if you live in an area with some compe­ though usually the novice will want 06460. tent pilots whom you trust, go with a a fairly soft response at first. When responding to mentions in collective pitch machine and have them Intermediate: Model Builder, please tell them where set it up as I'll describe. This will give Rotor rpm: 1400. you saw it, we can always use additional more flexibility in the long run as you’ll Swashplate travel: Half to three- advertising! be able to use one helicopter to progress quarters total throw. FULL-SIZE C O 2! through several different learning Collective pitch range: -1 to +7 de­ One of the the lesser-known aviation stages. OK, back to rotor rpm theory. grees.

94 MODEL BUILDER Tail rotor: Sensitivity as desired. Expert: JOHN POND ANNOUNCES R o to r rp m : 1400 to 1600. Swashplate travel: Half to three- quarters throw on low rate, full THE FIRST VOLUME OF A NEW AND throw on high rate. EXCITING VINTAGE PLAN ALBUM. Collective pitch range: -2 to +7 de­ grees. THIS ALBUM CONTAINS WELL OVER Tail rotor: Sensitivity as desired. IOO REDUCED FLYING SCALE PLANS You can see that the slower rotor rpm of the novice will not quite get him in DISPLAYING MODELS FROM AA TO the main power curve of the engine, so ΔΖ. THIS IS A LIMITED PRODUCTION he has to ru n slightly less to ta l c o lle ctive throw to compensate, which gives him a AND YOU ARE URGED TO ORDER softer collective feel. W ith intermediates YOURS AS SOON AS POSSIBLE. and experts, the rotor rpm is smack in the middle of the engine’s power curve, $ 24.95 RP. so they can run seven degrees of pitch at JOHN POND OLD TIME PLAN SVC. PO BOX 3215. SAN JOSE, CA 95156 the top end. If any of you read the "Chopper Chatter” (March ’81) on collective pitch, you’ll understand that the low end of DALOTEL - TIPORARE - C.A.P.21 collective pitch will determine overall crispness in flight, and that the expert’s 750 setup will be the quickest and maintain the most constant rotor rpm. For those 5&K .· 825 of you who haven’t seen that issue, it’s highly suggested reading. I just thought of another important aspect of setup. Most of you out there won’t have a tachometer to check blade AMA or FAI speed, but there's a fairly easy guide to OUR DESIGNS ARE IN get in the general area. The novice blade COMPETITIVE AIRFRAMES speed will sound “ slow” ,engine will run for THE WINNERS CIRCLE at a fat two-cycle and four-cycle once in PATTERN FLYERS 1978 - 1983 a while with the engine blowing lots of KITS OR AIRFRAMES DICK HANSON MODELS smoke. The intermediate blade speed BUILT TO ORDER 5269 LUCKY CLOVER LANE WRITE OR CALL will sound “ just right” , the engine will MURRAY. UTAH 84107 FOR INFORMATION PHONE (801) 261-1402 run at a fat two-cycle all the time, and will blow noticeable white smoke. The expert blade speed will sound “ high” or tricky to measure. I’ve never measured include electronic mixing, make extra “ wound up” , it will give you a slightly swasnplates in degrees, I just set it up by sure that everything works together. It’s scared feeling, the engine will be run­ relative travel and eyeballing it. so easy to have thethrottleandcollective ning at a noticeably higher rpm, and it SETUP OF TAIL RO TOR working properly with the tail rotor will be blowing fairly light smoke. I As various main rotor speeds and col­ mixing backwards! know you have to have some exposure lective settings vary torque, the tail rotor Some of you will be running gyros on the tail. If so, a 1,000 mah battery pack is to running helicopters toget the general will have to run more pitch to compen­ idea, but it doesn’t take long to get it. sate for torque at slower rotor speeds, highly recommended. A gyro running and less pitch at higher rotor speeds. o n a 500 m ah pack a lon g w ith th e ra d io SETUP OF M A IN ROTOR After a while you can easily eyeball tail will run down a fresh pack in as little as Obviously, the degrees of main rotor rotor pitch and get very close the first three or four flights. pitch you run will influence the blade time. On a clockwise main rotor, if the Well, it looks like I’m out of space for speed. An average setup for a Heli-Boy nose goes left, increase tail rotor pitch, if this month. Next month I’ll pick up at or C o m p e tito r at near sea level w o u ld be nose goes right, decrease tail rotor pitch. this point and describe the trimming 4-1/2 degrees for novice, 4 degrees for On counterclockwise main rotor sys­ process and a little bit more of the intermediate, and 3-1/2 to 4 degrees for tems, if the nose goes left, decrease tail philosophy of learning how to adjust expert. These pitch settings are only rotor pitch, for nose right, increase tail your helicopter to keep up with your relative guidelines as many other vari­ rotor pitch. It’s important that you know progression. Hope to see you then. · ables influence where the helicopter which way to make trim changes before will hover and at what blade speed. you go out and fly. In the heat of making Some variables are: The helicopter’s adjustments the first couple of times out, BIG Birds .... Continued from page 23 weight; relative humidity; feet above it’s very easy to tweak tail rotors the sea level; high o r lo w pressure in the air- wrong way. In fact, it’s easy to do it back­ mass where you are flying; and the con­ wards most anytime. . . . relatively flat wings . . . and Rudy Arns, dition of your main rotor blades. R A D IO SETUP of St. John, Newfoundland, was one of CYCLIC SETUP All trims should be neutral and swash­ the many to offer a better way ... a flat Initial cyclic setup should be with the plate actions should be double checked sup po rt. swashplate at 0-0. Then, if you are flying for correct reaction and proper throw. Rudy says, “ I have a C hevy van, and a clockwise rotor, tilt the swashplate a As collective pitch is increased, blade instead of using wing slings, I made two degree or two to the right, and vice versa pitch should increase and the throttle hardwood laths with flat aluminum ends for counterclockwise rotors. This will must open up. If you are running screwed on as shown in the sketch. I help compensate for translating ten­ mechanical mixing, the tail rotor pitch covered the hardwood laths with a piece dency. For novices, using "half of swash­ should increase as you add throttle. For of carpet, and the aluminum ends fit plate throw” will work nicely, you can clockwise rotor systems, left tail rotor down inside the structure of my van. always increase or decrease throw a little will decrease pitch and right tail will in­ Wings slide in and out with no worry, if you want to. Some manuals will give crease pitch. and the laths can be put in and taken out swashplate throw in degrees, but it’s On the special helicopter radios that at will. I’ve carried two Citabria wings

DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU1 95 break). However, everyone had one STATEMENT OF OWNERSHIP idea in common ... to use foam or MANAGEMENT AND CIRCULATION carpet remnants to cushion the wood (Required by 39 U S.C 3685) COVERUP! with. Rudy didn’t specify what thickness 1 Dalo of Filing September 19. 1983 2 Title of Publication MODEL BUILDER MAGAZINE aluminum, but I’d imagine that some­ 3 Frequency of issue Monthly Sturdy, high quality, rich dark thing about 3/32 or 1/8 in. would be 4 Location of known office of publication (street, city green vinyl-covered binders for needed to support the weight of a county, state, zip code) 621 West 19th Street. Costa Mesa Orange County. CA 92627-0132 your valued copies of MODEL number of wings. I like the flat support 5 Location of the headquarters or general business BUILDER Magazine. Gold let­ idea; it is an improvement over the offices of the publishers (not printers) 621 West 19th nylon sling, so I'll probably switch over Street. Costa Mesa. CA 92627-0132 tering on spine and front cover. 6. Name and addresses of Publisher. Editor and shortly. Managing Editor BUFFALO RENEGADES Publisher W.C Northrop. Jr. 621 West 19th Street. From B uffalo, Texas, com e th e "R e n e ­ Costa Mesa. CA 92627-0132 Editor W C Northrop. J r . 621 West 19th Street. Costa gades” (also known as IMAA Chapter Mesa. CA 92627-0132 132 amongst the more genteel folks), a Managing Editor NONE somewhat surly but redoubtable bunch 7 Owner RCMB Inc Wm C Northrop. Jr . President Anita Northrop. Treasurer. 621 West 19th Street. Costa of native Texans (all four of them), who Mesa CA 92627-0132 are hot to trot. Led by "Grisly” Randy 8 Known bondholders, mortgagees and other security holders owning or holding 1 percent or more of total Getchell, who holds the record for club- amount of bonds, mortgages or other securities NONE defecting, these “ natural’’ Texans were 11 Extent and Nature of Circulation initially thought to be a tad on the vain­ Actual glorious side . . . but they have proven Average no copies that they don’t just run off at the mouth no copies of single by successfully flying Carroll Cheek’s each issue issue during published half-scale PÄber Pixie on the very same preceding nearest to day that the IM A A g ra nted th e m cha pter 12 months filing date status. “ Grisly” Getchell, who’s a medi­ A Total No Copies Printed 58.254 64.495 (Net Press Run) cally retired airline pilot and has made “ Renegade” synonymous with “ Robin B Paid Circulation One Binder ...... $5.95 Hood,” gave this purely objective eye­ 1 Sales thru Dealers and Carriers. Street Vendors and Three Binders . . . $15.95 ball account of the happening.. . Counter Sales 40.467 46.684 Five Binders .... $25.95 “ W e h a ve completed the initial 2 Mail Subscriptions 14.793 15.287 m aiden (flig h t) of Carroll Cheek’s 1/2- (For more than 5, include C Total Paid Circulation 55.760 61.971 scale Pober Pixie. The bird spans 15 feet $5.00 for each additional and weighs 49 pounds "wet" (Carroll D Free Distribution by Mail. Carrier binder.) or other means Samples. missed the estimated gross by one Complimentary and Other Shipping: Binders shipped in US. p o u n d ). The flight was F A N T A S T IC ! Talk Free Copies 879 12 about scale flying! W ow! by UPS only. For one binder, add E Total Distribution “ She’s powered by an American (Sum of C and D) 56.139 61.983 S Z 00. F o r each additional binder', Seventy, and we used a Crish 24-10 add 75c. F o r hinders shipped o u t­ w h ich p e rfo rm e d great. O n static ru n ­ F Copies not distributed 1 Office use. left over, unaccounted, side U.S. add S3.50 for one bind­ ups, Carroll was measuring 37pounds of spoiled after printing 479 524 er. For each additional binder, add thrust. The entire airframe is built of 2 Returns from News Agents 1.636 1.988 paneling material, spruce, redwood, S I . 50. F o r A ir M ail rates overseas, G Total (Sum of E and F — should etc., with the cabanes and gear welded 58.254 please inquire. equal net press run shown in A) 64.495 up with chrome-moly steel tubing . . . PLEASE All payments must be in U.S. and the gear is fully articulated and I certify that the statements made by the above are correct funds, drawn on a U.S. bank. and complete Anita Northrop. General Manager functioning. It works just great! The California residents add 6% Sales Tax covering is Worldtex which has been painted orange and white with acrylic the least, a delightful gross weight. No MODELS' lacquer. w o n d e r Randy was o ve rco m e by th e way ” 1 still can Ί get over what a sight it was. this BIG Bird lightly to u ch e d d o w n o n all BUILDER I ’ve got to say that this has to be the most three points; with a wing loading in the 621 West Nineteenth St., Box 10335 realistic m o d e l in the air that I have ever low twenties, she couldn’t have been seen; it even surpassed that BIG P-47 we anything else but light and nimble on Costa Mesa, California 92627-0132 saw up at Cunningham’s Fly-In when I her feet. In fact, a BIG Bird with this kind met you there. There’s just something of wing loading should be able to (112 in.) and a Nosen P-51 w in g at the about a great, big, graceful model light- thermal very w e ll. . . and might encoun­ same time. Fuselages, of course, are plane easing around the sky! The land­ ter problems getting down out of one of stowed on the floor of the van.” ing was absolutely uuuuuumph! That those all-too-frequent Texas "hatsuck- Gotta tell you, gang, that at first I bigger gliding in at about 20 knots and ers.” So, anyone planning to build a wasn’t sure what Rudy meant by a "lath.” lightly tou ching d o w n on thegrasson all really BIG BIGGIE should follow Carroll His sketch seemed to indicate either three points was the icing on the cake. Cheek’s example and keep the wing something like a one-inch dowel or a Emotionally, it was too much to handle loading L-O-W. one-by-two Douglas fir strip. Of course, . . . but no one was embarrassed because We’ve seen too many "lead sleds” my ubiquitous American Heritage Dic­ w e all fo llow e d you r sage advice and turned out by guys who were supposed tionary once again saved the day, letting wore dark pants." to have had thesavvy and the craftsman­ me know that a lath could be a narrow, Getchell’s photo shows how big this ship. The fact that their creations pushed thin strip of wood or metal used to Pixie really is .. . and as you guys know hard on 100 ounces per square foot told make a supporting structure. Voila! I just by now, I’ve come down kinda hard on me they should have stuck to building learned something new! these BIGger ones ’cause all too often display models and hangar queens. A Anyhoooo, there were quite a few their wing loadings are disgracefully BIG airplane does not have to be a heavy sketches sent in, and all were pretty high. Why is it that the guys who get the airplane . .. and, in fact, sh o u ld n ’t be a similar. Some used large diameter hots to turn out behemoths are the same heavy airplane. If any of you guys want dowels, while others, like Rudy, used people who seem to have no under­ to know how Carroll managed to achieve something like fir strips (anything too standing or respect for wing loading? In such a dandy power-to-weight ratio, thin would tend to bow, and possibly this case, the Pixie’s 49 pounds is, to say write in and I’ll pass your letters on to

96 MODEL BUILDER him; I know he’ll be happy to answer any questions you might have. A lightly- loaded airplane is always a joy to fly! ZENOAH QUARTZ 2.28 CID 0^ JOHN POND The UPS lady just b ro u g h t o n e o f Ernie P ritcha rd’s (E&L M a n u fa c tu rin g , 8631 Old Time Plan Service East Laredo Lane. Scottsdale, Arizona 85253; (602) 941-0633) reworked Zenoah The largest selection of plans in the world at the most 2.28 engines to my door. Ernie, who’s reasonable prices. Each list $1.00 done some nice things to the Evra, is All 4 for $3.00 balancing the standard Quartz, advanc­ ing the timing to 30 degrees for optim um No. 14 OLD TIMER F/F GAS running, and increasing the compres­ No. 14 OLDTIMER RUBBER/TOWLINE sion ratio. Also, he’s replacing the No. 14 OLD TIMER FLYING SCALE A through K Champion RCJ-8 (or NGK BMR 6A) with No. 14 OLD TIMER FLYING SCALE L through Z a Champion RBL-8 .. . which he says makes the engine run better, and which New plans prices effective Dec. 1983 to Dec. 1984 I’ve discovered is fairly easy to get from P. O. B ox 3215 better auto supply stores. San Jose, Calif. 95156 According to Mr. Pritchard, this Phone (408) 292-3382 Zenoah has got the Quadra beat all the way around: it’s built better; has bigger and better bearings; a double-balanced Canada, is that indoor flying is alive and charge is $1.00. Send to: W.C. Hannan crank; sports an electric ignition; and well. The site is the local high school gym Graphics, P.O. Box A, Escondido, CA outperforms the Quad by a good 200 with a ceiling height of 18 feet. Most 92025, USA. rpm. W e'll see! Gonna try to have some­ indoor activity is through the winter with an undercambered airfoil on their thing definitive to say about it next months (freeflight and R/C glider takes FAI power ships. m on th . up the summer), and so the flight times I like this whole series of sections TIP OF THE MONTH are somewhat low. Flight times average; because they combine good power Everything east of the San Andreas 10 m inutes in Easy B. 31 seconds in hand- control with a really outstanding glide. Fault will eventually plunge into the launch. 1:05 in Bostonian, and 1:30 in This section could be used with either ocean! indoor scale. How do these times com­ D-box construction or fully sheeted Al A lm a n, 605 168th Street. East, Box pare with those in your area? construction ... in which case it would 95, Spanaway, WA 98387. Keep up the If you wish to correspond to Jim, write be useful for Rubber and Glider as well correspondence, gang . . . and don’t to: lim Holland, 7 Norham Rd., W inni­ as Power. It should not be overlooked as forget to let me know about any fly-ins peg, Manitoba, Canada R3C 2E4. a good, all-around utility airfoil. o r such so I can pass th e w o rd on to NEW HANNAN PUBLICATION BAMBOO THE BEAUTIFUL everybody else. Our own Bill Hannan has done it Many new and exciting model build­ FLY SAFELY! · again! It wasn’t enough that he wrote ing materials are coming on the scene that great Peanut Power book several every day. Now that we have 1/64 years ago, now he has come out with a plywood, boron filament, beadboard In d o o r...... Continued from page 59 new volume for scale buffs. My copy of foam, etc., we may tend to forget about Scrapbook of Scale, Three-Views and one of the most useful and versatile Nostalgia arrived the other day, and I modelling materials. It has been around its sound and size. immediately began to pore over its since mud was new, and I find more uses One of the biggest hangups is finding contents. This 56 page book contains 13 for it every day. Of course, I’m referring rubber small enough to power these three-views of such aircraft as the Blériot to the wood known as BAMBOO. machines. Mine flew on .015 Pirelli, 25 (I’m building a 30-inch model of this W ay back in the ’20s and ’30s, it was while Tony’s flew on a length of round, one for our big scale meet), Farman 451 widely used for rounded wingtips and grey rubber taken from a man’s sock (or Moustique, and the Cierva C.4 Autogiro. landing gear struts. Today, I use it for elastic thread). Construction plans include: Blackburn splints on broken longerons, for rear If you intend to build Mr. Avak’s “ All-Steel” monoplane, and the Pilatus rubber pins, and for connecting rods on flapper, I suggest that you build it twice Turbo-Porter Peanut, plus more. An my ornithopters. Now, I’ve found that the size of the plan, and then build it to article on the Backward Gee Bee and the it works great for flapper spars, also. the original size ... if you dare! Barnwell Monoplane are only two of the Bamboo has much greater strength FRENCH INDOOR PROXY CONTEST 17 included. The attention to detail is than balsa, and even more than most Recently received word of an indoor very evident in each article. modelling hardwoods. Sometimes a proxy meet to be held in Flemalle, I dare say that alm ost eve ryon e w h o is length of basswood is substituted for France. (Flemalle is near Paris, and is involved in scale modeling and full-size balsa, and later on it cracks due to situated on the left bank of the river aircraft and who scans the model maga­ angular or weak grain. D id y o u ever see Meuse.) The classes were Peanut, FAI/ zines, knows of the vast knowledge bamboo with bad grain or cross grain? F1D, FAI/F1D for beginners, Easy B, and which Mr. Hannan possesses. Only Well, neither have I. It is harder to sand Pennyplane. The ceiling height was 36 someone who dearly loves flying and strip, but that superior strength feet. The organizers of the contest were machines and anything pertaining to makes up for its faults. soliciting both proxy entries and in- them could command the respect and I taper the strip from 1/16 round to person entries from everywhere. The admiration that Bill Hannan does. It is 1/64 round (for flapper spars) by scrap­ information sheets even listed camping always a pleasure to read anything Bill ing it lengthwise with a razor blade or sites, hotel accommodations, and meal puts his typewriter to, and an even Uber Skiver knife. The wood is rotated as locations with prices. I hope that I can greater pleasure to know him personally. it is scraped. It can even be soaked in hot get the information in time next year to You cannot go wrong in the purchase of water and baked around a cardboard make it known to my readers who may this volume. I personally intend to form in a 300-degree oven to get curved wish to plan vacations there or send collect any books Bill sees fit to write, ou tlines. models to be proxy flown. The dates for and I hope you do the same. Great Where can you get bamboo for model the m eet w ere A ugust 19, 20, and 21, effort. Bill! building these days? How about your 1983. This 8-1/2 by 11-inch, 56 page book is local super market. In the oriental foods INDOOR FLYINC IN CANADA now selling for $8.95 directly from the section, you will find chopsticks large Word from Jim Holland of Manitoba, author. The postage and handling and small. In the picnic section, look for DECEMBER 1983 WHEN CONTACTING ADVERTISERS, TELL 'EM MODEL BUILDER SENT YOU 97 NEW ORDERING INSTRUCTIONS MODELS' Price includes 3rd or 4th Class mail. For Airmail or First Class in U.S., add 25% of total order. For Over­ BUILDER seas Airmail (includes Canada and Mexico), add 50% of total order. Remit by International Money Order All Full Size plans purchased from MODEL BUILDER or U.S. funds on Overseas orders. Postage paid for Magazine include a reprint of the construction article, if APO and FPO orders. Master Card or VISA accepted. building instructions were part of the article. Include card number, expiration date, and signature. SEND TO: MODEL BUILDER PLANS SERVICE Add 5% to credit card orders. Minimum order, $5.00 BOX 10335, COSTA MESA, CALIFORNIA 92627-0132 CALIFORNIA RESIDENTS ADD 6% SALES TAX

No. 883-0.T. FLYING MIDGET $4.00 Να 3832 CUTLASS II $3.50 No. 12831 NIEUPORT 11-C S9.00 Petrides/Abzug design from August ‘37 Foam-built flying wing R/C glider, based WW-I triplane for Standoff R/C scale, 4- M.A.N. For Brown Jr. engine. 49" span. on Navy carrier fighter. By Larry Renger. channel, two-inch scale. By FrankHoffer. No. 12832 FAST EDDIE $5.00 No. 7831 EPI-SUE $3.50 Να 3833 ARADO Ar 96V $3.00 05 Electric pylon/aerobatic plane in 29, A sport R/C pusher/canard for .20 to .29 Rubber scale low wing fighter. Is an ex­ 34, 38-in spans; 3-ch R/C. By Bob Sliff. engines and 3-ch. radio. By Dom Apikos. cellent flier. 18" span. By Tom Houle. No. 1283-0.T. KARASŮ S2.00 No. 7832 THE BIPE $4.00 Να 383-0.T. COLIBRI $4.00 Rubber powered, 19th century antique Hal deBolt's early post war control line From Sept. '39 M.A.N.. a single wheeled, from Japan;21 "span. By Danny Sheelds. kit bipe for .29 to .60 ignition engines. tw in -fin n e d A gas jo b by Louis Garami. No. 12833 VERVILLE AIR COACH S2.50 F/F Rubber Scale Golden Age high wing No. 783-0.T. KEANE ACE $2.50 No. 2831 REPUBLIC P-43 $11.00 monoplane; 26 in span. By Walt Mooney. Rubber scale low wing (22-1/4") light- Contest winning, large scale, pre-WW-ll plane fro m June '3 7 FA . Jesse Davidson. fighter. Quadra power. Col. A rt Johnson.

No. 11831 HAWKER FURY $12.50 No. 6831 PLATO $4.00 No. 2832 BUNKER BOAT $6.00 Classic British biplane in 1/4 scale, for A ll sheet balsa, 3-channel R/C flying disk Scale sea-going fishing trawler, R/C, elec­ Quadra or equiv. power. Don Prentice. for .15-.25 engines. From "60 Am. Mdlr. tric power, 36" LOA. Lashek & Smith.

No. 11832 FLYING FLEA $4.50 No. 683-0.T. CLASS C HAYSEED $6.95 No. 283-CP. COMET MONOPLANE $3.00 R/C scale model of original HM-14 'Pou H»-performance Cl. C Cabin ship. Contest A 36” span rubber cabin ship. One of de Ciel' Span 44". By Randy Wrisley. winner then, and now. By Carl Hermes. Comet's earliest By founder Bill Bishop. Να 5831 PLEASER $4.00 No. 1183-O.T. ARUP FLYING WING $2.00 Very simple, 46" span sport R/C aircraft No. 283-0.T. SHARK P-60 $3.00 Flying scale rubber powered model from for 05 electric power. By Stan Wilson. Rubber powered version of the famous Sept. '36 M.A.N. By Gordon Englehart. “ G-Line" series, 24" span. Vic Stanzel. No. 10831 RUSS. MISSILE BOAT $6.00 Να 5832 R/C COMET CLIPPER $5.00 No. 1831 ULTRA Mk IV $5.75 Missile-firing, scale Russian attack boat, Goldberg's rubber powered Clipper scaled Standard Cl. 3-ch. R/C electric sailplane OSA class. 2 or 3-ch. By Walt Musciano. to 54", for .09 - .15 R/C. Stu Richmond. for geared or direct drive. Mike Charles. No. 10832 CITABRIA $5.00 Semi-scale Citabria for 05 electrics. Span: Να 583-0.T. SHRIMPO S-3 $4.00 No. 1832 FINDRAGGER $3.50 54 in., 2,3, or 4-ch. R/C. By Stan Wilson. Sharp little 44-1 /2” span cabin gas model R/C .049 trainer or .10 powered aerobat No. 1083-0.T. WEDGY $5.00 from Nov. 1937 M.A.N. Malcolm Abzug. fun ship. Inverted fin. By Bruce Tharpe. "A " Nats winner in '40. Wedge-shape fuse, No. 1833 SICKLE $3.50 builds easily, 42 in. span. Leon Shulman. No. 4831 FRANKLIN SPORT $9.00 FAI Combat weapon. Curved wing, with Electric powered, 2-inch scale classic bi­ No. 9831 BUHL AIRSEDAN $4.00 cut foam forward section. Steve Fauble. plane for 3-channel radio. Bill Gilchrist. Unusual 049powered, 36" span, 2-3chan, scale sesquiplane from -28.By Jon McPhee. No. 183-C.P. TAYLORCRAFT $3.00 No. 4832 TEMPLETON MK II $1.50 Capitol Model Aircraft kit plans for 30” No. 9832 LIL' WHISTLER $5.00 Inexpensive 1/2A ukie sport racer. Build rubber scale. Shows ribs and bulkheads. 05 Electric powered fun plane. Span 42\' two from one 1/4x4 sht. James Martin. Aerobatic polyhedral design, Larry Jolly. No. 483-0.T. BELLANCA CARGO $3.50 No. 183-0.T. THERMALEER S6.00 No. 983 O.T. CORONET $5.00 Rubber scale cabin Aircruiser from July Beautiful streamline Cl. C gas soarer, 76" Class A or B cabin. Span 46.5", area 300 sq. ‘37 M.A.N., 32" span. By Joseph Kovel. Stinson gull type wing. By Dan Veronica. in. for . 10-size engines. Appeared in 1941. No. 12821 GRIFFIN III $3.75 No. 8831 NORTHROP N9M-A $5.00 Να 3831 ELECTRICUS $5.75 Scale flying wing. Twin 05 elec, power, Electric powered two-meter competition Mini full-house R/C sport aircraft, only 4-chan. R/C, 75-in. span. By Bill Young. sailplane, for 05 motors. By Larry Jolly. 28-inch span, .03 power. By Bill Cannon. barbecue skewers. In our neighbor­ son, 16052 Tulsa St., Granada Hills, CA . . . so the bunt serves to decrease ho od , a package o f 100 sells fo r 99«. Such 91344. · incidence momentarily until the model a bargain! Occasionally, you will find a has completed it transition. bamboo birdcage at a garage sale or Now, from the pages of the “ Bat- thrift shop for a couple of dollars. This Sheet” comes this version from Australia. Free Flight... .Continued from page 56 will net you enough bamboo for two or N ote: Bill Gieskieng, also mentioned on three years of building. Try it. You’ll like these pages re ce n tly, says that he b e ­ it. Oh, yes! It’s still good for wing, BUNT UPDATE: lieves the bunt system is not effective, or rudder, and stab outlines (very thin JOE SUPERCOOL’ S F1C “ BUN DT CAKE” at least not reliable for use on standard Some months ago, I featured in this F1C m odels. lengths, of course) for some models. column a brief bit about power model Anyhow, here's how this one works. As soon as I finish this, I’m gonna start bunt systems. The notion behind such The bunt and the rudder operate simul­ pouring some of that new microfilm systems is that as most power models are taneously about one-half second before solution obtained from Erv Rademsky at pointed straight up when the engine engine flood. This is different from the the Taft Free Flight Champs. W rite cuts, some manner of bringing the nose norm, where rudder usually operates comments and questions to Ken John­ down before the glide would be helpful a fte r engine flood. There are three 98 MODEL BUILDER Ace R/C, Inc...... 79 INDEX TO ADVERTISERS Satellite City ...... 104 Adventure Model C ra ft...... 88 Scan Am International ...... 70 Astro Flight, Inc...... 89 Seaglen Model Co...... 93 Bavarian Precision Products...... 71 Sig Manufacturing Co", Inc...... 4,5 Beehive R/C Model Aircraft Co...... 66 Kimbrough Products...... 92 Francis Smith's Ship Y a rd ...... 87 Dave Brown P roducts...... 77 K&S E ng in eering...... 62 SR Batteries...... 84 Byron Originals ...... Cover 2 Kraft Systems...... 81 St. C ro ix ...... 91 Bud Caddell Plans...... 84 Kustom Kraftsm anship...... 68 Super Cyclone ...... 85 Campbell’s Custom K its ...... 70 Lehmberg Enterprises ...... 83 Tatone Products...... 94 Circus H obbies...... Cover 3 Leisure Electronics...... 65 Technopower II, Inc...... 66 Jim Crocket R e p lica s...... 86 Midway Model Co...... 78 Teleflight Research...... 76 Du-Bro Products ...... 67 Midwest Model S u p p ly ...... 80 Top Flight Models, Inc...... 1 Electronic Model System s...... 64 Walt Mooney...... 94 Uber S k iv e r...... 100 Enya Model Products...... Cover 4 Sid Morgan Vintage Plans ...... 82 VL Products...... 82 FAI Model Supply ...... 74 Novak Electronics...... 93 Buzz W a ltz ...... 72 Fox Manufacturing Co...... 69 Nowlen Aero ...... 77 Wandit ...... 72 Dick H a n s o n ...... 95 Octura Models ...... 73 Williams Bros...... 68 Hobby H o rn ...... 91 Pacer Technology & W ilshire Model C e n te r...... 71 Hobbypoxy Products ...... 75 Resources, Inc...... 101 NickZiroli ...... 73 Ikon N 'W s t...... 76 Peck Polymers...... 78 Indoor Model Supply ...... 63 John Pond O/T Plans ...... 95.97 HOUSE ADS International Modeler Show ...... 102 Proctor Enterprises...... 80 Binders ...... 96 Jersey Metal Spinning ...... 90 Prop Shop, T h e ...... 74 Full-size Plans...... 98 Jomar Products ...... 86 RLF Products ...... 89 Limited Edition Prints ...... 103 K&B Manufacturing...... 83 Robbe Model S p o rt...... 3 Statement of Ownership ...... 96

CLASSIFIED ADS WANTED — OLD MODEL ignition engines, IMPORTANT INSTRUCTIONS: Non-commercial (personal items) rate is 25 cents per word, cars, etc Paying top dollar Bill Simpson. 7413 with a minimum of $3.00. Commercial rate is40 cents per word, with a minimum of $5.00. Via Lorado Rancho Palos Verdes. CA 90274 No advertising agency discounts allowed. (213) 377-3532 Name and address free, phone number counts as two words, abbreviations count as whole words and w ill be spelled out. WANTED Spark ignition model airplane All ads are payable with order, and may be for any consecutive insertion period specified. motors parls race cars. Circa 1930-1950 Send ad payment to: MODEL BUILDER, Classified Ads, P.O. Box 10335, Costa Mesa, CA Russell Stokes. Rt 1 Box 520. Keller TX 92627-0132. 76248

SCRAPBOOK OF SCALE by Bill Hannan OLD AIRTRAILS. Flying Aces, M A N . pulps, NORTHROP N9M FLYING WING Scale Twelve 3-views, photos, philosophy and etc for sale Write RJ Twohy. 24248 plans, photos Send $1 00 for information Bill whimsey $9 95 postpaid, or send SASE for Crenshaw 4103. Torrance. CA 90505 Young. 8106 Teesdale Ave. N Hollywood. descriptive leaflet W C. Hannan. Box A CA 91605 Escondido. CA 92025 BEER CAN BOMBERS — High performance hand launched gliders from lightweight OLD KITS FOR SALE Large listing includes aluminum beverage cans Two full-size Eagle Megow. Berkeley. H&F. Scientific. CUSTOM SPINNER attachment/prop nut patterns with illustrated fabrication and flying Veco, Bay Ridge. Enterprise, and others combinations, prop extension HP engine instructions Send $4.00 to: Beer Can Bomb­ Send $1 00 for list Ed Hilton. 1801 Father overhaul, parts Send stamp for information ers. Box 97. Southeastern. PA 19499. Ryan A ve, Biloxi. MS 39530 ROBINAIRE, Box 8770, Coral Springs. FL 33075-8770 ANTIQUE MODEL AIRPLANE KITS for sale: U/C. and solid scale Stanzel; Edco: Girard: P-51B SCALE DRAWINGS Accuracy guar­ Modelcraft, etc Send SASE for list Charlie anteed Four sheets 24 x 36: % in = 1 ft $15.00 NATS WINNING Bellanca Aircruiser, Senior rolled, postage paid SASE for details Charles Indoor and Outdoor Rubber Scale. Plans: Oehler. 13 Dogwood Dr. Smithtown NY 11787 Neely. 2703 E Goshen Ave Visalia. CA $1.50 Send SASE for list. David Aronstein, 50 93291 Pasture Lane, Poughkeepsie. NY 12603 € DECALS — 50 sheets, assorted scale and sport markings from discontinued U/C- R/C STANDOFF SCALE plans with construc­ RAZOR BLADES, single edge industrial first Rubber kit line — $3 00 postage paid T tion manual Curtiss Hawk P6E two-inch quality — extra sharp: 100/$4.25:200/58 00. Crouss. 100 Smyrna. West Sprinqfield. MA scale. $15 00. quarter-scale. 525 00 Stinson 3 0 0/S 11 75. 5 0 0 /$ 1 9 25: 1000/537 50 01089 SR9 two-inch scale. $17 50. quarter-scale. Postpaid in U S Cobbie's Gifts. Postbox 2. $27 50 Stearman PT-1 7 Iwo-inch scale. Deal. NJ 07723: (201) 922-9898 FACTORY SALE Ras Stik 25-40 fun flier. 51 - $21 00. quarter-scale, $35.00 All postage inch foam wing, balsa fuselage Sale price paid. Catalog $1.00 Richard Barron 11506 $24 95. or with two rolls Econokote (colors Ohio Ave., Youngtown, AZ 85363 FOR SALE — Cleveland Master kit of Turner- red or white only) Fox 36RC «23900. core Laird racer Kit made in 1939, $50.00. Also glue, fuel tank, wheels, motor mount: $79 95 TISSUE PAPER (Domestic) 20 'x30'" sheets, Berkeley kit of Aeronca C-3. 54 in wingspan. Only 12 left Handling charge $3 00, add nineteen colors. 20C sheet S.A.S E brings 525.00 Richard Simpson. 7230 Sharkon Ln . $2 00 for C O D GT Models. P O Box 869. sample of all colors Contact Bill Wilson, Box Stockton. CA 95210: (209) 478-2295 Rantoul, IL 61866. phone (217) 893-4136 8489. Lumberton, TX 77711,(713) 246-4177

Change of address notices must be received one MOVING? SEND NOTIFICATION FIRST! month before date of issue that new address CO 00 I co takes effect. For prompt service, old label MUST be at­ CO Attach old label here r Attach old label here tached. Post office will not forward copies unless you LU NAME I m pay extra postage. Duplicate issues cannot be sent. oc cc Q ADDRESS I D z MODEL BUILDER, Box 10335, Costa Mesa, CA 92627 Q —I Ω S NAME ______< CITY I STATE ZIP I < á : ------Q J g 8 ADDRESS. _ i Attach old label here Attach old label here \_ J S i CITY ______. ST A TE/ZIP. O

DECEMBER 1983 99 A GREAT CHRISTMAS IDEA! A CUT ABOVE Precision cutting instrument out­ lasts the competition by ten to one.

The Uber Skiver was designed to meet the precision require­ ments of photofabrication, microcircuitry, graphics arts pro­ duction, etc., and as such becomes the perfect cutting tool for the discriminating modeler. -ONE B L A D E R 0 "

• Long-Life Stainless Steel Blades Availiable in seven satin anodized handle colors: silver, blue, red, green, gold, black, and violet • Rear Draw-Bar Clutch Complete set in fitted hardwood case; includesUber Skiver, together with two vials containing • Instrument Quality Materials four No. 11, and one each of Nos. 10, 12, 15, and 20...... $16.95 • Advance Collet Design See your dealer, or order direct. Dealer inquir­ Individual handles (specify color!...... $6 95 • Hex Cross-Section ies invited. Orders are shipped First Class mail Vial of 6 blades (No. 10. 11. or 1 5 )...... $3.00 • Deeply Knurled Grip in the U.S., Canada, and Mexico. Overseas A ir • Blades can be resharpened mail add 25% of total order. Remit by Inter­ (No. 12 or 20)...... $4.00 national Money Order or U.S. funds Postage paid for APO and FPO orders. t ; VISA and MASTERCARD add 5%, and include expir­ MODEL BUILDER PRODUCTS ation date and signature. California residents add 6% sales tax. P.O. Box 10335, Costa Mesa, CA 92627, Dept. N levers, instead o f the usual o n e o r tw o , at Nats and other major meets. If you are just interested in flying the the tail end. (Two are shown in the One of the major tasks facing Nos­ event, some great kits are available for sketch.) The third is the glide stop lever talgia is agreement on which rules to the 1/2A Spacer, the A-B Spacer, and the and is normal in all respects. There is a use. The two major hotbeds of Nostalgia 1/2A Zeek from Campbell’s Custom Kits tab added to the power lever at the rear, action are in Southern California and in at P.O. Box 5996, Lake W o rth , FL 34461. and the bunt lever is mounted on this Indiana. Although the rules are similar, Lee Campbell has also recently pur­ tab. Another layer of aluminum sheet is differences do exist. chased the R.M. Products line and will attached to the power lever in order to Ralph Prey of the San Valeers (Cali­ be out with Tom Hutchinson’s designs in provide a stop. If the sketch throws you, fornia) and Harry Murphy of the CIA the future. compare it with the pictures that show (Indiana) have been appointed as the So, if you have been wondering where the system in its three stages. official drafters of the Nostalgia rules. to get a kit for the Dragmaster, the NFFS PLANS Here are a few of the differences to be Maverick 1/2A, or the Zingo FAI Power For those of you who are not members ironed out: model, let Lee know of your interest. of the National Free Flight Society, you 1) West coast modelers (read: Cali­ QUOTE FOR THE MONTH may not know that the NFFS has a large fornia fliers) permit the use of T.D. 049 “ Nostalgia ain't what it used to be!” collection of free flight plans, including engines, whereas the Indiana boys do ★ ★ ★ most of the Top Ten Models of the Year. not. I guess that’s it for another month. These are available at a reasonable price 2) West Coasters fly a six-minute Keep those cards and letters coming, from Fred Terzian. 4858 Moorpark Ave., max, whereas the Indianans have a keep building and flying, keep ther- San Jose, CA 95129. shorter max and less engine run. malling, and have a good Christmas and In a d d itio n to the Top Ten plans, NFFS 3) West Coasters have a more liberal New Year. I’ll be back in 1984 . . . with has a good stock of other notable F/F definition of eligible designs than do the m ore. · designs as well. Fred recently wrote to folks from Indiana. say that the NFFS is searching fo r plans of Other differences undoubtedly exist, other successful free flight designs to but I’m sure that Ralph and Harry can Workbench .... Continued from page 6 add to their list. If you want to be work them out. Incidentally, we in the famous, and want to have vour favorite Northwest fly Nostalgia with three- design available to the world, drop Fred minute maxes, 12-second m otor runs for single student pilots in the front cockpits a line. He needs a clear three-view, or HL. and 15-second motor runs for VTO/ of the classic military trainers. Regula­ better yet. a set of full-sized drawings. ROG. No T.D. or Schnuerle engines are tions stipulated soloing from the rear No pay, but plenty of prestige awaits you allow ed . cockpit. Of course, it could be kind of for your efforts. If you are interested in getting your arbitrary when you think about the old NFFS ADOPTS NO STALG IA two-cents-worth on the ground floor of story concerning the commanding offi­ NFFS President Tony Italiano has this emerging national event, send the cer and his desk sergeant. “ I don’t care if announced that beginning with the 1984 thoughts you have to Ralph Prey, 4859 it is pouring rain, go out and water the season, the Society will adopt the Nos­ W. 79th St.. Inglewood, CA 90301. or flowers. It’s in the regulations!" For an talgia Gas movement. I guess that this Harry Murphy, 3824 Oakwood Blvd.. airplane of the Stearman’s gross weight means that the NFFS w ill sponsor it at the Anderson. IN 46011. and generous stability, it seems highly 100 MODEL BUILDER STICK IT. KICK IT. UNSTICK IT. A N Y WAY YOU W ANT IT!

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Pacer Technology & Resources, Inc. 1600 DELL AVENUE ■ CAMPBELL. CALIFORNIA 95008 ■ (408)379-9701 TELEX: 172435 (Peeer Tech Cmpl) (800) 538-3091 (Excepl California) m m m .setting the pace for technology The SEVENTH ANNUAL IraCONSUMER TRADE SHOWl JANUARY 14 & IS, 1984 Pasadena Center, Pasadena, California HOME OF THE FAMOUS ROSE PARADE & ROSE BOWL SEE TH E LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF: • MODEL AIRCRAFT • M ODEL B O A T S • M ODEL C A R S • MODEL ENGINES • RADIO CONTROL SYS1 • MODELING ACCESSOF 1IFS* WIN A TRIP TO HAWAII SEE INDOOR R/C SCALE AIRCRAFT AND BUM P FLYING OVERSEAS EXHIBITORS CORDIALLY INVITED

INTERNATIONAL MODELER SHOW. BOX 127. COSTA MESA. CA 92627: (714) 548-4700 unlikely that it could make much differ­ cuttings from magazines, carefully en­ man” , Bill Hannan, Box A, Escondido, ence! cased in clear plastic folders, and slipped CA92025. Under the title, Scrapbook of Anyway, we asked Bob for his com­ through the mail slot in our front door. Scale 3-Views & Nostalgia. B ill has ments. Lo and behold, one contained the gathered new and previously published "The harder you try, the harder you complete Pixie article from the February material of his creation, and arranged it (all. M y research was in the w rong place. 1961 issue o f American Modeler! A c o m ­ into a delightful rambling of subjects on Although I do (ly classic tail-dragger air­ plete print of the plan, in reduced size scale modeling. You'll find stories, remi- craft, I haven’t had a chance to (ly a appeared in the article. We’re sending niscings, construction articles with full Stearman. My aircraft mechanic friend, the clippings to Tom, and suggest that size plans, a serious study on the art of Ron Rowland, owner of the 1-3 Cub, his local graphics repro shop should be researching, scale views and photos of subject of my january 7983 co ve r pa in t­ able to blow the plan up, using the one- interesting and somewhat obscure air­ ing, says his experience with Stearmans inch scale provided. craft, a revealing article about the Cierva has been rear seat solo, and I w on't The kind helper in this case turned out autogiros, and other miscellaneous dispute the word from the Air Corps to be Chuck Thompson, of San items. It is clearly printed on non glare- guys, that cadets soloed PT-13/17/18's Clemente, California. He telephoned producing paper and is profusely illus­ from the back seat. just today and admitted to being the one trated with Bill’s drawings and many '7 do have in my files several maga­ who came by over the weekend and fascinating photos. You’ll enjoy all 56 zine photos from a mid-60’s publication deposited the goodies. Tom thanks you pages, whatever the price. Write to him showing Stearmans being flown front and I thank you. Chuck! for your copy. You’ll be glad you did, no seat solo, and these are what I worked BOOK REVIEW matter in what model category your from. Ron agrees that the aircraft is not Remember when you had to do those scale interest lies. so C.G. sensitive that it cannot be done, in school. . . book reviews? Used to hate STANDING ORDER but the rear seat custom seems to ’em. Wonder if they still do it. Whenever we publish a construction prevail. Anyway, I just finished perusing a article that calls for molded fiberglass "How many of you full-scale pilots book that I wouldn’t have minded re­ parts, such as the nose cone and wheel have ever trustingly followed the guys viewing in school, but I’m not sure the pants on last month’s Quarter Scale ahead of you in the pattern, gone teacher would have tolerated it. .. just Hawker Fury, we send off an advance through a let-down and landing, then like the time I tried to give a review on a copy of the plans to Tom Keeling, of discovered after a lo n g roll-out, that you monthly episode of “ G-8 And His Battle T&D Fiberglass Specialties, 30925 Block, just landed downwind7 It's the same Aces” , a pulp magazine of WW-I aviation Garden City, M l 48135, phone 313- kind of feeling." adventure stories with some pretty wild 421-6358. This means that by the time PIXIE F O U N D plots. If you remember those at all, you’re ready to order plans and start In the August issue, we requested you’re about ready for retirement! building, Tom will probably have epoxy help on finding plans for the "Pixie” R/C Anyway, the book we're talking about glass parts ready for you. Send $1 for his biplane from an early American Mod­ is nothing like G-8. It's an enjoyable ever expanding list of cowls, wheel eler. Tom Ailes, of Valparaiso, Indiana venture into the fun and foibles of scale pants, and ready-formed and welded was trying to locate them. The other day modeling, as written, compiled, pre­ wire landing gears and cabane strut we came to work and found several pared and published by our “ Hangar- assemblies. ·

102 MODEL BUILDER y a Plus $5.00 shipping I ond handling

his is one of a series of limited edition the artist, and accompanied by a certificate of :ollector prints to be produced from pointings authenticity. Prints rolled and shipped in sturdy ,bv artist Bob Benjamin, most of which hove first tube. UPS insured, ready for professional ippeored publicly on the cover of MOD6L mounting and framing. BUIIDCR Magazine. Prints will be allocated based on postmarke Only 500 prints are available, each per­ date of order. Checks received after 500th print sonally inspected, signed, and numbered by is sold will be returned uncashed.

To be filled in by PRINT ORDER FORM Send check to: MODEL BUILDER MAGAZINE MODEL BUILDER Attention: LIMITED EDITION PRINTS Box 10335, C O S TA M ESA. CA 92627 PRINT NO. . PLEASE SHIP ME A LIMITED EDITION LITHO PRINT OF ROBT. A. BENJAMIN'S Please indicate in numerical PAINTING OF HAROLD KRIER'S GREAT LAKES SPECIAL. A CHECK OR MONEY order your preference for the ORDER FOR $50.00 PLUS $5.00 FOR SHIPPING AND HANDLING IS ENCLOSED. nex t limi ted edition print CALIFORNIA RESIDENTS ADD 6% SALES TAX. NAME STREET □ .A3 Cub □ P-43 (Please print) □ Fran klin Sport CITY, STATE, ZIP C\Waco YKS-7 □ Monocoupe Clip this coupon or make a copy _ “Cioud Satellite City P.O. Box 836 Simi, CA 93062 Attn: Bob & Bill Hunter Dancers” Dear Bob and Bill: We’ve all used “HOT STUFF” and SUPER T for years on our show and individual models. Being long time HOT STUFFERS we thought we knew all the tricks until we saw VIDEO-TIPS 1 & 2. These tapes really opened our eyes to the many ways a modeler can use “HOT STUFF,” SUPER T and HOT SHOT as well to eliminate lots of unnecessary work. We just wanted to say thanks for your great products and your caring enough to share your knowhow with the modeler. You can consider the Cloud Dancers 100% HOT STUFF. P.S.: It’s nice to know that your products are MADE IN AMERICA. Keep up the good work. Sincerely, Cloud Dancer R/C Show Team, Kissimmee, FLA.

Left to right: Tom Veloskey, Johny Davis, Jay Ward, Don Muddiman, and Tom Veloskey, Jr. HS-3 3 OZ. 3L95 ------“ MODELER TO MODELER”- HST-4 ECONOMY “HOT SHOT" 2 0Z. 9.95 “HOT STUFF” VIDEO-TIPS 1 AND NEW#2

HS-4 ECONOMY 2 02. 9.95

—TWO— MODEL BUILDING'S STATE-OF-THE-ART INSTANT GLUES ONE HOUR VHS CASSETTES •CLUB MEETINGS AS USED BY WORLD CHAMPIONS • HOBBY SHOPS ☆ HANNO PRETTNER • DISTRIBUTORS ☆ LES MCDONALD • ORGANIZATIONS FAI PATTERN WORLD CHAMP C/L STUNT WORLD CHAMP • HOME VIEWING ☆ WOLFGANG MATT ☆ BOB HUNT CALL OR WRITE FOR FAI PATTERN WORLD CHAMP C/L STUNT WORLD CHAMP PAST PAST VIDEO-TIPS DETAILS P.O. BOX 836, SIMI, CA 93062 (805) 522-0062 Fan Cooled Engine Collective Pitch Head Tail Rotor Blade Holders Supported by (4) Ball Bearings REMARKABLE!

Retail S234.95

KALT BARON 20

Why remarkable? Because the Kalt Baron 20 our enormous inventory of genuine factory aluminum engine mount is machined, drilled is not .ill the things you would think it might replacement parts. In fact, the four most and tapped to accept most popular .20-.30 size lx· It's not expensive, hard to fly, difficult commonly used parts i Main rotor blades. Fly engines, injection molded cooling shroud with and time consuming to assemble, and parts bar. Main shaft. Main gear) am an average of molded-in clip for starter belt, shaft driven aren't overpriced or impossible to obtain. 20% cheaper than our competition. tail rotor drive, tail rotor blade holders You'll be pleasantly surprised to find the So take a closer look at the features we offer supported by (4) ball bearings, the few Baron 20 is the least expensive of any .20-,30 on the Baron 20 and when you're ready to buy wooden parts are machine cut. notched and size helicopter on the market. It is stable but the best for less, give us a call at Circus drilled, all necessary hardware including gas tank is provided. also scry responsive in flight, the perfect Hobbies. You’ll find the Baron 20 truly blend ol stability and maneuverability, not remarkable! normally found in helicopters this size. To Options Available: speed up assembly time the few wooden parts Features: Collective pitch (factory assembled head), Hiller Bell Mixer required are machine cut, notched, drilled and Requires KB2404A Follower even the collective pitch rotor head Ls factory prefinished and balanced main rotor blades, assembled. You will find parts are less cut and trimmed ABS canopy is shock Autorotation System expensive and readily available because of mounted on rubber grommets (glue included), Requires KB2405A Main Shaft black anodized frames. p Orders Only - Toll Free (800) 782-0022 3132 S. Highland Dr., Las Vegas, NV 89109 Customer Service Send $1.50 for Product Information Package and Information (702) 732-0022

Prices subject lothongt without notice. Limited to ifimntity nu ham l. Our new Acorns two channel is NEW FCC FREQUENCIES EXCLUSIVELY NEW FM CIRCUITRY available on the new, exclusive FOR CARS, BUGGIES, AND BOATS. Sugg. Retail: $233.98 car/boat, 75 MHZ frequencies. This reduces the problems of Sugg. Retail: $111.98 SALE PRICE $149.75 possible interference between SALE PRICE Acorns 4-Channel System with 4 servos, nickel surface vehicles operating in close $71.66 cadmium battery pack, dual output charger, trans­ mitter. receiver, switch harness with charging jack, proximity to model aircraft flying Acorns 2-Channel System With 2 servos, battery servo trays, frequency (lag. Featuring: fields. Now you can drive your car, boat or buggy and not worry box, transmitter, receiver, switch, frequen­ Transmitter RF input: 700 milliwatts · Modulation cy Hag. mounting screws and grommets. System: FM · Pulse Time Neutral Position: 1.4 milli­ about fliers interfering with your seconds · Pulse Time Minimum Position: 1 millisecond operation. Featuring: • Pulse Time Maximum Position: 1.8 milliseconds • Operating Voltage: 9.6V to 12V · Typical Current Ourfourchannel FM incorporates Transmitter Modulation System: A M · Pulse Time Consumption: 150 milliamps · Dimensions: 7.1" x 2.3” Neutral Position: 1.4 · Pulse Time Minimum Position: 1.0 the latest technology along with X 6.02" · Weight: 1.4 lbs · Frame Time: 18 milli­ • Pulse Time Maximum Position: 1.8 · Operating the new FCC approved frequen­ seconds · Large easy-to-read battery meter (D'arsonval Voltage: 9 volts · Typical Current Consumption: 150 meter to monitor battery condition) · Integrated circuit cies. Although, we can’t guaran­ milliamps · Dimensions: 6.3" x 1.97” x 5.2" · Weight: encoder for precision reliability and low current drain 11.1 Oz. · Frame Time: 18 milliseconds · D'arsonval tee that you will fly totally immune • Transmitter frequency: 72 megahertz band · 34 click metering ol battery voltage · Integrated circuit encoder from interference, this gives you stop trim levers for precise control · Positive throttle lor precise control · Quick, precise single axis self- ratchet · FCC Type Accepted · Diode protection on a lot of added protection. Now centering controls · FCC type Accepted · For economy, charging circuit · Easy to grasp knob switch · Neck you'll be able to fly on exclusive it uses only 6 cells instead of 8 · On-off switch with strap attachment · Handle grip provided · Crystal con­ anti-bump ridges · Neck strap attachment · Handle AMA aircraft band frequencies trolled oscillator circuit · Knurled metal finger grips for grip provided · Crystal controlled oscillator circuit and your selective Acorns FM re­ positive grasp · 8 nickel cadmium rechargeable batteries • Interchangeable finger grips provided supplied ceiver will go a long way to pro- Receiver FCC certified · Operating voltage: 4.8-6 volts Receiver FCC Certified · Operating Voltage: 4.8 to 6 vide added protection from out­ • Operating frequency band: 75 MHz · Intermediate volts · Operating Frequency: 72 megahertz · Inter­ side interference. Frequency: 455 kilohertz; · Selectivity: ± 5 mediate frequency: 455 kilohertz kilohertz 6 dB down · Sensitivity: 5 microvolts • Selectivity: ±4 kilohertz 6 DB down · Sensitivity See your hobby shop . . . for the • Typical current consumption: 10 milliamps or less 5 microvolts · Typical Current Consumption: 10 milli­ latest in Acorns technology. ..now • Dimensions: 1.5" x 2.3" x .83" · Weight: 1.55 oz. amps or less · Dimensions: 1.6” X 2.4" X .8" · Weight: available at extraordinary sale • Antenna Length 39V4" · C-MOS integrated circuit 1.55 oz. · Antenna Length: 39'/>" · C-MOS integrated decoder · Receiver Type: Superheterodyne, double tuned circuit decoder · Receiver Type: Superheterodyne, pricing. shielded front end · Crystal controlled oscillator circuit • Crystal controlled oscillator circuit Servos Four servos provided · Three operate in Servos 2 provided, operate in standard direction · Idle standard direction, one servo operates in reverse direction Current Consumption lOMa or less at 6 volts · Size: Altech • Idle Current Consumption: 10 milliamps at 6 volts 1.6" X 1.7" X .8" · Weight: 1.6 oz. · Three different • Size: 1.6" x 1.7" X .8" · Weight: 1.6 oz. · Three style output discs supplied for each servo · Amplifier Marketing, Inc. different style output discs supplied for each servo powered by dual inline integrated circuit and two external • Amplifier powered by dual inline integrated circuit and motor drivers · Rotary output torque: 41.6 in-oz. Famous Enya two external motor drivers · Rotary Output Torque: 41.6 • Splined output gear shaft for easily trimmed output inch-ounces · Splined output gear shaft for easily Model Engines • Heavy duty, 3-piece servo case to resist crash damage trimmed output · Heavy duty 3-piece servo case to resist • Powerful 17mm motor Superior Acoms crash damage · Powerful 17mm motor Radio Control System Features One year limited warranty · Servo System Features One year limited warranty · Servo System s hardware provided · Frequency flag provided · Battery trays supplied · Frequency flag is provided · 500 milli- case and switch wired together for simplicity of hookup amp hour nicads supplied for receiver and servos · Dual P.O. Box 286 and maintenance · Detachable transmitter antenna for output charger with light emitting diodes to indicate Fords, New Jersey 08863 easy storage · Small size receiver fits in most electric receiver battery and transmitter battery charging 201-572-5792 and gas R/C vehicles · Only 10 Alkaline cells needed for • Receiver and transmitter batteries can be charged operation rather than 12 as in most other units simultaneously or independently · Switch harness with •Offer good while supply lasts. charging jack for easy charging Prices subject to change without notice.