JANUARY 1989
Canada
volume 19, number 204
) 74820 08545 ,Μ5 .05 ELECTRIC POWERED SAILPLANE
EASY TO BUILD - EASY TO FLY
If what you are looking for in an electric sailplane is. good looks, easy to build, fun to fly, and great performance. Thermal Charger Wing Span 60 Inches is the one for you. Wing Area 545 Sq.Inches Opening the Kit will put a smile on your face too. You’ll find top quality hand selected wood, Flying Weight 38 - 40 Ounces precision machined parts, and a complete Motor (Included) Leisure .05 Electric hardware package including, leisure .05 motor, Batteries 7 cell 800 mA switch harness with micro on/off and arming switch, and propeller. Also a clear easy to follow instruction book with lots of photographs. Pick up a Thermal Charger at your local dealer...You'll be happy you did.
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DEALER AND DISTRIBUTOR INQUIRIES WELCOME New bo o k “briefings” fro m H.A· BEECHCRAFT: STAQQERWINQ TO FROM THE GROUND UP, Weick and SUPERFORTRESS: THE B-29 AND STARSHIP. Ed Phillips, Staggerwing, Hansen. Autobiography of aeronauti AMERICAN AIRPOWER, by General Bcechcraft Twin Beech, Bonanza. . .every pro cal engineer Fred weick, designer of Curtiss LeMay and Bill Yenne. Here is sr ig c o o t k to stars» duction and experimental Beech air the Ercoupe, Ag-1 Piper Pawnee ag the complete story of the B-29 as told plane ever flown is documented. plane and the Piper Cherokee. Weick by General LeMay who Implemented Complete warbird coverage of UC-43, made a significant contribution to its fighting strategies.. .from Gen GB-1, AT-7, AT-11, 045, the mighty XA- the advancement of aeronautical eral Billy Mitchell's vision of the '20's 38 Grizzly. Postwar years including technology, including development of for long range strategic bombing. . Model 35 Bonanza, Travel Air, military the steerable tricycle landing gear. the massive war effort that pushed and export models, T-34 Mentors, Covers history of ERCO and the Er the B-29 off the drawing boards and Barons. Dukes and the legendary coupe, development of the Ag-1 Paw through the factory gates in record King Airs; they're all here plus much, nee and the Cherokees. 109 photos, time and the strategic bombing of Ja much more. With 245 photos, includ drawings, 556 pgs. 6* x 9 ’ , hdbd. pan and the atomic strikes. 24 pgs. of ing many never published before, ...... 4351C $39.95 photos. 288 pgs, 6" x 9 ’ . hdbd...... 3220D $18.95 343-view drawings, technical specifi FOKKER FIGHTERS OF WWI, Imrie. cations .96 pages, 8 % ' x V T.sfbd. From the genius of “ the Flying Dutch CURTISS 1907-1947, Bowers...... 2012A $14.05 man''. Anthony Fokker, came the Complete history of Glenn Curtiss THE PIPER CLASSICS, Christy. The fighting machines that made heroes and his companies. Model by model fun “Cubs"—simple tube and fabric out of Immelmann and Boelcke and coverage with clear crisp factory pho aircraft. Discusses the evolution of “Fokker fodder” out of many Allied tos, historical detail and fullull spspecs, Piper llghtplanes—J-3 Cub, J-4 aircraft. Great photos of the fragile Covers earlyirly experiments by Glenn Coupes. J-5 Cruiser, PA-11, PA-18, Eindekkers, DR-1 Triplane, DVII. EV Curtiss and exhibition tours. From Vagabonds, Colts, Pacer/Tri-Pacer, parasols, and obsure types. 120 pho early flying boats, June Bug, NC-4, even Wag-Aero's CUBy. Also cov- tos, 68 pgs., 7" x 9Vj ", sfbd...... Jenny, Hawk fighters and racers. ereds: Availability, problems, SPECS, ...... 4549C $8.95 Robin. Condor to the P-40's. C-46 and rebuilding, maintaining and operat THE AMERICAN FIGHTER, Ange- jet aJc. Hundreds of photos. 637 pgs. ing. 101 illus. 160 pgs, 5 ' x 8", sfbd. lucci & Bowers. A definitive reference 5 Vi *x 8% '.hdbd. . . . 3383C $34.95 ...... 4208Β$13.β5 book on American fighters from 1917 THE PIPER INDIANS, Clarke. Gain TEST PILOTS by Richard Hallion. to present, superbly chronicling The complete story of the men, their practical insight into the reasons for every model and variant from WWI bi planes and accomplishments, from the increasing popularity of the Piper planes to the sophisticated war ma Indians! A model-by-model inspec the pioneers of flight through the chine of today. 870 photos and 1340 Golden Years to the first iet and the tion of the series: the original PA-28 schematic drawings, with perform Cherokees - the improved Indians; first man on the m oon.. .from Jenny ance specs and production history to Voyager, from Spitfire to Space Warriors, Archer. Dakota - the retract- on everv Diane. 480 pgs., 8 ’/»" x 11*, ables; PA-24 Comanches. PA-28R Ar Shuttle—and the technical break hdbd...... 3475C $40.00 throughs they risked their lives to ver rows - the hard working sixes; and the ify. Some stories end in tragedy, oth Tomahawks, Apaches. Covers: where to find, maintenance, specs, refur Dramatic New Videos! ers in brilliant triumph, but each bishing, a n d .. .all of those ADs and helped explore the frontiers of flight. STCs and modifications. 112 photos, Over 150 photos, pgs., 6" x 9". sfbd. 288 pgs, 7" x 10'. sfbd. June Release...... 4352C $ 17.50 4213B $16.95 ONCE THEY WERE EAGLES. PACIFIC AIR RACE, Scheppler. Eight Walton. The men of the Black Sheep wood, wire and fabric planes took-off Squadron. Corsairs vs Zeros, combat from Oakland, CA. Aug. 16, 1927... at its best. You'll fly the missions, their destination, Honolulu; their party with the men. share their victo goal, glory prize monies. Two of the ries and heartaches, get to know eight made it. This is the true story of “ Pappy" Boyington. Nifty then-and- the pilots, mechanics and the by now portraits of the pilots. Going to standers. 66 b/w photos. 208 pgs. be a classic, this well researched hdbd...... 4353CS24.es book is great combat writing with no minced words. Well illustrated. 214 U.S. NAVY CARRIER BOMBERS OF pgs., 6 ’ x9', hdbd. A Reviewer’s W W ll. Profiles of the TBD Devasta Choice! 2926C $18.00 tor, SBD Dauntless, SB2C Helldriver THE AIRSHOW. The most spectacular performances of the US and T8F/TBM Avenger. Carrier opera Blue Angels. Italian Freece Tricolorl, Canadian Snowbirds plus PAN AM: AN AIRLINE AND ITS AIR tions. both routine and hazardous are the Brazilian and French national aerobatic teams as the per CRAFT, R.E.G. Davies. Pan Am's depicted with excellent three-view U.S. form at the Canadian Abbottsford International Airshow. Take story spans the entire history of air drawings, color side-view and 121 your seat in the cockpit of the world's fastest and sexiest air transportation in the U.S., from float C a rrie r photos and cockpit views. 120 pgs., planes, to "China Clippers," to the jet Bombers Of QV*m x 11*. sfbd...... 4103A S9.9S craft as they swoop and soar wingtip to wingtip. Witness exhi bitions of the Harrier, Tomcat. Hornet, Concorde and SR-71 age. Covers the history of the airline World War II Blackbird. 60 min. A REVIEWER’S CHOICE. by focusing on acquisition of a new U.S. NAVY CARRIER FIGHTERS OF ...... VHS V8979N BETA B8980N only $19.95 airplane or expansion of its air W W ll. A fine reference volume con routes. 32 full color scale drawings taining profiles on the Buffalo, Wild ADVANTAGE HORNET. Breath-taking footage puts you in the by Mike Machat, 20 maps, 96 pgs., cat, Hellcat, Corsair and Bearcat. cockpit of the F/A-18 Hornet. Share the pilot’s view of flight 1 1 'x 8 % '.h d b d . .. 3478C $24.95 Lots of combat photos, cockpit and testing, aircraft carrier qualifications, air combat maneuver detail shots, plus high-quality three- ing, weapons delivery, mid-air refueling and heart-stopping TOP GUN. Hall. Fly with the best view drawings. 153 photos, 51 color low-level formation flying. Experience this remarkable ma fighter pilots in the world, in training side and top-view paintings. 120 pgs., chine from tree-top level to over 50,000 feet. See why the Hor at NAS Miramar at the Navy Fighter 8% " X 11", Sfbd...... 4104A $9.96 net was chosen by the U.S. Navy’s “ Blue Angels." 60 min. Weapons School. Ride with them at ...... VHS V8722D BETA B8723D $59.95 supersonic speeds as they hone their WINGS OF CESSNA: MODEL 120 skills by maneuvering with and out- TO THE CITATION III. Ed Phillips. EAGLE COUNTRY. You're there In the cockpit as you scramble shooting agressor aircraft. Witness The complete family of Cessna air after intruders trying to penetrate North America and Central their rivalries, egos, and commerade- planes from the rag-wing 120 to the European Airspace. Feel the "G" forces as you push the F-15 rie as they live life on the razor's high-tech Citation III. Experimental to Its lim its In spectacular air-to-air combat. Brief with F-15 pi edge. 144 pgs., 120 photos. 24 in full- ships, one-of-a-kind, the CH-1 heli lots as they discuss tactics, missions and weapons. The F-15 color, sfbd., 8" x 8% ". copter and military models, every one Eagle is every fighter pilot’s dream and every MIG pilot's night 4436A $12.95 documented with technical changes mare. 60 min...... VHS B8720D BETA B8721D $59.95 by model year, specs., performance, THE SMITHSONIAN BOOK OF total built and serial number data. FIGHTER ACES OF WW II. Return to 1943 with four Aces of the FLIGHT, Walter Boyne. A fresh look Much new info on the classic 170 and 357th F.G. of the Mighty 8th, their own stories, their gun-cam at aviation history going beyond a 190/195 models. 229 photos of air era-footage. Not a Hollywood re creation, but “ The Real Stuff." mere chronology o f events. Boyne planes and instrument panels plus These are the pilots who changed the course of WWll as they captures the drama of the develop more than 50 detailed 3-view draw escorted American bombers deep Into enemy territory and ment of flight as it really Is, a deeply ings make this a valuable reference stayed to challenge, and defeat, the best the Wuftwaffe had to Interrelated complex of men. ma chines and national priorities. 1?5 for the buff and modeler. 100 pgs., offer.47minutes.. VHS8714 w as $29.95—Now$13.98 Sfbd...... 2011A $12.95 full-color photos, including a 12 page full-color gatefold. 130 b&w photos. IN DETAIL & SCALE $7.95 EACH Pilot Manuals 288 pgs., 9 Vi - x 10%", hdbd. F-4 Phantom II Part 1 ...1041B B-29 Superfortress...... 1050B P-38 ..... 1401B $6.95 B-26 -.1411B $12.95 ...... 3477 $ 35.00 AIR PORTFOLIOS—A full-color pic B-17 Flying Fortress. Part 21051B P-39 .... 14028 $6.95 F-4U $7.95 b°E1Hc 73? B-17 Flying Fortress (PL 1)1042B .. 1412B torial history of the World's most pop F-16 A & B Falcon ..... 1043B F-4 Phantom. Part 3.....1052B P-40 .... 1403B S6.95 F-6F .. 1413B $7.95 ular airliners and civil workhorses. A F-111 Aartvark...... 1044B F-106 Delta Dart...... 1053B P-47 .... 1404B $6.95 FM-2 ..1414B $10.95 spotter's guide to the colorful liveries F-5E A F Tiger II...... 1045B F-15 Eagle ...... 10548 $9.95 AT-6 .. 1415B $7.95 of each operator of that aircraft. Ex F-18 Hbmet...... 1046B F9F Panther...... 1055B P-61 ....1405B $7.95 Spitfire...... 14168 $3.95 tensive captions give historical per F-4 Phantom II Part 2 .10478 F9F Cougar...... 1056B P-63. ....1406B $7.95 Hurricane ...1417B $3.95 spective and interesting facts. Each F11F Tiger...... 1057B f»2 ....1407B $7.95 Mosquito ...1418B $3.95 book contains approximately 64 color F-105 Thunderchlef.....1048B phothotos in 64 pages. Hdbd., 9% * F-14A Tomcat...... 1049B A-10 Warlhog...... 1059B B-17. ....1408B $8.95 Me262 ...1419B $7.95 7%* DOUGLAS DC-9 and F-101 Voodoo...... 1061B B-24...... 1409B $10.95 F-80 ...14208 $7.95 Vol. 1 —Boeing 737 P.R. MCDONNELL DOUGLAS MODERN FIGHTING AIRCRAFT $11.95 EACH B-25 ..... 1410B $10.95 B-29 1436B $10,951 S m ith ...... 2391C $8.95 M D -8 0 Vol. 2 -S h o rts 330 and 360. F-15 Eagle ...... 1301C The Harrier...... 1305C JANE'S SERIES A-10 Thunderbolt II...1306C S m ith ...... 2392C $8.95 F-16 Falcon...... 1302C . 2374C $10.95 Vol. 3-D ouglas DC-9 and MD-80. F111...... 1303C F/A-18 Hornet...... 1307C or-ui 1 Phantom, Sweetman ..2375C $10.95 S m ith ...... 2393C $8.95 F-4 Phantom ...... 1304C F-14 Tomcat...... 1308C Hercules Gaines..... 2381C $12.95 Vol. 4 -A lrb u o A 300 and 310. S m ith ...... 2394C $8.95 14 DAY MONEY BACK GUARANTEE
Tota Send Items: for items Call us Toll Free Please h 3,95 Handling P rint Total Enc U.S. Funds · 800-225-5575 3850H CORONATION RD.. EAGAN. MN 55122 Nam e___ MN, AK. and foreign countries use 1 -612-454- Charge: □ VISA □ MasterCard Address_ 2493 (not toll free). Charge VISA or Master- A c c t. N o ______C ity_____ Card. MN residents add 6% sales tax. Exp. D a te ______S tate____ . C o u n try. Dealers invited. Authors manuscripts invited. MODEL# JANUARY 1989
BUILDER volume 19, number 204 898 West Sixteenth St., Newport Beach, California 92663 Phone (714) 645-8830
STAFF EDITOR/PUBLISHER Wm. C. Northrop, Jr. GENERAL MANAGER CONTENTS Anita Northrop ASSISTANT GENERAL MANAGER Dawn Johnson FEATURES MANAGING EDITOR Richard Dowdy ...... WORKBENCH, Bill Northrop 6 PRODUCTION ARTIST DEAR JAKE...... 9 Kimber Jett-Baird OVER THE COUNTER...... 10 DRAWINGS BY Al Novotnik MODEL DESIGN & TECHNICAL STUFF, Francis R e y n o ld s...... 11 ACCOUNTING MANAGER SOUTHWEST FAN FLY, MarkFrankel...... 12 Robert Ruiz SUBSCRIPTION MANAGER RENO AIR RACES, Felix V iv a s ...... 16 Audrey Peterson SIMPLY SCALE, Steve Cray ...... 24 CONTRIBUTING EDITORS ELECTRIC POWER, Mitch P o lin g ...... 26 Al Alman Walt Mooney ALL ABOUT ARFs, Dr. Art Steinberg...... 28 Jake Doe Mitch Poling Bill Forrey John Pond PLUG SPARKS, lohn P o n d ...... 30 Steve Gray Fernando Ramos COX SUPER CHIPMUNK, M ikeKeville ...... 36 Dick Grossman Francis Reynolds Bill Hannan Stu Richmond CONTROL LINE, lohn Thompson...... 38 Dick Hanson Bob Stalick Cees Kaijim Art Steinberg R/C SOARING, Bill Forrey...... 40 Dave Linstrum C liff Tacie ELECTRONICS CORNER, E lo y M a re z...... 44 Fred Lehmberg John Thompson Eloy Marez Bill Warner FREE FLIGHT SCALE, Fernando Ramos ...... 46 INSIDERS, Dave L/nstrum...... 50 ADVERTISING Gordon Boudewyn HANNAN'S HANGAR, Bill Hannan...... 56 Advertising Accounts Manager Corporate Office FREE FLIGHT, B o b S ta lic k ...... 58 (619) 744-7337 RAMBLIN’ IN OZ, Stu R ich m o n d ...... 62 Al Novotnik 4 Beverly PL, Norwalk, CT 06850 Bus. Phone (203) 847-7478
CONSTRUCTION MODEL BUILDER (ISSN 0194 7079) is published monthly by RCMB INC., 898 DAYDREAM BIPLANE, Bob Benjamin...... 20 West 16th St., Newport Beach, California 92663. Phone (714) 645-8830...... LI'L MISERY O.T., Dick Cohen & lohn Worth 35 Subscriptions: $25.00 per year, $47.00 for PZL-EAGLET, Walt Mooney...... 53 two years. Single copies $2.95. Subscrip tions outside the US (except APO & FPOl $38.00 for one year only. All payments must be in US funds, drawn on a US bank. Copyright 1989 by RCMB INC. All rights reserved. Reproduction without permission prohibited. Change of address notices must be received six weeks before date of issue that new address takes effect. Send old address with new. . .old label preferred. Duplicate issues cannot be sent. Postmaster send ad COVER: At the 1988 Reno Air Show, Jimmy Gist, from Grapevine, Texas, puts his SNJ-4 "Big dress changes to Model Builder, 898 W. Red" into a banking turn around a race pylon. Gist, a pilot and rancher when he's not rac ing planes, was one of more than 200 entrants on hand to celebrate the 25th Anniversary 16th St., Newport Beach, California 92663. of this prestigious event. For more of Felix Vivas' spectacular photos, see page 16. Second class postage paid at Newport Beach, California, and additional offices. MODEL BUILDER 2 Zenoah Quartz Engines
Zenoah G-62, 3.78 cubic inches
airplane up to 26 pounds. It is one of the most reliable Zenoah G-38, engines of any size. Once it has been run a couple of 2.28 cubic inches times, it can be easily started with one or two flips of the prop. If you were to design and build your 'dream engine', The Zenoah G-23 is the smallest of the family. If offers what would it be like? It undoubtably would be easy to very high power start, have high RPM's, and would be light and compact. in a compact size. Reliable performance with little or no vibration would It fills the gap be also be a must. You would want great fuel economy and tween large glow very low noise. engines and the Here at World Engines, we have a line of engines that two-f cubic inch is just what you are looking for; the Zenoah Quartz G-23, engines. The G-23 G-38, and the G-62. These high quality engines are can easily power designed and manufactured by the Komatsu-Zenoah 1/5 and some 1/4 company of japan, a leader in internal combustion scale aircraft. engine technology for many years. For more infor Since all three sizes of Zenoah Quartz engines use mation ask your gasoline as fuel, they are cheaper to run and are cleaner local dealer or to operate than glow engines which run on high priced give us a call. nitro fuel. The Zenoah G-62 is one of the largest engines on the market. The amount of power this engine generates WORLD ENGINES INC. 8960 Rossash Rood. Cincinnati. Oh. 45236 while swinging a 20 to 24 inch prop, makes it a great Phone: (513) 793-5900 · Telex 214 557 choice for 1 /4 and even some 1 /3 scale projects. ^ These products are available exclusively The Zenoah G-38 is suitable for just about any model ENGINES j through World Engines dealers nationwide. ^ S I G ^ t % SCALE PIPER J-3 CUB The classic Piper Cub has been America's favorite lightplane for over 40 years. Find out for yourself why the Cub is so popular by building one of Sig's 1/4-scale versions. All of the legendary flight characteristics of the full-size Cub are inherited by these easy to build R/C replicas. Both the standard full-span J-3 Cub and the more aerobatic Clipped Wing version are very smooth and stable in flight. When powered with a 4-cycle engine, the realism of these giant scale models is almost breathtaking!
g lo w ENGINES: 60 90 2-STROKE 90-1 .60 4 STROKE WINGSPAN 105 INCHES WING AREA: APPROX 1600 SQ.. IN mu* WEIGHT 14 16 LBS LENGTH: 67 INCHES /
KIT NO $ 199.95 RC-48 EASY TO TRANSPORT 2-PIECE WING
These are the most complete and best engineered Cub kits on the market. They feature Balsa-Ply-Spruce Construction - Precision Sawn and Die-Cut Parts - Molded Plastic Cowling - Molded Plastic Dummy Engine Detail - Graphite Pushrods - Formed Wire Main Gear - Scale Leaf-Spring Tailwheel Assembly - Spruce and Aluminum Wing Struts ■ Brass Tube Jury Struts - Adjustable Tail Brace Wires - Authentic Decals - Full Size Plans - Photo Illustrated Instruction Book - Complete Hardware Pack including Hinges, Control Horns, RC Links, etc.
FLY YOUR CUB OFF WATER jw W i '/4-SCALE AEROBATIC WITH THESE OPTIONAL CLIPPED WING CUB 46 IS FLOATS GLOW ENGINES: 60 90 2-STROKE
ONE-PIECE WING * Quick and easy to build * Super strong balsa and lite-ply construction * Full size plan and photo-illustrated instruction book * Complete water rudder assembly including steering cables KIT NO. WINGSPAN 86 INCHES * Includes pre formed brace wires and RC-47 $ 189.95 WING AREA: APPROX 1300 SQ. IN all the mounting hardware to tit a WEIGHT 14 ■ 15 LBS 1/4-scale Cub Designed by MIKE GRETZ LENGTH: 67 INCHES * Helpful tips on tloat (lying
Building and flying a Sig 1/4-scale Cub is one of the most enjoyable experiences in modeling - our customers have told us so: "The most satisfying R/C project I've ever done." " It’s the best kit I have ever built. Everything fits!” "Compared to the other kits on the market, yours is superior." “ I've had more fun with that Cub than any model I’ve every flown!" " It’s a pleasure to see a plane fly so well on its first flight." "The plans and instructions are the best I've used in my 9 years experience." aii prices subiect to change without notice "YOU CAN’T GO WRONG WITH A CUB” ...... AMERICA S FAVORITE LIGHT PLANE!
See your dealer first! If not available, call 800-247-5008 toll free for orders only. For domestic orders under $15 add $2.50 postage. Over $15 ppd. Catalog 50 - $3.00 SIG MANUFACTURING CO., INC...... Montezuma, IA 50171 sig: BUY FROM AUTHORIZED SIG DEALERS ^ sig: BLOOM WG TON CANTON MARYLAND HEIGHTS NORTH DAKOTA WAHUfttSTER WALLA WALLA VAN NUY5 Hwrtey* R C Smah Brothers Hobby Advanced Redo Control HobOes Flying Models Hobby Cent#· FARGO J C R D Hobb— CULLMAN 13 York Road PH 872 5200 Rk· 1 B* 277A Ph 5292*18 Chaney s RC Hobby Supp·— 16053 VOOry BMJ 616 N Mam St 323 Turnpfte St #9 7723 Crave Coeo> MU Rood Valley HoOby 4 Raceway CHCOPEE ST CHARLES «543 So tst Ave So WEST CHESTER 60t 5 » Si S W Ph 734 24® PH 8157866583 CMCAGO M o d ^ A .tra il Supply Carte· EQUALITY
Yknguard sets the pace all other FM and PCM extremely accurate control response. systems must follow. Designed with advanced Dual Rate elevator and aileron controls, features and a stylish high tech appearance, and electronic trims for maximum aircraft Vanguard is the first R1C system to offer true performance are additional standard 1991 performance and capabilities, at a down features offered on the VG6DR FM and to earth price. VG6P PCM systems. The economical A Breakthrough in Tminer system. Available Vhnguard FM and PCM on Ih n g u ard FM only. systems incorporate the same FM Technology quality craftsmanship and state- Suitable for beginning of-the-art component technology of and sport flyers, \hnguard is the first Airtronics' most sophisticated1R/C 1 low-priced FM system to offer you systems. total 1991 flight capability. Vhnguard Top quality Airtnmics \hnguard comes complete with utilizes Airtronics reliable Gold Label precision gimbals. High Quality Rechargeable NiCd Super Narrow Band Dual Conver- Batteries and Servo Reversing on All Channels. Precision siori Receiver for superior aircraft per- gimbals give \hnguard the responsive feel and critical formance and control, control of our most advanced aircraft systems. Fully ad- You get a clearer, more efficient signal that's less sus- justable length and tension sticks provide modelers with ceptible to specific types of interference, image frequency and intermodulation problems. Vinguard gives you all The VG6P PCM system also incorporates Adjust the technological advantages of super narrow band FM able Low Throttle and Elevator Flap Mixing functions for operation at a price comparable to most AM systems. enhanced flight control. Vinguard FM systems also incorporate a conven These high quality Vanguard PCM transmitters offer ient Trainer system which allows any two Airtronics you unmatched system ______Trainer-equipped transmitters, coupled by a cable, to features and unsurpassed ^ Umguard PCM control the same airplane, for easier flight instruction. performance at an Receiver. affordable price. A Competitively-Priced PCM Vinguard PCM systems feature advanced com A True 1991 Receiver ponent design, a Gold Label Super Narrow Band All Yhnguard Dual Conversion Receiver and the same sophisticated FM and PCM systems Pulse Code Modulation technology available in our feature Airtronics' Gold Label higher priced R/C systems. Super Narrow Band Dual Con Airtronics' sop ’ version Receiver. These state-of-the-art based Pulse Code 1 receivers give you all the advantages of superior offers modelers all the advantages of virtual image rejection, improved sensitivity, narrow' bandwidth trouble-free operation. and maximum interference rejection. \hnguard PCM systems feature a Trans Equipped with this compact, high performance mitter Low Viltage Audio Alarm and a fail/Safe Airtronics receiver, Vmguarcf is the first complete R/C mechanism that automatically resets control system that meets or exceeds all the AMA specifications position, enabling you to fly through unexpected and guidelines for operation in 1991 and beyond. interference. A convenient PCM/PPM Switch you the ability to switch between Airtronics PCM or Airtronics’ Commitment to Quality receivers for greater system flexibility. Vanguard series radios are fully compatible with all Airtronics' quality accessories, servos and radio systems. Airtronics is the only major R/C manufacturer that offers you full product compatibility. All our FM and PCM servos and accessories have the same interchangeable plug types used on our reliable AM systems. Airtronics state-of-the-art trans mitters meet all AMA and RCMA Gold Sticker requirements and specifications. Our FM and PCM R/C systems meet and exceed all 1991 AMA guide lines, assuring you fully functional operation in 1991 and beyond. At Airtronics we don't build obsolescence into our products. V\fe stand behind our R/C technology and product line with a commitment to servicing what we sell, now and in the future. V\b back that commitment with a full one-year limited warranty on all our quality R/C systems. tonguard is Superior in Every Respect \hnguard FM and PCM systems incorporate functional system design, high quality advanced tech nical features, and superior 1991 flight performance, at a competitive price. If you're seriously thinking of buying a new R/C system, Airtronics' Vinguard is the only choice to make. In the race to 1991, Vinguard sets the pace. AIRTRONICS m ' 11 Autry, Irvine, CA 92718 (714) 8308769
At Airtronics, we want to be known as the best, not just the best known. B U i
N o r t h r o p ' *
Leo O'Reilly with his quarter-scale Laser 200 with an Enya VT 240, and an 18x10 propeller. w o r k b e n c h Weight is 19 pounds. Seen at the Bicentennial Model Aircraft Pagent in Australia.
• Our good friend, Leo O'Reilly, from South Australia, came by RCMB's office in early October to visit while on business in the US. Leo is a retailer and distributor of model supplies in Australia, as well as an accomplished modeler in his own right. On this visit, he brought along some interesting photos of large scale R/C model aircraft that took part in the Bicentennial Model Aircraft Pageant, in Cheltenham. The South Aus tralian Aeromodellers Association, working with the Australian Bicentennial Authority, performed a great PR act for the hobby at this pageant. It was conceived to present a history of Australian aviators and their air craft, consequently, many of the models were designed and built specifically for this show. A grant from the Bicentennial Authority made it possible to present this pageant and assemble modellers from all over Australia, as well as two current overseas aerobatic champions; Bertram Lossen from West Ger many and Ivan Kristensen from Canada. We Ian Forrestor's 108-inch span Stinson R. Powered by an S. T. 2500 and an 18x10 prop. This don't have space here to present all of the big quarter-scale craft tips the scales at 23 pounds. photos, but hope to show you more in the and even before the first issue appeared, I suppod we have received from the free near future. read in a club newsletter that this new flight industry, which isn't much anyhow, I GUESS YOU'RE RIGHT magazine was being staded up by an R/Cer, has been about equal to point-you-know- I have just received a letter from Terry and would therefore probably be just an what over infinity! Rimed, of Baldwin, Florida. I won't quote other model mag that didn't have any free During all this time, in spite of advice to all of Mr. Rimed's letter, but the pad I am flight material in it. the contrary from people in the know-how quoting is not taken out of context, I am just In subsequent years, on up to the present, of the publishing business, from well- leaving out someone else's name about I have taken up a substantial amount of meaning friends who point out the finan whom he says the same thing. "L ik e ...... editorial space in the magazine on monthly cial foolishness, and from my own deep- you are a very enthusiastic model en columns such as "Free Flight," "Free Flight down awareness that I'm stubbornly hang thusiast, but, even though you built and Scale," "Indoor," "Hannan's Hangar," "In ing on to this belief that the basic hard core flew free flight models, you never under siders," "Plug Sparks," "O ld Timer of the of the model aircraft hobby is free flight and stood free flight, and were never a free Month," and construction articles on therefore by damn I'm going to continue to flighter. You bailed out of free flight into R/C Peanut Scale, Bostonian, Embryo, Pistachio suppod it as best I can, no matter what the as soon as you could, like ...... did, be Scale, Wakefields, Unlimiteds, A/1, A/2, consequences, I have done just that. cause you never understood free flight, like A/3, FAI Power, Classes 1/2A, A, B, C, rubber Then, Mr. Rimed, in return for my effods ...... never did." Well, Mr. Rimed, I really scale, gas scale, C 02, World Champs re and my beliefs, and also what I think are believe you're right. I should have smar pods, NFFS Champs repods, and all sods of some personal and financial sacrifices, I get tened up when only a month or two after how-to stuff. And the dumb thing about all a letter like yours . . . Mr. Rimmed, you're selling the first subscriptions to Model this is that advedising suppod is what keeps right, I DON'T UNDERSTAND FREE Builder, sight unseen, at the 1971 Nationals, magazines in business, and the advedising FLIGHT!
8 MODEL BUILDER A 90 cc chainsaw engine pulls this 47-pound Ryan STA through the A Rutan Quicky by Geoff Burfield, powered by an S.T. 3000. air with Mark Collins at the controls. Span is 118 inches.
• It's time once again to recognize those select few of our modeling peers who have achieved the unachievable, conquered the unconquerable, or just plain lucked out. The more or less annual presentation of the Jake Awards brings a little well earned fame to the ordinary modeler whose talent, dedi cation, and hard work have resulted in the extraordinary. Sadly, no cash or merchan dise prizes accompany these awards, but if you all write in to Bill Northrop and com plain, maybe he'll chip in a subscription or a set of Uber Skiver knives next year. THE WAKEFIELD CERTIFICATE OF MERIT This award recognizes achievement in any of the various rubber-powered events sanctioned by the AMA. This year's recipi ent is Mark Sprechlin, of Saratoga Springs, New York. Mark was stretching out a rubber bundle prior to winding it when he ac cidentally let go of it. It cracked the whip and snapped a nubile young thing in a pair of tight shorts on her derriere. She turned around to locate the source of the attack on her posterior and found an old gentleman standing behind and to her left. After in first anniversary of his appointment as over the field at 50 feet of altitude in a five- forming him to keep his hands to himself, president of the rocket club, Lt. Livingstone aircraft vee, the formation includes a flying she slapped him a good one right in the organized a launch demonstration for the Weber barbecue kettle, a flying Saab trunk chops. His false teeth flew out and landed brass. The show was a rousing success. lid, a flying pizza with garlic and ancho on a Vultee Vigilante scale model. The old Damage was limited to two F-18s, a P-3 vies, and a flying tanning booth. Leading gentleman retrieved his teeth and headed Orion, and the sinking of the Commodore's the way, at the point of the vee, is Col. Jim for the first aid facility. When the Vultee Buick. Lt. Livingstone, or "Stumpy" as he is mie's flying sushi bar. The Colonel won this owner returned, he found teeth marks in his now called, has since been reassigned to year's award not solely for the uniqueness of fuselage and a poodle standing nearby. He sea duty and at last report was busy organiz his show craft, but also for his special show put two and two together and punted the ing an R/C dive bomber club aboard the ending maneuver where he rolls the sushi French pooch over the scorers' tent. The carrier Lexington. bar to inverted and drops Ginsu knives on surprised animal landed in the back of STUPID AIRPLANE TRICKS the crowd. Bravo! Mark Sprechlin's Mercury station wagon This award singles out the most bizarre THE SMALLEST IDENTIFIABLE PIECE and promptly deposited his opinion of the deviation from the accepted model air AWARD whole situation on the tailgate carpet. plane norm in any given year. The award in Fun-flys have a tendency to display mor W hich all goes to show, as Mark pointed variable goes to a fun-fly participant or bid bad taste by presenting a "Best Crash" out at his award ceremony, that when it hits show team member for some aeronautical prize. Well, never let it be said that this col the fan, it's liable to land anywhere. oddity such as a flying doghouse or flying umn has to take a back seat to anybody THE GENERAL DOOLITTLE CITATION lawn mower. This year is no exception. The when it comes to bad taste. So, starting this This award goes to the member of our winner is "Colonel" Jimmie Ray Carlisle, year, the best crash nationwide w ill be armed forces who has done the most to president and lead pilot of the Cuyahoga recognized by the Smallest Identifiable foster model aviation at military installa Cloud Clobberers Show Team, of Cleve Piece Award. The inaugural winner is tions. This year's winner is Lieutenant land, Ohio. Col. Jimmie's team puts on a Austin W. Lomax, of Sweetwater, Okla Junior Grade Samuel P. Livingstone who spectacular display of aerial skill and homa. Mr. Lomax gained the honor at the was stationed at the Patuxent River Naval daring-do that culminates in a finale to beat expense of the loss of his beloved Ryan-STA. A ir Station in Maryland. Lt. Livingstone all finales. In addition to the customary The sleek and beautiful sport plane had petitioned his commanding officer for per bombing of the outhouse with the poor been his pride and joy for the six years prior mission and then started a model rocketry soul inside, there is a formation fly-by of the club at the Pax River installation. On the team's novelty aircraft. Passing majestically Continued on page 108
JANUARY 1989 9 OVER THE COUNTER 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 MB does not constitute an endorsement of that product, nor any assur ance as to its safety or performance by MB.
• Here's a book for rubber-power en 1914, are available from Zenith Aviation tudes, and engines snap in and out of the thusiasts and beginners that is sure to be a Books, Box 2MB, Osceola, Wisconsin quick-change mount so you can be launch hit. Rubber-Powered Model Airplanes is a 54020. Night Fighter, by Anthony Robin ingand relaunching as often as you wish. A basic handbook with features on building son, contains over 135 photos, plus numer 12-inch parachute w ill return your Big Ben stick and tissue and sheet-balsa models that ous line drawings, tracing the development to the recovery crew safely. The long length ily. With many illustrations and photos of night fighting techniques in the aviation of the Big Ben makes it easy to track during detailing construction, trimming and flying world. Write to Zenith Aviation for their free the boost phase and easier to spot during hints, Rubber-Power will be of invaluable catalog, and tell them you read about it in descent. Check it out at your nearest MRC help to the fledgling modeler, and can be Model Builder. Continued on page 90 instructive for those of us who think we • · » know it all. The 168 pages of this paperback They call this rocket 'awesome," and one delight are chock full of useful information, look w ill tell you why. The Big Ben from so get yourself a copy! It, along with Night MRC stands over four feet tall, but weighs Fighter, a hard-bound book covering the only 1.75 ounces. Any engines from A8-2 to history of airborne night fighting since C6-5 will lift this bird to incredible alti-
Nightfighters book from Zenith. Rubber Power handbook from Zenith Books. Big Ben rocket from MRC.
Cambridge Models' Dolphin Super RTF trainer. Great Planes Model Distributors' Electrostreak electric flying model.
10 MODEL BUILDER MODEL DESIGN & TECHNICAL STUFF By FRANCIS REYNOLDS
• Now, where were we? Oh, yes, last On the other hand, it is much easier to cut month the epoxy had begun to set up be or sand off any excess epoxy while it is still fore the fiberglass job was done. At times soft. The gummy stuff w ill load up your like that one thinks seriously about taking sandpaper, but sandpaper is cheaper than up stamp collecting instead. Remember sanding time. own tests, provided you are working on the Murphy's Law, "If something can go wrong, EPOXY THINNING usual open surfaces where the alcohol can it w ill." Estimate how long the fiberglassing As far as strength goes, I haven't found an evaporate as the resin cures. The thinned job should take you, then mix an epoxy that unsatisfactory epoxy in 1-to-1 mixes, but mix does have a little longer pot life than an w ill take at least four times that long to set. you w ill find that some are more viscous unthinned mix of the same epoxy, however. Another word of wisdom from one who has than others. When using epoxy as a glue, Also, according to my tests, thinned learned the hard way. Always mix twice as viscosity helps keep the stuff from running epoxy takes a lot longer to completely cure, much epoxy as you think you w ill need. To off the joint before it sets; but in fiberglass maybe five times as long! Incidentally, if have to take time out in the middle of a job ing, using a brush, the viscosity and sticki you are in a rush, you can cure epoxy five or to mix more epoxy is also most frustrating, ness of the epoxy resi n may cause the brush ten times faster if you provide a little heat. and it has never, in my experience, led to a to drag the cloth out of its proper position. Any temperature above room temperature better quality job. By "fiberglassing job," I This little problem is easily solved by dilut w ill help, but the hotter it is the faster it w ill don't mean fiberglassing the whole air ing the epoxy mix with alcohol to reduce its cure. Overnight at 150 degrees Fahrenheit plane. That w ill normally be broken up into viscosity. Any type of alcohol w ill do, ethyl, w ill completely cure even thinned epoxy. many small efforts and resin batches over a methyl, or isopropyl, provided the water But beware! Above 200 Fahrenheit w ill period of days. But even each little partial content is low. If you have it to mix fuel, use soften and destroy the foam under the glassing job w ill take time. your methanol, otherwise the cheapest epoxy. If you use heat, feel around for hot EPOXY SELECTION source is a paint store, where methyl alco spots that may ruin the part. I'm saying that the 5-minute, 15-minute, hol is sold as a solvent and shellac thinner. You will probably need to thin the epoxy and even 30-minute epoxies are too fast for Do not, I repeat, do not use lacquer thin if you are brushing it on, but squeegeeing the larger fiberglassing jobs, so use longer- ner, acetone, or MEK to thin epoxy for fiber on the epoxy is a different story. In using curing stuff. It is available in lots of places glassing over foam. These active solvents that method, viscosity in the mix is actually and in lots of brands. Boat fiberglass stores would promptly dissolve your lovely foam an advantage. Thin for brushing only. More have it and so do some art stores, craft core! The alcohols won't attack any foam. about these two glassing methods later. shops, and paint stores. The brand I'm using How much you need to thin the epoxy With all the tips and warnings I am hand now is "EnviroTex 1 to 1 Polymer Coating." depends on how viscous the mix is to start ing out, it is obvious that these new model It doesn't say epoxy on the label, but it is. It with and upon the weight of the glass cloth building materials and methods do take a is available in several sizes of plastic bottles, you are using, the thinnest cloth requiring little study and experience. Look at it this and I have seen it in several different stores. the thinnest mix. You w ill learn by experi way, most of us have been learning how to It sets overnight, but all epoxy resins, in ence, but a good starting point is two parts work with balsa for years. We can't expect to cluding the 5- to 30-minute ones, take a resin mix and one part alcohol. Pour in a lit change over to new materials without any number of days to thoroughly polymerize tle alcohol, mix it up, and see how viscous problems. This old dog, however, is most in and reach their maximum stiffness, hard it is. If still too "thick," add a little more. terested in learning new tricks in modeling, ness, and strength. Therefore, don't fly your Don't worry about the alcohol weakening new plane the day after the last epoxy work. the cured epoxy; it doesn't, according to my Continued on page 85
First Layer Second Layer
The author steps into the art and science of epoxy-fiberglass construction techniques this month. See text for details.
JANUARY 1989 11 Southwest Fan Fly By MARK FRANKEL. . .Just about everyone who is anyone in the fan jet department showed up at Fort Worth for the Southwest Fan Fly. Emphasis this year was on high-performance aircraft rather than scale.
• The trend toward non-scale, perfor Violett Sportshark-Cook Starfire-Byron proficiency at this Fan Fly was superb; I mance jets was clearly evident at Copeland Bullet variety. These are highly aerobatic didn't witness any accidents due to pilot er Field near Fort Worth, Texas, during the models, optimized for maximum perfor ror, and the sky was filled with jet models weekend of September 24 and 25. More mance. They routinely exceed 150 mph in for most of the weekend. than half of the models present were of the unaccelerated level flight. The level of pilot Bob Violett, of Bob Violett Models, 1373 Citrus Road, W inter Springs, Florida 32708, (407)365-5869, had so many examples of his designs present that it was difficult to capture them in my camera lens when they assembled for a group picture on Saturday. The Sportshark, Aggressor, and Viper series are becoming the standard of the high- performance jets. Bob's new K.B.V. .80 en gine will certainly further the reputation of these clean aircraft. Tom Cook, of Jet Model Products, 304 Sil- vertop, Raymore, Missouri 64083, (816)331- 0356, put on several impressive displays with his Starfire II. If memory serves me cor rectly, the Starfire started the entire jet per formance movement in the early 1980s when Tom flew the prototype at a Byron Fan Fly. The Starfire's speed, vertical perfor mance, and grace revealed the true poten tial of Tom's then-new Dynamax fan. All of this performance was achieved with lateral inlets and no cheater hole; a radical depar ture from the model jet inlet systems of that period. Tom's new Starfire features con struction improvements and aerodynamic enhancements, but the real news is a new fuel flow valve and tuned pipe. The fuel valve, which is mounted at a remote loca tion from the engine, permits precise mix Ron Abies' huge F-15 shows its stuff w ith a vertical climb. ture adjustments by servo w hile the aircraft
12 MODEL BUILDER Harry Wood's well-designed Northrop X-4 Bantam. This model proved Three Fairchild Republic aircraft. From left: F-105 Thunderchief, to be a very stable tailless aircraft. the A-10 Thunderbolt II. and the F-84F Thunderstreak.
Two of George Miller's custom R/C models. Foreground is an F-4J Bob Violett with his newest Aggressor painted in a scheme similar to Phantom, and in back is an F-8 Crusader. the "Bad Boys" in Top Gun. is in flight. The tuned pipe must be heard to The largest scale model at the Fan Fly was pleaser. be believed. The noise footprint from the a Byron F-15 Eagle built and flown by Ron W hile it didn't fly, Bob Violett displayed Starfire II is so diminished that during high Abies, of Lewisville, Texas. This model was one of his pre-production F-86F Sabres. Bob speed fly-bys the O.S. .77 was clearly test-flown at last year's event. Ron has be expects to release this kit shortly, and it quieter than anything in the air. Tom also come very comfortable with the aircraft should be a huge success. In fact, the Sabre announced that he is selling his Dynamax during the past year. Fie flew frequently was the original project for the Viojett fan fan for $80 for a limited time. This during the weekend, demonstrating the air system. Bob intended to design an exact represents one of the best bargains in craft's smoothness and realism. The Eagle's scale F-86 with an accurate inlet and jet ex ducted fan equipment. flawless landings with its dorsal speed haust, eliminating the use of a cheater hole. Steve Korney, of Hurricane Fans, 14835 brake deployed was a guaranteed crowd- This model has been under development Halcourt Avenue, Norwalk, California 90650, (213)864-8891, appeared with his Cobra design powered by a Rossi .90 with an original eight-bladed fan. Steve's Hurri cane fans are available in various diameters and blade densities; however, the six-inch, eight-bladed fan really caught my attention. This fan system is particularly well suited to the Rossi's output of more then five horse power. Steve's Cobra, which is substantially larger than a Sportshark or Starfire, demon strated surprising speed and vertical ability for its mass. I suspect that Steve's fan has ex cellent potential for large scale jets. I plan to use one in an upcoming 1/7-scale F4D Skyray. While the majority of models at the Fan Fly were non-scale, high-performance types, there was a significant number of scale replicas present. Byron Originals, P. O. Box 279, Ida Grove, Iowa 51445, (712) 365-3165, was well represented with F-16s, MIG-15s, and a particularly handsome Kfir by Tom Perry, of Converse, Texas. Tom painted his Kfir in the colors of the F-21, a variant used by the U.S. Navy adversary Ron Abies w ith his Byron Originals F-15 Eagle. Probably the largest model at the Fan Fly, it squadrons for fighter tactics training. was most frequently flown twin-powered by two O.S. 77s, with Byrofans.
JANUARY 1989 13 Dennis and Lynda Crooks with a spectacular Yellow Aircraft replica of the Grumman F-14 Tomcat. for at least eight years, and like all Violett products it will be of impeccable quality and performance. Other scale airframes that were displayed but not flown include Lynn McCauley's new Lockheed F-104 (a previous example crashed last year when a leading edge flap failed to retract during clim b out). Mike Kulczyk, of Austin, Texas, displayed a nearly complete F-105 Thunderchief, and Ed Couch, of Fort Worth, Texas, exhibited his new A-10 Thunderbolt II. Ed also showed an immaculate F-84F Thunderstreak built from Lynn McCauley's plans and molds. George Miller, of Custom R/C Aircraft, 1140 Civic Center Drive, Rohnert Park, California 94928, (707)584-9446, flew an example of his new Chance Vought F-8 Crusader. Col. Bob Thacker flew an F-4 Phantom, which is also kitted by Custom
Continued on page 90
Lynn McCauley's original design stealth fighter. Model has had five Bob Violett with his new F-86F. This is an exact scale model fe a tu r test flights, but was not stable enough to risk in front of the crowd. ing an accurate outline. Inlet and exhaust areas are correct also.
14 MODEL BUILDER Vernon Montgomery, Clinton, Mississippi, with a colorful Violett Tom Cook with his high-performance Starfire II. This model featured V ip e r. a new tuned pipe that was surprisingly quiet.
f t p < · φ φ
Lynn McCauley with his new F-104 using Dynamax power. This model w ill fly as soon as it gets some paint.
JANUARY 1989 15 By FELIX VIVAS. . .The 25th Anniversary of the National Champion ship Air Races was captured by our ace photographer on the scene.
• The 25th Reno National Championship Air Races, September 15 through 18, 1988, was a milestone for the supporters, participants, and fans. The Silver Anniversary proved to be a pure delight to the record 150,700 air-racing fans attending the four days of fast-paced air- show acts and racing. Lyle Shelton of Dallas, Texas, overcoming a Saturday "mayday" emergency landing in his Grumman F8F white and copper Rare Bear, flew a blistering out-in-front pace Gold Sunday final to win the unlimited championship at 456.821 mph. Fellow Dallas sportsman Alan Preston trying for three Gold wins (Unlimited, Formula One, Biplane) got two out of three by winning Sunday's Gold Formula One in his #44 Sit ting Duck at 240.748 mph and smoothly leading the way to w in the Biplane Gold in his #00 'Top Cat" at 205.918 mph. The AT-6s as always were exciting because of their "wingtip-to-wingtip-on-the-deck" py lon duels in their colorfully painted steeds. Eddie Van Fossen, of Bakersfield, California, re peated his last year win by taking the Gold again in his SNJ #27 Miss TNT at 229.759 mph. Last year we discovered Robert Yancey from Klamath Falls, Oregon, while covering the 1987 races. He introduced one of the two Russian YAK II fighters and, as a novice unlimited pilot on a "lean shoestring" budget, got a few laps experience flying his YAK at that race. This year, Bob, still on a very restricted budget, gave a very stirring, fan-pleasing exhibi tion of the spirit of Reno Championship air racing in his very clean, gleaming YAK II with an R-2800 CB under a snug chrome cowl. His smooth, strong, competitive flying coupled with being the underdog endeared him to the majority of the knowledgeable racing fans. From sweating out getting bumped up to the last minute of qualifications, he made the field and flew his way into the final Silver Unlimited race on Sunday finishing fourth.
Doug Kempf, of Redlands, California zips by in his Smith Mini-Plane. When not racing, Doug is an airline pilot. The other YAK II highly modified and put ting out a lot more horses than Yancey's mount, flown by Skip Holm, proved to be somewhat dicey to fly needing more rudder A Pitts Special, flown by farmer/rancher area, hence sat out this year's races sitting in WesSelvidge, of Buttonwillow, California. the pit area. Another recent new unlimited aircraft eagerly awaited to be seen in action was John Dilley's Vendetta, a P-51 fuselage mated to a Lear Jet wing with a Lear horizontal stabilizer and Piper landing gear, but during the whole four days sat in the pit with a sick engine. The Formula Ones best represent new in ventive approaches to better performance, A diminutive Formula One plane, powered mainly using composites. Bob Drew, of Los by a Continental 100 hp engine. Pilot is un Gatos, California, is a good example. Going kno w n . to a composite wing this year with his Robertson's #73 Puffin both are M iller Spe Friberg Electric Special he saved 45 cials which are pusher T-tailed designed pounds, which in an approximate 500- and really move. pound aircraft does add performance. A much talked about and anticipated James Miller's #14 Pushy Cat and Errol new unlimited race for 1989's Reno Races is
Ralph Twombly, a pilot from Wellsville, New York, with his AT-6 Miss Behavin'. Burt Rutan's new design being built at Scaled Composites, his company in Mojave, California, called the Pond Racer. It's a twin boom, twin-tailed project po wered by two supercharged Nissan factory The winner! Lyle Shelton in his Grumman A Russian Yak, modified for air racing. F8F-2 Rare Bear. Lyle is from Dallas. Continued on page 108
Three AT-6s bank on their way around a race pylon in the Unlimited event.
18 MODEL BUILDER
BUILD a Daydream Biplane By BOB BENJAMIN. . .Our famous cover artist did a bit of daydreaming one day, and the result was this exquisite sport scale biplane, a fine flyer with the Saito 65 installed. Construction is detailed here. • Here's a true story about how one out-of- described as a "could-be-scale" combina plane become whatever you want; I'm wait the-ordinary model airplane design came tion of features from DeHavilland, Great ing to see who will finish one up as a to be. About three years ago as of the time of Lakes, and Waco designs that I like. Most of pseudo-fighter in '30s Army colors! this writing I was spending part of a sunny the people who see it for the first time think The Daydream first flew with the Tech late spring morning taking a walk along one it's a Waco. You ask, "W hy would I go to the nopower 5 and, in fact, took first place in of the rural roads near my home. The cur trouble of building such an involved air the "Sport Biplane" category at the 1987 rent Model Builder cover painting under plane if it's not scale?" Because I wanted to. Northwest Model Expo at Puyallup in that way in my studio was giving me fits, and I It's my daydream. As a matter of fact, this de configuration. It has flown many times with needed some time away from it to get the sign would make a good scale trainer, if you the radial, which produces enough power next steps sorted out. As those of you who will, in that it is complex enough to require to fly the airplane quiet realistically. The Big have been here know, a sunny spring morn the kind of involvement that would be re Bore 5, when fully broken in, gave perfor ing in Western Washington is a big deal, so quired to build a "real" scale airplane, and mance in the air on a 14-6 prop very close to it wasn't hard to play hookey! to inspire a little respect at flight time, but is what I subsequently got from an O.S. FS 61 When I finally did get to the drafting table in fact not at all tricky to fly. The best part of four-stroke. The decision to remove the after the neglected cover painting had been this sort of project is that you can let the air- radial was based on two considerations. Al finished and shipped off to Bill Northrop, though the Technopower is remarkably what started to take shape on my paper was easy to start and flies the plane well, there a fairly simple two-winger that would have area number of details of construction and flown on a four-stroke .45. Sometimes, operation on the engine with which I'm not though, I have trouble letting things stay comfortable for frequent, long-term flying. simple, and the first images got a little big This is not a criticism of Technopower, but ger and a radial configuration sorta grew rather a comment on the state of develop into place, until I realized that I had come ment of model four-stroke radials at the up with a suitable airframe for the Big Bore time these engines were developed. The Five Technopower engine that had been other factor was the immediate request by waiting patiently in its box for too long. The Bill Northrop for the article you are now result was an airplane with a span of just It does look scale up there; flying the Day reading. I didn't feel that a Technopower- over 60 inches, which makes it "legal" for dream is a daydream in itself. Flights are powered airplane would be the sort of pro IMAA "Big Bird" events, and which can be satisfying and completely enjoyable. ject that a lot of modelers would want to get
The Daydream bipe with the Saito 65 installed. This model took First Place at Puyallup in the Sport Biplane category, back in 1987.
20 MODEL BUILDER JANUARY 1989 FULL-SIZE PLANS AVAILABLE-SEE PAGE 106 21 Lower wing prior to adding dihedral. Ailerons Upper wing structure on the board. are in place. Forming a wingtip bow using cardboard form.
(
Wingtip bows ready for cleaning and trimming to finished length. Wings and struts ready for covering.
Bottom surface of upper wing showing cabane Cockpit cutouts with cabanes in place. Note Flying wire attachment at interplane strut. attach screw holes. filler blocks between stringers. Aluminum tab is free floating.
Note 90-degree reversing bellcrank for reliable lin k to th ro ttle .G lo w heater s w itch box seen Tail from above showing faired fabric fillet Little extra goodies that make plane special. here in center. covering as described in text. involved in, so I began a "retrofit" to present flat-bottomed airfoil means that you w ill recommend dyed, clear doped silk, or per the Daydream as a practical design for an have to work a little at outside maneuvers, haps Micafilm , if you want to go this route. off-the-shelf four-stroke single. The result, but w ill return the favor by giving you very If you do build a lightweight model, you after a little over a year of fine-tuning, is dependable low-speed handling. My air might want to try a Saito 50 (and send me what you see here. plane spins very fast and tight, but recovers pictures!). The Daydream as I'm now flying her is readily, so don't be afraid of her if yours is Although I have written a couple of con well matched to the Saito 65 four-stroke en balanced and riggedd loops without hitting struction articles providing involved in gine. I own several of these engines, have the high end throttle stop. Once you have structions for low-time builders, this isn't flown several more, and strongly recom yours trimmed and are comfortable with going to be one of them. If you haven't built mend that you use one yourself should you her, you'll find that she likes to be flown low an airplane from plans before, this isn't the build a Daydream. I have yet to find a mid and slow and w ill make a fine "close-in" air- one to start with. Moreover, the Daydream size model four-stroke that offers a better show or demo machine. The flat-bottomed is not a beginning flier's airplane. Although combination of excellent power output, airfoil means that you w ill have to work a lit she is undemanding to fly once trimmed, docile handling characteristics, and tle at outside maneuvers, but w ill return the there is just too much there for her to work reasonable price than the Saito 65. I'll go a favor by giving you very dependable low- as a trainer. If you can handle a model like a bit further in discussing power options for speed handling. My airplane spins very fast Sky Tiger or one of the Sportster series, well, this airplane. You don't need an .80 or .90. and tight, but recovers readily, so don't be you should have no trouble with the Day Period. The airplane is designed d loops afraid of her if yours is balanced and rigged dream. If you can't, wait, and enjoy air without hitting the high end throttle stop. per the plans. planes like the Daydream when you are Once you have yours trimmed and are com I suspect that an attempt to build a really ready. I'd define ready as being able to do fortable with her, you'll find that she likes to light Daydream (mine has a "show" finish all the basic aerobatic maneuvers safely be flown low and slow and w ill make a fine that cost me a pound or so) would result in with an airplane like the ones just men "close-in" airshow or demo machine. The an eight-pound airplane. I'd seriously tioned and to be able to do three good
22 MODEL BUILDER Cowl in place showing engine control; lower wire at rear is the needle valve, oth e r is choke c o n tro l. The whole model ready for covering and painting. touch-and-goes on three successive passes. Think about that last one; it's a good mea sure of real flying ability. Let's build! If you're with me at this point, I'll assume that you know how to pick good balsa wood. Use medium to hard wood for all primary structure and pick light stuff for all the outside sheets. I strongly recom mend 3/4-ounce fiberglass put on with Hot Stuff to reinforce all the sheeted areas of the fuselage and both wings out beyond the center sections. Keep the wood light and let the high-tech stuff provide the rigidity. I'll recommend Hot Stuff Special T for all con struction. The heavier body of Special T lets you put it exactly where you want it; you can then get a controlled cure using Hot Shot or Kick It. TAIL SURFACES The horizontal and vertical tail surfaces are both built flat on the board. We are simulating welded steel tube structure here, so there is no taper or airfoil to reproduce. Build the horizontal tail and elevator by laminating the outlines first. If you can get a Final inspection from the offiser in charge. long enough piece of wood, you can do the plastic wrap and laminated the outlines them from the plan, trim to exact lengths, stab and elevator on each side in one piece. with bass strips that had been sprayed with and sand absolutely flat top and bottom. I used both heavy cardboard forms and later warm water and wiped dry. forming blocks pinned to the plan over When your laminates have set up, remove Continued on page 94
JANUARY 1989 FULL-SIZE PLAN AVAILABLE-SEE PAGE 106 23 and/or fly for the enjoyment of others. For many, most of the day was spent looking over the models and chewing the fat with their fellow modelers. With the number of entries, it was not the place to get in a lot of flying. The lineups for next in line to fly on a given flight line were sometimes 20 fliers long. This could mean a wait of several hours to get your turn to fly. I guess it can’t be helped though, and the long wait to fly is actually some measure of success. There were very few times on Friday and Saturday that there were fewer than five planes in the air at one time. I really felt sorry for those • The IMAA Festival of Giants was held was a four-day event which was held at Al brave men at the transmitter impound who this year at St. Clairsville, Ohio, August 25 derman Airport in St. Clairsville, Ohio. The took the constant verbal abuse from fliers through 28,1988. The event, to me, seemed facility was ideal for such a gathering. The who had waited so long to fly. When they to be a good place to go to see some good entire airport was at the disposal of the got their turn, they were corralled into a scale models flown. The IMAA Festival is IMAA. The pits were set up along the run flight box from which they could not leave, perhaps the largest gathering of radio- way and with the number of entries, or it would screw up the whole 3 I.M. plan. controlled model aircraft in the world, and stretched along most of its length. Canopies Once they got permission to take off, they the registrations this year topped the 269 were as many as four deep in spots. Camp were told by their flight line marshal in mark. The IMAA Festival was hosted by the ing was permitted right on the facility, and which direction they could fly and how International Miniature Aircraft Associa the place was packed with motor homes, high and how long. Upon landing they had tion. This is an association which has been trailers, and tents. to clear their plane quickly from the runway formed by modelers dedicated to building The festival is an annual event and is held or risk a collision with a model coming in and flying giant R/C models. The giant R/C in a different location each year. It is a non for a landing deadstick. It was surprising models at the festival were comprised competitive type of gathering where how many of us after all that would rush mainly of scale or semi-scale subjects. This modelers bring their planes to display over to put our name on the list for another try six hours later. Perhaps this type of event is too big, but it must be pointed out that this type of gather ing is very indicative of what the average modeler is doing out there. W hile there were many beautiful scale models on dis play and flown, the pits were full of Robin Hoods, Ace 4-120s, and other fun-fly big planes which were not scale. Many Cubs and Lasers were also flown by modelers who had traveled from far and near to be a part of the festival. There were no prizes or trophies. There was just a sense of belong ing to a great hobby/sport which gives each one of us so much enjoyment. The IMAA Festival's location for 1989 was not yet confirmed as of this writing, but there was some talk of Odessa, Texas. If any one would like further information about the IMAA or next year's festival, they can
Jack More's Heath Parasol was powered by his own homemade .90 4-stroke engine.
Aimmerman's Gypsy Moth. This is his second Gypsy model.
Seen at the IMAA Giant Festival: a beautiful Gypsy Moth by Merrit Aimmerman, complete to Closeup of detail on Merrit Aimmerman's ex the last detail. Flies w ith his own Cirrus 4-cylinder 4-stroke engine. quisite Gypsy Moth. Beautiful work!
24 MODEL BUILDER Northrop Gamma by Jack Cole and Pat Corderman from Colorado Springs. An all-fiberglass model, it weighs 18 pounds with an O.S. 108 engine. This plane w ill soon be kitted by Jack. contact Robert A. Blaney, Secretary, 14 Parkview Rd., Long Valley, New Jersey 07853. This month I would like to talk about transmitters and the fact that we are not all using those two big sticks in the middle as much or as properly as we could. There are several ways to set up the average two-stick transmitter. The most common ways to set them up are described as Modes I, II, and III. Mode I is the traditional way to set up a transmitter for pattern flying. When we say a two-stick transmitter is Mode I, we mean that the right-hand stick w ill be set up to control throttle and aileron and that the left stick w ill be set up to control rudder and el evator. This means that for precise aerobat ics, we are spl itting the control of the eleva tor from the control of the ailerons. They are on opposite sticks and, therefore, when you control the elevator you w ill not inadver tently bump the aileron controls. Likewise, This F7F-3 Tigercat by Ed Sheldon and Bob Antonelle of CBA models is to be a kit soon. Pow when you are controlling the ailerons, you ered by two S.T. 2500s, the 'cat's span is 97 inches. w ill not mistakenly lean on the elevator. Mode I. This means that there w ill be fewer trolling done on the right stick, it is as Fliers of Mode I insist that it is more pre people around to train the newcomer to fly sumed that while controlling one function cise to split these two major control func Mode I. it is possible to inadvertently bump the tions. W hile there is merit to this, it must be Mode II, or Single Stick Mode, is the most other control and create an unwanted realized that it has its drawbacks. First of all, popular mode to fly. Almost all radios come response. most radio systems are not easily obtained this way from the manufacturer. This means Mode III finally is an easy way of taking a as Mode I from the manufacturer. They that elevator and aileron are located on the transmitter which is set up for Mode II and must often be special-ordered or converted right stick while throttle and rudder are lo splitting the controls as for Mode I. This at extra cost. With many of our more com cated on the left stick. This mode is claimed means that the right stick w ill control eleva plicated transmitters, conversion is not easy to be the most natural way to fly, as the right tor and rudder and that the left stick will to do, as it must be completely rewired so stick simulates a joystick in a full-size plane control aileron and throttle. Sometimes fac that mixing functions and dual rates will and does most of the major controlling. Its tory modifications w ill not have to be done work properly. Another drawback is that apparent drawback is what Mode I claims fewer and fewer modelers are flying on to be its strong point. With most of the con Continued on page 75
Wendell Hostetler's Lockheed Sirius on floats. It had vintage wheels Claude McCullough's Waco w ith trike gear. This model flew just as hidden in floats which allowed takeoffs from runway. Good flyer. good as it looks.
JANUARY 1989 25 By MITCH POLING
The unusual aluminum/air battery. See text. • We will take a break from motor theory ple matter to replace the aluminum plate. and let them dry. The electrolyte is just this month, and take a look at batteries, You might be able to just buy aluminum foil water and table salt, by the way. The instruc reader ideas, and new products. wrap and then fly all day! Well, not quite, tions say that the light w ill run for 12 hours W hile we are all waiting for that magic because the battery is not high power. The before the electrolyte gets too thick, and the breakthrough in batteries, there are some voltage per cell is about 1.2 volts, and the aluminum plates w ill last for 48 hours of ideas that are worth looking at. The "alumi current delivery is small, about 250 ma. running. The aluminum plate is 1-5/8 x 3-1/2 num battery" is one, and, with some work, The internal resistance is high. This may be x 3/64 inches. The two plates plus air cham I think it will have a market. Aluminum is due to the air membrane. I do not know ber plus light bulb are 2.75 ounces, the out made by the Hall process, which runs a how quickly oxygen can diffuse through it. side container brings the weight to 5.5 huge electric current though a molten mix Another problem is the product: aluminum ounces. It generates 2.4 volts, 250 ma. This ture of bauxite and cryolite to plate out the hydroxide. This is m ildly caustic, but not a would be 12 Ah in 48 hours. A 12 Ah nickel- aluminum. This hints that the reverse, health hazard unless you use it for hand cadmium pack putting out 2.4 volts would where the aluminum is one plate of a bat soap! However, it looks like Jello, it is thick weigh about 30 ounces, about four times tery, should work well. In fact, it does, and and gooey, and it is at least part of the rea heavier than the aluminum air battery. So, there is a battery marketed now that uses son, I think, for the low current delivery. do we have a breakthrough, four times aluminum as a plate. The company that Electrolyte flow through this stuff is proba more flying? Not yet, the aluminum air cell makes it is Alupower, Inc., Bernardsville, bly pretty slow, which, in turn, limits the needs quite a bit more engineering to solve New Jersey 07924.1 bought my battery from current in the wire. the low current problem and the gelling of Edmunds Scientific. It is billed as a "Reserve The battery is quite light; it is made of the electrolyte. If you want to play with one Light One," and is actually two cells in se plastic, aluminum, and air, so it should be! of these, send to Edmunds Scientific. I saw ries connected to a light bulb. It is a very If the current delivery problem could be their advertisement in Popular Science, un clever battery. The other plate is an air cell. beaten, it would have an excellent power- fortunately I have misplaced the address, This is just an empty chamber with porous to-weight ratio. It certainly has duration; I but they advertise nearly every month. walls that let oxygen diffuse through to ran the light all night (12 hours) and the alu Ben Almojuela sent a lot of good informa meet the electrolyte. The reaction is oxygen minum plate still had all its original thick tion about his Sig Skybolt powered by an plus aluminum plus water go to aluminum ness, though it was pitted. It can be reused Astro cobalt 60. Here is what he says: hydroxide. The battery is not rechargeable, easily; just pull the aluminum and air plates "I chose to build the Skybolt because I it is "one shot," but in reality it is a very sim out of the water/salt solution, clean them, had flown several gas-powered ones and found that they were easy to fly, handled well on the ground, and looked good in the air. Also, there is a special thrill about flying a biplane that just isn't equalled by a monoplane. I used the Sig plans, but com pletely revised the structure to make it lighter. The wing structure was almost en tirely 1/16-inch balsa, including built-up ai lerons from 1/16-inch balsa. The ailerons turned out to be even stiffer than solid aile rons. Fuselage sides were 1/8-inch balsa with 1/16-inch sheet for the curved top and bottom. The tail surfaces were 1/4-inch solid sheet for stiffness (no flutter). "The wings have 3/4 inch more chord and 2 inches more span than the Sig plans, for 900 sq. in. instead of the 790 sq. in. for the original Sig plane. All-up flying weight is 8 pounds, for a wing loading of 20.5 oz./sq. ft., the same as the gas Skybolt at 7 pounds, which is ideal. You cannot see that the wings are modified unless you have a stan dard Skybolt right next to it. "When I received my Astro cobalt 50 in the mail, I realized that electric flight mo tors could no longer be considered toys. This monster weighed 1-1/4 pounds and was capable of major damage if not used properly! I had not realized it comes with four brushes, not two, so I would guess it Ben Almojuela and his Sig Skybolt, powered by an Astro 60. could handle 40 amps, but I have never
26 MODEL BUILDER driven it that hard. "I've only used 24-cell packs for power, although Astro says it can run on 28. As in stalled in the plane, direct drive with a speed controller, fuse, and 24 sub C cells, it turns a Rev Up 12x8 at 10,000 rpm, a Zinger 12x9 at 9600 rpm, and a Graupner 13x8 at 7800 rpm. The best flight prop was the Graupner, even though it turned slower. Full power flights were 3-1/2 to 4 minutes with either of the two 1200 packs I have. One was made of Sanyo cells from various packs of different ancestries; the other was made of fourcheapie six-cell Sanyo packs I got from Indy R/C. "I used 14-gauge automotive w iring and 1/4-inch spade lug connectors, all from Shucks Auto Supply. The motor came with #16 wire and mini Molex plugs, which I did not use. However, on the last day of flying (see below) I changed to Jomar #12 'Killer' wire and Sermos connectors plus the Graupner prop. All this resulted in a definite improvement in performance, but I The new Jomar charger that w ill take care of charging up to 28 cells. don't know how much was due to each change. "I used a Jomar SC-4 speed control, and later I added a 30-amp fuse and arming switch after I 'smoked' the SC-4 when I plugged in the power pack (No fuse, no arming switch! Ouch! MP) with the prop pinned down in the grass. The fuse has never blown since I added it, so I guess I have never pulled more than 30 amps through the motor. "I used Goldberg Ultracote to cover the plane. It is nice to work with, but rather heavy for smaller electrics. The red and white color scheme is the same as Norm Tobison's full-scale Skybolt. The radio was a standard Futaba four-channel; landing gear was the standard aluminum Hallco with 2- 1/2-inch JZ plastic wheels, which are very light. 'The first flight was at the 1987 Hawks Electric Fly-In, and it flew well on a 24-cell 800 mAh pack made of 12 cells of my own plus 12 borrowed from Bernard Cawley. Later on I installed the 1200 packs and have Jomar's SM-4 electronic throttle. flown it that way ever since. 'The plane is a dream to fly. Rolls even have the slight barrel-like motion charac teristic of biplanes. It loops well, snap rolls and spins are very controllable, and land ings and takeoffs are easy. It impresses the gas fliers, even those who have to have thrust ratios exceeding one! "I usually use the plane for fun flying and demonstrations, but I did enter a couple of AMA Sport Aerobatics competitions and did fairly well. The limitation on my scores was due to the pilot, not the plane. I haven't flown an eight-pound plane for quite a few years, and it took some re-education to get 'back in the groove' with an airplane that has a lot more momentum than my three- pound Prairie Bird! "Unfortunately, a year after the first flight I had an accident during the 1988 Hawks Fly-In. I flew a square loop, but all I got was a figure 9! I suspect an elevator servo or ra dio failure. As in every hard crash, the bat tery found its way to the front of the plane and wiped out the speed controller. The
Continued on page 77 The new folding props from Sonic-Tronics, for electric models.
JANUARY 1989 27 Professor objected to doing even the most rudimentary barrel roll, and it really drew ALL ABOUT the line at inverted flight. Charlie cut the throttle and brought her down low to do a few slow passes for the camera. These com pleted, he proceeded to climb back up to about 300 feet. We took turns flying in big lazy circles, turning the motor off and on in ARFS termittently. After nearly nine minutes of al By ART STEINBERG ternating between power-on and gliding, the six-cell 7.2-volt Ni-Cds were pretty well drained, so Charlie set her up in a nice flat • It was a beautiful and balmy Friday after ready for him to begin. He held the model approach and brought her in for a slick and noon in southern California, and as I stood above his head with his right hand, the gentle touchdown. He then put the Profes there on the dirt runway deeply inhaling the transmitter in his left, faced due west into sor on a field charger, which was plugged fresh air blowing in from the ocean, Charlie what had by now become a strong 20-knot into his dashboard cigarette lighter, and Onstott drove up in a cloud of dust. He breeze, and switched on the power. The lit twelve minutes later we had a fully parked his car alongside mine and we ex tle Mabuchi motor hummed quietly, and recharged battery. Next, even though the in changed greetings, after which he pro with a graceful and practiced forward throw struction book recommended only hand ceeded to unload the attractive little model he had the model airborne and climbing at launches, I decided we just had to attempt from the back seat. He next rubber-banded a 45-degree angle. It continued gaining alti an R.O.C. takeoff. We were a bit apprehen the wing to the fuselage while I checked my tude, its wings holding rock steady, seem sive about trying this on dirt, but we figured camera to see that all was in order. I was ing entirely oblivious to the strong head we had nothing to lose. Again, with Charlie really impressed with the sleek, handsome wind. At about 200 feet, Charlie brought at the controls, he aimed her straight up appearance of the diminutive electric- her into a right turn and leveled off. We wind and turned the power on. The Profes powered ARF, and as I took a series of still were both surprised at the way this little sor tracked straight ahead, lifting her tail off photographs, I knew that I could count on model responded so smartly to every com the ground at about 20 feet, and by 35 feet an appealing picture for my next column. mand. Next he tried a few loops, which into the takeoff run she was off the ground It all began only a week before when I were easily performed. The diminutive and climbing just as smoothly as from a received a kit of Futaba's latest offering, the Hirobo Professor. The model had the stan dard sport-trainer configuration, a cabin- type fuselage sporting a high wing with a flat bottom airfoil. All this was supported by a tail dragger configuration landing gear. All structural parts were beautifully pack aged, and all that was necessary was to as semble the two halves of the wing and glue the tail feathers to the fuselage. About all that was left to do was to attach the landing gear and install the electronics. Pushrods were pre-made and were of just the right length. Already mounted in the fuselage was a Mabuchi RS540SH electric motor with a 3:1 reduction gear. I telephoned Charlie and asked him if he would be w ill ing to assemble the Professor and test-fly it with me. Without hesitation, he graciously agreed to take on the job, and the next day he dropped by to pick up the kit. After he devoted only about two hours to assembly, I was informed that the model was ready for testing, so we arranged a meeting the fol lowing Friday afternoon. As I completed my preflight shots of the Professor, I gave Charlie the signal that I was Bell P-39 Aircobra by Sure Flite and its proud owner, Mark Silzle. An easy-handling scale ARF.
As the Professor makes a low pass for the camera, one can sense its solid flying ability. Futaba's Professor at bay, batteries charged, ready for its next flight.
28 MODEL BUILDER hand launch. This flight was a repetition of the first, and even lasted a minute longer, much to our surprise. As for the vital statistics: wingspan is 49 inches; flying weight was 2 pounds, 14 ounces; and wing loading came out to 16.1 ounces per square foot. The manufacturer lists the ready-to-fly weight as only two pounds, so I don't know exactly where our extra weight came from. We did use mini servos as recommended, so we were at a loss in accounting for the extra 14 ounces. However, I subsequently arrived at a plausi ble explanation for most of the weight dis crepancy. During testing of the factory pro totype, the Futaba people must have used their new S33 servos, each of which weighs only 0.6 ounce! (See Model Builder Oc tober 1988 fora detailed report by Eloy Ma- rez on this remarkable micro-servo.) Fur thermore, Futaba has a tiny receiver which incorporates a built-in variable speed con troller, and this was almost certainly in stalled in the prototype for an additional saving of weight. In any event, the Professor handled the load very nicely. Instead of the recommended motor controller, Charlie in stalled a simple servo-operated on/off switch. He did this because he felt that proportional speed control is rather un necessary in a novice-type electric- powered model of this size, where you really need all the power you can get. He felt that a beginner would be unlikely to purchase a motor control amplifier for his first simple electric model anyway, because of the relatively high cost. We finally reached a number of conclu sions about the Hirobo Professor. The kit is quite complete, goes together easily and quickly, and the parts fit is excellent. As in many Japanese kits, the directions leave something to be desired, but diagrams are self-explanatory and assembly should go smoothly even for a beginner. Any modeler who purchases this or any other electric- powered airplane should keep in mind that a substantial investment in additional elec Quarter-scale Knight Twister by Don Fairbanks sits alongside its full-scale counterpart at Reno. tronic equipment will be required. In this case the motor is supplied, but the flight battery and charger must be purchased separately, and they are not inexpensive. However, once these components are ac quired, they w ill last indefinitely. W hile a larger airplane is much more preferable for training purposes, the inher ent flying stability and smooth, slow re sponses of this model would certainly per mit basic R/C flight instruction. Neverthe less, the real purpose of the Professor is to serve as a good introductory model for elec tric flight, and not as a trainer for a novice R/C pilot. On the other hand, its small size allows it to be carried around easily in any vehicle, always ready for a quiet flight in al most any reasonably sized open area. The color scheme is a brilliant red and white, making it highly visible at most distances. Both Chari ie and I found it to be a lot of fun, and we enthusiastically recommend the Professor to anyone interested in getting a foothold in the exciting field of electric R/C flight.
Number One son congratulates his idol Bob Hoover on completion of an outstanding flight Continued on page 78 demonstration at the Reno A ir Races.
JANUARY 1989 29 mediately built and presented to John Frisoli as a completed project without a sin gle test flight! The design was immediately kitted and proved to be the most successful gas model kit of all time, a tribute to Zaic and Schmae dig who made no further changes. What p m S P A R K S for? The first model dramatically demon strated how it could fly. I ' By JOHN POND For this reason, when Carl decided to build another Miss America (50 years later), this writer asked for Carl's observations and • As mentioned in the previous issue, we proved to be their undoing. opinions on the performance of the "new" are proud to present the comments by the In those days, shutoff timers were un Miss America. O f course, 50 years makes original co-designer and builder of the Miss heard of and engine runs were limited to an old man out of you in a hurry, so the America, Carl Schmaedig, retired and now the amount of fuel put in the gas tank. Carl model built was radio-controlled. One sim living at 313 Sutton Circle, Apt. 127, Day and John reasoned they would use a ply cannot chase models anymore like we tona Beach, Florida 32014. hypodermic needle body as a tank so as to did when we were 21. In any respect, let's Some background is in order (although it carefully meter the fuel. hear what Schmaedig has to say about his has been written in this column before) in Alas! The best plans of men and mice al "Grand Old Lady" with no disrespect that this free flight gas design was origi ways go astray. They had not made al meant to the term "old." "I had to wait quite nated by Frank Zaic based on Carl's original lowances for the superior economy of the some time as the winds would not subside nine-foot design that appeared in 1936 is Baby Cyclone, which would run two to although the heat of 90 degrees F did not. sues of Model Craftsman. three times as long on the same fuel. Finally, one early morning on July 15,1 took When Frank Zaic was approached by The boys gassed up the new model (after the Miss A for some flights and she )ohnny Frisoli of Scientific Model Airplane a few test glides and "guesstimates" on the proceeded to give us some interesting Co. to produce a design for a gas model kit, trim) and fired up the engine. One could lessons. Carl carried the ball on this by constructing not ask for a better performance, as the "Weight was 4-3/4 pounds complete with the first Miss America. model took off flawlessly, banked gently to Airtronics radio with three servos (rudder, According to Carl, they were under con the left, and proceeded to climb into the elevator, and engine control) utilizing a siderable pressure to get this design into a blue. With the amazing economy of the Saito 45 four-cycle. Remarkably, the model production basis. So when Carl completed Baby Cyclone, the model was soon a speck, was the same weight as the original." To get the model, they took it to the nearest availa never to be seen again. a good idea of what the original model ble site. Although designed for a Brown Jr., This caused considerable consternation looked like, Photo No. 1 shows Carl with an a Baby Cyclone engine was employed. This to Frank and Carl. Another model was im orange and grey colored Miss America.
2. Excellent closeup of No. 3 Miss America with gray dope and 1. Carl Schmaedig and his third Miss America built 50 years after orange trim . the first two prototypes.
4. Schmaedig did a beautiful job of framing the Miss America with 3. The moment of truth! The first takeoff, straight as a die! original-type framing methods.
30 MODEL BUILDER 6. A pair of red hot rubber modelers, Ernie and Jack Phelps, both 5. Flat Tire Myers, SAM 49. Read the text for his unlucky saga. of SAM 56, Wichita, Kansas.
7. Another SAM 56 busy modeler, Dan Smith, with his fleet of gas models on display. 8. A Schumacher Candid scaled for 1/2A Texaco by Mort Ross. "M y first concern was the location of the landing gear. Being well forward, would it taxi properly and end up by ground looping all over the place (a malady induced by in correct placement of landing gear) with the gear at least nine inches ahead of the CG?" Photo No. 2 shows very clearly the forward location of the landing gear (to protect those precious hand-carved propellers). Note the use of Trexler wheels still being produced after all these years. "Surprise! No problem! With a wheel base as long as the fuselage, there was no problem, as there was plenty of weight on the tail wheel. The steering turned out to be rock solid and precise. The Trexler air wheels and her soft-sprung gear com pletely ignored the bumps, grass tufts, holes, and undulations that cause many a broken prop in the regular pattern models. The prop on Miss A rode high and dry w ith 9. Walt Eggert coaxes his Brown Jr. in his original Eaglet design. out raising any dust, sand, or dirt. about. "As in most free flights, the takeoff results "Lining the model on the runway, the en "No elevator control was given. In in a zoom, so I was looking carefully for a gine throttle was opened up and Miss A retrospect, it wouldn't have changed any stall. At about 50 feet, the rate of climb proceeded straight down the runway. Since thing, as the tailwheel remained on the slowed, dropped the nose, and then settled Miss A was a free flight design, I decided to ground during the takeoff with all parts into that nice free flight climbing left turn. use the radio only for correction, if needed. leaving the ground simultaneously. The an The old girl was showing me that all I had to She was quickly airborne in an easy left- gle of clim b was the same as the takeoff. No do was to bring her back to the runway. hand turn and surprising steep climb." rudder corrections were given as generally "The wash out, built into the rounded Photo No. 3 shows what Carl is talking required by tail draggers. wing, was creating a semi-symmetrical sec-
JANUARY 1989 31 10. C liff Silva, now of Fallon, Nevada, likes them big; here's a Mike 11. Seen at Goulbourn, NSW, Lonel James flew this nice Shereshaw Roll 13-foot model. Champion. Photo: Abell.
Jte
An Atom Mi nor Mk III, machi ned up from castings by Bruce Abell. Turns 5,000 rpm with 14x5 prop. lion that did its thing; no stall." (No tip stalls.) "Throttle response was most gratifying; at full throttle, a 40- to 45-degree slow steady climb. Low throttle gave level flight and very low throttle resulted in a very slow descent. Back to Carl again: catch up in the form of the glow engine. In "Response to rudder was predictable, "To say the least, I was delighted with the response to this, Shulman redesigned his much like a glider. Biggest surprise was a performance and only regret Frank Zaic did engine to include many new features, such 40-degree roll was necessary to get the not see his design doing its thing. Frank as ball bearing crankshaft, heavier mount nose to drop. No trace of that old debbil didn't know it, but he designed an excellent ing lugs, removable front bearing plate, and spiral dive. Another surprise was when R/C Trainer. The model is extremely easy to a replaceable bolt stud to hold the propeller heading downwind, a considerable fly and is a superb trainer, lust wait until to the shaft. amount of rudder had to be applied to Frank sees the videotapes taken of the A novel and clever new design of the cyl make a spiral dive to the runway. Nice turn, flights. inder head provided a recess fit over the cyl no dive! Took lots of down elevator to lose "I just can't seem to keep Miss America inder liner. This was Shulman's answer to that last hundred feet. Some difference models around the house. This #3 model most of the requests for a variable compres from a pattern ship! has been given to the AMA Museum. One sion head. Although limited in compres "Landing was almost laughable, as low of these days, I am going to build one just sion ratios, one could still make changes to throttle did practically nothing to lose alti for me." Now how about that? This writer compensate for climatic changes and dif tude. Finally cut the throttle entirely with a has been after Carl for a long time and is ferent fuel combinations of ether, kerosene, resulting flat glide that noticed a few ther simply delighted things worked out so well. and oil. mal bumps and gained altitude. Only rud ENGINE OF THE MONTH The basic compression of the Drone was der was used and two 500-foot circles were This month's engine is through the 18-1/2 to 1 (same as the MK I); however, the a result before coming in. courtesy of George Finato, well-known weight was increased by a 1/4 ounce to 9- "I could have used down elevator, but I diesel engine collector. What else would be 3/4 ounces. Other features that were re wanted to maintain as much of the free more appropriate than to obtain the Mark II tained was the .297 cu. in. displacement flight character as I could. So I resisted the version of the Drone from George? derived from a stroke of 7/8 inch and bore of temptation to flare the model and let it As previously reported in the February 21/32 inch. Performance of the new engine, come down hard on that springy landing 1981 issue of Model Builder, the first Drone as indicated by strobatic tests made by the gear. Did it bounce! was produced by the Drone Engineering Flying Aces gang, gave 6,200 rpm with a "I regard the landing gear as a pogo stick Co. as designed by Leon Shulman. One can standard 11-inch, 10-pitch Drone propeller, in slow motion. No damage to the model or see the influence of the French Micron en 9,700 rpm using a 9-6 prop, and 6,000 rpm propeller. All subsequent flights were much gine, as Leon did spend a considerable with a large 14-6 prop. For those who like the same. The problem is that the Miss A is amount of time during World War II in top figures, 12,500 rpm was obtained using light and quickly affected by crosswinds. France. an 8-ounce flywheel. This requires careful alignment in taking off Initially, the engine was quite successful One of the desirable features of the and landing." As can be seen in Photo No. winning control line stunt events. Shulman Drone engine for control line stunt was the 4, Carl did a beautiful job in framing the did a fine job of promoting the diesel engine's ability to maintain constant rpm Miss America. Total all-up weight is only 4- engine. with a large prop throughout the maneu 3/4 pounds, which indicates a floater glide. Inevitably, the competition started to vers. This is the very thing that Duke Fox
32 MODEL BUILDER 14. Australian O/T columnist, Colin Borthwick, wins the Queensland 15. Des Slattery's smile belies the pain of having been cracked by State Champs Texaco trophy. the Cox engine in his Banshee. was able to perfect in his Fox 29 glow en craft U.S.S. Kearsarge (CV-33). (I had signed ten me into modeling. This phase of flying gine. When the Fox engine hit the market, up for another hitch in the Navy.) This oc is a great way to go! Have a cold beer on all other Class B engines used in the C/L curred about 600 miles west of Pearl Har me." (Now how did he know of my Stunt event were displaced; ironically by bor. The Kearsarge was doing about 30 penchant?) the very thing that sold the Drone, a con knots with a following wind of 30 knots, "FLAT-TIRE MYERS" stant source of power throughout stunts. giving practically calm weather on the Even the title has a euphonious ring to it, The MK II Ball Bearing Drone was later flight deck. Both lines broke and the last I but the tale of woe by Ken Myers certainly succeeded by an engine fitted with a varia saw of my green head Torpedo 35 and the emphasizes Murphy's Law, "If it can go ble compression head. When this did not Ringmaster was floating aft. No chance to wrong, it will." Our saga begins with Myers increase sales, a glow head model was recover that one! making the long trip from Los Angeles to offered in 1950. However, by that time, K&B "Two or three years later, I found a witness Marysville in Northern California (a mere Torpedo was firm ly entrenched in free to this incident when I met Cliff Wierick, 486 miles!). Photo No. 5 is not the most flat flight, while the "only" engine in stunt was who had run the hobby shop in that 'rust tering of Ken Myers but after the trouble he the Fox 29. Hence, it is no great surprise to bucket.' Cliff told me that I really chewed had you would be hollering too. Let's hear see these same engines (modified over the him out for selling poor lines. I had forgot what Ken had to say about this king-size de years) maintain their superiority. ten but, knowing myself, Cliff was probably bacle. (This fore shortened account taken Another contributing factor was the lack right. from SAM 49 newsletter.) of diesel fuels (only two companies pro "I have been out of the Navy since "When packing a car, make a checklist duced this) while a myriad variety of glow November, 1954, and have been married for (This writer finds them invaluable, jp) and fuel was offered. Modelers, like any other 36 years. My wife doesn't care too much for then use it! Upon arriving at Marysville, I shoppers, always take the item which is the models or modeling (Join the dub, Nick, found I had left every blasted transmitter most readily accessible at the dealer's shop, jp), but I would say she is reconciled to a home! and performance is much more easily guy that does models. "Well, thanks to Nick Nicholau, who attained. "I have joined SAM and I am a member of offered any model to fly; John Pond, who Interestingly enough, about the time the SAM 8. This old timer game has really got- insisted I use his transmitter and airborne Drone started losing popularity, so did all the other diesel engines being produced in
the United States. Μ K FIFTY YEARS AGO, I WAS. . .. n Received a most interesting letter of C. N. (Nick Rankin) whom this writer met at the DOOMDRAWN BY JOHN POND B Reno West Coast SAM Champs. Nick thoroughly enjoyed himself there; hence, - t l the reason for this letter. Nick had this to M O U N T say: LAYOUT I ,e/le "The Plug Sparks column in Model Builder is always interesting to read, as it deals with fellows modeling 50 years ago. 3 r / i e “ In Kentucky during the depression, we were too poor and too far back in the "sticks" for me to have seen a model, let alone an engine. "In 1941 I saw my first engine. A good ί friend of mine had a Baby Cyclone in a Cleveland Cloudster. Unfortunately, he never flew the model. So the first model I saw fly was a free flight powered by an Atom 3 7 / » · ^ V 09. This I witnessed in the summer of 1946 H J o in Kentucky after I got out of the service. S C A L E "Later that year I bought an Ohlsson 23 and built a Megow Ranger. It flew great! I was hooked and have been flying those 'damn toys' ever since. (The 'damn toys' was H my father's appellation.) "About the only claim to fame I have in the modeling game is I flew and lost a Ring Ϊ master (control line) over the side of the Air-
JANUARY 1989 33 17. Two Italian old timers by Arve Mozzarini, 1949 Oindi, and an 8- foot Moar, Brown Jr. powered. 16. Nice blue and yellow Moyer Cloud Cruiser by Les McKay. unit from his back-up model; and Don Be- tire exploded! Imagine what would have "Somewhere in the desert between Ket kins, for his 'Dial-A-Crash' Transmitter that happened on the road if the tire blew up tleman and Lost Hills on Hwy. 5, there is a had to be watched, as some of the servo ac then. pretty quartz crystal lying in the desert just tions were reversed. "I changed the tire and found the spare waiting for some lucky soul to find it. That "Saturday was a great day with no wind. was low on air (plan ahead!), so I borrowed w ill be a story for someone else." To assure myself everything was in order, I a foot pump and limped into the town of SAM ACTIVITIES tested my 1/2A engine. The engine back Kettleman. The attendant changed the tire SAM 56 fired three times and flew into my face. and checked the air in the right front. The The WHAM (Wichita Historical Airplane Enough of this! valve stem fell off in his hand! What the Modelers), SAM 56, well represented by Er "Electric Texaco started out really well heck, I felt better with two new front tires. nie Linn, editor of SAM 56 Sez, sent in quite with a max 15-minute flight on only a 90- "Something was not right. O nly 12 miles a few photos taken by Dan Walton at their second motor run! Hot dog! Second flight: down the road, the left rear tire blew. Okay, June 4 and 5 fun-fly. a 4-minute motor run with barely the same mounted the spare which had been fixed. The rubber events are quite popular in time in the glide; blew it, got a third. Didn't The tire lug wrench broke. the Wichita area mainly due to the efforts of do much the rest of the day's events, so why "After a three-hour wait in the desert, the Ernie. Worth noting is the announcement of enumerate the difficulties? CHP showed up and called a tow truck. the W H AM Second Annual features three "Sunday was another lovely day, so I set Upon arriving, the tow truck driver refused rubber events out of ten while the Glue up camp to do battle. The first flight of the to tow my 'low rider.' Dobbers meet being held in conjunction Limited Engine Run Electric Event was a "What to do? It cost $50 to borrow his lug w ill feature two out of eight. With better max. Cot this event wired! Second flight wrench and mount the spare. I prepared to rubber being made available, interest in was a ground loop, destroying the spur gear drive slowly to the next station 15 miles rubber power has picked up considerably. of the reduction unit. Thanks to Jack Alten, down the road. Can you believe it, the right Photo No. 6 shows what we mean with who is a one-man repair station for electrics rear tire blew. I was towed into the next Ernie Linn holding his original Kansas on the field, I was quickly repaired and town at 22:00 (that's 10:00 p.m. for you airborne. landlubbers). Continued on page 70 "Now what? Something was definitely wrong with all the weird maneuvers the model proceeded to perform. Finally shut ting off the motor, five minutes later, I was able to put the model down in one piece. "Examination showed the entire motor assembly had come loose from the firewall and had wound itself up in the connecting wires to the microswitch. How it ever held is one of the 'unsolved mysteries.' "Third flight, still in contention, let the model go and the prop and hub assembly promptly flew off. That was it. No more gear assemblies available. I was an also-ran in Jim Robinson's Li'l Misery, this month's Old Timer. the other events with further misadventures too numerous to print. Design by: Dick Cohen & "Ever have premonitions of impending John Worth disaster? After what happened on the return trip on Monday, I am a believer. Someone I I I m i s e r y Text by: Bill Northrop told me about Sal Taibi's recent accident Plan by: Phil Bernhardt where he blew a tire and rolled his 1958 • We just met this Old Timer of the Month, only natural to enter the flying wing power Chevy. I was completely overcome with in person, only a few weeks ago. It was at event with O ld Timer wings! helplessness until a friend of mine gave me the 22nd annual Northrop Flying Wing The model, "Li'l Misery," was published a quartz crystal he had mined. I was assured contest at Taft, California, Sunday, October in the July 1942 issue of A ir Trails and was this would change my luck. 3rd. Actually, we met two of them. One was credited to co-authors Dick Cohen and "The feeling of disaster still lingered as I built by Dick Lyons, of Camarillo, and the John W o rth ...ye s, it's the same John started for Los Angeles. With only 150 miles other by Jim Robinson, of Pasa Robles. Both Worth. The 50-inch span model was de gone, the 1951 Mercury began to shake vio modelers were there to "kill two birds," as signed for the Atom engine, and a Cox Baby lently. Slow down to 50 and the oscillations the SCIFS Annual was on the same week decrease. At the next rest area, I pulled over end, both Saturday and Sunday, so it was Continued on page 75 and I took the car out of gear. The left iron*
34 MODEL BUILDER c o ^ i T i u n k
By MIKE KEVILLE. . .As control line flying continues its resurgence in popularity, here comes an excellent-flying version of the aerobatic Chipmunk. This foam-winged beauty responds to the touch of the novice as well as the skilled flier.
• As you may have noticed, control line fly ing is making a strong comeback across the country. Several "cottage industry" firms, and one major manufacturer, currently pro duce sport and competition kits of excellent quality. Cox Hobbies, Inc., long-noted for their ready-to-fly C/L and R/C designs, now offers this .049-powered Super Chipmunk, a foam-winged stunt trainer spanning 30-1/2 inches. Back in the mid-70s, they tried this ap proach with similar designs and materials, but for some reason those never caught on and were dropped from their product line. With the current increase in control line ac tivity, this re-engineered version may do the trick. The Super Chipmunk is a step beyond the toy store image, for it's a genuine flying machine. Cox advises that the model is not intended for first-time fliers, but rather for those having "...successful experience with beginner planes." (We might question that, feeling that this design is, in fact, easier to fly than most of the lower-priced, over weight, and skittish "trainers" so often seen few years!) John was very clear with his re and actual flying, and are likewise very in the hands of beginners.) Needless to say, quest that we don't "whitewash" this prod thorough. the more advanced/expert fliers w ill also uct with a rubber-stamp approval, but All components are securely packaged. enjoy putting this one through The rather that we give an honest and candid Protected by a sturdy cardboard cradle is Pattern—as we w ill illustrate below. evaluation. With that in mind, be advised the molded plastic fuselage, with integral This reporter is far from being an "expert" that: What you read is what you get. stabilizer/elevators and bellcrank/pushrod (pause here for a chorus of loud agreement The model is attractively packaged in a assembly. The molded foam wing, featur from local modelers) but can read instruc large and brightly decorated carton. Bear ing a symmetrical airfoil, is likewise well- tions and stumble through the AMA Preci ing in mind that it may be purchased by protected. Two poly bags contain all other sion Aerobatics pattern, although many those with no experience whatsoever, a by- components, including a plastic flying han judges fail to recognize it as such. A phone the-book assembly was mandatory (actu dle, a spool of Dacron flying line, and a call from WCN, requesting the review, was ally, it won't go together any other way). As really slick little Stunt tank. As with any kit, followed by a UPS delivery from Cox, and a sembly consists of four steps, using a well- all parts were laid out on the workbench chat with their John Elliot. (Yep, that's "Big illustrated set of instructions. Steps 5 and inventoried prior to assembly. John," for those of you who also go back a through 20 deal with preparation for flight We purposely did not break-in, or even
The lower nose piece hold downs. Engine is the venerable Cox .049; The components of the Chipmunk by Cox, all laid out for inspection. prop is a black Cox 6-3 with a soft spinner.
36 MODEL BUILDER test-run, the engine (Cox .049, Cat. No. 00021926) at home, as potential users of this product are unlikely to do so, and we wanted to anticipate their (assumed) expe rience level. The engine comes equipped with a Cox black 6-3 prop and a soft spinner. Assembly took us 12 minutes; attaching the press-on trim colors, about 20. (That's just our pace. We know a certain combat flier who could probably assemble a dozen of these on his lunch break.) Anyone who can read, or interpret illustrations, won't spend much time on assembly; the instruc tion sheet is that clear, and rates an "A+." No adhesives are required. All components are held in place with rubber bands, screws, or they simply snap into place. Some minor flashing was removed from the edges using a sanding stick and 220-grit paper, then all plastic parts were washed in a mild solution Mike Fox tunes the easy-starting .049 at W hittier Narrows during a test session. of lukewarm dish soap and water to remove any residual mold release and allowed to One departure from the recommended dry. The engine and tank are connected sequence was to apply the press-on decora with a length of fuel tubing (supplied). tions before assembly. It seemed much eas These are inserted into the fuselage shell as ier to position them correctly on the in a unit and covered by the lower nose piece, dividual pieces, especially the vertical fin, Author's daughter, Karen displays the com which is an exact fit around the rudder off which is held in place with rubber bands. pleted model. As supplied, our length of fuel tubing was set and the elevator-joiner piece. To help too long and would kink when enclosed. seal and preserve the markings, we applied We removed about 7/8 inch and it fit per a sealer of thin polyurethane to all edges. fectly. To Cox's credit, it's always better to Then it was off to W hittier Narrows for flight have too much of any material in a kit; how testing. ever, we've suggested they include a note For this evaluation, we used the dacron about trimming this to length ("Why won't flying lines and plastic handle supplied my engine run, Mister?"). We also suggest a with the model. The engine started on the careful cleaning/washing of the plastic first flip, using its spring starter. Peak ground tank. HalfA’s, especially reed-valves, take a rpm, on Cox sport fuel, was 12,100. In dim view of any amount of foreign matter. verted, this fell to 11,600. These figures The tank, incidentally, is worth noting: cor should increase as the engine gets more rectly vented for stunt, it is of ample capac running time. Takeoffs were smooth. New ity and may become a hot-selling item on fliers should have no problem, for it tracks its own. Also commendable is the built-in steady in level flight. We tried a few mild engine offset to help maintain line tension. maneuvers: inside and outside loops, lazy The one-piece foam wing is installed eights, and inverted flight. Being somewhat next. A plastic leadout guide is inserted, nose-heavy, the plane needed to be flown then the wing is placed into the fuselage in wide maneuvers, otherwise it tended to "saddle" and covered with the fairing pro stall and mush. We felt that it could use a bit vided, being fastened with three screws, the more power, but that may have just been the Note engine offset for proper CL flying. longest of which also secures the bell- new and tight engine. We pancaked it into crank/pushrod assembly in the fuselage. As the asphalt a couple of times with no dam mentioned, the wing has a symmetrical air age. It's tough! foil. It's not a thick section but is adequate The model turned better inside than out and won't produce as much drag as a side, yawed somewhat on square corners, thicker section—critical on small models. but was very forgiving and easy to control, There are some minor protrusions on the and tracked the same when upright or surface, probably from the molding inverted. process, that we removed with light sand For the "acid test" we turned the handle ing. This was to help the press-on decora over to Nationals Stunt winner and USA-FAI tions adhere better, but primarily to round Team member, Paul Walker, who proceeded the LE completely and (hopefully) decrease to take off and fly most of the AMA pattern, the stall speed. although to be fair, it should be noted that he Next, the wire landing gear is snapped in could probably score 500 points flying a place. This is supplied with lightweight drill press. He had to work at it, owing per plastic wheels installed. Then the vertical haps to the amount of power available, but fin, with built-in rudder offset, is installed, he did manage such things as horizontal and the markings applied to the fuselage, square eights and outside square loops. We fin, and wing. Followingcareful application then departed from procedure a bit and on the frame trim, the canopy is snapped refueled with 40-percent nitro fuel, which into place, and the model is ready to fly. perked-up performance considerably. Paul The completed aircraft presents a striking was obviously enjoying it (as was the "au attractiveness to spectators. One youngster dience," which includes stunt expert Tom was heard to say that it looks "rad," which Warden and the racing team of Mike (for those of you who may have been in Paul Walker, Nats Stunt winner and FAI team Fox/Don Repp), for he asked for several Outer Mongolia the past two years) implies member, putting the Chipmunk through an an extreme degree of acceptance. outside loop. Continued on page 76
JANUARY 1989 37 I found the club name interesting be cause it is similar to one of the Pacific Northwest's clubs, one of which I was a charter member in 1976, the North Coast Control Line Aero Modelers' Society (CLAMS) of Astoria, Oregon. I don't know if BY JOHN THOMPSON there's the same connection in the case of the Australia group, but in Astoria the acro nym was a tipoff to one of the more sought- • The mail received by this column seems on some activities of the Control Line Air after seafood delicacies of the local to parallel what I've been hearing from peo craft Modelers Inc. club (CLAM). Peter also beaches. The club for a time had a "mas ple involved in the manufacture and sale of sends along a couple of copies of their de cot" in the form of a "flying clam." But on to products for use by control line fliers: Con tailed and excellent newsletter, Circle some excerpts from Peter Harrison's letter: trol line as a hobby is enjoying a new, excit Torque. True to the promise on the cover, it "I hope you enjoy reading our club maga ing period of growth. includes club news, articles, building hints, zine, Circle Torque. I am the new editorand My mail almost daily brings notes from and contest rules. enclose No. 1 and 2 of Vol. 15. fliers in various corners of the United States and abroad as well, some of whom have discovered, after flying alone for some time, that there are others in their area. Having just returned from a contest my self, I also continue to be encouraged by the number of new faces, and of old ones re turning to the flying field. This prompts me to repeat something said in this space before: Check your local hobby shop and the contest calendar pub lished by the Academy of Model Aeronau tics. You may find that there are people fly ing in your area that you never knew about. I make this observation with one eye on a two-inch thick folder of mail that has piled up in the past few weeks. That means it's time to open some of those fascinating let ters and pass them along in the interest of spreading the word about CL from one point on our big circle to another. MAILBAG On top of the stack is a letter from Peter Harrison of Victoria, Australia, with a report Lee Hoffman's first gas model, circa 1937, a Stanzel Tiger Shark, powered by an Ohlsson .19.
srffiJJeL Γ/ce* s/s/iAx whip ce/yr/tei- co* v t K r u j) t"c υ/c . 19* 7 Lee's Tiger Shark with the landing gear moved to the rear, and con verted from whip control to U-control. Also about 1937. The 1937 Ohlsson 23 showing the tank mounting and M&M wheels.
The Stenzel Shark with an Ohlsson .60, converted to dual line con- The Stenzel Tiger Shark repainted in 1940 to reflect the wartime trol. Wingspan is 24 inches. conditions. Estimated air time, 20 hours.
38 MODEL BUILDER "Beinga newcomer into active modeling, my friends tell me that there has been a newsletter in existence for much longer than 15 years; they think at least 20 to 25 years or so. "Control Line modeling in Australia, of course, dates back much further than that. There are much better qualified people around than me who can speak with authority of the early days in Australia. “Our club, Control Line Aircraft Modelers, Inc., is very active in Melbourne. All classes are flown in competition, in lo cal, state and national, and occasionally in ternational level competitions. "Our flying field is located on the local light aircraft airport, Moorabbin Airport, an attractive and popular site graciously pro vided by the Federal Department of Transport. "We do not run a clubhouse; our over heads are kept to a minimum to keep the sport attractive to those who may not have a Frank Bowman sent this photo of his dad Charles' ignition speed plane. Date is mid-40s, but large disposable income to spend on con engine and top speed are unknown. verting perfectly good balsa wood and alu shire St., Blackburn, 3130 Victoria, Austra can spend enough cash with models that minum into match sticks and paperweights; lia, and Frankstrom & District Model Aero only go 70-feet high.) e.g., people like me. Club (FADMAC), d o Graeme Wilson, P. O. "I recently traveled to Sydney and was a "Models I am building at present include Box 298, Seaford 3198, Victoria, Australia. participant in Big Art Adamisin's 'Down Un a Cordon Burford Taipan 1.5cc diesel- "There are, of course, several other clubs der Stunt Clinic' held just before the New powered 'Jitterbug' for the Knox Vintage around Melbourne, and all if not the greater South Wales State Champs. Big Art was very comp, as well as a Supertigre 'Genesis 46' majority are members of the VMAA, Vic popular and was able to encourage us to try fo r m yself and a PAW 1.5S 'M in i torian Model Aircraft Association, and are harder to improve our stunt flying. There Goodyear—Mike Argander Special' for my through this body members of MAAA, the were some marked improvements by the 12-year-old boy, Model Aircraft Association of Australia. time the actual competition started.... "The main CL clubs near me are: Knox "The above clubs are solely CL clubs; ". . We are especially interested in en- Model Aircraft Club (KMAC), Peter however, there is a very strong Model Rail Rowland, Editor (KMAC News), 12 York ways of the Sky fraternity active here. (We Continued on page 101
Charles Bowman's restored Pete from the mid-40s-50s. Engine is not The Buzz Bomb, an original. Cyclone-powered model by Charles Bow identified. man. Also mid-40s.
A McCoy .60 ignition engine converted to glow to power this speed ship. Best recorded speed was 129.03 mph. A Dooling ,29-powered model, best recorded speed was 126.76 mph.
JANUARY 1989 39 or contact Robbe directly if you wish more info. Their address is: Robbe Model sport, 180 Township Line Road, Belle Mead, New jersey 08502, or call (201) 359-2115. Re member, you saw it in Model Builder. TOP FLIGHT MODELS By BILL FORREY Scott Christensen, head R&D wiz at Top Flite and world's leading authority on MonoKote application, has done it again! It • Big disappointment for purist sailplane is highly prefabricated, with factory- appears that modelers went a little nuts over modelers! This writer was able to search out trimmed wing panels that have the servo his little Astro Flight cobalt 035-powered and locate only one really new sailplane kit wells precut. Also included are machined Phasoar motorglider at the Toledo Show at this year’s RCHTA-sponsored Chicago ailerons, steel wing joiners, bell cranks, this spring. I know I did. Well, that little gem show. He saw quite a few motorgliders, horns, clevises, and towhook. Wingspan is is going to have an 05-size big brother however. 10.5 feet; weight, 59.5 ounces. sometime this coming spring. This year it seems that manufacturers The Vampire is big. Although the display Unveiled at the show was Scott's un have gone R&D happy in the electric power model wasn't finished yet (having no con named prototype two-meter electric, movement. Guillow's, Goldberg Models, trol surfaces), the Vampire design is sup which, for the time being, has been given Midwest Products, Great Planes Model posed to have elevons, landing flaps, and the code name "Fred." It looks right, just Manufacturing, Easy Built Models, EZ motor control (four channels). There are no like the Phasoar. It has a perfectly angled Sports Aviation, Top Flite Models, Parma In stabilizing vertical or horizontal surfaces, polyhedral wing, Eppler 214 airfoil (an ex ternational, World Engines, Kyosho, and and there is only a slight bulge where a cellent choice), and an all-moving stab. It Davey Systems all had new electrics in their fuselage would be. has a removable belly pod which houses booths. Some were scale models, some According to Robbe representatives at the the motor Ni-Cds. W ith this feature it is not were sport models, and a few were motor- booth, the electric power pod is an option. necessary to remove the model's wing to gliders. It's obvious that these companies The model can be flown as strictly sailplane get the battery pack out for charging or perceive electrics as a real and growing if desired. changing. One half turn on a special screw market. Perhaps this is partly due to the loss Stay tuned, see your local Robbe dealer, releases the pod/hatch and the whole thing of power flying fields to noise complaints, a problem not shared by the two silent flight cousins, sailplanes, and electric aircraft. Related to the subject of this column, "R/C Soaring," are the electric motorgliders. These are models which require the use of a motor and a propeller to provide thrust for launching the aircraft. (Propellers are things you use for epoxy sticks and letter openers, right?) Traditional gliders are towed into the air on the end of long tow lines either by hand, by winch, or by some kind of elastic cord. Purists, I suppose, always hand-tow, which is difficult to do alone. Small groups or lone eagles usually hi-start. In club fly ing, the electric winch is preferred. With the exception of slope gliders, motorgliders are the easiest of all sailplanes to launch. ROBBE MODEL SPORT Hanging high above the Robbe booth was the most unique-looking sport model of the whole show, the Vampire. This model Robbe's new Vampire, a highly prefabricated sport model. See text.
Inside the fuselage of the Project Fred. Lots of room for servos or speed controllers. As Scott Christensen of Top Flite Models with the Project Fred 2-meter electric motorglider due tro Challenger 05 direct drive motor and to become a kit this spring. Based on the Phasoar motorglider seen below in photo. Airtronics radio gear shown.
40 MODEL BUILDER slides back and out. The "Fred" project is currently undergo ing cost analysis, so prices aren't known at press time. Check back with me in the IMS show report in a few months for details. KYOSHO The Kyosho Express is a nifty little Japanese ARF motorglider. It's new. It's small. It's electric. It's scale-like. It resem bles the Kyosho Valencia except for its tricy cle landing gear. And because there was no literature available for it at the show, I know very little about it. Contact your local Kyosho dealer for details, or write the im porter, Great Planes Model Distributors, P.O. Box 4021, Champaign, Illinois 61820. EZ SPORTS AVIATION As detailed here a few months ago in the Toledo report, the EZ Elec. 1800 from Global Hobby Distributors was also shown in Chicago. Here is a large, powerful ARF motorglider that is different from your typi cal import. At altitude, the Elec. 1800's 530 Paul Carlson of O ff the Ground Models square inches of wing area over its 73-inch shows current AMA Nats winner Brian Noal Rossow, Composit Aircraft Engineering span is really easy to see. It has a powerful, Agnew the features of his high performance with the Sucker kit. a low-cost vacuum bag high current, seven-cell motor with an all- unlim ited ship, the Quasoar. system for composite wing building. metal gear box and a glass nylon folding prop with spinner. At 50 ounces, this com bination really climbs out in a hurry. In 45 seconds you are at 300 to 400 feet and ready to glide. Now available through dealers or mail or der companies, the Elec. 1800 runs about $179. It is 90 percent ready to fly right out of the box and comes with everything except battery, speed controller or micro switch, and a radio. COMPOSIT AIRCRAFT ENGINEERING & SUPPLY This company doesn't make model sail plane kits. It produces tool kits and materi als for making model sailplanes. If you ever scratchbuild, or are even thinking about it, give these products a close look. At three different times I took three photos in this booth. What Composit sells is a vacuum pump system for vacuum bag The new Kyosho Express electric motorglider from Japan. Looks similar to the Valencia but ging foam core wings. It is difficult to photo w ith trik e gear. graph. Everything is white. What you see is which is inexpensive, ingenious, and in "That depends." It is a manual system. If (I believe) the best photo of the three. dispensable for the scratchbuilder. They your bag leaks, you'll be squeezing the Noal Rossow and Dave Mroz are partners call it the "Sucker Kit" and believe it or not, hand pump all night to keep up the in this operation. They've found a tool that name is a trademark. vacuum. That's what you want to avoid. If The Sucker Kit includes a manual you use a thick poly bag, if the bag has no vacuum pump, lots of vacuum tubing, one holes, if you seal the edges of the bag with a free bag for your first few jobs, and an in good plastic caulk, then you should be able struction booklet on how to do it. It'll run to hold the vacuum overnight without fur you $49.95, but that's a whole lot cheaper ther attention. Even with a very slow leak and simpler than assembling or creating you could start out w ith one-half at your own system from surplus parts (like I mospheric pressure (about seven pounds did). per square inch), then lose five or six In case you are wondering how long the pounds per square inch of pressure and still system w ill hold a vacuum, let me answer. have one or two pounds per square inch left
Woody Blanchard and his well-known Volts- Terry Edmonds holds his lo 2-meter w ith his wagon motorglider. Keith Shaw's planes are Super Stars of R/C: Leon Kincaid, Brian Ag Unlimited Callisto and fellow LSF buddy in the background. new, and Terry Edmonds. Jack Hiner standing by.
JANUARY 1989 41 Hottest flier on the East Coast? Louis "Josh" Alex Vella and his new Ultima from Bob Don Goughnor and his Swag 134-inch Unlim Glabb is ESL's season champ in the expert Sealy Quality Fiberglass. Alex couldn't ited ship. Has 1120 sq. in., Eppler 214 wing, class. First in '86, second in '87, first again say enough good things about the model. NACA 0009 stab, weighs 70 oz. in '88. Plane is mini Windsong.
Stretched Gemini built by Bob Champine and flown by Fred Gregg. Beautiful 1/6-scale Krick kit of the German Reiher glider. Anthony Has Selig S4233 airfoil and 1140 sq. in. wing area. Quesada is the builder and flier. Has fun entering duration meets!
Tony Matyi was Saturday's winner at the CASA meet and 2-day overall high scorer at CASA's Unlimited contest. Ship looks like Tony Matyi was Saturday's winner and two-day overall high scorer a Larry Jolly Meteor. at the CASA Unlimited contest. Ship looks like a Meteor. to squeeze it all together. On a 600-square What is interesting about these rolls is that If you want a source for those clean, gap inch panel, that's still the equivalent of 1200 unlike some materials (obechi comes to less aluminum knuckle hinges you see on pounds of "stuff" pressing in on both sides mind), these have a fibrous, synthetic (?) the expensive German super ships, then of your foam cores! It w ill bond just fine. paper backing bonded to them which pre Composit is it. For the 60-inch kit you pay The other neat stuff these guys had were vents the thin grain from splitting. It works $12.95 and get enough hardware to do a some really thin (1/80 inch) wood veneers. very well. At $37.50 per 16 sq. ft. for the 120-inch hinge. For the 33-inch kit you pay They showed African mahogany and white birch, and $39.50 for the mahogany, the $7.95 and get enough hardware to do 66 birch in 4 x 4-foot rolls. Eight-foot lengths price is up there. Wing skins like these are inches of hinge. Kits include nylon bushing are also available, but were not shown. beautiful, but they cost. material, and two aluminum alloy arrow
42 MODEL BUILDER Walter Panknin and his unusual American Birdie. Has a toy baseball A little more serious Walter and his two-meter Alcedo original de bat for a fuselage, and toilet tank ball for a headl sign. V-tail has elevator only, wing has ailerons only. shafts with .343 OD and .317 ID. If you need 14-mil mylar for wet lay-up of fiberglass or other composite materials that come out mirror smooth, Composit has it. Reusable. Comes in 50-inch wide rolls, six bucks per running foot. Finally, if you want to see how foam core model wing building is done, Composil has a video tape coming up next April for $24.95, if you can wait that long. Composit gives you a 30-day, no risk, 100-percent money back guarantee on your order; P.O. Box 866, Lapeer, Michigan 48446. Shipping, add 10 percent ($2.50 min., $6.00 max.). CULPEPPER MODELS, INC. Although this company did not have a booth at Chicago, it was there represented by its head honcho, Mel Culpepper. Mel had with him one production run kit of the Chuperosa, a 1.5-meter glider for hand launch, slope, or hi start. I mentioned this model a couple of months ago. There are two things which make the Chuperosa design stand out from Terry Luckenback was Sunday's Expert Class the crowd right away. The first thing is its winner at the CASA meet for Unlimited Class Unidentifed winner of the Sportsman Class truss structure tail boom. I got a chance to Sailplanes. at the CASA meet for Unlimiteds. handle a partially framed up Chuperosa and LeRoy Satterlee's Chuperosa was just SUPER STARS OF SOARING fuselage at the show. The cross pieces were the start. No, this was not a commercial booth, it not yet glued in to hold the two sides to OFF THE GROUND MODELS was a double hallway of the best-known gether. Yet in spite of not being finished, it Paul Carlson and company had more R/C modelers and the models that made them had a very torsionally stiff tail boom. The gliders on display than any other exhibitor. famous. Sponsored by the AMA, this invita second thing you notice about it is its foam He had three: the well-known Prodigy, the tional event was to give everyone the oppor core wing and Eppler 214 airfoil. The beginner's Skyhawk, and the new Quasoar. tunity to speak with a panel of experts and modeler may select the Selig 4061 airfoil if Now in full production, the Quasoar is champions in specific fields within the desired as a no extra cost option. Hmmm, it available for immediate delivery. hobby. To quote Jeff Troy of AMA, "From pi all makes you start thinking about the The Quasoar can be built in two versions, oneers of radio control to the latest compe things you could do with one of these kits Standard Class (100-inch) or Unlimited tition winners, this will be a virtual 'Who's and a vacuum pump from Composit. Class (123-inch). The Quasoar's main claim Who' of radio control." From the field of The Chuperosa kit is pure quality. All the to fame design-wise is its high-performance soaring there were: the latest Nats winner, pieces you need to build the kit are there foam core wings with Selig S4061 airfoil. Brian Agnew, who recently won the Lee plus all the hardware. Covering material With this 9.6-percent thick, computer- Renaud Trophy for highest combined score and adhesives are all that you'll need to fin designed, wind tunnel tested section, the from three classes, the Hi Johnson Trophy ish the project. The Chuperosa comes in Quasoar can float with the best floaters yet for single highest score, and the Dan Pruss two versions, polyhedral wing or aileron make tracks with the best Unlimiteds. The Trophy for highest scoring Nats team; for wing. large flaps reflex upwards for speed and mer repeat world record holding cross Their pamphlet says, "Culpepper drop down for thermalling or landing. country pilot and LSF Level V pilot Jack Models' philosophy is to produce high The kit features a one-piece epoxy fiber Hiner; former Nats winner and noted quality kits of superior performance sail glass fuselage, clear canopy, foam core designer Leon Kincaid; and Terry Edmonds, planes by well-known designers in this wings, carbon fiber laminates, "accufit" noted designer and 1988 Nats second- field. Look for future developments." By that machine cut and sanded wood parts, and place finisher in Unlimited and Standard he means: be looking for Terry Edmonds's all the accessories needed to build the Classes. Nearby were two more sailplane Callisto, Unlimited Callisto, and lo compe model. The price is a pretty good deal at super stars, former Nats winner and LSF tition ships in the near future. Culpepper $149.95. Contact Paul at P.O. Box 518, Old Level V pilot Larry Jolly (helicopter booth) Models is teaming up with some excellent Highway 50 East, Lawrenceville, Illinois designers in the soaring field. Russell Shaw 62439. Continued on page 81
JANUARY 1989 43 following idea had merit for use in applica tions not requiring proportional control; i.e., electric-powered sailplanes. "I thought one could use an OPOT switch to control motor on-off as well as providing a means for propeller braking to stop a fold ing prop from windmilling after motor cutoff. To such an end, I designed the fol lowing (enclosed—em) circuit." Keeping the prop from windmilling is a definite re quirement, and on some designs, such as the electric-powered glider w ith a nose- mounted engine, the need to stop the pro peller horizontally for landing is also im portant. A lot of different methods have evolved, and Tim's w ill definitely work in both cases, though stopping the prop in a horizontal position is a matter of luck and w ill require several attempts. I have one suggestion and one "I'm not sure," but first, let's review the theory of this rather simple circuit. First off, braking in the electric-powered model, be it a car or as in this case, a prop- driven airplane, is not the more common automotive-type mechanical friction device that most of us are more familiar with. In this case, the stopping of the elec tric motor is done with a type of elec trodynamic brake, which is possible be cause when voltage is removed from the
• 1989! Can you believe it? Sure do wish they'd apply some of that "high-tech" stuff to slowing things down; maybe we'd all get more of that delayed building and flying done. Always around this time of the year I start totaling up scores, always a revealing thing to do. O f interest here, at least to me but maybe to some of you, is that my first MB article appeared sixteen years ago, in january 1973; all about a contest I attended down in Mexico. Electronics Corner started in December '81 and is now in its eighth year. Article number 300 appeared some time in '88. Wish I'd kept count of my mail, that would be an interesting figure also. Anyway, thanks to all of you who offered your support and your contributions through all these years; I couldn't have done it without you, and that's a fact. On the subject of articles, there was one in the November issue of RCM that is worth keeping in mind, as the subject is one that Electric-powered airplane motor brake system suggested by Tim Orr. See text for discussion and suggested modifications we all need sooner or later. It is entitled "Numbers and Letters for Model Markings" and is credited to the "RCM Staff." The arti cle shows you how to draw and apply those necessary trimmings and is definitely aimed at those of us who are not airbrush artists but do want custom markings. The examples show AMA markings: AMA 1995; and NMPRA numbers: 22B, among other interesting photos. Anyway, keep it in mind for the next time you have a need for such. THE Shuttle went off a few days ago, as this is being written. Wasn't it fantastic? And isn't it great to be back in the game again? O ur first EC blast-off for this month is Tim Orr, of West Hills, California, who writes: Ί read your column in the April issue of Model Builder. I was especially interested about speed controllers and the use of MOSFETs. Reading that speed controllers use variable resistors to give proportional Multi-channel decoder designed to upgrade the operation of two-channel receivers. Easily con braking, I was wondering if you thought the structed from Radio Shack parts.
44 MODEL BUILDER motor, and it is coasting freely, it is no longer a motor but has become an electri cal generator. Right—at that time, as no vol tage is applied to it, the magnetic processes have reversed in the motor and instead of consuming electricity, it is now producing it. The motor-turned-generator is not greatly efficient for this purpose, as different factors influence the design of a pure gener ator. But the motor is actually producing a small amount of pulsating DC power, and w ill continue to do so until its own internal resistance and inertia do their thing and cause the motor to coast to a slow stop. As Tim states, we can cause the motor to stop by connecting a resistor in series with it; an electrical load which w ill absorb and dissipate the small amount of power availa ble very fast or very slow, depending on our needs and the size of the resistor. Here is where the "I'm not sure" comes in! As those of you who have any experience at all with the resistor-type of speed con trols as used in cars know, braking action is obtained by switching a turn or two of the resistor across the motor. Its measured resis tance is in fractions of an ohm. Somewhat similarly, in the electronic speed control, one or two MOSFETs are switched across the motor in the brake mode. In practice they provide a smoother and more controll able braking action than the resistor, but do so in a manner similar to the resistor, allow ing current to flow through them and thus Commercially available sockets and plugs found or recommended for use in R/C equipment and models, shown as pairs w ith socket and mating plug. slowing down the motor. Here too, the in- circuit resistance is very small, lower in fact about half of a typical decoder. 3. Low cost, than that of the fixed resistor. about $3.50. 4. All parts are locally availa There is a difference, of course, in that the ble at Radio Shack. 5. Small, 1 x 1.25 inches R/C car requires faster braking action than (board—em) and can easily hold all parts. 6. what the airplane motor w ill, and, though I It works! have not actually tried it, I fear that the 10K "W hat can you do with it? resistor shown might not slow the motor "Upgrade your two-channel receiver to a down fast enough, especially when you are seven-channel. It is very easy on those re trying to "blip" it into a horizontal prop po ceivers using a 4013 decoder. Just pick up sition. In any event, the choice of a resistor the data signal from Pin 11, and battery value is going to be dependent on a lot of leads. You w ill find this decoder an easy things. The motor, the speed at which it is way to get that extra channel for motor con Socket above shows internal contacts often used to switch a circuit as plug is inserted. turning at the time the braking action is trol. Note: R1 and C2 are not required with called for, the size of the prop w ill make a all receivers." Now I have no idea how many One of the side effects of all this new nar difference as w ill just how fast you want it to receiver designs there are out in R/C-land row band frequency plan that we are in the stop. The bottom line is that for your partic using a 4013 IC as a decoder, though this midst of learning to live with is that it will ular set of conditions, you w ill have to play circuit should work with any other decoder kill a lot of this tinkering that some of us with the resistor values until you come up IC by just picking up the signal to it and have been enjoying for so long. No, I am not with what gets you the desired results. The bringing it instead to Dick's circuit. As for against progress, and w hile there is a lot of only guidance I can give you is that the R1, it is there to reduce the input signal from enjoyment to be obtained from seeing your lower the resistance, the greater the braking the previous stage if necessary. If possible, electronics working properly on the work action. measure the amplitude at the input of the bench, if it is R/C equipment, to me it is just Additionally, the circuit can be simplified original decoder IC and include or omit R1 a bunch of components and wires until I somewhat to use a Single Pole Double Pole to get the closest value to the original sig see it flying. Anyway though we w ill in most switch, as it is not absolutely necessary to nal. C2 is a filter across the positive supply cases have to stay away from anything that disconnect both ends of the circuit. To that voltage, and it is a good idea to include it in changes receiver and/or transmitter band- effect, everything on the left side of the all cases. widths or stability, there w ill be other areas resistor—the negative lead, wire from the It is probably worth mentioning that in all for the Dick Stones of R/C to enjoy. motor, and the resistor itself—can be con receivers the real design work and cost goes As for the decoder, the circuit values, in nected together. Switching just the motor toward getting that first channel. From then cluding Radio Shack part numbers, are as positive lead between the battery and the on, adding more channels is simple and in follows: resistor w ill give the required results. expensive, and often involves only the C-1 .1 uf 272-1053 ANOTHER READER CIRCUIT, an inter selection of the proper IC. In other words, C-2 22uf 272-1437 esting one comes from Dick Stone, who all of the RF, crystal oscillator, IF, and audio D-1 1N4148 276-1101 places himself in Talmo, Georgia, with a circuits are exactly the same in a two- IC-1 4001 276-2401 "(USA)" after. We sure don't want to confuse channel receiver as they are in the seven. I C-2 4017 276-2417 it the Talmoga anywhere else, do we? O f his Actually, a number of commercial receiver R-1 IK 271-1321 idea, Dick writes: designs differ only in the connectors with R-2 47K 271-1342 "What is it? A seven-channel decoder! which they are furnished, often being The .01 capacitor marked * from pin 7 to What's new about it (vs. a 74C04/74C164)? seven-channel units with less connectors "1. Far less complex. 2. Low parts count. installed. Continued on page 92
JANUARY 1989 45 By FERNANDO RAMOS
• Since 1979,1 have had the opportunity to Friday morning we all went into town to fly my Marquart Charger biplane or my '49 have breakfast and then back to the campus Bellanca Cruisair to Oshkosh. I have always to prepare our models for judging that even referred to these sojourns as "flying to ing, and to greet old friends as they arrived Mecca!" Since 1978, when the first Flying on the scene. Aces Nats was held at W illow Grove Naval A large banquet hall was utilized to dis Air Station in Pennsylvania, I haw alter play all the models, while another room Bob Wetherell with his twin C02-powered nated it with Oshkosh. It's hard to believe was used for the actual judging. No one was DH-84 Dragon. Winner of the Earl Stahl that 10 years have gone by since the very prepared for what was to occur this Friday trophy for the second straight year! first FAC Nats. This year was the end of the FAC Nats VI, held again in Geneseo, New York, and as far as I'm concerned, this is the absolute Mecca. Geneseo is a quaint little college town where S.U.N.Y. (State University of New York) is located, and about one-half mile from the college campus is the Geneseo air port. These two locations are the site of preference of all the FACers in attendance; therefore the last two FAC Nats have been held there. I'll give more specifics later. Bill Noonan and I have always traveled to gether for this contest, but Bill was unable to attend this year. Instead, Tom Arnold (editor of Scale Staffel newsletter) and the incomparable Walt Mooney and I traveled together. Fortunately, the flight to Rochester was uneventful. Tom got us a station wagon from Rent-a-Wreck. We really needed something larger, since both Tom and I had large modeling boxes and suitcases. Walt, on the other hand, had two peanut models in a briefcase and his week's worth of clothes in a bag not much larger than a Another look at Bob Wetherell's exquisite, clean and quiet C02-P°wered DeHavilland Dragon. camera bag. As it turned out, the wagon worked just fine. We actually arrived a day early, and I thought we would have to check into a motel for the night. Tom suggested that we try the dorms at S.U.N.Y. and see if they would let us in a day early. They did. This campus facility is one of the many positive aspects of the FAC Nats. They provided us rooms and two meals a day (with good food), and the college staff was very friendly and cooperative. After we checked in, we found that the Washington Maxecutters were already there. This most outstanding club took on the responsibility of hosting this year's Nats, which is a tremendous amount of work. Al lan Schanzel (editor of theirexcellent news letter) was C.D. Bill Caresa is president of the club, and one of the many things Bill did to make this contest a success was to hand- color every FAC badge given to each contes tant! Dan Srull, Tom Schmidt, Tom Arnold, Bill Caresa, and I talked into the wee hours of the morning. Shades of the Red Baron! The final round of the WWI Mass Launch event.
46 MODEL BUILDER Mike M idkiff's Nakajima C6M1. Don Srull and Dave Rees, tough as they come, judge the models.
Don Srull and Tom Schmitt with Don's 1911 Voisin hydroplane, Walt Eggert and his fine Cessna Airmaster. winner of the FAC Rubber Scale competition.
Mac McJunkin demonstrates his C02 "jet-"powered Bell X-1 as the Perfesser looks on at right. A jumbo Feisler Storch by Paul Gaertner. evening. There were about 300 F/F scale scrutinized as closely as the other events. kind of flight. In my couple of hours of try models on display, and everyone was in awe Saturday morning, everyone was up early ing in the middle a wheat field, I found out at the grandiose sight, especially the for breakfast so that the last final bit of what dehydration can be all about. And judges! The quality of the models was first- tweaking could be accomplished before great thanks to Pres Brunning and Jack rate, with many being exceptional. It was any official flights were taken. The Geneseo Moses for sharing their cold water. truly mind-boggling seeing the different airport is at least a square mile of grass sur That evening, everyone attended the ban kinds of models. No Lacys or Fikes here. rounded by wheat on two sides. Mecca? quet, and after a very good buffet dinner, Many multi-winged and multi-engined You bet! You'd be hard-pressed to find a door prizes were given out and awards for rubber-powered models were in the com comparable field. I remember the same the day's winner were also distributed. Earl petition. Don Srull blew the socks off of kind of weather two years ago. W ho cares? Stahl was given an opportunity to assess many by submitting an electric-powered It is still a great place to fly models. this year's Nats, and like the rest of us, he Dornier DOX using 6 motors and 12 props I won't bore you with my sad state of af couldn't believe the caliber of the models. for flying. The judging started at 7 p.m. and fairs, and that is that both the heat and hu Bob Weatherall of San Diego, California, didn't end until after midnight! Incidentally, midity proved too much for my diesel- won the Earl Stahl Perpetual Trophy for the there were close to 400 models because the powered Sopwith Triplane. I simply second time in a row. This trophy is given mass launch events did not have to be couldn't get enough power to sustain any for the model which most typifies the spirit
JANUARY 1989 47 of the FAC. Bob's model was a magnificent twin-powered C 02 DeHavilland Dragon. Hearing those two engines in sync was quite something else. Unfortunately, I didn't get to see it fly. Sunday brought another full day of flying with the mass launches taking most of the day. Don Srull had a w illing 12 year-old boy retrieving after each launch. After one long trudge, Don looked at the youngster and said, "I want you to have this model for helping me out." The boy was elated. Allan Schanzel said to Don, "What are you do ing? There's still one more heat!" Don had to explain to the boy his mistake and that the boy could have the model back after this last flight. Guess what? Yep, it flew out of sight! (Don gave the boy another model.) When all of the flying was officially over, Don Srull was the champion again. He had been Grand Champ four or five times out of six. He is one tough competitor. In addition to all of the flying, there was so much going on that it would be difficult to cover it all. There is so much fellowship, and above everything else, everyone is hav ing a grand time. Unlike too many Scale Pres Bruning and his Fiat biplane. Mark Fineman and his Savoia Marchetti 92. R/C contests that I have observed, the FACers are enjoying their sport with models costing a few dollars instead of hundreds plus! Monday morning brought sadness, as modelers exchanged farewells. It w ill be an other two years before we see each other again. This isn't the end of the story; I'll finish it next month. However, I do want to close by making a few comments. There were 122 official entries, the highest ever. California was fairly well represented. Bob Weather- all, Tom Arnold, Walt Mooney from San Diego, Mac Mcjunkin, Bill and Phyllis Warner (who didn't compete; they came as reporters), and myself. The FAC Nats is too big now for just Saturday and Sunday flying. Suggestions have been made to have those events that do not require judging to fly on Fridav while judging takes place during the
Don Srull's justly famous electric-powered DO-X.
Pres Bruning and the beautiful Albatross C-3. Author's underpowered!09 diesel) Sopwith Triplane.
48 MODEL BUILDER Mike M idkiff in foreground w ith his DH-5, ready for the mass launch. Mark launching his Marchetti.
Dave Smith's Fairchild 24 away on a good flight in the Golden Age Mass Launch.
Fineman's fabulous Savoia Marchetti jumbo rubber flying overhead.
Don Srull prepares to launch his Voisin Hydro plane. day. That would make the flying for Satur day and Sunday less hectic and even more enjoyable. Both the college and the Geneseo airport want us back in 1990. There is no guarantee on the weather, but the site makes it worth the gamble. I can't say enough about this event. The people and the models make the FAC Nats Mecca! · The author shows a bit of concern over his Sopwith's lack of ooomph!
JANUARY 1989 49 INDOOR FLYING REPORT By DAVE "VTO" LINSTRUM
• Last month we mentioned the excellent (courtesy of Aeromodeller, that fine British NFFS "Inside Story" article by five-time mag) and this snippet about the 1917 World Champion and AMA Hall of Fame Junkers D1 monoplane: member )im Richmond. This month we are "Professor Hugo Junkers of Aachen Uni happy to feature his "Insider's Workshop" versity, Germany, was one of aviation's out that produces those fabulous F1D microfilm standing pioneers. By 1910 he had devel models! See the photo and then read this oped a thick airfoil, making it possible to from the NFFS Sympo Report by Jim: design a cantilever structure, dispensing Dick Obarski, Sun City Center's resident ex 'My workshop is a spare bedroom where with external bracing used on all contem pert, with his canard Bostonian variant, the I have a desk, a table, and numerous storage porary airplanes. Owing to other pressures, Halcyon II. cabinets and shelves. This room also has a these ideas did not see realization in the tors. If you use liquid lube (rather than spray large closet for storing model boxes, sup form of a finished plane until the J1 of 1916. Armor-All), then put a few drops in a sand plies, and microfilm frames. My microfilm From this prototype, the Junkers Co. per wich bag, put your freshly tied motor in, is made every two years on the large 60- by sisted with all-metal monoplanes (except and rub the lube on between your palms. 40-inch table using rolled newspapers J4), a formula which was not adopted by the The lube will uniformly coat the motor, around the edge and an old shower curtain majority of the world's aircraft manufactur staying off your hands. Remove motor and to form the tank. Rodemsky microfilm solu ers until 20 years later. The production air install. Dispose of the "lube bag" at the end tion has been used ever since it became craft were given the designation J7." The of the flying season. This HOTM was by available; maybe 15 years. I store the Obscure Aircraft is one of the few that has C.A. Sotich. microfilm on frames in a 30-inch long not been modeled by Walt Mooney! We WHERE FUN TAKES OFF trunk. The frames are made to fit and are suggest you consider C 0 2 power, with a Joan Hannan, shopkeeper at Hannan's spaced apart by guide rails glued in the "quick change" pack for the engine and Runway, is right on the tarmac at Hannan's ends of the trunk. The desk is my 'work tank as shown in Walt's "Avro Spider" arti Hangar. Her latest catalog (send a buck to bench' and is painted a light color so wing cle, May 1988 MB. The new small electric Runway, Box A, Escondido, California and stab designs can be drawn on it. I use motors would also work fine, as would rub 92025) shows you where fun takes off! It the wall above the desk as a bulletin board ber power if you keep the tail very light. offers over 70 fine aviation publications, and have items of interest pinned up, like HINT OF TIHE MONTH rubber stamps, note cards, plans, rubber new design ideas, rules, photos, clippings, Way back in the very first "Insiders" col and small goodies. It is a veritable cornuco a thermometer, and a mirror arranged so I umn (July 1987) our HOTM was to bag your pia of fine quality material for the reader can see the TV without turning my head!" models for commercial airline travel—in a and builder. 'Insiders" will particularly en OBSCURE AIRCRAFT THREE-VIEW box and hanging bag. Now we repeat that joy the Zaic Yearbooks, Peanuts & We have a nice detailed drawing for you "bag it" advice for lubing your rubber mo- Pistachios books (Bill Hannan), and Dan Iordan Sky Soldier. A special issue of Air Wars 1919-1939, by A. C. Anson (No. 8), has great three-views. The seven Peanut plans by Ulysses Alvarez of Uruguay are of ob scure yet eminently flyable aircraft. Get your Hannan catalog today; tell Joan that "Insiders" sent you. Enjoy your fun! The following article appeared in a recent issue of Doc Martin's excellent and well worth subscribing to "Hangar Pilot." It's by Butch Hadland, a renowned British rubber scale flier, and it describes his approach to trimming various kinds of scale ships. I'm not equipped to argue the validity of his ap proach; however, I think it's very important to note that he has a system for making his aircraft fly. Most of us, I think (and I'm the worst of all!), tend to react to what our air craft do, rarely do we come to the flying site with an idea of what a given design is likely to do and how we will approach the prob lem of trimming it for flight. By the way, sub scribe to Doc's luminary, lucid, luscious compendium of carefully collated aeronau tical erudition by sending a ten-spot to: Dr. John Martin, Editor, "The Hangar Pilot," 2180 Tigertail Ave., Miami, Florida 33133. Champions made here! Insiders workshop used by Five-Time Indoor World Champion Jim INDOOR TRIM by Butch Hadland Richmond to create his F1D m icrofilm ships. Jim's headquarters are in Carmel, Indiana. My indoor flying models have always
50 MODEL BUILDER Insiders OBSCURE AIRCRAFT Reprints of this 1/72nd scale drawing and dye-line prints 1917 Junkers D1 of the 1/36th scale original are available as plan pack KJ2880 price 2/6d. plus 6d. post from Aeromodeller Plans Service.
A-A
F R O N T VIEW Span E A R L Y 19' 2LATER29' 6 WING SECTIONS
------5 11.12 r - — — r. 21/2' rj> p ___ ZJ
J J Cross LATER TYPE
UNDERSIDE OF FUSELAGE Corrugations omitted. t'a t/2\
/W\
c-c m 2* 5 “ D-D E-E F-'F
1 Λ i ν“ ·ί---- Ψ ί / ' · V ΠΊ
m > K-K . t ψ G‘G H- h SECTIONS
E F 6 H J 1 1 1 1 1
JUNKERS J.9 EARLY D.l. Length 22.0
COLOUR SCHEME FUSELAGE - CHOCOLATE BROWN WITH WHITE UNDERSURFACES. "JUNK 01“ IN BLACK WAS PAINTED ON 8EFORE THE BROWN, BUT SHOWED THROUGH . TAILPLANE- BROWN ABOVE, WHITE BELOW AT LEAST ONE JI HAD AN ALL WHITE TAILPLANE RUDDER-WHITE . WINGS - PALE GREEN WITH IRREGULAR PATCHES OF LIGHT MAUVE. WHITE UNDERSURFACES
NOTES > DIHEDRAL WAS ADJUSTABLE, CORRUGATIONS lln " PITCH Aero Modeller
JUNKERS D.l Drawn by IAN R STAIR. THANKS TO PETER L GRAY FOR INFORMATION ΡΤΓ777^1-|
JANUARY 1989 51 Walt Van Gorder admires Manhattan design "Pieces" built from plans by Plenny Bates. been very successful in the past, mainly due, I think, to my previous free flight dura tion experience. Other contributing factors are flying competitively in the United States, membership in the Flying Aces Club, and letters to and fro across the "pond" to my bosom pal Doc Martin, of the Miami Indoor Modelers Association. Of course, watching and listening to other scale modelers is also a superb pastime for furthering one's information and experi ence libraries. I should stress that the fol lowing is my way of trimming and flying. You may have other ideas, but I can guaran tee that my way w ill get your models flying satisfactorily, and that's what it's all about. The main difference between indoor and outdoor flying is that indoor we don't glide! The whole flight is "power on," although toward the end of the flight the propeller is pen outdoors with gust and general turbu have found it to be safe and pretty well in a "no man's land" condition; that is to say lence, so that generally a scale-sized stab foolproof. that thrust and drag just about cancel each w ill suffice. To overcome the small-stab syn My high-wing types (rubber) are flown other out, so a "powered glide" may be the drome, I usually locate my CGs much far either left or right, depending on the type of correct phraseology. Another factor to be ther forward than usual. This effectively competition entered! If the model is to be considered is that in calm indoor condi lengthens the tail moment and makes the judged for SMAE flight (the British AMA), tions the model does not become unstabi stab more effective. I use this technique on then I fly right. This involves a straight take lized by changes in air speed, as can hap all my models, both rubber and C 0 2 and off, and as the torque dies off, the model set tles into a right-hand cruise and eventual descent. The model's trim is as follows: 1. Slight wash-in (one degree), right-hand wingtip. 2. Two- to three-degree downthrust. 3. Two to three right rudder. 4. Slight up-elevator to counter item six. 5. Corresponding washout, left-hand wingtip. 6. CG position approximately 10 to 15 percent from L.E. Incidentally, most of my models are built with separate rudders and elevators. The weight penalty is negligible, but the control that can be effected on the model is im measurable. I don't like cellotape or mask ing tape trim-tabs. Flying high-wing models left is very exciting. Takeoff is usually fol lowed by a very tight left-hand turn, gradu ally widening out until the model assumes circles of wall-banging proportions; okay outdoors, but frowned upon indoors. Fly high-wing models to the right! Continued next month. ·
52 MODEL BUILDER
Napa, California, memories of the model are bound to vary, since there were two dif ferent versions. Apparently the earliest type had piano wire landing gear, while the later ones featured bamboo struts to reduce weight. This may account for the differ ences in building skills required as well as the variation in performance recalled by readers. SO NOW YOU KNOW According to San Diego Aerospace Museum Curator Ed Leiser, the French word "aileron," meaning "little wing," was coined by one of the Farman brothers. NFFS ANNOUNCEMENTS Tony Italiano has been busy this year! The National Free Flight Society has been more active than ever before managing contests, honoring modelers, and encouraging tech nical progress. SYMPO 88, recently published, docu ments many of these activities in fascinat ing fashion with articles, drawings, and photographs. Among the subjects are "Slot ted Wingtips on Soaring Birds and Models," Benno Sabei launches his unusual 1909 Windham tandem-winged Pistachio. Photo: AHerV' "Computation of Low-speed Airfoil Lift and Drag Characteristics," 'The Cylinder of the C 02 Motor," "A Reversible Helicopter," "Aluminum Wing Skins," "How to Find a Thermal by Using the Streamer," and much more. Also presented are the NFFS Hall of Fame Honoraries, the 10 top Models of the Year, and a sprinkling of cartoons. The 152-page SYMPO 88 is available for $15 plus $2 post age by surface mail to anywhere in the world. Order from NFFS Book Store, Fred Terzian, 4858 Moorpark Avenue, San Jose, California 95129. SYMPO 89 The NFFS crew is already hard at work rounding up material for the 1989 Sympo sium, and has issued a call for papers. Any one wishing to contribute articles should contact editor George Zenakis, 1288 Oak Knoll Dr., San Jose, California 95129, or managing editor John Oldenkamp, 3331 Adams Ave., San Diego, California 92116. Nominations are also being accepted for the 1989 Free Flight Hall of Fame awards, Three-year-old Naomi Sturman helps her father Nathan fly this fine Easy Built Monocoupe. which should be forwarded to Tony be described to Charles Dorsett, 2645 San Cheyenne, Wyoming, High Plains Drifters Italiano, 1655 Revere Drive, Brookfield, Benito Dr., Walnut Creek, California and the Denver, Colorado, Magnificent Wisconsin 53005. 94598. Mountain Men raised $240 for the Make A And finally, suggestions are solicited for CHARITY CONTEST the TO Models of the Yearf which should Larrie Schaeffer reports that the Continued on page 83
Dean McGinnes' tiny 1911 Caudron Pistachio rests atop Rod Spanier's Hamilton spans 30-3/4 inches. A long-term project reflecting every Travel Air 4000. hour invested. Photo: Alaback.
JANUARY 1989 57 By BOB STALICK
the first on your block! IANUARY DARNED GOOD AIRFOIL This was the airfoil to use back in the late 1960s and early 1970s if you were flying FAI Power (now called F1C). The section was named for the model design that was burn ing up the skies during the period: the Eros. For the more mature FAI flier who recalls this period, you should remember the changes that occurred with the scene, espe cially in California. First, George Albright's High Society, a derivation of the Spacer, dominated the winner's circle. Then the JAI • Holy Moly, Captain Marvel! Shazam! It's FAI, a derivation of the High Society, was Clarence Bull’s A.J. Walker Fireball done up as the January 1989 issue of Model Builder al followed by a series of designs that further a free flighter, powered by an O&R .23. Fire ready. What w ill the new year bring? What refined the basic concept. Then came the ball is a steady, fast flyer. can we look forward to this year in the rear fin phenomenon and elliptical swept- stab area is close to 25 percent. world of free flight? Might be quite a bit, as back surfaces. The best of the bunch, and The upraised and sharp nose entry (Phil I see it. How about these: certainly the most attractive, to these eyes, lips entry) adds to the speed of the section The AMA w ill decide that it w ill pick a was the Eros. at the sacrifice of some stability, but it is not Nats location based upon the adequacy of I am not sure who is credited with the so critical as to be a major problem from my the free flight site. Eros design. It has some of the touches that experience. The recently selected FAI F/F team w ill you expect from Craig Cusick, but I know I like this section and have used it on a have practiced together and w ill place first that the late Chuck Broadhurst as well as number of my powered free flight models, in all three events at the World Champs. Doug Galbreath flew the ship for a number including FAI Power. Try it yourself! The Pirelli people will discover that their of years. THREE-VIEW OF THE M O NTH— main market for rubber is the free flight This airfoil is a flat-bottomed fast section. THE ORIGINAL GOLLYWOCK modeler and come out with a product that If you are interested in getting high rapidly, I know, this three-view should be con outperforms any previous rubber ever regardless of the power event you are flying, tained in John Pond's column, but with all made. this is the one for you. A thin (six-percent or of the information that I have collected on New free flight sites w ill be proffered to so), flat-bottomed stab section w ill do the the Gollywock, it seemed worthwhile to in clubs around the USA due to a change in trick to balance the back end of the model clude it right here in the Free Flight column. federal law which allows landowners a tax for you. Balance point for the model should As I have found out, the Gollywock that you write off for such use. be in the neighborhood of 70 percent if the see here is the original design in the form Free flight newsletter editors w ill receive excellently written and copy ready materi als on time for publication. The Model Builder Free Flight column w ill be written so that it is always challeng ing, informative, readable, and en tertaining. I guess we can all dream this time of the year. I know I do, and I hope you do too. Maybe some of these thoughts w ill actually come true in 1989. Want to place some bets? JANUARY MYSTERY MODEL This month's Mystery Model takes us back in time to the 80-gram Wakefield mo tor to a time before carbon fiber and Hot Stuff and to a time when most ships, like this one, were built up from sticks and cov ered with tissue. So, from out of the past comes the Mystery Model for January, a ship that has a balsa landing skid that takes up the shock of landing by breaking off. A ship that features an earlier version of the Montreal prop stop. So, what is it, you ask? Well, that's for you to find out. If you think you know, drop a card or letter in the mail directly to Bill Northrop at Model Builder. Include your name and address. Winner receives a free, Greg Davis, Vancouver, won First Place in Nostalgia with this 8 Ball model. Ship is powered by one-year subscription to Model Builder. Be a Space Hopper.
58 MODEL BUILDER Bruce Augustus and his Thermic 72, with tiss ue on the wing and stab, silk on fuselage. that it was originally published in A ir Trails. This Collywock features bent bamboo tips on both the wing and stab tips and a sub rudder on the fuselage. Later versions of the Gollywock, includ ing the Midwest kits, had carved sheet balsa tips, and large tip plates on the rectangular stab. Some versions even had a sheeted leading edge for the wing airfoil. What makes this month's three-view the original version, as well, is the actual wing chord is 4-3/4 inches, and the actual stab chord is 3- 1/2 inches. The A ir Trails article, referred to earlier, incorrectly provided these dimensions. For the curious, the Midwest kits were produced for many years and were still on mize hangar rash and other dings and gravity is not specified. 70 percent is the the market in the early 1970s. This longevity dents, I would also outline the fin and sub most commonly accepted location for the is a tribute to the excellence of the Wally fin with a thin strip of basswood. CG. Simmers's design. In fact, I would suspect 4. Subfin location. The subfin is mounted 7. Incidence. The three-view does not that if you were to look into the crannies of directly under the stab on the bottom of the show any incidence for the model. The the older shops around the country, you fuselage. original, as well as later versions, has a 1/8- could still find a kit or two. However, these 5. Fuselage Sheeting. Although it doesn't inch square incidence block glued to the kits were not of the original model. indicate on the three-view, the fuselage wing spar bottom after covering. This is es Although the Gollywock is an unbelieva sheeting at the nose and rubber anchor po sentially a strip of 1/8-inch square balsa bly simple model, it is a fine performer even sitions is of 1/16-inch sheet. This sheeting is strip that is just over 1-3/4 inches long. This today. Some omissions from the three-view on both sides, as well as the top and bottom lifts the leading edge of the wing and pro w ill help you build this ship with even of the fuselage. vides the necessary incidence. fewer difficulties. Here are some tips: 6. Center of gravity. As is usually the case 8. Holding the wing in place. The wing 1. Dethermalizer. The model should be with most older designs, the center of on the original is held in place by long rub- built to accept a d.t. system. Since the space directly in front of the stab mount is left un covered, a pop-up stab d.t. can be fitted easily. 2. The top fin should be fitted between two stab ribs to make it more secure. To do so, cut an additional stab rib and glue it along with the designated center stab rib just on either side of the stab centerline. Leave a 3/32-inch space between these two ribs (see tip #3 below). 3. Fin and subfin. In my opinion, the top fin and the subfin should be made of 3/32- inch balsa to minimize warpage. To mini
DGA—Eros Section
Sta 0 .0125 .0250 .0500 .0750 .1000 .1500 .2000 .2500 .3000 .4000 .5000 .6000 .7000 .8000 .9000 1.000
U pr .0169 — .0303 .04 18 .0507 .0578 .0685 .0755 — .0800 .0790 .0720 .0620 .0498 .03 56 .0196 .0030
L w r .0169 — .0080 .0036 .0009 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000 .0000
JANUARY 1989 59 MODEL BUILDER ber bands which wrap around the fuselage. 9. Adjusting for flight. The adjustment for flight is quite simple. The wing is either slid forward or back to obtain the correct climb and glide. Once determined, a pen mark or other indicator should be drawn directly on the fuselage so that the location can be found on subsequent flights. Other adjust ments include the built-in downthrust indi cated on the plan. Since the model flies to the right under power, some right thrust may be necessary. Glide is either to the right or the left, and stab tilt can be used to accomplish this trim. 10. Power. The ship can be powered with varying amounts of rubber strip. Six strands of 3/16-inch w ill provide a docile flying model. Higher performance can be had by increasing the number of strands of rubber. Simmers suggests 16 strands of 3/16-inch rubber (this seems to be too much to me, but then the quality of the rubber in 1942 was not high). I believe that John Lender- man uses 12 strands of 3/16-inch FAI Rub ber, and his ship gets plenty high. I am sure that the Gollywock w ill be a model that you can build in a week and take out the following weekend to fly competi tively. It is simple to build and to fly. I recommend it as a good design for begin ners, regardless of how old you are. It has Marlin Mixon at the Silents Please meet in worked well for beginners and experts alike Oregon. Marlin's model is the Midwest kit since 1942. Forty-seven years is a long time Mark Sexton and his Teacher's Pet P-30 wait version of the Gollywock, a close cousin for a model to be popular, and the Golly for the next thermal. The P-30, an English to this month's three-view. Marlin took 1st with this model in the rubber combo event. wock is such a model. It is a tribute to Sim design, is a consistently good flyer. mers's designing skills. I wish to express my thanks to Phil Hainer Sr. for his assistance in the research for the Gollywock. 1989 NFFS SYMPOSIUM—CALL FOR PAPERS Anthony Italiano, President of the Na tional Free Flight Society, announces that the 1989 Symposium is now being planned. Any modeler who would like to contribute to the 1989 version should con tact either George Xenakis, Editor, at 1288 Oak Knoll Dr., San Jose, California 95129, or John Oldenkamp, Managing Editor, at 3331 Adams Ave., San Diego, California 92116. If you have a model design that you be lieve deserves commendation as one of the Ten Models of the Year, then direct your nominations to Charles Dorsett, 2645 San Benito Dr., Walnut Creek, California 94598. And finally, if you would like to nominate John Lenderman's original Gollywock in the winding stooge. Note the differences between this an outstanding free flighter to the NFFS ship and Marlin's, above. Elliptical stab tips and subfin are giveaways. Hall of Fame, contact Anthony Italiano, If you are not an N FFS member, add a dollar 1655 Revere Dr., Brookfield, Wisconsin to the price. If you are an overseas free 53005. flighter, then the postage goes up. Now, here's the kicker: nominations and A bibliography of all of the first 20 outlines of the papers for this 1989 Sympo volumes of the Symposium is also available sium are due no later than December 30, from Fred Terzian for $9 postage paid. This 1988. Time is already fleeting, so get to it. bibliography includes citations of: 1988 NFFS SYMPOSIUM-A FIRST-CLASS 1. All Sympo articles published in PUBLICATION Volumes 1 through 20. If you haven't picked up your copy of the 2. All Sympo Model of the Year 1988 NFFS Symposium, then you need to selections. do so. It is one of the finest of the Sympo 3. All references included in the above sium reports that has been produced in the two listings. over 20 years of effort. Sal Fruciano, editor, Now, if you don't want a paper copy, Jim should be very pleased. Now you can par Wilson has taken the time to produce the Lenderman's Gollywock has been flown for ticipate as well; $14 plus $2 postage w ill get complete bibliography on floppy disk. This many years, as the patched areas indicate. John you yours. Order from Fred Terzian, 4858 says that he built the model from scratch in Moorpark Ave., San Jose, California 95129. Continued on page 65 one day, took it to a contest and placed 1st!
JANUARY 1989 61 RAMBLIN’ AROUND AUSTRALIA
By STU RICHMOND. . .It looks like the ol' Rambler is going to hang around New Zealand for a while; this month he gets a ride in a real, full-scale DH 82A Tiger Moth for a look at the country from the air.
• A bunch of five-hour-sleep nights in Aus Tiger Moth registration ZKBRL with host was completing a large green/white scale tralia pretty well wiped me out. When I ar Bill Cooksey on the right telling me I ought Citabria that looked strangely familiar to rived in New Zealand my hosts. Bill Cook to take a flight. His son Billy finally con me. I'd sent to Bill Cooksey a color photo of sey and his charming wife Elizabeth, vinced me. a friend's full-size Citabria from Bob White allowed me to gradually come back up to Photo 2: I just loved having these two airport in Zellwood, Florida, and the photo full throttle before sightseeing and more lovely New Zealand ladies dress me in was being used by Dawson as simple fun- travel began. Their son Billy lives in Taupo flight gear. It wasn't expected and was much scale documentation; small world! Dawson in the middle of the thermal geyser area, enjoyed! flew Corsairs and Hurricanes in W W II. and Billy and the locals are very active Photo 3: Here's MB's combination of the Photo 8: Bruce Pike and his son Robert modelers with a nice infield of a horse train Great Waldo Pepper, Walter Mitty, and were at the infield flying this simple Cox ing race track from which they fly. Sheep Ramblin' Stu Richmond high over New Babe Bee .049-powered U-control trainer. It graze there too, so you really had to watch Zealand in a Tiger Moth. would sure be nice to see more U-control your step lest you slip 'n' slide in/on sheep- Photo 4: If it weren't for the head fins flying here in the USA with the youngsters dip, ya know; more sheep than people in showing you'd swear Guy Clapshaw's learning modeling skills. Maybe if cobalt New Zealand. model Spit was the real thing. Guy is a pilot 05 motors and insulated control lines with Getting to Taupo was an old-world-type with Air New Zealand airlines based in rechargeable belt-mounted battery packs experience. Five to six hours was the esti Auckland. were promoted we'd see a resurgence in the mated one-way travel time through rugged Photo 5: Billy Cooksey taxis for takeoff USA of this entry-level fun. scenic beauty similar to Maui, Hawaii. The from the infield of the local horse race track. After this visit with the Taupo Model Aero small bus stopped everywhere for every Billy's Zero A6 uses a Kraft system, Rhom Club in New Zealand it was time to start thing; we rode it from Gisborne only as far Airs, and an O.S. .61 two-cycle. moving on towards Melbourne, Australia, as Rotorua where son Billy met us. But at Photo 6: You have to watch where you and home. New Zealand is a tiny country of Rotorua, along the mirror lake, there were kneel to take model pictures in New 3 m illion people and 1100 modelers. There Tiger Moths at the airport. Tiger Moths are Zealand as you can bet the sheep were are few hobby shops and no national model to the rest of the free world what Piper Cubs there ahead of you! This is Dawson Harris's publication. But the model builders there are to Americans. But only about 125 of Fly Baby being fired up. He uses an O.S. .80 enjoy their activities with tremendous en these old biplanes exist, and they are con four-stroker. Model supplies are unbelieva thusiasm. Before I left, my host, Bill Cook sidered national archives by most coun bly expensive in this country. In one hobby sey, had painstakingly photocopied a 1946- tries. Sales are controlled and export is pro shop I saw small bottles of dope closed with 7 British book entitled Model Diesels and hibited. These two Tiger Moths were corks. Corks, like I remember from almost had it bound for me. It's the same book that available for sightseeing. Whatinell, it's 50 years ago! We sure are lucky in the USA. started Gordon Burford into model engine only model fund money. It was decided that New Zealand modelers did seem to pay building after W W II. It’s now a treasure in Stu was going aloft for one of life's great less for O.S. engines and many items from my library and a constant reminder of the thrills; an open cockpit ride in an antique the orient. friendships built in New Zealand through biplane! Photo 7: We were invited to visit Dawson model airplanes. Next month we ramble Photo 1: This is DeHaviland DH 82A Harris's workshop and accepted. Dawson through Melbourne a bit. ·
P hoto 1. P hoto 2.
62 MODEL BUILDER P hoto 4.
P hoto 3. P hoto 5. P hoto 6.
The extreme simplicity of the Dyno 1 is appar ent from this drawing. Careful inspection of the various points in the design afford a lesson in the elimination of nonessentials. In spite of its apparent lack of ornamentation the aes thetic whole is pleasing, while suck items as a drain plug-seldom seen on any of its imitators- are rightly retained. (From Model Diesels, on the Swiss Dyno, world's first production model P hoto 7. P hoto 8. diesel engine.)
JANUARY 1989 63 ϊ ϊ δ ϊ ΐ What YOU Really wanted! R/C MODELING ADVANCED GUIDE TO RADIO CONTROL SPORT FLYING BASICS OF R A0I0 CONTROL BOAT ZENITH Prjtt Scratch builders and >.t buideis, the book MODELING BOOKS a a fruit tor jour workbench! Compete state-of- F «eh T he editors of Rate Centre* Sort Mcdeter B the art techniques h r plannmg. budding and feacn you everything about getting started Cov flying jcur plane Superb bps and tricks lor con ers gas and etectr-c power, construct ion. πύο «ruction, >ιλ inlormatw on Amercan Mode gear, propehen. mcdihcahcns. setting up your AIRCRAFT ARCHIVES VBUILDINGS id FLYING len Assocatcn insufeoc·. chartering a out. art workshop, ·η « to do at the lake, and rac «g the A mud for mooeters and enthusiasts! Detailed m runs?* a contest 160 p c , 86 ill boat ixiudesOuts 71pp. 130·· formaten on each arc raft, plus cutaways, three 112988A ...... $9.95 113 1 4 8 B ...... $9.95 view drawings, cockpit digrams weapons, spec R/C BUYER'S GUI0E Iticabons, and pertotmax# data 96 pgs, 52 DESIGNING & BUILDING COMPOSITE Over 2 500 products m 30 efferent catemrtes BEGINNER'S GUIDE TO photos, 96 drawings R/C MODEL AIRCRAFT are Wed for every type ol R/C use Aftratt. en- RADIO CONTROL SPORT FLYING 113008AC Postwar Jets. VoL 2. ''-eludes A 7E ■met. hardware, parts, bwlding materuts. plans, Pratt A riart tor anyone ttMohingoltett.-e start Iambi# Complete guide shoeing ho* to build Crusader. F4 Phantom. *1 0 5 Thuodercfwf strong,strong ightwe-ghtightee-gh! 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Messerschmitt B1I09. planes, performance planes, gliders. scale R/C DUCTED FANS: How To Build & Fly Fochi-IM Fwiso. and 10 more1. . . . $16.95 RADIO CONTROL: models, pant state node*. ducted fares lets), Your Own Jet Successfully and heiecpfen 144 p p 804 A Handbook of Theocy & Practice Faneir An eipen shows you the secrets of build AERODYNAMICS OF 112989A ...... $9.95 Newell Background theory and basics cover •ng your cwn ducted tan Construction, fimsfvng MODEL AIRCRAFT FLIGHT SELECTING RfC SYSTEMS & 4 iry.ng without erasing. tng R/C theory together with precise consfruc Simons if wu're bu'tdmg or ttwiure of building tonbon details Ixiudes orcurt schematics 135 COMPONENTS FOR YOUR 1 1 2 3 & A P ...... $12.95 ν own M FLYING R/C MODELS JETS Leam ho· to sited a traoar, use 4 care of R/C A spectacular **< catencar featuring the n w a acton of our front-une fghters See SR· 71 equipment, take offs 4 ax-rgs. smooth fyu» Blackbird. F-15 Eagte B-l Bomber, and many more of our toughest combat aircraft Printed on 1rom difficult Situations & Itpquatty 171/Fi23 \/T paper CARS more 1 hour 1 I3 0 8 7 C ...... $17.95 VHS 109981E ...... 539.95 AIR POWER Beta 109982E ...... 539.95 2*iFurousfrominetir*powereceiorandmacton i r F-l4.F-15,F-16.S8-71.A6,«ndmor* 161/ 113107A ...... $9.95 R /C VIDEO MAGAZINE, VOLIO The latest a the dynamite senes toctodes dud THE CUTTING EDGE ed fans m acton, detamng by master Dave Platt, Fabulous M kolor photos stfw-tech hardware m acton Truly ejptowe shots fromCJ Heater" WINGS OF THUNDER g a it scale B-29 Superfortress, the American Mo- Amaoig footage and «credible starts from the «•alley's best seterg book Cuffing Edge capfunrg F,-A18. F 14. F 5. a j . A 7. and more Spec deters Assxiation. and 1987 Scale Masters tacuiar aerial actcn guaranteed to draw a crowd* I8 *i 14 1/2" Blue Angeft. Sxrwbeds. and the itahao. French, R/C CARS Cham^onsfvps 90 moutes. color and Braoiiafi jet teams Daredevi stunts at in- 113108A ...... $12.95 112996C VHS ...... 537.00 crwStte speeds' GHOSTS: A Time Remembered AOVANCED RADIO CONTROL CAR 8ASICS OF R/C CARS 112997C B e ta ...... $37.00 113000A VHS ...... $14.95 The annual tawjnte a back again with unbesevabte fufreoer {Aiotos ol perteetty restored warbrds MODELING E Z techniques 6 handy tps you need to get start rtciuOts important dates in tuafcn history Absototiiy the best warbod photos arewsd and truly Street Get the winning edge* Thsbaoy a packed ed Covers bukPnga car. suspensons. pamtrg. a spectacular addition to your den or office 20*> 14 with great bps and secrets for budding and rac*g moftfcations, batteries 4 chargers, radio gear, 113109A ...... $12.95 your cars hdudm modrtotoos. wemg. tires, dnvint competition, car care, mamtenaxe 4 CLASSICS: U.S. Aircraft of W.W.II handling, gears, electronics, racing strategy much more EKrtng. (I^color photos delner p in t wartxrd acton Alt your fnonte fghters can be seen ih dra paintyg. and much more Over 100 A lto s show 110992B...... 59.95 m ax. air-to-a* photos and close up 17 l/2 * i 23 \,T yt>j he»154 pgs 111 i»' 113088C ...... $17.95 1128898 ...... $9.99 LUCKY LADIES MANUAL OF ELECTRIC R/C CARS BUGGY RACING HAN 0800K (R /O The Gals Who Brought Us Home Vintage W in photos of the nose art pmntsd on a v **fy erf a* Bc/kmshaw Loaded wrth r.fo on choosmg a car Burtunsraw Covers cem pttter. tves. suspen craft Incudes important dates from WWII history 12*i9* 4 R/C equipment, painting, batteries. gtJnna sion. available bugpes. motors, speed control· 113164C ...... $9.95 suspension, sett/ig up for a race, tire prep 6 ten. rad» gear 4 rules Lists manufacturers 4 CONFEDERATE AIR FORCE detnbutoa An amaag ealteeboe of supeo aenaf photos from W Ctjitd. autner of the beautitw CAF bock 110681 AE ...... $14.95 110968AE...... 513.95 Evert r o w features an awesome, perteciiy restored warbru in acton Includes B -l7 F*ymg Fort. B-24 Liberator. P-40 WarhmA.P-5lMusUtig.F4U Corsair, and many others A must tor warbrd k>ve«s 19 l/2 *x 14’ MR 113090AE...... $12.95 GIANT SCALE INTRODUCTION TO ELECTRIC FLIGHT Peacock Leam tha ms and outs of dean, sient power Oetads a» aspects of ekttnc R/C fight 144 pgs. sftbd 112643AE...... $19.95 THE COMPUTE MANUAL OF FI FTTRIf PROPULSION SYSTEMS: NEW BOOKS The Quiel Revolution Boucher Packed with -nfo on Ncad batteries, SEAPOWER: Modern Naval Technology GHOST SQUA0R0N OF THE props, motor geanrg. f»« charges, motor speed of The USA and Europe CONFEDERATE AIR FORCE controls, boats planes, hebcopierj. etc 70 pgs. sftbd Owr ICO eoler photos brag you hard hating ac Wings of Freedom ton on the h«h seas See American nudear sub Crump Breath taking color phot» cajiire the 107638A ...... $12.95 112907C marines, subhunters, anti-ship cruise iwssries. «credible »ar*ty of perfectly restored wa/tards and mine hunters on patrol like never before •town by the CAP toctodes U S . Bnbsh. and Ger The a o n front-*/* arsenal on wafer complete man bombers, fghters. and trauvers flying hgh Order Toll-Free 24 Hrs ■ith specifications and lire power data ix b d ts AMERICAN WARBIRDS AIRPLANES over Tens LxJodes a bnef history of each plane a deserpton of eaet. but deadly submarine war SHOOTING STARS: Lockheed's a rt the CAF 61 pgs. 122 phrt». 90 m coto 1-800-826-6600 Peateg A superb collect on of new color photos tare and the Coast Guard's war oo dag smug 113195AE...... $11.95 ORDERS ONLY Wl. Canada 1 all inquiries use 171S294 3345. featunng U 5 fighter planes from WWM The Legendary T-Bird filers 96 p p . 125 color photos most stunme and mebcutous* restored planes O'Leary TheT-33of T Brd 'e the world's most 14 DAY MONEY BACK GUARANTEE LIBRARY ORDERS & DEALER INQUIRIES ΙΝΥΙΤΕ0 112771AP...... 519.95 BELL X I VARIANTS, DATAGRAPH NO. 3 ■nsde and esn and m rare aenal acton F4UCor- famous and most-used fghter-jet trainer The Mdter The first ever deta-ted took at the history Hems can be charged to Mastercard. Visa. American Eipress Optima saw. P-51 Mustang. T-6 Teun, P40 Wartiawk, plane debuted m 19*8 and estoibutft and used DOUGLAS DC-3 SURVIVORS. VOL 2 ax) hardware of Chxk Yeager's record breatore SHIPPING & HANDLING CHARGES ARE 53.95 Wtocat, He«cat. and more 1?8 pgs. 122 color tod»/ Buffs and modetenwil go crary over 122 Pearcy Skytrpn. Skytroope'. Dakota, and Goo supervxw: iese*'ch plane Packed with over 200 ney BmJ Sown the s the defntne cataog « Fee charged covers cost of shippmg 4th class bookposl o rm ll ship the best way photos thundering cctor photos showing the planes m NO CODs. Wl residents add 5 \ sales tax MN residents add 6% sales tax. 113014AE...... $14.95 fight art up JANUARY 1989 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 65 Terry Thorkildsen: INDOOR MODEL SUPPLY Tip #1: To get the most life out of your ENDURANCE RUBBER MODELS pacifier, blow it up first with no fuel in it. 2 COPTORS tTHE h e EASY B'B" 3IMS G,iders When it pouches to one side looking like a w 12" Span 18" Span hernia, squeeze it so that it stretches the The Glow Plug material out all around, and the hernia will 1 2 ' Span I $5.95 no longer be the weak point. T $6.50 THE SLOWPOKE 16" Span 2 Yard Birds Tip #2: To avoid a failure in your stab Analyzers! Plastic | mount, put a beveled piece of stringer ma terial at the joint to help beef it up. This is especially important if you just glue the The metered NI-STARTER® Weight 2? PenPennys S5.95 platform on top of the planking since it will from McDaniel R/C analyzes Plastic Prop 3 Parlor Planes The Novice Penny Plane invariably break there. See sketch else the condition of your glow plug where in this issue. each time you use it to start your Tip #3: This tip comes from Dan Keegan. engine. When attached, the dual To avoid excessive glue joints when gluing face ampmeter indicates a good, your ribs to the leading or trailing edges, m arginal o r failed plug. A n other $8.50 10” Span keep a cotton swab handy. Then when the innovation front McDaniel R/C. NEW TOP FLYING MODELS CA glue puddles on the waxed paper, you FOR CONTEST & SPORT IN AND OUTDOORS can wick it off into the cotton swab before • 1650 ma/hr recharge 20" DAPHNE EA. S8.50 the joint becomes solid. This is especially able battery provides Dolled Nose Bl helpful on smaller models where every bit 35% more starting Formed L. Gear AAA Light Sheet I of weight saving helps. Dan said he started power than regular AAA Strip Wood this when he built a peanut model as a Japanese Tissue nicads. Hardware & Prop break from his usual bigger gas models. • Dual-face ampmeter H-STARTER* Tip #4: Instead of guessing where your ■ indicates plug *.M D 20769 1301; I timer should be set at for the max engine condition when .7ΖΚΠ f t 4.406.890 f/» run, put a small black line at the appropri attached. ate mark using butyrate-type dope so it is permanent. A pencil mark w ill get you by in a pinch but w ill smear off with the slightest 13" SCALE AIRCRAFT KITS abuse. I set my timers beyond the mark and Model 205 shown, OUTSTANDING DETAILS. 3-VIEWS & HISTORY launch as it runs through the mark. This Model 201 w/charger AERONCA K 1937 gives you a pretty accurate time, and you ALCO SPORT 1929 WATERMAN RACER 1921 ZIPPY SPORT A.R.V. HEATH PARASOL 1928 get to make sure your timer is moving be NhSTARTER ea. $8.25 fore you launch. I also make marks for the rtl IVC Inc. 1220· Gw alii 272 pgs RON WILLIAMS BOOK ON appropriate flyoff flights with the reduced .·!·, MD 20769OC 300 illust. INDOOR MODEL AIRPLANES S15.95 .72901 £r 4.40&8K INDOOR BALSA PACK $8.25 P-NUT PACK $8.25 engine runs; then you are ready if you are JAPANESE TISSUE 10 Ige 5 col roll $6.95 CONDENSER PAPER 2/53.25 MICROLITE $3.25 running up a good string of maxes. RUBBER LUBE $1.95 BALSA CEMENT $1.95 Tip #5: If you are going to fly in the heat of THRUST BEARINGS, Mini Dual Or Dual $1.00 RUBBER 025 to 090. 005 inc + 1/8 8 3/16 $2.65 summer at Taft or any other hot spot, then 6:1 WINDER $5.95 16:1 MARK 1 $12.95 go prepared with ice water or Catorade that Model 218 shown. WE STOCK PECK. R/N, S BROWN A-23 CO2 you can take a shot of between flights to Model 217 w/charger \I-STARTER' • Wine. 12209 0 b , ADD 10% POSTAGE—MINIMUM POSTAGE $2.00 cool down. A good block-out to prevent Me, MD 20769 [30‘ < NEW 18-PAGE ILLUST. CATALOG $2.00 nasty sunburns is also advisable. The chair 3801 & M 0 6 » :· BOX 5311, SALEM, OR 97304 that my timer sits in also has an umbrella at tached to shade the timer while he helps time my model. Marion Keegan can attest to its effectiveness at the OrbiteeTs Annual. HI-PERFORMANCE If you feel you have just had too much sun, then cool down in the shade and take it FOLDING PROPS easy. * .020” wall stainless steel THE END AGAIN I Send SSAE lor catalog sheet on our complete line, | That's about it for this month. I hope you tube, stainless steel spring, K and W ENTERPRISES. INC. direct connecting high temp, have a happy holiday season and plan some 7824 Lexington Avt., Philadelphia, PA 19152 challenging winter projects. I'll share mine teflon wiring with beryllium with you during the upcoming months. In copper electrode. No sliding carefully, it appeared to me that Mark's was the meantime, catch a thermal for me. · co n ta cts to corrode. smaller. Indeed, Bruce and Mark agreed the ■ Positive 6-point P lu g L o c k " two models were of different size. Mark's Peanut...... Continued from page 53 will not strip or wear out. was constructed from the Berkeley/Sig kit • 110V and 220V AC chargers plans, and Bruce's was constructed from the The cowling for the engine of the Orlik available. plans in Model Airplane News by Ron St. has compound curves as shown on the top Ml jean. and side views, which are a little difficult to For these and other fine products from So, which one is the right one? Bruce says model with sheet balsa as is so often done McDaniel R/C, see your local hobby dealer his has a 250-square inch wing projected. with more commonly shaped cowls for or contact: Mark's is 250 square inches flat. Now, radial engines. Because it is commonplace there's a puzzler. Maybe someone out there to find it necessary to add nose ballast on a McDaniel R/C Inc. reading this can fill in the details about this Peanut (especially the way mine turn out; 12206 Guinevere Rd., Glenn Dale, MD 20769 minor difference. O r maybe it's time to call heavy), a hollowed block balsa cowl was (301)464-2260 FAX (301)262-4433 on the rules makers. I think we should just made for the model in the photos. Carve the Visa and MC accepted. forget it and consider that both of them are external shape on the block first, and then We take the hassle out of the hobby! eligible. hollow the inside before adding the front Nl STARTER· Patcol «DZ7290I & «.«6 . «90 PlugLock-(Patent Pmd ) MORE TIPS FROM TERRY end, which is laminated from three circles N1 STARTER· e a rt* trademarks McD*n*rl R/C. Inc. From the pages of the Satellite, once of 1/16 sheet and one ring of 3/32 sheet at ·>9ββ McOtn^-l R/C Inc more a listing of super free flight tips from the very front. Cement the layers of balsa to- 66 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER HOT STU FF" NON-FUMING NON-FOGGING WONT ATTACK FOAM Bonds Foam FAST with Hot Shot™ and KICK-IT™ ODORLESS Best Industrial Grade INSTANT GLUE Balsa - Spruce - Plywood - Rubber - Plastic - Hardwoods White - Blue - Green - Brown Foams NO PRIMER NECESSARY HOT SHOT or KICK-IT Accelerators SPEED CURE THIN' 'THICK' (Red Label) (Green Label) ODORLESS - Penetrating ODORLESS - Ultra Gap Filling CATALOG #MS CATALOG #"S UFO-7 - 20 Gr. UFO-4 - 50 Gr. UFO-7T - 20 Gr. UFO-4T - 50 Gr. "HOT STUFF"™· American Instant Glues AT FINER HOBBY SHOPS P.O. Box 836, Simi, CA 93062 S a te llite C ity (805) 522-0062 THE TEAM DOES IT IN THE DIRT. oil-filled racing shocks. These custom Associated shocks use machined alloy cylinders and Race the cor that beat the custom racing imports in the toughest kind of shocks drill blank shafts for silky smooth action. off-road competition d, yet light, the suspension gives The All-Americon Associated Competition e adjustability of full size, full race RC10 took home the gold in modular » buggies. The A-arm/Ball joint design allows both the ROAR and ORRCA precise camber, caster, ride height and National Championships. spring rate tuning. Even anti-roll bars Our RC10 turned back the and a VariLok dif ore included. foreign car invasion with the Exceptional ground clearance and some racecar technology that low center of gravity also contribute has kept Team Associated on to the superb balance and perfor top of the RC cor racing world mance of the RC 10 overall types for over 15 years of terrain. T6 aircraft A RACE CAR. NOT A TOY. aluminum GET THE JUMP ON THE COMPETITION. Sure, you've heard that before monocoque tub Go RC off-road racing with the But Team Associated designs leaders. The Notional Champion and engineers only model RACE cars Front RC10 is available now and legal for Fully c ROAR and ORRCA nationally sanc The new RC 10 features fully adjustable, four 4 whee l skid plate wheel independent suspension, an aluminum independent tioned competition. alloy monocoque tub and race-proven hardware suspension Complete RC10 kits, replacement throughout parts and spores are readily available through And the RC10 doesn't need expensive model cor racing's most extensive dealer accessories and modifications to handle the network. roughest tracks The strength and durability is Take the challenge ond build yourself a winner. standard equipment. Team Associated's RC10. Sealed gearbox VariLok RACE-WINNING ENGINEERING. differential For maximum traction ^ Smooth undercarriage the RC10 suspension maximum ground clearance is damped by long throw, ED Model cars for Real racers. Full race rear suspension Includes bulletproof half shott and u Joints with tapered and Associated Electrics keyed modular wheels Quick release knock 3585 Cadillac Ave., ott design tor last pit work and tuning. Costa Mesa, CA 92626 (714) 850-9342 C 1984 Associated Electrics BEGINNER TO EXPERT... KALT IS THE CHOICE KALT BARON 28 SUPER HELI COMBO The Baron 28 is a great economical choice for the novice. This is a very stable, precise flying machine which will give you hours of flying enjoyment. RETAIL CIRCUS ITEM» DESCRIPTION PRICE PRICE KBH28 Baron 28 Helicopter K it $199.99 $159.99 WE1029RHS Webra 1029RHS Shuttle Engine 129.99 94.99 CH0036A 1.5V Clow Plug 2.10 1.99 KOI000551 Hcloball Muffler 25.99 23.99 CH0001 Circus Super Starter 29.99 21.99 KALT CYCLONE SUPER CH0016 12V Wet Cell Battery (5.5 amp) 19.99 12.99 IM63003 Silicone Fuel Line (Large) 3.20 2.99 HELI COMBO MCDRC101 NI-HL-1 Ni-Starter (w/Chargcr) 26.99 23.99 The Cyclone is the ultimate beginner helicopter JS6H2 Circus 6 A M Heli Radio (CH12.38-56) 226.99 169.99 which is as easy to build as it is to fly. Its super strong JRS506 JR 506 Servo (Reverse Direction) 38.99 26.99 15.99 11.99 composite main frame, belt driven tail rotor, Bell- CH236 Circus Handcrank Fuel Pump K06030301 Circus Training Gear B-28 16.99 11.99 Hiller mixer, factory assembled collective pitch and HELITIPS Circus Heli-Tips Booklet — FREE rotor head can be built in 4 to 6 hours. This is a great SSUPER28 Baron 28 Super Heli Combo Price 737.20 563.88 choice for novice and expert alike. SUPER COMBO PRICE $534.91 RETAIL CIRCUS ITEM# DESCRIPTION PRICE PRICE KBHCYCLONE Cyclone Helicopter K it $299.99 $259.99 WE1025RCH Webra 50 Heli Engine 129.99 109.99 KOI000553 Heloball M uffler (for Webra 40/50) 28.99 24.99 CH0001 Circus Super Starter 29.99 21.99 MCDRC101 NI-HL-1 Ni-Starter (w/Charger) 26.99 23.99 CH0016 12V Wet Cell Battery (5.5 amp) 19.99 12.99 CH0036A 1.5V Glow Plug 2.10 1.99 CH236 Circus Handcrank Fuel Pump 15.99 11.99 IM63003 Silicone Fuel Line (Large) 3.20 2.99 K06030302 Circus Training Gear 16.99 13.99 JRS506 JR 506 Servo (Reverse Direction) 38.99 26.99 JS6H2 Circus 6 AM Heli Radio (CH12J8-56) 226.99 169.99 HELITIPS Circus Heli-Tips Booklet — FREE SSUPERCYC Cyclone Super Heli Combo Price 840.20 681.88 SUPER COMBO PRICE $600.98 JR GYRO (JRJ110BB) WHEN PURCHASED KALT HELICOPTERS WITH EITHER COMBO - $10.00 OFF CIRCUS HOBBIES DISCOUNT PRICE Manufacturersof the largest range of model helicopters in the world, with a choice of 10 models from the Baron 28 to RETAIL CIRCUS COMBO PRICE PRICE PRICE the scale Baron 60 Longranger. $148.99 $124.99 $114.99 3132 S. Highland Drive Call Now For Your Free Copy of Hie Las Vegas, Nevada 89109-1042 CIRCUS TODAY CATALOG ______1-800-782-0022______S U P TO: METHOD OF PAYMENT: YOUR TELEPHONE NUMBER: N a i m ______□ Chsdt or Morey Orta Endcesd □ C O D. H o w : ______Credt Cards □ Vtaa □ Masts Cad Aocont Nunb*______ C i r r _ E jj* a 9 o n D a W ______MFau mmaerwMmafiTommxjT A u d x rtz a d S g n a u * ______Stah_ ORDER INFORMATION ORDER BY MAIL Product Description Unit Pries Total Amount Item# Quantity Please complete (he order form, supplying all the requested information. Provide us with your name and address for shipping pur poses. Indicate the method of payment you want to use in the appropriate section. Fin in the Item number, the quantity you want, the Sw *m I Ha product description and the price. O rder »t Phone · Tou. F ree Sandad 8 00 ttwy rtMm mgAtr UPS or Pro* Pool Nendo fMadwia Add 9% SMae Tu When you are finished listing all of the nd hndrg ■nao ftoadoro Add 929% SMoo Tu items you need, add up the numbers shown in 1-800-782-0022 Spaa* rfipprg rfurgoo apply«»*■ Moairg lU to w Owt Pnorty HavMng Add t99 the total amount column to obtain your mer Phone Hours UWtMK UPS 2nd Cay V Add 1C% Sandart Bippng A Hantfng chandise total. If you wish to have your order Mon-Fri 7:00 am - 6:00 pm PST UPS Mad O^r Air Md 19% $5 00 Spaoa aippng Oargao processed with priority handling add $.50. Sat 8:00 AM - 4:00 PM PST Ptior%A«rUalAdd 19% COO Add BOO Add $5.00 for regular postage and handling. Customer Service (702) 732-0022 M o«vs art pnor^r Ad Mri Add tIO Rarfy Ad liB Add 20%______TiW tachment in terms of the front view. O f course, both frames lean in the side view; the front one leans forward and the aft one leans back. GNOME The center part of the canopy has a com The "Hi-Performance Compact" pound curve and needs to be formed over a RADIO CONTROL SAILPLANE pattern. It can either be stretched or vacuum-formed. W hich way it was done on 60"Wing Span the model is unknown because the Golden 375’ " Wing Area Age Reproductions kit for the P-51 has cano pies for both the "B" and the "D " model P- 1 2 to 15oz. / 2 ch R/C 51. Both canopies were left over because an Optomized Eppler 205 Airfoil "A" was put together. And the center portion of the "D " canopy fits the Peanut Orlik. S 34.95 Hand Launch» «Slope- ·· High Start/W inch Thin music wire and balsa details were used to construct the landing gear details, At your Dealer or and they were made to plug into mounting add $2.00 per order b e m s ? m m m , «© araftira; for UPS. Ca. Resi blocks so that the model could be flown P.O. Box «9 MIDW AY CITY, CA 92655 (714) 695-6569 add 6% for Tax. A with the gear "retracted." The doors were stuck on w ith rubber cement for easy removal. This model did not fly right off the draw ing board, but required quite a few trim Hobbyhobby specialties Horn ming flights. It tended to spiral dive to the 'tw o ! t k e right in the glide. As more and more left Kits from turn was adjusted into the glide trim, more P & W and more right thrust was required for the Model Service d m φ τ 1935 Miss America 84* $71.96 1936 Buccaneer 84* $59 96 powered portion of the flight. Luckily, the 1937 Danaire 108·' $75 16 1938 Cbpper Mk I 72" $4156 Polish designers saw fit to have external tabs 1938 Kloud King 63* $42 36 1938 Powerhouse 84* $53 56 1938 Record Breaker 96* $69 56 1938 Trenton Terror 72* $40.76 on all the control surfaces, so flight trim 1939 Korda Wake 44‘ $19 16 1939 Mercury 72* $58.36 1939 Zipper 54- $53.56 1940 Ranger 46* $3196 ming is simplified. · 1940 Sailplane 78* $84 76 1940 So Long 50’ $30 36 1941 Bngidier 56’ $40 76 1941 Super Quaker 78* $72.76 1941 Playboy Jr 54* $3116 1941 Playboy Sr 80* $51 16 Plug Sparks. . . Continued from page 34 1941 Brooklyn Dodger 56* S42 36 Midway Model Co.: Full Kits Wakefield and Jack Phelps posing with an 1936 Flying Quaker 84* $64 76 1938 Powerhouse 50' $ 2 9 9 6 1937 Long Cabin 78* $47 16 1939 A T Sportser 50* $29.96 Ed Lidgard "Hi-Ho," a stick-cabin combo. 1937Quaker Flasher $45 56 1940 Buzzard Bombshell 1937 Air Chief 61* $35 96 7 2 " span kz $ 5 6 9 6 Incidentally, Jack won the stick event at the 1940 New Ruler 74* $7116 5 0 * span k< $ 3 5 9 6 Seguin AFB SAM Champs last year. The above kits qualify for Sam events (FF & R/C), and feature Dan Smith, seen in Photo No. 7, is a pro the highest quality machine cut & sanded parts, all sheet & strip wood. wire. & window material. Most plans arc the original lific builder and flier as can be seen by his I F hut the models anr easily convertible to 3ch R/C stable of fliers; TD 020 powered Stratos- Sailplanes, Electric Power or Gas Kits ■■MiBVY&LMQDELCO, ELECTRIC MQPEL DESIGN A-J "CLASSIC" 3-PAK... treak, 1/2A Texaco R/C Peerless Panther, a Gnome HLG60" $24.00 Sky Knight 44* (05 Dl) $24 00 Telco CO..-powered Rambler, and an elec Gnome 2M Glider 78" $37 96 ElecJraGWe II 73* (05 D) $31 00 o A-J HORNET Fast Eddie (05 D) $24 00 Lightning 36* (05 D) $24 00 o "404" INTERCEPTOR tric powered MK II Comet Clipper. Dan UlraMkIV (05G) $37 96 Thermic Traveller (05DorG)$3l 00 }$19.95 comes to have fun! Electric Playboy (05 G) $26 00 o "74" GLIDER Hobby Horn Sensoar Glider 78" (or 05 electric) $ 18 00 (Each is ready lo lly) EASTERN ECHOES Astro Challenger (05 Geared) $32 50 Astro Viking (05 Geared) $32 50 Just received a series of photos from Mort Astro Porterfield (15 or 25 Geared) $59 96 Note Please add $3 00 for postage and handling on first 3 Ross of Morristown, New Jersey. Most, un Astro Sport 3Γ (05 Direct) $29.96 packaged models Add 10% ol price tor each additional Davey’s Robin (05 Geared) $33.71 fortunately, did not have the "dropped” Davey's Le Crate (05 Geared)______$ 3 5 9 6 oooooooooooooooooooooooo camera properly repaired, as the shutter FULL LINE OF ELECTRIC SYSTEMS & PARTS AVAIL. was partially frozen giving a light leak that S H IP P IN G & H A N D LIN G 76 Page CATALOGUE Up lo $8 00 add $2.00 $2.00 pp/1 st Class, or free fogged the film. $8 01 lo $20.00 add $2 50 when requested with order. $20 01 to $45.00 add $3 25 However, we had picked up a few of the $ 4 5 01 10 $70 00 add $3 75 HOBBY HORN ^AIRCRAFT COMPANY better ones, one of these being Photo No. 8 Over $70 00 add $450 CA Addressees add 6% lax Send 15173 Moran St. [B] P. O.Box 68132 showing a reduced version of Dick Schu MO. VISA / MC (# S Exp) or Chock P.O Box 2212 macher's "Candid" to be used in the 1/2A (allow up lo 30 days lor check Westminster. Ca 92684 PORTLAND, OR 9 7 2 6 8 clearance.) (714) 893-8311 Texaco Event. Mort also reports the SAM 15 COD - Exact charges plus $1 50 Hrs: Mon-Fri 9AM - 5PM handling (Cash Only)______SPOT contest was a great success with a strips cut from a piece of 1/64-thick three- lovely 80-degree day and sunny skies. ply with grain of the outer plys going across Following this September 11 contest at gether with the grain aligned in different the width of the strips. Make the strips Bridgewater, Mort also attended the SAM directions for maximum stiffness. A small longer than necessary and cut one end to 6 6 contest at Delaware City. Another great Williams Bros, plastic thrust bearing is the proper angle for attachment to the up day and great bunch of fellows. Photo No. 9 used. per longeron as shown in the side view. shows one of the great guys, Walt Eggert The canopy can be formed as a single Now cement it to the longeron, flush with with his original 1936 gas design, the piece if desired, but the Polish engineer the outer side. When this is completely set, "Eaglet" powered by a Brown Jr. Also seen is who designed them was very clever and did bend it around to the other longeron until it one of Walt's kitted designs, the Soaring Ea it in such a way that the fixed front and the has the correct curve and height in the gle A (produced by Megow Models). This most aft part of the canopy are flat wrapped center of the airplane and is properly lo model has turned out to be a beautiful 1/2A and so can be simply wrapped around. This cated in the fore and aft direction on the Texaco design. also allows the canopy frames to be made second longeron, then mark the cutoff an Ross also sent results as follows: out of straight, parallel-sided pieces before gle. Cut the strip as marked and cement it to V2A Texaco: 1. Jack Van Dusen, Foo-2-U- they are bent to the canopy contour. As a the second longeron. Make sure that the at 2; 2. Art Peterse, Swoose; and 3. Walt Eg consequence, we can make them out of a tachment of the canopy frame is flush with gert, Soaring Eagle. straight, parallel-sided piece also. The ones the outer side of the fuselage and vertical Fuel Allotment: 1. Dan Schneider, on the model in the photos were made from with respect to the airplane at its point of at Bomber; 2. George Murphy, Dallaire; and 70 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER ELECTRIC POWERED AIRPLANE KITS THE ASTRO SPORT Our popular PARTEN AVIA P-68 kit has been comnplete- The Astro Sport is a cute little high wing sport trainer that ly redesigned for the Astro Cobalt 05 M otor. The airfoil sec is specially designed for schoolyard fun. Install the Astro tion has been changed to the Eppler-195 for improved Cobalt 020 M otor and you have a gentle and forgiving trainer aerobatic performance. The P-68 has always been a popular that is very easy to fly. Install the more powerful Astro Cobalt model at our electric contests, and in fact an Astro Cobalt 05 035 and it becomes a real schoolyard show-off doing snappy powered P-68 won first place in aerobatics at the 87 EAA rolls, loops, and other schoolyard maneuvers. The kit contains Electric Championships. The deluxe kit features all machine all machine cut and sanded parts and is super easy to build. cut and sanded balsa parts. Wing Span 50 inches, Wing Area Wing Span 37 inches; Wing Area 292 sq. in.; Eppler-195, 400 Sq.In., Flying weight 4.5 lbs. Flying Weight 22 to 28 ounces. Kit # 1019...... $ 39.95 Kit # 1013...... $89.95 THE ASTRO CHALLENGER NATS WINNER THE PORTERFIELD COLLEGIATE Bob Boucher’s Astro Challenger won the 84 Reno Nats its The Porterfield Collegiate makes a great sport scale electric first time out and has been winning electric sailplane contests model. It’s gentle and forgiving nature make it perfect for all over the country ever since. Powered by an Astro Cobalt beginners, but at the same time it can be quite responsive in 05 Geared Motor turning a 12 inch folding propeller, the skilled hands. The large wing and light wing loading lets the Challenger climbs almost out of sight in 45 seconds, and can Porterfield climb steeply to and land short. Just what you need repeat this climb three or four times on a single battery for flying in your neighborhood park or schoolyard. Beginners charge. The distinctive wing planform with elliptical tips max to R/C should install the Astro Cobalt 15 Geared Motor. imizes aerodynamic efficiency and minimizes tip stalls. It’s More experienced flyers can install the Astro Cobalt 25 gentle and forgiving nature make it perfect for beginners too. geared motor for very realistic scale like maneuvers. Wing Kit features all machine cut and sanded balsa parts. Wing Span 69.5 inches, Wing Area 690 sq inches, Airfoil Eppler Span 72 inches, Wing Area 612 sq.inches, Airfoil Eppler 193 193, Flying Weight 4 to 5 lbs. Flying w eight 39 o u n ces. Kit#1020...______$ 49.95 Kit # 1018______.$ 79.95 ASTRO FLIGHT ΙΠΟ 13311 BEACH AVE. · MARINA DEL REY, CA 90292 · PHONE (213) 821-6242 COLLEGE OF GLUE KNOWLEDGE Zap Lock Blue Formula is medium strength. Green Formula is high strength. Developed for locking metal fas teners or nuts and bolts. Parts treated will not loosen due to vibration. Blue Formula great on all sizes of threads. Green Formula is too strong for anything 6/32 or smaller! Blue Formula can be loosened w ith hand tools. Green Formula is his tory! Only high heat application can loosen bond Prof. Sticky VonShtuck Pacer Tech, Campbell CA 3. Walt Geary, Zipper. Ross puts in a plug for Walt Geary as the best all-around guy; a fine model builder and flier and always helpful and cheerful. In Needle Files short, a real pleasure to associate for flying meets. USFF OLD TIMERS A complete set of 10, Bruce Augustus sent in several interesting jeweler-fine files for every pictures taken at the U.S. Free Flight hobby and craft use. This Champs featuring C liff Silva. The most needle file set features remarkable thing of the large models Cliff round-handled files of flies is that all starting and flying is done in tough, tempered steel in a wheel chair. a handy plastic pouch. Spade, flat, square, round Photo No. 10 shows C liff with his 13-foot and taper files are in Mike Roll Berryloid Winner of 1937. Cliff cluded in the assortment. has to rely on a helper to launch the model Send 25 cents for a and in this case good friend Jimmy does the complete catalog of hobby honors. and craft tools and ma C liff has moved from his ranch in Liver NEEDLE FILES terials. K&S Engineering, more Valley to Fallon, Nevada. Lots of free I * 1 — r+OUNli MAMDtE 6917 W. 59th St.,Chicago, flight space out there! IL, 60638. Telephone: 312/ 586-8503. SAM AUSTRALIA Bruce Abell, 17 Ferguson St., Cessnock, N.S.W. 2325, Australia, writes to announce the first Aeromodeling Veterans Gathering to be held on May 20 and 21, 1989, in the Hunter Valley, 100 miles north of Sydney (still in New South Wales). The purpose of this "gathering" is to in vite many of those modelers involved in the early halcyon days of aeromodeling. Over seas visitors will be billeted at the Hunter Valley Club where informality and enjoy ment are the only guidelines. For the Gemini M.T.S. benefit of those not competing and (A SUPERIOR MULTIPLE TASK SAILPLANE) spouses, conducted tours of the vineyards and wineries are offered. Standard Class R/C sailplane for The schedule will consist of free flight, sport, F3B, and AM A contests control line, and radio control models, all Specifications: on the same field at the same time. The "pot Wingspan 100 in. COMPLETE K IT W ITH hunters" can have their fill that day! Wing area 930 sq in. PRECISION CUT PARTS, An awards dinner w ill be held on Satur Flying weigh t 44 oz. ALL HARDWARE. AND day evening with the weekend concluding Wing loading 6.8 oz. /sq ft FULL-SIZE PLANS Wing section MB-253515 with a Sunday evening barbecue. For fur IIS% semi-symmetrical) ther information, write to Bruce Abell at the $ 9 9 1 5 Max. ballast 4 lbs. above address. Bruce, who is tremendously active in the Pierce Aero Co. Old Timer activity, sends in a few photos 9626 Jellico Avenue, Northridge, CA 91325 Phone (818) 349-4758 showing the local action. Photo No. 11 was taken atGoulbourn, N.S.W. Lionel Joines is 72 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUIDLER RELAX. WE CAN FIX ΓΓ! ITSASIARH^WK. The first “rookie-to-ace in eight flying days” that is ALSO repairable. RC is suppose to be fun — not terror filled anxious moments. Introducing the first ARF that is truly repair able—yet meticulously handcrafted, one by one, using easily repaired balsa and foam construction. Easy to fly the first time.. .easy to move into aerobatics.. .easy to repair. NOTICE: Because STARHAWKS are meticulously handcrafted they remain in limited sup- ply. See your hobby dealer soon for delivery details. Thorpe Engineering Corporation 1715 East Fairfield Mesa, Arizona 85203 (602)9644398 c I 9 M 8 T E C H M odel: Am y Lynn («ru n o * alii M a fc c -L p & Hair Vince Fancy JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL 'EM m o del builder sent youi 73 tled down with Borthwick. Photo No. 15 should be captioned “MIL- SPEC” HAYES WHIP ANTENNA "Smile, it only hurts for a while," as Des Slattery had just received a nasty crack from SPEED the Cox 049 on a cold day. That one smarted! The model being used for 1/2A CONTROLS Texaco is the Leon Shulman-designed Ban SURFACE MOUNT shee. This design became very popular in TECHNOLOGY, CERAMIC England right after the war. Most all "origi BOARD, SERMOS Vertical whip nal" designs at this time reflect the Shulman CONNECTORS STANDARD! influence. antenna replaces any c AA Λ 6 TO 28 Cells at 40A SCALING REVISITED OIV 1 *··T continuous. 18 or 36-inch receiver Received a most interesting letter from Avalanche Current 200A. 1.5 x 1.625 antenna for R/C cars and Ross Thompson, 21201 NE 58th St., Space X .375 Weight 27 CRAMS with leads boats. Connec tors, vertical 47, Vancouver, Washington 98662, who S85 writes to say it is easier when scaling to re C A Λ 1 to 7 cells at 30A and horizontal mounts and member if you divide the area you want by OIV continuous. safety ball all included. the area you have, then take square root of Avalanche Current 100A. 1.1 x 1.85 X .375 weight 21 CRAMS $70 Stainless spring steel the answer. For example: 400/800 = .5 and whip only 1/32 diameter for the square root of .5 = .707. This requires only two entries and is eas DC/DC BOOST minimum wind resistance. ier to remember. Ross also says to watch CHARGER Available at your your rounding off figures. A good example For 7 to 28 cell packs up to 4 local dealer. of that is .707 x .707 x 800 « 400, but .7 x .7 Amps. “Core” charger includes 15 x 800 - 382. This could be important in an minute timer. Add your own event such as the Ohlsson 23 Event, which meters and packaging, up to 90% requires a minim um of 450 square inches. efficient!! 3 X 3 x 4.5 Weight 1 lb. In addition, Ross says beware of scaling S 1 2 0 up small three-views, as the distortion can Swllc/jes. W ire. Sennas & More Too! IS and — accep ted ! be fierce at times. Ross says he had 37-inch JOMAR, 2028 Knightsbridge Dr. w/s plans enlarged and found one side Cinti.. OH 45244 / 513-474 0985 panel 3/8 inch less than the other. Check your originals carefully. Models don't fly too good this way! READERS WRITE HAYES PRODUCTS Received several photos from Lin McKay, 14325 Commerce Wy. 523 E. Leake St., Clinton, Mississippi 39056, who sent in one really good-looking Garden Grove, CA 92643 shot of his Moyer Cloud Cruiser dolled out in National Guard Air Force colors, blue fuselage with yellow wings and tails. This can be seen in Photo No. 16 on the E le c t r ic local R/C runway. The other photo, which we were unable to use, showed the model A Nationals Winner coming in fora nice landing. Unfortunately, The “Heinkel” He 100-d the photo was taken too far away and would 24“ Wingspan — Rubber Powered Flying Scale not show in a reduced photo. $ 1 5 .9 5 K it «110 Your old buiiomg skills w ill enjoy me experience Time too SAM ITALIA to get your son learning how A beautiful kit m the Flylmo tradition, contest winning (light ability Decals. Canopy and Simply can't resist using photos sent in by Spinner are included. Ouality balsa, a kit we are proud ol Has Brake ^ x 2 month Cesare de Robertes of Rome, Italy. Photo We've got a whole line o( old lavuntes. Lightweight 12 ox. money back Please send 60s tor our Ftylme Catalog Adjustable switching point guarantee No. 17 shows two models by the old master Soldcrle&s terminal for easy hookup _ Phone: (703| 273 9593 Dealers and Distributors are invited Arve Mozzarini. At the left is seen the 1949 FLYLINE M ODELS, INC. ON/OFF Controller φ24.95 design called "Dindi" (note wing in dether- ______P.O. Box 2134, Folffox, Vlrglnlo 22031______M ore Power, save weight Very high efficiency only 0.06V loss malizer position) and on the right, Arve's at 20 A. Size 2 JxI Jiu63 Add J 1.00 fo r shipping fabulous "Moar," a design of 8 -foot wing f / California residents add 6 3 % S 1.63 Tax responsible for the beautifully finished / Send Check or money order to span and Brown Jr. power. Both models dis Shereshaw Champion, a design that ap / l t j High Sky play that meticulous Italian craftsmanship. Fnuba connector 3929 Kansas St. #9 peared in the April 1937 issue of Flying San Diego,CA 92104 THE WRAP-UP Aces. Back to obituaries this month, as SAM has To show the intense interest in old timers. lost several good supporters of the Photo No. 12 shows only a portion of the MORE SAM AUSTRALIA movement. entries at Coulbourn. Seen in the pic are a Colin Borthwick, who will probably be First off, the latest SAM 35 publication in Lanzo R/C Stick, Lanzo RC-1, Dallaire, Buc this writer's host when he visits Queens their lead article announce the passing of caneer, Champion, Cadet, and a few others land in January 1989 for the MAAA Nats, Vic Dubery. As an early member of SAM 35, unidentified. Note most of the models are sends a few interesting photos of the he was the SAM 35 Chairman during 1982 "biggies." Besides all his model building Queensland State Champs. to 1984 during which time Vic was instru and flying, Bruce has found tim e to Photo No. 14 shows Borthwick receiving mental in creating many of the procedures machine up an "Atom M inor" MK III (as the Texaco Trophy from M ajor Farris of the now taken for granted. seen in Photo No. 13). This Edgar Westbury USAF; this meet being held at Amberly Vic is well remembered by this columnist design was made from a set of castings AFB, the venue for the 1989 Nationals. for his stories of model building aboard the Abell was lucky to obtain. The completed Looking on are Les Parker and Des Slat British Naval ships. The story was written engine tested out at 5,000 rpm using a 14 tery. Colin, for those uninformed readers, about ten years back but did show an inven dia. x 5 in. pitch propeller. writes a column for the Australian model tive genius for modeling with practically all The engine is scheduled for installation magazine, A ir Borne. The column, "For model materials nonexistent. in a Rockateer. Should be an interesting Old Timers Sakes" has had two or three Dubery was extremely active in most all combination. columnists, but seems to have finally set phases of free flight, particularly rubber- 74 MODEL BUILDER powered models. His work in advancing the cause of old timer flying was outstand ing with numerous demonstrations of vari The POLISHED ous aircraft. Like all of us, Vic wanted to iS B S f build a model of every full-size aircraft he Approach to had flown. MONOKOTE* Alas, this was not to be, as with all of us, he ran out of time. To put it succinctly, APPLICATION! Dubery was a totally aviation person. h o t s o c k The NEW MonoKote® We also received notice from Karen Bran non, 2220 Mariposa, Casper, Wyoming HOT SOCK™ 82604, informing Don Bekins that Charles ____ ; t r s A simple, easy-to-use cover for your W. (Chuck) Brannon, Jr., had died at the iron's shoe that virtually eliminates young age of 58 on June 15, 1988. surface scratches. It's a buffer of Chuck was very active in modeling, com 1 0 0 % cotton between the hard shoe pleting, organizing, and serving in various of your iron and the mirrorlike finish administrative positions including a sting as of MonoKote. Associate VP for District 9 of AMA. Results? Even easier MonoKote Brannon w ill be best remembered for his application without hazing or work in founding SAM 46 and his profound scratches. New life for your old interest in old timer model activity. Sam 46 iron shoe. Fantastic on wingtips, members are going to miss the tremendous solid surfaces ... wherever you interest Chuck had in Antique Class cover with MonoKote. models. · Only from TOP FLITE! Who else? Old Tim er...... Continued from page 34 TOP FLITE MODELS, Inc. Bee has just the right conservative power to 2635 So. Wabash Ave. U-S.Palent* 4.660 ln 7 fly the model. Both Dick and Jim recom Chicago, IL 60616 mend about one notch above cruise setting on the needle; Jim uses a 6 x 3 prop, and Dick uses an 8 x 4, no side thrust, and just a little bit of down. The flaps are set at about 30 degrees up. Dick use-d 1/32 ply for the Q u a r t e r -s c a l e c a p io b notched trim holders, while Jim held the tabs in place with pins through the rudders. Turns are made by bending only the tab on the rudder that is to be on the inside of the turn. The principle is similarto that used on the full-size Northrop wings; it's drag that produces the turn. It might even be possible that the trim tab on the inside rudder could be bent in either direction, just so it pro vides the drag needed to hold that wing back, pulling the aircraft in the desired direction! That's not gospel, but try it and see. In producing the full-size drawing, Phil Bernhardt noted that the magazine drawing had some inaccuracies. For instance, the fuselage pod was drawn minus the strip planking, yet the nose block was shown ie CAP 10B is the only CAP that showed absolutely no tendencies to stall flush with the first bulkhead. And the 1/16 a wing on landing no matter how slow it flew. It is extremely docile to land but sheet around the cockpit is shown as set in is capable of full aerobatics including Lomcevaks. It is a pleasure to fly.'' between the bulkheads. No allowance was made for the 1/8-inch planking! Oh well, Wing area: 980 sq. in. Kit includes, fiberglass Phil has taken care of that, along with a few $ 2 6 0 . 0 0 Wingspan: 75 in. fuselage with formers in other things. · Length: 62 in. stalled. fiberglass rudder and Coming Soon' Expected Weight: 13-16 lbs. wheel pants, balsa-sheeted Dates Wing Load: 35 oz/sq. ft. foam core wings and stab, F16 12-88 Simply Scale . . Continued from page 25 precut landing gear blocks, F-4 Phantom Other kits now available and vacuum-formed canopy (Sngteengme) 1-89 SR-71 108' Length on the transmitter, but if the transmitter is 14 Corby Starlet 75 Wing more complicated, it may still have to be F-18 Homel A· 4 Snynawk 40 Scaie mdq (Winner of 88 45 Sport wing modified in order to maintain the useful Scale Masters) ness of some of the mixing and dual rates. Mode III fliers are the minority. AIRCRAFT & HOBBY SUPPLIES LTD. For scale modeling, I am here to defend YELLOW the Mode II or single-stick method of flying, but at the same time I am here to chastise many Mode II fliers for the way they fly. Let me explain. I, myself, fly Mode II. Having J10 rtAHOLING SHIPPIHG COO the right stick set up for a joystick control gives me a real feel for the model. As I have 11918 98th Ave. E., Puyallup, gained experience in flying, I have found Suite 201,3040 Palstan Rd., Mississauga, that the one drawback cited for Mode II is WA 98373 (206) 845-8195 Ont. Canada L4Y 226 (415) 273-6757 not valid. The drawback cited is that of the JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 75 lazy left hand. They do not use the rudder MAP Argus Plans & Drawings and throttle control enough. Many seem to think that you use the left hand to taxi and the right to fly. You w ill find, however, that Plans Free flight plans-vintage, scale, competition & gliders. Handbook the more accomplished Mode II flier will U-Control plans-vintage, scale & competition. use both sticks equally in the air and on the One R/C aircraft plans-scale, competition, sport & gliders. ground. Taxiing a high-wing taildragger Plans Boat plans-sport, power, sail, competition, yachts & steam. crosswind is an example of a situation C a r plans. where both hands w ill be busy. W hile the Handbook left controls speed and direction, the right Two Plans for steam, petrol & traction engines. Locomotives, buildings, cannons & clocks. w ill keep the correct amount of pressure on Plans the tailwheel with elevator and w ill use the Handbook Scale drawings of military, civil, private & light aircraft, ailerons to keep the wind from flipping the as well as scale drawings of military vehicles. model over. As with full-size aircraft, the ai Three lerons are important in taxiing safely. Every type of plan for the scratch builder. All ______O f course, during all maneuvers it is im catalogs $3.00 each, or all 3 for $7.50. Spec- j n/| LUPPERGER PLANS portant to use the rudder to maintain the ify catalog desired, and make your check pay- 1 3 0 4 p a\m Avenue correct airspeed. If you do not concentrate ab'e to J M. Lupperger Plans. California resi- Huntington Beach, CA 92648 on using that left stick as well as the right to dents add 6 % tax. Allow 2 -4 wks delivery.______fly, you w ill not be able to accomplish realistic flight with most models. No matter which mode you fly, you must The Only Way to Fly remember to use both sticks effectively for Fabtronics M ark 3 C.D.I pointless system realistic flight. It is also important to de velop a feel for the effect of all the controls. ADVANCED HANDLAUNCH CUDER M ixing functions that are found on many of today's transmitters do not help you to develop a feel for the controls. Many fliers use rudder mixing in an effort to eliminate the need to coordinate rudder with aileron control. The use of mixing does not coor Works Great for Most dinate rudder with aileron, it just adds it. 2 and 4 Cycle engines There is a distinct and noticeable difference Automatic Spark Control now available between adding rudder and coordinating for moat 4 cycle engines. your turns. To truly coordinate your controls C o m p le te S y s te m (L e s s B a t t e r ie s ) ...... $ 6 9 .9 5 to make a good turn you may find that from (add 43 post. & Hand.) FABTRONICS the time you initiate your turn with aileron you w ill require varying amounts of rudder 375 lale Royal» Rd., Galesburg, IL 6 1401 and aileron inputs which can actually be Select wood, D.T. Hardware, Balsa Fuselage. opposite in direction at times in orderto ac Beveled Wing. Available at your dealer. complish a smooth banked turn. This cross controlling is necessary to offset the effects $2.50 shipping on direct orders. of turbulence. If simple rudder mix is em ployed, the ability to properly cross control Complete Supply of Free is inhibited. The result is the quality of the Flight Items & Tissue, Timers, Winders, turn w ill suffer. Crocket Hooks, Front End Bearings, Rudder mix also has a detrimental effect on straight and level flight. As the ailerons Pacifier Refills, Rubber, D.T. Fuse, are used to keep the wings level, the cou Micro-X Kits, Cox Engine Parts pled rudder w ill cause some yaw and make the tail wobble. Realism is diminished. Catalog $1.00 Similar problems can be described with other forms of mixing. They have not yet in CAMPBELLS CUSTOM KITS POSTER - UNUSUAL B/W GRAPHICS AND HIGHLY vented a transmitter that can sense what a Box 5996 DETAILED PHOTO OF WING WALKER ON BI-PLANE MAKE model is doing the way you can. Make sure THIS23-X1S' POSTER IDEAL FOR FRAMING, COLLECTING you do the flying and not the transmitter. It Lakeworth · FL 33461 OR GIFTS. PRINTED ON HEAVY 12 PT. PAPER I F O R $ 2 5 . 0 0 - 3 F O R $ 5 0 .0 0 may take some practice, but the results w ill RUDI TESA · 900 BLANCH AVE, NORWOOD. N J. 07548 be noticeably better in the long run. · ADD *5.00 POSTAGE AND HANDLING problem of inadvertent aileron control in Chipmunk ... Continued from page 37 puts while controlling the elevator and vice versa. Anyone who is a good Mode II flier, all of the other controls come into play in refuels in succession. We suggested to Paul or Mode I flier for that matter, knows that if producing a good loop. Especially with a that he take one to Kiev as a backup ship— he is a good flier there are no inadvertent slow-flying model it is important to fly this is being written prior to the World control inputs. A good flier w ill not let the around the loop using the ailerons to keep Champs—and the look on his face indicated springs in the sticks level his plane. He w ill the wings level, the rudder to maintain the he nearly considered it! be in full control at all times in all axis. A correct heading, and the throttle to main Lots of laughs, applause, and suggestions good flier could disconnect the springs in tain a constant speed and prevent over from the crowd that we (you guessed it) his transmitter sticks and his flying would stressing the model while the elevator input hold a one-design stunt contest with a few not be significantly affected. For example, is adjusted to make the loop round. The of these models. The Super Chipmunk puts when looping, the elevator is not the only simple pull up and wait routine doesn't cut a lot of fun back into flying sessions; overall, control used. it for making a good realistic loop. The we'd rate its flying ability, in stock form, as a It is necessary to use all four control in model must be flown around the loop with "B+." What would we change on the stock puts and both sticks to do a simple loop. great care and concentration. design? Well, (a) move the leadout guide W hile the elevator is the primary control, A problem Mode II fliers have is often a forward about 3/8 inch, or make it adjusta- 76 MODEL BUILDER n e w ! e l e c t r ic B a b y . . . A great stand-way-off scale fun ship designed for 05 electric power. You can perform take-offs, touch and goes and aerobatics with this beauty yet enjoy docile, slow flight for easy landings. Quickand easy to build, this kit includes; pre cut fuselage sides, tail feathers and small parts, hardware, complete rolled plans, step-by-step instructions, formed landing gear and a windshield. The Electro-Combo 40" Span includes the kit, DSC 275 Sq. in. area 075 Hyperthrust 32 oz. flying motor, fused switch weight flat harness with Tamiya connector, bottom airfoil propeller adaptor and 8/4 fiberglass rudder, elevator and propeller. motor or add ailerons too II avey 673 TOWER LANE SPECIAL COMBO PRICE M795 S Y S T E M S w e s t C H E S T E R p a ιο 3 β ο (BASIC KIT s2495) IJORPORATION 2*s*3one4s ble, and use less rudder offset to help re intend to do!" Thanks, Ben, for the very throttle is. It w ill handle 6 to 28 cells and is duce hinging in the square corners; (b) complete report. I think this gives everyone 27 grams (less than an ounce) with leads. shorten the nose about one inch; (c) add 1/4 a "feel" for what is involved in building the The SM-4 is $85. The SM-5 weighs 20 to 1/2 ounce outboard tip weight. Please 40- to 60-size planes from gas kits. Most of grams, handles up to 7 cells, and is $70. The bear in mind that we're purposely being us that do so (I am one) use the gas kit parts next photo shows the boost charger that is "picky" here because we were asked to be. for templates and "build electric." In a 40- now available from Jomar. This charger w ill As supplied, the model is the best flier in size plane this w ill save at least a pound, charge up to 28 cells at about 3 amps, up to the Cox C/L group, and they're to be com and in the 60-size, about 1-1/2 pounds. Most 24 cells at 4 amps. You can buy it as a kit for mended for recognizing the need for a gen of the savings come from using smaller $95 or assembled for $120. This is a very fair uine C/L stunt trainer. dimensions for the wood and eliminating price, particularly the kit, for a charger like Very noteworthy is the inclusion of a cus structure that is there for absorbing the this. All the electronics and the timer are in tomer service "Hot Line" phone number on hammer blows of internal combustion en cluded for this price; the ammeter is not. It the carton. Customer feedback is en gines. Some of the savings come from using is easily added on with in-line connectors couraged. Also enclosed is an excellent lighter wood, but that is probably only by the modeler. There are very few chargers pamphlet on maneuvering, including dia about 2 0 percent or less of the total weight that can charge 28 cells and not all that grams and descriptions of the entire AMA saved. Economy in structure and wood size many that can charge 24 cells. It w ill make Precision Aerobatics pattern. An added bo do most of it. If you build using full-scale an excellent match for the Astro and 60 sys nus is that the carton makes an ideal storage philosophy, you w ill have a light plane. If tems. I look forward to using mine. box for balsa or rolled plans! you build with the "carve it out of a log" The charger uses.a 15-minute timer. I The model comes with a 90-day war philosophy which dominates most designs, think Jomar w ill be coming out with a peak ranty, exclusive of the glowhead (natch'), it w ill be heavy. If you do build right, figure detector add-on later. The charger operates crash damage, and obvious misuse. Retail that your 40 electric will be 1/2 to 1 pound on a 12-volt car battery, supplies 50 volts price is ". . . in the $45 range," possibly less more than the gas plane, and the 60 w ill be DC with no load, and w ill hold that at up to at the discount stores, et al. 1 to 1-1 / 2 pounds more than the gas plane. 4 amps. The charger w ill get hot when As you may have gathered by now, we This is not a serious weight penalty, and the charging packs larger than 24 cells, so Jo highly recommend the Cox Super Chip performance is very good, equal to four mar recommends a cooling fan in those munk for those seeking a quick and inex cycle or better, and equal to most sport cases. pensive way to begin learning the Control flying glow-engined planes. I recommend Several months ago I mentioned the Flit- Line Precision Aerobatics pattern. · the 40 to 60 electrics to any of us who have termouse, a very neat plane kitted by Mole to fly at fields where the 40 and larger gas Power Controls (England). I got a very nice planes dominate. You can "mix it up" with E le c tric ...... Continued from page 27 set of brochures on the Mole products from the rest of them and not get run over! One Stuart Pearce, of Hobby House, 40 Holgate 1/4-inch motor shaft was bent slightly, but, kit that is pretty good "as is" is the Warlord St., Barrie, Ontario, L4N 2T7 Canada, amazingly enough, the Graupner prop did kitted by Bridi. Have fun! phone (705)726-6208. These include the not break. The nose of the plane was about I mentioned the new surface mount throt MT-08 failsafe, which shuts down throttle in six inches deep into the earth. The entire tles by )omar last month; here is a photo of case of R/C failure, chargers in several nose section was pulverized, but, believe it the SM-4.1 should have shot this photo at an models to cover everything from 7-cell to or not, it is rebuildable. And that is what I angle, then you could see how flat this 30-cell packs, electronic on-off and speed JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 77 sign too; it is very light and strong. The blades cannot fold forward, again, very good, since that can cause serious vibra COMPOSITE MATERIALS tion. In all it looks very good. The prices are: $9.95 for the 6x4 prop and $10.95 for BORON - .004 dia. the 7x4 and 8x4 props. You can also buy a KEVLAR CLOTH - 1.0 oz - 1.7 oz - 3.6 oz special hub for $6.50 that ads 3/8 inch di ameter and 1 / 2 inch more pitch to fine tune KEVLAR THREAD - 22 lb test x .010 dia. your system. As said, one motor shaft saved more than justifies buying a folding prop. CARBON FIBER TOW - 6,000 and 12,000 strand Well, for now, Merry Christmas and a CARBON FIBER PAPER - 0.5 oz per yard Happy New Year, may it be electric! · CARBON FIBER UNIDIRECTIONAL CLOTH - 36in wide ARFS ...... Continued from page 29 CARBON FIBER TAPE - 5 in wide ULTRACOTE REVISITED CARBON FIBER SHEET STOCK - .008 and .016 thick In a foregoing column, I discussed the use of Carl Goldberg's Ultracote on the Vec CARBON FIBER SPAR MATERIAL - unidirectional - .035 thick tor, a ready-to-cover model which is also CARBON FIBER FIBER ROD - unidirectional - .250 dia. distributed by the same firm. Now that we have logged a couple of hundred flights on CARBON FIBER TUBING - .312 dia x .250 I D. the Vector (perhaps I'm cheating a bit, as I tend to count every touch and go as a com MICROFILM - Rodemsky's best gold film - .000000012 thick plete flight), I feel I can give a more accurate INDOOR MYLAR - .000059 thick evaluation of this covering material. First, the claims made by the manufacturer are MYLAR HEAT SRINK COVERINGS - only .0015 thick with adhesive entirely true in every respect, something METALIZED MYLAR - .0005 thick for gas bags which is difficult to say about many prod ucts. Ultracote is virtually sag proof, com ALUMINUM WING SKINS - .0015 thick for FA I free flight models pletely impervious to fuel, and tough as the NICHROME WIRE - ,00179dia. - 100 ft rolls dickens. On one memorable flight, some thing glitched my radio badly, control was REAL SANDING SEALER - worlds best glider polish lost, and down she came. At about ten feet of altitude the glitching stopped and I 3M's #465 WING SKINNING TAPE - acrylic adhesive in tape form regained control, just in time to level out ENGINES - COX - ROSSI - PICCO and reduce the angle of impact with the ground. Aside from a broken prop and a AND THE BRAND NEW LINE OF slightly bent nosegear, there were abso lutely no scratches or tears in the Ultracote. e .S . COMPETITION ENGINES As a matter of fact, the entire airframe was completely undamaged, attesting to the .049 - .061 - .099 - .15 - .21 - .61 fact that this prefabricated airplane is built sturdily. All the Ultracote seams are still FOR COMPLETE CATALOG SEND $2.00 TO sealed and holding good as new, and con stant sitting in the hot sun has not produced S t e v e * * , any fading. As previously mentioned, Ultra cote is not a high gloss material but is some what flat in appearance. Though others ------M odel Research Labs ------may disagree, this looks far more realistic to 25108 M arguerite, #160, M ission Viejo, Ca. 92692 me. Ultracote is a really fine product; it has my unconditional seal of approval, so don't hesitate to give it a try. As for the Vector itself, it has proved to be WORLD WIDE SINCE 1980 a great little sport plane, now that we have the leading supplier of composites to all the world's modelers set a substantial degree of throw into the ai lerons. True to my initial impression, it makes an excellent transition model from a basic trainer to something with a good deal more zip and performance. O f course, its controls, and the Flittermouse! The Flitter- Kerr of K&W. I received some samples and I rugged construction and exceptionally mouse has a 57-inch span and looks just am impressed. I have not flown them yet, easy repairability are among its most out right for float flying with a cobalt 5 or 15. All but several readers have reported that they standing features. these are sold by Hobby House. Since work very well. They go a long way towards TIP OF THE MONTH Hobby House is in Canada, an SASE w ill solving three problems in one swoop, Nobody likes to see scuffing on a wing- not work for US citizens, so I suggest you in which is always good! First, they help keep tip, especially on an ARF. Nevertheless, this clude a dollar bill to cover the expense of motor shafts from bending when the plane is really unavoidable, as even the best of us mailing price lists and descriptions. Prices nose hits the ground. Just one motor saved occasionally drop a wing on landing or were not included in the brochures I this way w ill repay the cost of the prop at takeoff. Should a plastic shrink covering get received. Hobby House also sells the Keller least twice over. Second, you w ill get more scuffed, you can always patch it in a few cobalt motors, Geist cobalt motors, and the flight time because you do not have those minutes with a sealing iron and a piece of Ungar cobalt motors. These can be hard to blades sticking out creating high drag when covering. However, if you happen to be fly find, so here is a source! you go back to idle or off. Third, the prop it ing an ARF with solid plastic wingtips, you Sonic Tronics is a well-known name in self should last much longer, since it can sometimes have to live with scuff marks, as modeling; they are now marketing folding fold instead of break in a bad landing. My repairing them is usually more trouble than propellers for direct-drive electrics. These impression of the blade design is that they it is worth. Runway rash can often be re are the props that were designed by Tom should be quite efficient. I like the hub de moved from ABS-type plastic by gently ap- 78 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER INTRODUCING THE FIRST CONLEY PRODUCTION 4-STROKE we’re talking “DOHC 4-Valve”! Just like "Cosworth". "BMW", even "Maseratti"! We're talking DUAL O/ER HEAD CAM. 4 VALVES PER CYLINDER. 1.2 CUBIC INCH. WORLD CLASS POWER HOUSE. HIGH TECH DESIGN BEYOND STATE-OF-THE-ART PRODUCTION. We heard. We waited. And now we're talking CONLEY! [ © Head boasts double O C intake and exhaust valves Suggested Retail Price $26995 Dealer Direct Inquiries Invited From famed quarter scale V-8 utilizing the race-proven Cup and increases engine power and engine builder Gary Conley, Disk system of valve adjustment. efficiency. comes the first in a series of high This eliminates less efficient Conley precision engines are performance, precision built pushrods and rocker arms that are made in the U.S.A. utilizing only model engines. Designed to be a forever in need of adjustment. In standard SAE threads and are powerful, durable and low addition to this high tech valve available factory direct or through maintenance model aircraft train, paired hardened and ground select dealers nationwide. engine, the new Conley 1.2 has steel intake and exhaust valves If we're talking high perform features you'd expect to find only add better breathing and work in ance. and American, and great on European supercars. Like belt- unison with a hard chrome R/C model engines, then driven dual overhead cams cylinder that reduces weight and WE'RE TALKING CONLEY. “ World Class Performance - Made in the U.S.A. ” 820 Ridge Avenue Suite G Dept B Lombard. Illinois 60148 (312)953-8882 some future time. Buck Faure, my pattern flying buddy from Encinitas, California, told me that the way he copes with this problem is to prevent it from happening in the first place. To do this, just slip into your local paint or hardware store and buy a roll of clear vinyl tape. Put a layer or two on the bottom of each wingtip, and your troubles @ & ΊΪ4ί*Η Λ 4. are over. The vinyl is super strong and pro *The gift of memory past tective, and it can be replaced as often as *The joy of free flights present, and necessary. Many thanks to Buck for sharing this worthwhile tip. *The thrill of its anticipated future... ARFS IN ACTION All contained within the sixty minute, broadcast quality It is outside the realm of possibility for anyone to personally test every ARF on the video entitled: to- tyocin ^a 4 t M.d, “PwAM t. market, nor even to be entirely familiar with This themed presentation, narrated by R. J. Theiss (dean of all the ARFs available today. So I do just what you would do. When I see someone air show action) is a must for the flying model enthusiast of with an interesting ARF I haven't evaluated yesteryear and today. myself, I strike up a conversation and ask what he thinks of his airplane. From time to Countless hours of nostalgia and exciting present-day free time I intend to recount some of these dis flight action for only $34.95. Visa and MasterCard Accepted cussions in this column, and this month I Write: Flying Video Productions . „ „ _ „ would like to tell you about Mark Silzle of ΛΛΛ .. ,, ■ n, . Professionally Produced By Costa Mesa, California, and his Bell P-39 920 North Main Street Flying Video Productions Aircobra by Sure Flite Enterprises. Mark has Southbury, CT 06488 Subsidiary of RBY Studios put a lot of flights on this all-foam ARF Or Call: (203)264-3666 Southbury, CT model, and he has nothing but praise for it. He applied a scale-type paint job and in stalled a Saito .45 four-stroke engine. He _ CANNON Phon. (805)581-5061 really likes this engine/plane combination r i c s y s t e m s 2828 Cochran St Suite 281 because there is plenty of power and the Sltni Valley. CA 93085 sound is so realistic. Furthermore, the tri 1988 SUPER-MICRO R/C SYSTEMS cycle gear is really easy to handle on the ground, and it makes taking off a simple “Matched Performance System” M O D E L 9 1 0 task. All maneuvers, including rolls and for TOP PERFORMANCE SUPER-MICRO SEE Y O U R K&B ENGINES snaps, are tight, and the model seems to R / C S Y S T E M D E A L E R O R Airplane Marine have no bad flight habits. Landings are slow 1 A i O R D E R KSB FUELS K&B GLOW PLUGS and require no great skill, so Mark feels this 1 — ■ 9 Blends 4 Choices DIRECT quick-to-assemble model is ideal for the in “Matched Finish System” termediate pilot who wants to try standoff MADE IN for BEST APPEARANCE U.S.A. scale and is somewhat lacking in taildrag- K&B FI8ERGLASS CLOTH K&B Micro-Balloons FILLER ger experience. K&B SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER K&B SUPER POXY PAINT 1988 RENO NATIONAL AIR RACES K&B MIXING CUPS Having just returned from one of the most K&B MANUFACTURING memorable aviation experiences available < 3 D 12152 Woodruff Avenue in the entire world, I just couldn't resist in i y e s ? Downey. California 90241 cluding a few of my observations. This year 05 commemorated the 25th anniversary of the NARROW BAND 750 MW TX , WITH AMA GOLD Reno National A ir Races, and they were STICKER, SERVO REVERSING, MUCH MORE! TX & NARROW BAND RX WORK ON 1991 20 KHZ held on four days, September 15 thru 18, at SPACINGS, AVAILABLE ON NEW 72 FREQS. LAST... Stead Airfield, about 10 miles outside of IMPROVED CE-9C MICRO SERVO - $ 4 1 .9 5 A Free Flight Model Reno, Nevada. As usual, four classes of rac Retrieval System that „ SUPER-MICRO SYSTEM PRICES (72MHZ) ing were scheduled; Biplanes, Formula works . .. EVERY TIME. One, AT-6 , and Unlimited. Racing heats 2 CH. 2 SERVOS (2 .3 7 O Z .) $ 2 3 7 .9 5 An ultra light weight, long range were interspersed daily with various flying 3 CH. 3 SERVOS (2 .8 1 O Z .) $ 2 8 0 .9 5 miniature transmitter combined with a exhibitions. These included the Air Force A CH. 4 SERVOS (3 .2 5 O Z .) $ 3 2 4 .9 5 highly sensitive receiver and directional Thunderbirds, military parachute drops, antenna will quickly help you track and novel helicopter performances, and an al 5 CH. 4 SERVOS (3 .2 6 O Z .) $ 3 3 5 .9 5 locate your plane. most unending series of stunt demonstra TX DUAL RATES $ 1 5 .0 0 MIXER $ 3 9 .9 5 NEVER LOSE ANOTHER MODEL! tions by various aircraft including Stear- SYSTEM S 4 H $ 8 .5 0 mans, Pitts, gliders, and a P-38 that could Send SASE For Brochure NOVA AND CLASSIC NARROW BAND R/C A V A IL. bring tears of joy to your eyes. As always, BROCHURE $1.00 IN U.S.A. AND $2.00 Jim Walston Bob Hoover, the undisputed leader of FOREIGN. ADD EQUIPMENT SALES TAX IN CA. Retrieval Systems American stunt flying, showed up with CASH PRICES SHOWN. 725 Cooper Lake Rd. S.E. three aircraft and went on to prove that his CARDS 5% MORE Smyrna, GA 30080 ability to thrill a crowd is as good as ever. 201 DEPOSIT ON COO 404/434-4905 As a model airplane enthusiast, I was most interested in going directly into the plying a quick swipe of acetone to the area pits to get a really close-up look at the fa with your fingertip. Your finger should be plications are required, wait until the previ mous aircraft and their intrepid pilots. heavily coated with the solvent, and the ap ous one is completely dry, at least 10 or 15 Nothing could compare to the excitement plication must be made smoothly and minutes. Actual punctures in ABS plastic of walking right up to Alan Preston's "Dago quickly, and one time only! Don't move can be repaired by making a paste out of Red" P-51 and actually touching it! As a your finger back and forth, just move it in plastic scraps dissolved in acetone, but this Mustang fan, I was in ecstasy as I came one direction in a straight line. If more ap is a whole new subject we will cover at upon Bill "Tiger" Destefani's 1987 un- 80 MODEL BUILDER limited record-setting "Strega," John Dil- ley's "Vendetta," and Ron Smythe's "Miss America," with its unmistakably patriotic color scheme. Add to these a Corsair, an F8F-2 Bearcat, a number of British Sea Fu ries, and a couple of Yaks, and the specta The Hobby Box tors were in warbird heaven. I w ill never for W ith 3 years of solid experi get John Sandberg's fabulous "Tsunami," an ence and 35 w holly owned unbelievably sleek aircraft, which appears stores, The Hobby Box has to be a highly modified P-51, but is actually already established itself as the leading hobby retailer in the a look-alike built from the ground up. It was Southeast. fascinating to see these planes literally torn The American consum er is spend down and rebuilt between heats, with parts ing more and more time and strewn all over the place and ground crews money on their leisure activities, frantically working at top speed. and the national hobby market is Though the flying continued at a continu already estim ated at $4 billion! N ously frenetic pace, I nevertheless found time to stroll among the vendors and view FRANCHISES NOW AVAILABLE some of the interesting exhibits in the dis ■ Take advantage of the surge of consumer interest in play areas. It was here I stumbled across the Radio Controlled cars, boats and planes; plus the booth manned by the Reno Radio Control steady demand for models, trains, puzzles, games and other hobby supplies. Club. These enterprising fellows were raf E fling off a number of ready-to-fly R/C ■ Franchise support package includes site selection, inventory recommendations, interior design and models, and they seemed to be doing a advertising support. land office business, with customers lining ■ Choice locations now available. up to buy tickets. Many other interested race fans stopped by to take a closer look at MINIMUM CASH The Hobby Box Marketing, Inc. W the models and to ask questions. All this REQUIREMENT 1355 Bennett Drive proved to be an excellent public relations $50,000.00. FOR Longwood, Florida 32750 affair, as well as a club moneymaker. FURTHER INFOR Parked next to a full-sized "Knight MATION PLEASE Twister" was a quarter-scale miniature of CONTACT OUR the original. This model was constructed by FRANCHISE (407)332-1313 Don Fairbanks and was a static display not DIRECTOR. intended for flying. Don told me that after 18 years of competition, the full-sized Twister was going to be retired. It w ill be placed on exhibit in the EAA museum at the conclusion of this year's races. I hope that each of my readers can some day have the opportunity to attend the Reno WE SET THE PACE! National Air Races. It's something you w ill re Michigan’s most complete supplier of F A I R U B B E R model kits & accessories—if it's member always. Thanks again for being with S IZ E S : 1 /4 ", 3/16". 1/8". 3/32". 1/16" featured in Model Builder Magazine us this month, and, as always, your com . 042 thick one pound box. we probably carry it in stock. ments are always welcome and appreciated. We love to help beginners as well Contact me at 2267 Alta Vista Drive, Vista, Price: $13.95 no lube ISlick costs $1.75) as the dyed-in-the-wool enthusiasts. California 92084; (619) 726-6636. Price: $14.95 includes 4 oz. Slick Lube. Postpaid in US via UPS Ca. add 6% tax. Give us a try! MEMBER R/C Soar...... Continued from page 43 100 FF kits inc. Coupe Deville, Starduster, Radio Control H.L. Gliders, Pee Wee 30, Potent 30 & more. Hobby Trade and Woody Blanchard (electric power Satellites, 3 Pearls, Pacifiers, KSB, Seelig Association booth). My apologies to all in this list timers, Tilka, Open rubber, front ends. Fuse, J®E5 whose many accomplishments I have prob 3 prop kits. Winders, Books, much hardware. ably just glossed over! 7845 Wyoming · Dearborn, Ml 48126 · (313) 933-6567 EAST COAST NEWS 1988/89 CATALOG S1.50 17900 E. 10 Mile Rd. · E. Detroit. Ml 48021 · (313) 7734294 Rich Border of Keansburg, New Jersey, 35203 Grand River · Farmington, Ml 48024 · (313) 477-6266 sends us some photos of some of the action F. A .I. Model Supply 105 & Uvemois · Rochester, Ml 48063 · (313) 651-8842 from his part of the country. Let it never be P O BOX 39V TORRANCE CA 90510 said that Model Builder only has West Coast stuff in it! Thanks, Rich, for the input! could be modified. His project features a Basically, the photos were taken at two ahead mush. Fred also added a boundary shortened nose (by one inch), a new T-tail, contests this summer. The first was the Cap layer "trip strip" at the 2 0 -percent chord an Eppler 193 airfoil for the wing, a one- ital Area Soaring Association's (CASA) Un point all along the wing. Three layers of inch increase of polyhedral at the tips, and limited Class contest flown on September .007 x .125-inch trim tape made up the trip. a 90 percent switch to contest-grade wood. 10 and 11, and the second was the Long Is He reports that the wing now makes more With a Thermal Sniffler aboard, the model land Silent Flyers (LISF) Two Meter Class lift than before and requires a couple of weighs 34 ounces. Well done Irving! contest held September 17 and 18. clicks of down trim. Walter Panknin of the LISF took a "Fat Because most of the information sent Anthony Quesada flew a 1/6-scale Reiher Bat" kids' plastic baseball bat, a toilet tank with the photos w ill fit in caption space, scale glider from a Krick kit (available from float, a pair of arrow shafts, and the good this write up w ill be kept short. Hobby Lobby) in the CASA contest. It wasn't old Clark Y airfoil section, put them all to Fred Gregg flies a Stretch Gemini built by competitive and wasn't meant to be, but it gether and designed a very comic R/C bird. a fellow modeler, Bob Champine. Fred was a lot of fun. Anthony likes the model He calls it the "American Birdie." Although finished the model and added "swiper tips" well enough to begin building a 1/4-scale it hadn't been flown when the picture was to its wings made out of blue foam and version of it from blown-up Krick kit plans. taken, Rich tells us that Walter has some Solarfilm (Hobby Shack Flite-Kote). He says Irving Wolk took a Top Flite Metrick kit thing similar which flies quite well. Let's the stalls are now very soft, almost a straight and modified just about everything that hope Rich doesn't mean the next sail- JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 81 in Australia, and indeed to the rest of the world. LSF after all is not just an American New Fourmost Fillet organization, it is truly worldwide. "The second LSF milestone is just as EASY unique and probably not as widely antici pated. Most people, on completion of the Level V tasks, breathe a deep sigh of relief that their quest is finally over, and they can become ordinary sailplane pilots again. Not Bob Champine of Newport News, Vir ginia. He decided to do it all over again, starting with Level I. "First he signed up with LSF as Bob Stop messing around with gummy fillers and sticky Champine. On the second sign up he used putties. Use the Fourmost Fillet and get a clean his full name, Robert A. Champine and perfect contour without the hassle. received his second LSF number. This was The Fourmost Fillet is a continuous strip of vinyl necessary in order to track his accomplish ments on the computer. He then proceeded preformed to make a perfect fillet. to work on his Level I tasks again! (Remem The Fillet may be easily installed with cyanoacrylate ber those spot landings in Levels I & II?) adhesives and can be finished with either paint or "Level I was completed on January 31, 1985, and Level II on February 16, 1985. Ap iron-on materials. The Fourmost Fillet is also perfect parently he liked cold weather as well as for wing saddle seats. spot landings! Level III was finished for the second time on September 22, 1985, and 4040 24th Ave. 2 sizes: small No. 128 Fourm ost he then went on to Level IV. Not unexpect and medium No. 129 Forest Grove, OR 97116 edly, this took until August 23,1986, nearly Price: 4 feet - $3.50 Products (503) 357-2732 a year. "Achieving Level V twice took two years, being completed on August 13, 1988. Bob Champine, who has many firsts to his credit HAVE YOU TRIED FULL-SCALE7 in both full-scale and model aviation, thus adds another first to his list: -he is the first AFTER YOU DID ALL THE WORK, WHY LET Double Level V. YOUR AIRPLANE DO ALL THE FLYING? "LSF is proud to have people like Mai Pring and Bob Champine as members with info $ 3 oo BUILD & FLY THE miniMAX YOURSELF! their determination and love for the sport of R/C Soaring. We are also pleased that the tasks form ulated twenty years ago in California are still found to be so challeng ing today by people all over the world." Now fora mini account of Bob's last goal on the road to Double Level V, here is a report stolen from the Tidewater Model Soaring Society's newsletter, Colin Britcher, editor. "CHAMPINE GETS LEVEL 10!!! "After sinking like a brick from launch, * Computer Designed • 3 Axis Control the much travelled and frequently bashed AWARDED SUN-N-FUN 8 6 . Part ; o 3 ultral?ght • Easy Construction 'Stretched Gem ini' started to clim b just the “Most Innovative New Design" · wood Construction other side of I-664. Within ten minutes or TEAM INC , BOX 338M. BRADYVILLE, TN 37026 (615) 765-5397 so, it was 'specked out' in a good-looking cloud over the Mercedes plant, which hap pened to be down wind. A crowd began to plane. . .. challenging and rewarding to those who assemble with a feeling that today might be Walter also flies a design he calls the Al- strive for the top. Membership is limited to the day. A little further into the flight, Bob cedo. The Alcedo is a bird in Germany those aspirants who have achieved Level I. decided that he was getting too high and which likes to dive straight down. Walter's LSF President Bob Steele recently sent me too far down wind, so spoilers were Alcedo two-meter sailplane features a a press release. It is self-explanatory, so here deployed to shed a couple hundred feet homemade molded fiberglass fuselage, a it is: and the model was brought up wind, back wing with a Ritz 12-3 airfoil, ailerons, and 'The League of Silent Flight has reached towards the field, straight under another V-tail with elevator function only. two significant milestones in 1988. The first good-looking cloud forming over the Mer LEAGUE OF SILENT FLIGHT has been long anticipated, the second is cedes plant. That turned out to be the story The LSF is a nonprofit, national organiza something of a shocker. of the whole flight. A perfect'thermal street' tion devoted to the promotion and ad "Mai Pring of Valley View, South Austra just seemed to form right over the field and vancement of the sport of R/C model sail lia, has become the sixty-second member stretch away straight down wind. The plane flying. It has a program for personal to achieve Level V status. Perhaps more sig model was never below 1500 feet for two goal setting and recognition of skills that is nificant is the fact that he is the first person hours, spoilers were used frequently, and widely regarded in the USA as the standard not residing in the continental USA to ac the two hours finished with the model still by which a person's flying abilities are complish this goal! clim bing strongly. judged. They are known as Levels. Usually "Mai has been working on his Level V "All this means that our very own Bob represented by Roman numerals, Levels I, tasks since October of 1982. The final task Champine, who may not have been the first II, III, IV, and V are each progressively to be completed was the eight-hour slope to complete Level V (He was 34th. bt), is the harder to attain and require more and more duration done at a place called Anstey's very first person in the world to do it twice!" dedication and discipline to achieve. These H ill on January 15, 1988. Thank you Bob Steele and TMSS for the levels were established in the late sixties "I feel sure that Mai Prings's achievement news, and congrats to Mai and Bob on their and even today are recognized as being w ill give a solid boost to the LSF movement achievements. For info on becoming an LSF 82 MODEL BUILDER member, contact Bob Steele at 10173 St. Joe Road, Fort Wayne, Indiana 46835. TIME TO BUILD A GLIDER With the building season in full swing, it's Technopower’s time for everyone to get back to the work bench and get cracking (and sawing, and sanding, etc.). I hope Santa Claus treats you well this Christmas and that your projects NEW are all coming along fine. My Christmas came a little early this year. On September 27 at 8:49 p.m., my wife Ka thy and I were given a second son, Andrew W illiam. He was born six weeks prema BIG BORE turely, but weighed 5 pounds, 14 ounces and measured 18.5 inches long. After a week and a half in the Neonatal ICU, Andy came home in great shape. . . .Just had to crow a little! Thermals, Bill Forrey, 3610 Amberwood Ct., Lake Elsinore, California 92330, (714) 245-1702. · Hannan...... Continued from page 57 Wish Foundation during the Rocky Moun tain Free Flight Championships, represent ing model builders from five states. It is hoped to continue this charitable fund raising on an annual basis. NOW THERE'S A PRIZE! According to Blue Ribbon o f the Air, by Henry Serrano Villard, Louis Paulhan won his 1902 Voisin biplane as a prize in a model airplane contest! Since it did not in clude an engine, Paulhan borrowed money to buy a Gnome rotary for it. MODEL SUPPLIES ARE WHERE YOU FIND THEM Tom Matterfis, of Clearwater, Florida, ob tains model building materials from un common sources. Many "good old days" designs were constructed from reed, but • 7 Cylinder · Master Rod Runs on Needle when did you last see any in a hobby shop? • 4 Cycle Bearings Tom suggests the basket weavers have • Overhead Valves · Rocker Boxes Are Investment Cast. plenty of it, and at reasonable prices too. • Glow Ignition Balance of Engine is Bar Stock His comes from Begley Caning and Basket • Displacement 2.0 cu . in. · Hardened and Ground Steel Cams Supplies, 3517 North High Street, • Red Line RPM 9000 · Hardened and Centerless Ground Columbus, Ohio 43214. They ask $1 for • Flying RPM 8500 Valves their catalog, which is filled with unusual • 6-5/8” Diameter · Weight 30-1/2 oz. materials, tools, and finishes. Their reed is • Hard Chrome Bore FOR INFORMATION, SEND S3.00 TO available in sizes from 1-1/4mm to 7-1/2mm • Cast Iron Piston Rings diameter in one-pound coils, which Mat • 14/6 -16/8 Prop Range TECHNOPOWER II INC. terfis says "w ill keep a dozen modelers busy • Extra Heavy Crank Shaft 610 North Street for several lifetimes." Tom also advises that Chagrin Falls, Ohio 44022 silk thread, so useful for rigging model Supported By Ball Bearings planes and ships, may be obtained through Fore and Aft firms catering to fishermen, since the • Phosphor Bronze Valve Guide thread is employed in fly-tying. FLYING IN FLEMALLE Thanks to reports from Benno Sabel, Lu- Class w ith a top time of 63 seconds, and Florida, which placed 19th with a respecta bomir Koutny, Antonin Alfery, and Sigfried Jacques Delcroix, of France also, had a top ble top flight time of 56 seconds, proxy- Glockner, we have the results of the 1988 time of 112 seconds to take first in the Open flown by F. L. Van Hauwaert. Flemalle, Belgium, indoor contest. Mod class. George Kandylakis, of Greece, ended up elers from Belgium, Czechoslovakia, with 512 scale points and 19-second flights France, Germany, Greece, Holland, Japan, Peanut Duration (|unior) I. Christoph Mannot France Fokker E III to take first in the Maquette Open Class. and USA took part in the annual affair, 2 Chnstoph Mannot Utlksplane ) Christoph Hanriot Rottier WO TS Peanut Maquette (Open) which includes practically all indoor 4 Thomas Merit Germany \blksplane 1. George Kandylakis Greece Axto F categories. Since we anticipate that "Mr. In 2 Antonin Alfery Czechoslovakia Spitfire Peanut Duration (Open) V Antonin Alfery Czechoslovakia Mesverst hmitt siders," Dave Linstrum, may report on the 1 Jacques Delcroix France lacey MK) 4 lubomir Koutny Czechoslovakia Alhatros \V4 2 JurgpnlM»il Germany Cloudbuxler 5 Benno Sabel Germany 1910 Depertfusvn non-scale models, we'll concentrate on J Antonin Alfery Czechoslovakia Hemkrl HeTOG 6. Antonin Allery Czechoslovakia Aichi Seiran Scale. 4 lubomir Koutny Czechoslovakia Kalinin Κ-» 7. Benno Sabel Germany Bleriot VIIIC 5. lacques Detenus France Trrmptk 8 Heinz Neumann Germany BD-4 Two Peanut categories were flown: fx Antonin Alfery Czechoslovakia Fatman Mosquito 9 Maunc v Muyhtwhts Belgium RSV 18 »0S Peanut Duration, which favors perfor 7 lurgrn VMnl Germany Sky Rider ΙΟ I Bouidcaud Ήυι France Pitts Special 8 Siegfried Glockner Germany ktolksptanc· mance, and Peanuts Maquettes, which 9 Henri Frakm Belgium Pother 100 TS The Junior Peanut Maquette category favors moderate flying, highly detailed 10 lacques Delcroix France Puttier 180 was won by Thomas Merkt of Germany fly- models. Christoph Hanriot, of France, The sole U.S. entry in Peanut Duration ing a Bleriot XI. made a clean sweep of the Duration Junior In Pistachio Scale Jurgen Weil, of Ger- JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 83 COLLEGE OF GLUE KNOWLEDGE Flex Zap Perfect for fiberglass to hardwoods or fiberglass to fiberglass. Not a wonder drug...you must provide excellent fit. Do not use Kicker with Flex Zap. Allow up to 3 minutes to dry. One or two drops squeegied out are all that's needed. Overglueing causes longer drying times. Strongest CA available. Doesn't work on porous materials like balsa. Super for mounting race car tires to rims! Prof. Sticky VonShtuck Pacer Tech, Campbell CA "His models are amazing. He doesn't speak peck si/ver-Streak either of my languages and I don't speak German, but we understood ourselves well." And isn't that the most rewarding part of our hobby? We think so. Another contest is scheduled for August 25, 26, and 27, WE SPECIALIZE IN : 1989, at Flemalle, Belgium. RUBBER POWER,C02,ELECTRIC FIFTIES FLYERS QUALITY KITS,PLANS, TISSUE,PROPS, Time really does fly! The latest book from BEARINGS, WHEELS AND MUCH MORE 035 ELECTRIC MOTOR Argus Press Group is a retrospective look at C02 ENGINES model airplanes of the 1950s, which now SUPER LIGHT WEIGHT ELECTRIC TELCO ■ MODELA ■ BROWN ■ DAVIS WEIGHT ONLY 2 .6 OZ , USES LESS CURRENT seem to be taking on some of the aura of LOWER CURRENT MEANS SMALLER BATTERIES ALSO NEW I THE “ 1300 R/C BLIMP" "O ld Timers," which is a difficult concept TURNS 6-3 PROP 12000 RPM , ONLY 6.5 AMPS CATALOG #30 - $2.00 for those of us in the graying set to accept! IDEAL FOR SMALL R/C 6 FREE FLIGHT Be that as it may, Vic Smeed, who did FLY 30 TO 48 INCH WINGSPAN MODELS such splendid work on earlier books in the MOTOR ONLY $19.95 Peck-Polymers series, has gathered 166 free flight control R/C OR F.F. SYSTEM $62.95 BOX 2498 LA MESA, CA 92044 PHONE (619) 448 1818 line and radio-controlled model designs which were published or kitted during 1947 to 1959. Most are reduced; however, some are printed full size. Many are by well- P.A.W. DIESELS known designers such as Louis Garami, Sal Taibi, Howard McEntee, Bill Krecek, Roy L. •049 to -35, RC & STD Clough, P. E. Norman, Clarence Mather, MERCO moaoNXL · fmiNOLV ainvrca Bob Palmer, Gerry Ritz, Ray Malmstrom, SEND $1 FOR LISTS & Paul Plecan, Frank Ehling, Paul Del Gatto, MERCO C/L & R/C ENGINES and lots more. Truly a comprehensive col USEFUL DIESEL INFO. lection w ithin 96 pages, even if it does SEND S2.00 FOR CATALOG ERIC CLUTTON, make us feel the clocks are increasing CLASSIC REPLICA CL PLANS speed lately. BOLLY COMPOSITE PROPS 913 CEDAR LANE, Flying Models, Favourites of the Fifties MERCO PARTS & SERVICE TULLAHOMA, TN.37388 also includes useful kit and model engine lists (ignition, diesel, and glo types). DAVIES-CHARLTON DIESELS! AIRCRAFT ARCHIVES NEW PRODUCTION! Also new from Argus Press Group are two T o m D ix o n DART .03 EXCELLENT volumes in their Aircraft Archives series 1938 Peachtree Road Suite 401 MERLIN .045 QUALITY. Bombers o f World War Two and Post-War SPITFIRE .06 ENGLISH lets. These compilations of magnificent Atlanta, Georgia 30309 SABRE .09 MADE. scale drawings are in the Aeromodeler and Scale Models English magazine tradition, which makes them unusually suited to many, won with 460 scale points and a 59- 11 Benno Sobcl Germany Windham 1909 9 ShoKhi U hrdj kH»an Lacey MM) model building and proof-of-scale second top flight. Bill Hannan, of the USA, Ml Pascal Orvm France Famun Mosquito purposes. took sixth and was proxy-flown by Siegfried Antonin Alfery, attending the Flemalle The Bombers book features the work of Glockner. contest for the first time, described it thus: technical artists such as G.A.G. Cox, Ian R. Pi\Li« hk> Sc Air (Open) I lurgen \Wil Germany Cloudbustw "Unusual rules, unusual models, and an Stair, Bjorn Karlsrom, J.D. McHard, and 2. Antnmn Alirrv C/whuxlusakw Sprint* Mk XI unusual hall. . ." And people? 'The same many more. Their subjects include such l Antonin Alkry C/eihoskAdiiia Drzcwiccki Canard 4 Jacques Dekroix France fattier WOTS as in our country; some of them build model-worthy selections as the Fairey i Antonin Altrrv Czechoslovakia Waterman Racer models for victory and the others for fun." Swordfish, Boeing Flying Fortress, Handley- b Bill Hannan USA Renard SR 78 7 Luboimr Koutnv C/cchodosaku Co.Hebaud tandem Tonda was delighted to meet Benno Sabel: Page Halifax, Consolidated Liberator and 84 MODEL BUILDER Privateer, Martin Marauder, Junkers Stuka, Avro Lancaster, llushin Stormovik, and oth ers. In addition to exquisite detail, these publications provide photographs and complete specifications; as the Introduc tion explains, . . levels of intricacy to satisfy the most demanding enthusiast." Post-War lets should have special appeal to the ducted-fan and Jet-X model aficionados who may be searching for unusual projects. Like flying wings? Here's a choice selec tion: De Havilland DH108, Douglas F4D-1 Skyray, and the Avro Vulcan. Or, how about a jet-powered flying boat; those don't turn up at scale meets every day! The Saunders- Roe SRA/1 is just the ticket, if you like challenges. Or, maybe you'd prefer to model a BAC TSR2, described in the book's introduction as ". . .a monument to a political disaster; an engineering achievement which was cast on the scrap heap by a sad error of government judgement but is thankfully not oblivious." Along more conventional lines, we find a MiG-15, which, to our sur prise, was drawn by Ron Moulton! Nice job, Ron! And a Gloster Meteor, De Havilland Vampire, Douglas Skyhawk, and many more, even a McDonnell Douglas Eagle and some jet transports. All three of these fine Argus books are available through Zenith Aviation Books (see their MB advertisement for address) or directly from the publishers at: Argus Books, Wolsey House, Wolsey Road, Hemel Hempstead, Herts. HP2 4SS, England. MODELING IN MALAYSIA Ho Tet Shin reports finishing a simple rubber-powered helicopter for his five-year- old son: 'The gleam in his eyes as it lifted out of his hand really encapsulated the joy of aeromodeling. I must now look fora way of squeezing time out to finish some models. When it is not raining, we are blessed with almost perfect flying weather, being almost flat calm every morning and late evening. By the way, I still get looks of pity when I tell others that I fly rubber- powered model aeroplanes as a hobby." SIGN-OFF Ed Whitten sent us a newspaper report of a Chicken Flying Meet, held every year out side Gallipolis, Ohio. The article, by Lonnie weights, from 0.75 to 6 ounces or more. layer of 1.5-ounce glass on .60-sized Wheeler, explains that most chickens have Dan Parsons sells a very light (0.6 ounce) models," an oversimplification, but this lost the art of flight through generations of fiberglass by mail order, along with useful writer is too green at this type of model con domestication and need extensive retrain instructions for fiberglassing. You w ill find struction to tell you "just how much glass ing before the contest. The idea is to urge Dan's ad in RCM. Dan seems primarily con you will need for a given application on them to fly from the top of a hill to their cerned with putting very light fiberglass your model. We w ill learn together on this food, which is moved further away each over already structurally adequate models one. I will tell you what I already know, or day. The lady chickens are generally lighter, as a step in achieving a rugged finish. My think I know, on the subject, however. thus generally better flyers than the males, goals, as described in this column, are dif Frankly, my first self-designed all-foam-and- and the current record of 302 feet, 8 inches ferent. In the interest of low weight, the air fiberglass model is only half completed at in distance was established by Lola B.,ahen planes I fiberglass would fall apart without this writing, so the following are guessti from West Virginia, doubtless in the the glass because they are nothing but mates based on a lot of other model design featherweight class. · hollowed-out foam. The epoxy/fiberglass is experience and an engineering back the structure. Therefore, in most cases, I use ground. Ask me next year and some of my Technical S tuff Continued from page 11 1.5-ounce glass to get adequate structural answers w ill have changed. strength (for .40- or .60-size models) in a sin How much glass not on ly depends on the especially tricks that make composite- gle layer of glass. Dan says you should put strength requirements for the part of the air material structures practical. on more layers of finer glass cloth, but that plane we are looking at, but on the foam FIBERGLASS is more work than a single layer, and I'm al core, and whether we are glassing both The weight of fiberglass cloth is specified lergic to work that can be avoided without sides of the core or only the outside. Where in ounces per square yard. Sig, and several penalty. you can get at the inside of the part you are other model companies, sell it in con HOW MUCH FIBERGLASS? making, glass the inside as well, because veniently sized packages of different Actually, not only is the statement," "One that makes it into an inherently high- JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 85 the model structure. For the fuselage of my model under con MAMMOTH SCALE PLANS struction, I again used a single layer of 1.5- C E S S N A 180 - 108" Wingspan BOEING F4B2 - 90" Wingspan ounce glass, this time over hollowed-out CURTISS P40D - 102” Wingspan DOUGLAS 025C - 80" Wingspan blue foam. I w ill add another layer of 1.5- BERLINGER/JOYCE P-18 - (102 5") F/W FW 56 Sto e se r - 103.5" Wingspan ounce cloth or two around the firewall, etc. P A Z M A N Y P L-4 - 105" Wingspan WACO/YKS-8 - 99" Wingspan as it appears to need it. These fiberglass F/W FW44J Stleglltz - 89.5" Wingspan RYAN S-C - 112" Wingspan doublers w ill also be tapered in planform to DOUGLAS A1H Skyralder' - (120") T -2 8 B - 102" Wingspan "fan out" the load and strength gradually SHOESTRING - 95" Wingspan S T E V E N S A K R O N - 100" Wingspan F8F HELLCAT - 98 Wingspan WATERMAN ARROWBILE - 92 Span and efficiently. General rule; Add weight B E R L IN G E R /JO Y C E O J-2 - 102" Span B E B E JO D E L D9 - 102" Wingspan only where you need more strength, not all EASTBOURNE MONOPLANE -112" DYKE DELTA - 88" Wingspan over the part. Another neat thing about this Plans are mailed by air; rolled in a heavy-duty lube P40, T28B. Skyraider. Helical, Stevens Akro, 0J-2, type of design and construction is that it is Dyke Delta and Eastbourne are $33.00. All others are $24.00. Please add $5.00 lor postage and handling easy to add more strength later, if you built California residents add 7% sales tax. Oversea orders add $12.00 for air postage it too light. When you get a part finished, Catalogs: Best of Scale and Two British. $9.00. flex it, heft it, and think about what loads BOB HOLMAN PLANS Box 741-M8. San Bernardino, California 92402 (714) 885-3959 w ill be imposed upon it. If it now seems too weak for its job, add a little more glass and epoxy. Remember that it is easy to strengthen but very difficult to remove unnecessary weight, so build light to start with. major decals Over 750 To Select From My tail feathers are going to be one layer A 7 1/4 Scale (18 Sheets) A .60 Size (38 Sheets) of .6 -ounce glass on 1/4-inch foam cores. If A .40 Size (38 Sheets) they are too flexible when they are cured, A Propeller Decals W.T. only (6 Sheets-3 sizes on ea.) I'll add diamond patches of glass. A Kill Markings W.T. only (6 Sheets) A Nomenclature Markings The weave direction of the fiberglass w ill (3 Sizes· 12 Sheets) in Black or White copy affect the strength of a part somewhat, but A Letters and Numbers (1/4'.3/8,-1/2,-5/8"-3/4"-7/8,,-1 "2 ,,-3 ,-4,,-4-13/16” I'm not worrying about it. I cut pieces of in 10 Colors. See color chart.) cloth so the force will be with the "grain" A Flags (American. United Kingdom and Confederate) A Stars in 10 Colors (9 Sizes plus one Sheet of when it is convenient, but I estimate that the Assorted Sizes) strength w ill be reduced only about 2 0 per A Trim Sheets (5" * 26" in 10 Colors, see color chart) DECALS cent if the cloth is on the bias, and that is PRESSURE SENSITIVE · WATER TRANSFER w ithin my range of ignorance as to.strength Authentic model insignias (pressure sensitive requirements. or water transfer) for 1/4 scale. .40 and .60 major decals FOAMS size propeller decals. World War II kill mark· ings. stars, flags, letters, numbers and trim Now that we have our foam cores all s h e e ts . FUEL PROOF TESTED 12% fiberglassed, let's go back and design and NORTHEAST SCREEN CRAPHICS 21 FISHER AVE . EAST L0NGMEA00W MA 01028 TEl «13 5254110 build the foam cores. Okay, so I'm a canard (bass-ackwards). First, the foam itself. The plastic foam best known to modelers is the strength-to-weight ratio composite sand It isn't very easy to taper sheet balsa or white polystyrene expanded-bead foam wich. If not, make the foam core thicker thin plywood, so most of our sheeted foam with a density of approximately 1 . 0 pounds and/or put more fiberglass on the outside to wings have been as strong at the tips as at per cubic foot. We have used that almost ex get the required strength. the center, but our foam and fiberglass clusively for wing cores because it is light The strength needed in a wing can be cal wings can very easily be built with de enough that we can leave the entire volume culated (but most of us modelers don't creased strength and weight near the tips. of the wing full of foam without the wing bother). The strength needed in most other Fiberglass the wing or wing halves all over being excessively heavy. Sometimes a few model parts is pretty hard to determine, with glass of a weight just strong enough of us put lightening holes in various config since the largest loads are apt to be indeter near the tips, then add more glass as re urations in white-foam wing cores, but the minate and variable things like landing quired inboard of the tips. But not that the weight saving frequently isn't worth the ef shocks or even transportation and handling bending moment doesn't decrease in steps fort. The beaded foam is the lightest foam abuse. Also, at this early stage in learning to as we move out on the wing; it is a smooth commonly available, but it does not have use foam and fiberglass for model struc decline, so we w ill have the best strength- the best strength-to-weight ratio. Further tures, we don't really know much about to-weight ratio if we taper the structural more, it is disappointingly flexible, spongy, how strong a given design w ill be in terms strength smoothly too, instead of putting or whatever. An engineer would say it has a of formal engineering numbers, so to heck additional glass on in steps. To do this, we low modulus of elasticity. Because of this with them, let's wing it. can use diamond-shaped pieces of glass sponginess it doesn't support fiberglass as Back to the wing. My gut feeling is that cloth for reinforcing, instead of constant- well as we would like. We really need a the single layer of 1.5-ounce glass that I'm width girdles. This is illustrated in Figure 1. more rigid foam for our cores. going to epoxy onto the white foam core of The long triangular arrows of cloth point The best answer most of us playing in this the wing for the six- or seven-pound plane ing at the wing tips w ill reduce the strength development have found is extruded poly I'm now building is going to be plenty, ex and weight gradually, and it is very easy to styrene "blue" foam. This is Dow Chemi cept near the center of the wing. Many of us do. Maybe we use one diamond patch of 6 - cal's Styrofoam SM type. This blue foam have, for years, used a wrap or two of fiber ounce cloth, or maybe use two or three runs about 2.5 Ibs./cu. ft. but it is much glass cloth to join the two halves of sheeted stacked patches of 1.5-ounce cloth of differ stronger and more rigid than the white foam wings at the center. Whether or not ent lengths and different taper. Make sure beaded foam. The Dow literature rates SM we have a center joint in the wing, we need you center the patch tips over the thickest blue foam at 25 psi compressive strength. extra strength there because the bending part of the airfoil, since the deepest beam They also show other blue Styrofoams up to moment is highest in the center. The wing has the most strength for its weight. The 115 psi in compression! These could be ex bending moment decreases almost uni neat thing is that the gloss cloth is so thin cellent for modeling if they aren't too heavy. formly from maximum in the center to zero that we can readily fill and sand the edges I w ill let you know after I have checked at the wing tips, so a built-up wing w ill have where our patches terminate for a smooooth them out. SM blue foam is available in better strength-to-weight ratio if the spars wing, fuselage, or whatever. The concept of "planks" 16, 24, and 48 inches wide, 8 feet are tapered; thick in the center and thin at tailoring the strength of composite struc long, and 1 to 4 inches thick. You can buy it the tips. The same applies to composite tures to the need, by adding additional from most companies that sell insulation. wings. layers of glass locally, applies to all parts of Look in your yellow pages. I paid $25 for a 86 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER / V \.Φ·! 1 1 / v * "■ vji| i E l., , * J~9[H * 9 w 1 τ i o r i o l jpisszrr·^ | ν Aj ^_/* - THE TWELFTH ANNUAL MODEL SPORT & HOBBY SHOW INDUSTRY MEMBERS ONLY - FRIDAY, JAN. 13, 1989, 10 a.m.-5 p.m. GENERAL PUBLIC - SATURDAY, JANUARY 14, 1989, 10 a.m. - 6 p.m. GENERAL PUBLIC - SUNDAY, JANUARY 15, 1989, 10 a.m. - 5 p.m. Pasadena C enter, Pasadena, C alif HOME OF THE FAMOUS ROSE PARAOE & ROSE BOWL 300 East Green Street (Comer of Green & Marengo) Pasadena, CA 91101 SEE THE LATEST PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF: • MODEL AIRCRAFT · MODEL ENGINES · GIANT RAFFLE · • MODEL BOATS · RADIO CONTROL SYSTEMS · SWAP SHOP · ^ • MODEL CARS · MODELING ACCESSORIES ▼ e BOAT POND · ^ pC r c T W W /it 9 w { f t CT WWΙΑ/fC TW 4/ ADMISSION · CAR Adults TRACK S5.00. under ·13 $3.00. under 6 free, if w ith an adult. STATIC DISPLAY COMPETITION IN MANY CATEGORIES SEE INDOOR R/C AIRCRAFT. BLIMP. BALLOON. CAR. AND BOAT DEMONSTRATIONS c INTERNATIONAL MODELER SHOW OFFICE: P O. Box 10127, Cojta Mesa, CA 92627 Ph: (714 ) 548-4700 ] templates. FIBERGLASS PARTS HOW MUCH FOAM? How much wall thickness should you de OVER 237 COWLS FOR KIT OR cide to use? Good question, but not an easy one. Don't ask me. How should I know? SCRATCH BUILT MODELS. ALSO When we have a lot more experience with OVER 34 ROUND COWLS foam and fiberglass structures, we w ill be RANGING FROM 4” to 14%" DIA. better able to judge how thick the foam & 55 DIFF. SIZE & SHAPE WHEEL needs to be for each different part of an air PANTS. plane. We know we can play games with W e custom make parts and core thickness vs. fiberglass thickness, how Peerless Model Airplane Co.'s 1936 vacuum form canopies. ever. That is, if we made the core much CORBEN SUPER ACE Please send $1.00 for complete list beefier than it really needs to be, we could 1/6 Scale · Light Weight for .05 Elec get back some "lightness" by using less 3 Channel Radio or 0.10 lo 0.15 2 Cycle Engine T&D FIBERGLASS SPECIALTIES glass than we would otherwise use. Like 5 4 " S p a n p |t C u | , nd Machin, C u , p , rt, $ 3 9 . 9 5 30925 BLOCK, DEPT. 6. GARDEN CITY, Ml 48135 PHONE (313) 421-6358 wise, if the core turns out too thin, use more S,nd S A S E For Broctiur, - Add $3.00 for S and H glass. C.O.O. Add 12.00. Calif. R at. Add 8% Taa BRAZED & HEATTREATEO WIRE GEARS & CABANES These tradeoffs are useful for recovering Maalar Card * Vlaa (918) 98S-3S89 Sat. 8 Sun PHONE (313) 261-9064 Pharla M odal· P.O. Boa 804 Folaom. CA 95830 from unwise decisions, but their use doesn't produce completely optimum structures in fuselage core, for instance, may be built up terms of strength-to-weight ratios. For every 2-foot by 8 -foot by 4-inch plank last year. of several easy-to-cut sections. composite structure, there is an optimum That is making a lot of cores, and is much The "tail-boom" section of the fuselage core-thickness-to-skin-thickness ratio. cheaper than balsa. aft of the wing can be wire cut outside and What that optimum ratio is we can only FOAM CUTTING also hollowed out very easily with the hot guess at for now. Among other things, it de Blue foam cuts fine with a hot wire, but at wire, just use a hollow or ring-type tem pends on the stiffness and strength of the a slightly higher temperature than beaded plate on each end of the foam block. Leave foam we are using compared to that of the foam. Because it is more rigid than beaded the templates on after cutting the outside, fiberglass or other skin we have. For blue foam, it can be carved and sanded with and drill a hole inside of one template foam and epoxy/fiberglass, my SWAG much less difficulty. Both blue and white through the length of the part and out (Scientific Wild-Assed Guess) is that the foams are basically polystyrene, so they are through the other template. Now thread the weight of the core should approximately both dissolved by the same things, includ wire through the hole, reattach and tension equal the weight of the skin. On the ing polyester resin and cyanoacrylate glue. the wire in the bow, and cut to the inside of fuselage I am now building, the blue foam I find that cores for most parts can be cut the templates. Since most fuselages are ta is 2 / 1 0 inch thick, and it is covered with one mostly or entirely by the wire cutter, but pered, the "core of the core" will drop out layer of 1.5-ounce glass, except where I sometimes it takes several steps and a little neatly, leaving a completely hollow section think more strength is needed. If that guess ingenuity. It is very easy to glue foam parts with whatever wall thickness you decided results in disaster, I w ill admit my ignorance together, using epoxy or white glue, so the to make it when you designed the to you later. ARF fliers must lead a dull life. 88 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER Advanced construction methods give the O.S. Ryan the same durability and flying stability as the original full-sized aircraft. S im p ly the B e s t A R F , o r I t W o u ld n ’t B e O . S. With over half a century of experience at attach the tail feathers, and then install the producing the finest R/C aircraft engines avail radio, pushrods, cowl, and landing gear. All able, O.S. has tackled a new goal: developing major accessories except wheels are included. an ARF airplane that meets their uncompro mising high standards. Drawing upon decades Classic O.S. performance. of expertise in model aviation and working closely with industry experts, O.S. has de Historically, the Ryan name is as symbolic veloped an ARF that is, quite simply, the best of flying perfection as the name of O.S. is for in every respect - the new O.S. Ryan. power. A popular sport trainer in the 1930s, the Ryan earned very high marks for its flight performance. Combining O.S. model tech Advanced construction. nology with Ryan tradition has resulted in a No other pilot at the field will be flying a 58” span low wing that flies smooth and plane quite like the Ryan. It displays the most steady, just like the the full-size Ryan, and is advanced ready-to-fly construction techniques capable of full 4-channel aerobatic perfor available. A special four-layered covering mance. process gives its built-up balsa wing a strong, Making the most of the flight-ready Ryan tight, and fuel-proof finish. No covering, design is the included and installed O.S. .40 painting, or sanding is required. The process FP engine - an outstanding mid-size power- yields exceptionally brilliant color that resists plant that provides high output, longevity, O .S . EN G IN ES fading, trim that is absolutely outstanding, easy maintenance, and reliability. DISTRIBUTED TO LEADING RETAILERS and the stunning looks of a superbly hand Everything that you want in an ARF, from NATIONWIDE EXCLUSIVELY THROUGH crafted kit. looks to performance, you'll find in the new The O.S. Ryan comes 90% complete out of O.S. Ryan. O.S. has combined the best of ^ G R E t f R A N R the box. Practiced fliers with little time to technology and tradition to achieve its latest build will appreciate the steps O.S. has taken goal - bringing you a totally satisfying flying to make assembly fast and easy. No special experience. After all, if it weren’t the very tools are required. You simply join the wings, best, it wouldn't be O.S. <01988. Hobbko. Inc. ANY WAY YOU think when trouble arises. The plane is con USE THEM structed of high-quality balsa, w ith veneer- ADDS UP TO BETTER covered wings, and pre-hinged surfaces PERFORMANCE using Robart steel pin hinges. The Dolphin comes completely pre-covered with Solar- film, so you can make repairs easily, or add NYROD’ THE ORIGINAL ^WrviMr PUSH ROD whatever decoration you wish. All neces COMPLETE WITH ALL REQUIRED METAL ______sary hardware, wheels, gas tank, push rods, F IT T IN G S ------and engine mount come with the Dolphin. IDEALLY SUITED FOR ANY PUSH ROD ACTION A four-channel radio is needed to fly this RUDDERS. ELEVATORS. AILERONS. THROTTLE HARDWARE INCLUDED: 55-inch span beauty, along with a .25 to .40 CONTROL. BOATS. SEA PLANES YOUR 1 -4" NYRODaptw »s i* * cu. in. engine. Look for it at your hobby IMAGINATION 1 - T Rod with 2-56 Threaded end $1.79 34- LONG. ASSEMBLED LENGTH C a tN Y R O O shop now. ♦ * * SU-PR-UNE PROOUCTS, INC. New from Great Planes is this 44-inch 18800 State Rout·, 47 E Sidney, Ohio 45365 span Electrostreak, an electric-powered Ptv (513)4884721 model that comes with a Goldfire 550 mo tor and matched 7x6 nylon prop for superb performance. The kit comes with precut turn your printer Into an airfoil plotter with.... balsa and ply parts for easy assembly. Ad vanced fliers w ill appreciate this model, as FOILED AGAIN!! aerobatic maneuvers are easily attainable with a four-channel radio system. Look for it at your nearest Great Planes Hobby dealer. • PLOT AIRFOILS IN ANY CHORD TO 24 INCHES* • MODIFY THICKNESS, CAMBER, TRAILING EDGE • PLOT SKIN THICKNESS FOR SHEETED WINGS Fan Fly...... Continued from page 14 • ENTER DATA EASILY WITH BUILT-IN EDITOR • EASY TO USE, MENU-DRIVEN OPERATION R/C Aircraft. • INCLUDES AN 18-PAGE ILLUSTRATED MANUAL • IBM vv ra lo n o n ly One of the most interesting scale models at the Fan Fly was a Northrop X-4 Bantam CQQ QC CA roaldonia add ( \ tat designed and flown by Harry Wood, of Ovaraaaa ordara: bank draft for USSSO Long Beach, California. This tailless jet Require· IBM - compatible or Apple-compatible computer model exhibited superb stability. In fact, and dot-matrla printer. Pieaee apeclfy computer and Wood's model appeared to fly better than printer type alien ordering. the full-sized X-4. It is always a pleasure to CYGNET Software° watch such a rare model perform. 24843 Del Prado #141 Dana Point CA 92629 Yellow Aircraft, Suite 201, 3040 Palstan Dick Sarpolus Road, Mississauga, Ontario, Canada, switched to (416)273-6757, was represented by Bill Harris and Dennis Crooks. Bill flew an A-4 Micafilm because VINTAGE R-C PLANS Skyhawk and F-15 Eagle. The Yellow Aircraft As he said, “ it was easy to apply, very F-15 is slightly smaller than the Byron light, and very strong.” Dick wrote us model; however, it is a perfect size for twin saying “ I thought the lack of adhesive Dynamax fans. At 22 pounds, this model would be a problem, but it was simple.” performs with all the authority of a full- He used Pearly White & Red Micafilm sized Eagle. The speed envelope of this 9 f t . w in g s p a n model is truly exceptional. The Yellow on the Robin Hood. But for the C /L ALL RIBS β FULL FORMERS SHOWN ON PLANS/ / aerobatic, he used 3/4 ounce clear PLASTIC ENG.COWLS $ I 0-90 PR group plans to release this design as a kit in Micafilm and painted it with dope. “ I’ll CLEAR GUN BLISTERS $ 7.60 PR. the future. Dennis Crooks flew a large Lock heed SR-71 Blackbird and a Grumman F-14 be switching to Micafilm for most 4 LARGE PLAN SHEETS —* * Plans $ 1 8 . 9 5 Tomcat. The Tomcat is, w ithout a doubt, the projects” , he said. “Keep up the 6 f t . WING SPAN MODEL PBY-5A most sophisticated scale jet that I have ever good work.” ENGINE COWLS $7.50 PR. PlanS $14 95 GUN BLISTERS $5.50 PR. aDp $ 3.00 POSTAGE seen. Increased in size to 1/9 scale from the CATALOG-OVER 50 PLANS $1.00 DEALERS WRITE earlier 1 / 1 0 scale examples that flew in C 0VE R ITE Canada last year, this design approaches 420 Babylon Road, Horsham, PA 19044 USA WORLD 0 WIDE perfection. The Tomcat features a complex SID MORGAN set of rotating retractable main landing 13157 O R M O N D ,BELLEVILLE, MICH,48111 u.s.A. gear, a variable geometric sweeping wing, They always know that the model is going and a precise control system that directs the to fly and not fall apart in the air. Live dan making a female mold, for only one or a few model equally well in all flight regimes. gerously; it is a lot more exciting! parts. The Tomcat uses spoilers for roll control My Jim Dandy word processor tells me Good designs come by design. · when the wing is forward. However, when that I have written 2881 words to this point, the wing sweeps aft, the spoilers begin to and Bill is going to take away my Christmas Counter...... Continued from page 70 align with the airflow loosing their roll ef bonus if I don't stop. One last thing: I re fectiveness. At some point the stabilizers, mind you of the useful trick of putting on rocket hobby shop. which are used primarily for pitch, work enough glass so the part is strong enough * * * differentially to provide the roll control. without the foam, then dissolve out the The Dolphin Super from Cambridge Dennis flew the Tomcat three times during foam with common paint thinner (it is Model Aircraft is a high-wing aileron trainer the weekend. During each flight he exer slower, but lacquer thinner or acetone may that is one step above an ARF—it is called cised the wing sweep frequently and soften the epoxy/glass). Glass-shell only or an RRF (really ready-to-fly). The Dolphin is reliably. full monocoque parts are handy for such said to be extremely stable w hile at the The Tomcat is a perfect example of what things as cowls, and the foam mandrel ap same time highly maneuverable. The can be achieved with current radios, jet pro proach to making them is a lot easier than model flies slowly, giving the novice time to pulsion systems, and airframe design. Bob 90 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER It’s elem entary w ith the Professor. Go to school with the Professor, is as close as the PROFESSOR SPECIFICATIONS Length 35.04' (890mm) the radio control trainer that makes schoolyard. Wingspan 48.82* (1240mm) electric flying easier than ever. Futaba and Area 4 4 6 .5 sq. in Weight ur/rec. »ystem) 39 ox. Extremely stable design and the Pro Motor RS540SH w/3:l reduction gearbox fessor show you how Recommended system Futaba 4NBL/MCR simple it can be. REQ U IRES: 7.2v/1200mAH NiCd battery pack and charger, 2-4 Channel radio control system Advanced, lightweight mate (electronic speed control optional) Futaba MCR-4A Integrated MOSFET speed control/ rials are used for the fuselage for receiver (Not included) required for optimum perfor mance. Specifications: 4 Channel: 1.5 oz. (excluding exceptional strength and rigidity. switch and connectorsI: 1.24" x 2.92' x 0.63" BEC Voltage regulator. And built-up, pre-covered wing, Electrifying fun for the more advanced tail and stabilizer eliminate the pilot. Aerobatic Hirobo/Futaba Chipmunk need for special assembly iAvailable soonl. skills. Simply join the wing halves, attach stabilizer, The complete Professor kit comes out of tail and pre-installed link the box ready to assemble. ages. Mount the propeller ARF assembly are just a few of to the gearbox of the powerful the features that make the Pro Mabuchi RS540SH motor, install fessor ideal for novice flyers. radio and batteries and you’re Futaba Corporation of America Clean, quiet flying excitement ready for takeoff. 555 West Victoria Street Compton. CA 90220 modeling. It seems hard to imagine that fur CANOPES a SHADES ther progress is possible. But next year w ill offer, I am sure, quieter propulsion systems, JED'S SHADE CANOPIES lighter airframes, more powerful and reliable engines, and even more exotic designs. · £>43 S. Brook hurst Ave. Fullerton, CA 92633 Electronics. — Continued from page 45 (714) 773-9509 ground is necessary only when long servo » i C « leads, 12 inches or longer, are to be used. It should be installed on all channels to 3 S TYLES which such leads are to be attached. IC-2 TOO HOT ?! Prices channel output numbers are as follows: from FLAT ROOF PEAK 92 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER ARISTO CRAFT/POLK'S MODEL CRAFT HOBBIES A 'RI&T.BSBH ’A'FjTj State-Of-The-Art Products at Sensible Prices! ARISTO-CAT A.R.F B 3 t A.R.F.. an balsa, covend and rsady tar radio tasSailattoo. Arista-Cat .25 Shoulder Wing ARI0100 $ 94.95 ARI0102 S249.95 .25 Engine; 50" Wingspan ARI0108 $ 84.95 Aristo-Cat .25 Low Wing ARI0101 $ 94.95 .45 Engine; 56" Wingspan — ARI0109 $139.95------Aristo-Cat .40 Shoulder Wino ------ARI0140 $129.95 - CHALLENGER 720 7 dournot FMI 4 CHANNEL | DIGITAL PROPORTIONAL RADIO AS R/C AIRPLANE GAS ENGINE n /M ffle r 2 high torque servos, battery box. re- cuivuc switch harness. F.C.C. ap proved Dry system Narrow band. Sarvo Ravnrsinq. Dual Rite Miung AM Rejection and 3rd order modulation 72MGHZ ARI4000 reduction. Motel rttn Open $77.95 Gimbaii. Nooi 72 3 Svrvos 75 MGHZ ARI4000-75 $77.95 ARI0720 w/Nicads C ·' ! L> and Charger ARI0720+ $169.95 Of ARI0153 $89.95 HOT SHOT HAND FUEL PUMP LOCKING GLO FROG CUP SET .25 R/C AIRPLANE GAS ENGINE w/Muttler ARISTO BIG DADDY STARTER Tit· (attest lilt machine we've come S«ure grip design resists engine vibra .28 R/C HELICOPTER GAS ENGINE w/Muttler HIGH TORQUE - 50 LB. ON 12V BATTERY κ π » $ at a reck bottom price! tion. quick release 1 YEAH GUARANTEE ARI0151 $68.75 ARI0152 $68.75 ARI0150 $62.50 1 0 Short Set: ARI04302 $7.95 ARI0154 $68.75 ^ ^ A R I0 5 0 0 $51.95 ARI02090 $12.95 Long Set; ARI04303 $8.50 ier S tortm Donut tar Big D otty Locking Set ARI04301 $4.95 .28 R/C AIRPLANE GAS ENGINE w/Mutfler ARI0503 $3.95 (EAT SEALING IRON POLYTEX a POLYFILM COHERING Μ ΑΤΙ. HEAT GUN 12V 12 AMP WET SORT MOTORCYCLE BATTERY onstant heat thru Ihnrmoknob" control For power starts at any engine sue. 7 Η Ί SW* > 2 V . Contours better, sticks better. • Wide nozzle Included wipe dean" long Ills tenon glides over Fuel resistant. Red. blue. • Adjustable air Intake ARI1212 $24.95 blKk. orange, white, • For fabric or green, antique yellow plastic Specify color. ARI0510t. r $18.95 POLYTEX 2 Meter Roll ARI5100 $ 9.95 POLYTEX 5 Meter Roll ARI5120 $24.95 POWER/PWS GEL CELL YoittcamootSOooforoNmm POLYFILM 2 Meter Roll ARI5200 $ 8.95 ARI0511 $1 12v 6 amp (δ’/ο’ x 3Vs" x 2% ’ | ARI1201 $29.95 XRI0510S $4.95 POLYFILM 5 Meter Roll ARI5220 $22.50 6« 4 amo <2¥a" x 4" x IVa") ARI1200 $14.95 NICAD CONVERSION 12V FIELD SOLDERING IRON POWER PANEL WITH AUTO ADJUST DRIVER PACK For outdoor repairs. 30 waft wfclgaretta lighter Auto adjust output lot any attKhment. gtoplug With dual charger plus Nicads. For Aristo radio Powered by any type ol sealed systems, transmitter and receiver " wot 12v battery Three power outputs 1) t 2v lot For 2S0 w/C harper ARI0314 $29.95 •nglne starter 2) 6v or t2v For 260 w/Charper ARI0316 $29.95 selectable tor tuel pump For 7 Ch w/Charget ARI0309 $39.95 3) T.Sv lor glo plug For Pistol wfCharger ARI0312 $39.95 For 2000 and 4000 110v SOLDERING IRON ARI2080 $27.50 wICharger ARI0313 $39.95 Nlcad Charger alone ARI0310 $ 8.00 30 watt lor Hobbyist use H i m ARI8131 $4.50 To O rd e r . . . Call TOLL-FREE 1-800-225-POLK. IVc accept Visa. MasterCard and American Express. Include card number and expiration date with order. Or send check or money order to: Aristo-Craft / Folk's Model Craft Hob bies. Room 24 . 346 Bergen Ave., Jersey City. INJ 07304. NJ and NY residents please in clude state sales tax. Please allow 2-3 weeks for OPS insured delivery. inch center pin and a .250 outer shell that should carry a much higher current than ENJOY A YEAR the phone plugs. The jacks are also availa ble in a switching configuration, and there I N S C A L E are no built-in short circuits either during L : J insertion or removal. 1 9 8 9 The power plugs fare a lot better in all re i 1 1 spects. They too are often found on home RC SCALE CALENDAR 1 1 electronics, probably most often seen on the end of AC adapters for battery-powered FEATURING RC AIRCRAFT equipment. In R/C equipment, we see them 12 FULL COLOR PHOTOS on the end of transmitter chargers on D C ■ V * Futaba equipment, among others. Switch- $6 EA. — Check or M.O. craft supplies two such connectors, with .08 ' A V I A T I O N or .10-inch internal plugs. Both are rated at 5A, which is an acceptable figure for most OuiWDt/ Discount* P.O. Box 98. Big Rock, IL 60511 CluD promotional calendars now available (312) 556-3729 R/C applications including glow plug con nections. A switching jack is available, and as in the case of the RCA plus, there are no built-in short circuits. This socket/plug is ASSOCIATES PRES IM TS T R E recommended above all others. STARTER BATTERIES. There is a wide variety of all of these 12 Dolts 4.0 Amp. hour plugs to be found in large electronic stores, B&P ASSOCIATES w ith differing mostly in plug bodies. In all cases, m ore then 25 years choose one with solder instead of screw or Experience In the Design, pressure connectors, solder them properly, Manufacturing, and with heat shrink insulation at all points, and Assembling of Nickel with a piece of larger diameter heat-shrink over the wires as they enter the plug body Cadmium cells and for further protection and longevity. What batteries, now presents ever connections you make, may they be the FINEST STARTER enjoyable and long-term ones! BATTERY FOR YOUR Referring again to my opening para STARTER, w ith C harger. graphs, after all this time you'd think I Just Charge It once, and would no longer get mail starting off with: it u»ill last the weekend for Starting your Plane. Also 2.0 and 7.0 Amp. Hr. Dear Elroy. Oh well! ELOY Marez—AMA 1995, NMPRA 22B! · HISS WED (Ϊ1ΠΣ8 Ρ„®. ffi®HI 22®35«) F° r r« n r nbreii!r|rtp -need* ’ (BDaie®, TTiS W ® 2 -2 fflS < ) «-on o r w rn e . Daydream Bipe Continued from page 23 With the laminates finished, you can go on • A quality 1 Vi meter to build up the stab and elevator as indi (59"). glider kit, com plete except for 1 roll of cated on the plan. Don't leave out the 1/8- covering and adhesives inch ply doubler at the center of the trailing CIMERO (CA & epoxy). edge! Be sure you understand how R-1 w ill (Hummingbird) • Coupled aileron/rudder, ele fit between the two center "ribs" of the stab. vator for those with some ex Don't forget the gussets. perienced^ S&H $3 Build the vertical tail and rudder in the • Rudder, elevator w/polyhedral wing for beginners-$36. S&H $3 same manner. Block sand all tail surfaces perfectly true after assembly, then round • Foam wing cores now • Either version of Chuperosa will provide easy relaxed fly have cut in spar notch ing on flat land or slopes for the beginner or the experienced the edges to a constant radius, remember es flyer ing that you are simulating a tube and fabric structure. Fine sand everything, make the Kit now includes illustrated manual. necessary holes for control horns and hinges, and clear the board for the wings. WINGS Basic Design-Russell A Shaw MODELS The upper wing is built flat on the board. Redesign, Plans-Leroy K Satterlee 2526 Washington. Dubuque.lA 52001 319/583-4830 Start work by laminating the tip and center section bows so you w ill have them ready to go when you need them, and avoid having the purpose intended, have extremely poor Equally important is another poor feature to pull the partially completed wing off the qualities for our applications. For one thing, of these plugs, though it must be mentioned board to do the laminating. Lay out the bot they ail have rather high contact resis that it does not affect their original intent to tom leading and trailing edge sheet, the tances, low contact pressures, and very low connect the headphones into your "Walk capstrips, and all the center section sheet in current ratings. A company named Switch- man." That being that as the plug is inserted place and glue the edges as appropriate. craft, one of the largest US suppliers of into the socket, there is a momentary but Note that the forward portion of the leading these devices, rates them as follows: Stan complete short across the circuit! This edge will have to be shimmed up to match dard (.250-inch diameter), 1A; Miniature means that if you are making a battery con the curve of the ribs. You may want to mea (.173-inch and .141-inch diameter), .250A; nection, you actually apply a dead short sure off some reference points on the plan and Subminiature (.087-inch diameter) at across it. If you are slow in inserting the outside the center section structure, or per -125A. These are very low current ratings, plug, or if vibration causes it to partially un haps make a copy of the plan, so you can lo especially for glow plug connectors where plug, the sustained short w ill surely burn up cate the center spars and ribs where the these plugs are often seen. All of the un things. Not good at all! plan is covered by the bottom 3/32-inch desirable features mentioned all contribute The RCA audio plugs are somewhat a bet sheet. Assemble all the lower 3/16-inch to an important factor: reduced voltage at ter choice in all respects. I could not find a square spars in position, followed by all the the glow plug. current rating for them, but they have a .125- W T ribs. Add the leading edge. Fit and glue 94 WHEN CONTACTING ADVERTISERS, TELL ΈΜ MODEL BUILDER SENT YOU! MODEL BUILDER Unmatched excellence in Design and Workmanship THE DU-BRO KWIK KLIP The Ultimate Glo-Plug igniter for planes, boats, cars and helicopters. Powered by your Sub-C rechargeable nicad battery, the spring loaded Kwik Klip III locks onto the Glo Plug and provides a cons tant power source until you release it from its duty. For your convenience, the Kwik Klip III is available in two lengths; 1" for easily accessible engines and 3%" XL (Extra Long) for models with concealed or hard to reach engines, and provides current to stan dard and 4 cycle glo plugs. A 125 mA battery charger is optional and is designed to charge your battery while inside the Kwik Klip III. It’s safe, dependable and built to last a lifetime. ‘‘What More Could You Ask For... Gentlemen, Start Your Engines!” DU-BRO PRODUCTS, INC · 480 BONNER ROAD · WAUCONDA, IL 60084 assemblies, being certain that they are in stalled on the same centerline as the aileron MODELS hinges. When these are in place, you can go ahead and finish up the top surface sheet F-84 10 Model Kits ing and capstripping. Build the ailerons F-86 S14.95 over the plan, trimming and fitting to match F-100 the wing panels. Now carve and sand every F-104 thing to finished shape, giving the entire M ig 15 a n d 5 m ore structure an extra pass with the fine sanding all 1/72 scale block when you have finished. D rill the leading edge and fit the 1/4-inch dowels as indicated. Locate and test-fit the aileron hinges. Make up and install the interplane S e n d $ 1 4 3 5 plus $330 shipping & handling strut tabs as you did with the upper wing. io Aerodyne Industries FUSELAGE .. .Airplane o ffe r... As they say, this one is built up just like P.O. Box 2267 the good οΓ rubber-powered scale models, Orcutt. CA 93455 allow 6-8 weeks delivery . . . sorry. . . no COD'S only bigger. Start by laying out two identical side frames using hard 1/4-inch square with the upper wing, and follow with the balsa or, as I prefer, spruce. Note that the the upper spars, followed by all ply dou lower 3/16-inch square spars, all WB ribs, wing saddle pieces are part of the basic side blers and spar webbing. Fit and glue the and the leading edges and then add the tips. frames; build the frames using 1/4-inch hardwood upper wing attachment blocks. If Fix one panel to the board and block the sheet saddle pieces, then add 1/ 2 -inch you fit, drill, and tap these accurately, you other up at a four-degree angle, trimming as "doublers" on the inside after the basic can install them predrilled and open up the necessary to get a proper fit between the fuselage structure is assembled. When the screw holes in the bottom sheet after re two WB-5 ribs. I would suggest that you cut frames are removed from the board, you moving the wing from the board. The alter out the lower spar doublers and joiners can add the 1/8-inch Lite Ply doublers at the native is to leave the top center sheet off un without adding the rib notches. Mark the nose, being careful to make both a left and til after the wing is off the board and to drill rib notches using the actual locations of the a right side. Make sure you leave room for and tap the blocks from the bottom. ribs in your wing and cut on these marks. In- the doublers to butt against the back side of The lower wing incorporates four stall the doublers and joiners making cer F-1. Now join the sides at F-2 and F-3. Add degrees total dihedral (two degrees per tain that the dihedral angle is maintained as the extra wing saddle material and then the panel), and is built flat as two separate specified. plywood wing mount. Join the side frames panels and joined before the top surface Add hard balsa filler blocks for the wing at F-1, taking extra care with alignment. sheeting is added. Lay out the bottom sur bolts to bear against at the center trailing Using the top plan view as a guide to align face sheet, capstrips, and trailing edges as edge. Make up and install the aileron horn ment, pull the sides together, and join with 96 MODEL BUIDLER SHELDON S HOBBIES POSI-CURE ™ CYANOACRYLATE SALE WE’VE GOT THE CURE We’ve got the cure whether you’re torn, ripped, shredded, frazzled, smashed, crushed, cracked, chipped, fractured, split, snapped and shattered or just a little bit stressed. 1 oz. Fast Cure 3-5 Sec...... $ 2 .4 9 2 oz. Fast Cure 3-5 Sec...... $ 3 .9 6 1 oz. Gap-Filling 10-25 Sec...... $ 2 .4 9 2 oz. Gap-Filling 1 0 -2 5 S ec...... $ 3 .9 6 If you are not satisfied with POSI-CURE please return the unused portion within 30 days for a full refund - No questions asked!) SHELDON’S HOBBIES ■ »' 2 135 Old Oakland Rd. · San Jose. California 9 5 13 1 ORDERS (800) 228-3237 SET ONLY (800) 822-1688 S' For Information Call: (408) 943-0872 SHIPPING - U P S. Surface Add $ 3 .9 5 . U P S. Air Add 10% Parcel Post Add 10%. Parcel Post Air Add 15%. CO.I) Add $ 2 .5 0 T ^ [ mastet charge] HOURS Mon & Fri: 9:30-7.30. Tue. Wed & Sat 9 :3 0 -5 :3 0 . Thurs: 9 :3 0 -9 :0 0 . Sun I 2 :0 0 -5 :0 0 L .1 1/4-inch square crossmembers top and bot each joint. tom at F-4, F-5, and F-6 , and at the tailpost; Add the doublers to F-1A and F-2 and drill JE T ENGINES note that the inner surfaces of the side them to accept the cabane struts. Make up frames w ill need to be beveled to yield an the cabanes. I'd suggest that you start with outside width of 3/8 inch to match the rud just the fore and aft vertical members. Jig up der leading edge. Temporarily fit the lower the fuselage on the board with the landing wing, marking and drilling the holes in F-2 gear hanging over the edge and level the for the leading edge dowels. Following this top longeron parallel to the surface. Lay out you can add all the top contour formers. a reference line at right angles to the Make up the landing gear, using hard fuselage centerline, in line with the upper solder on the joints. Fit the gear mounting wing trailing edge tips. Slip the separate ca JET-X 50, DYNA-JET, TURBONIQUE, P-38. VALVES, PLANS, AND BUILDERS SUPPLIES. blocks at F-1 and F-2. You might want to con bane struts in place, mount the upper wing SURPLUS GAS TURBINES. sider drilling and bushing these with metal with 10-32 screws, and start adjusting until DYNA-JET ENGINE...... $195.00 tube to reduce the possibility of the holes the lower surface of the wing rests at zero JET-X ENGINE KIT...... $22.50 JET BUILDERS NEWSLETTER...... $12/Yr wearing oversize. degrees incidence parallel to the top longe CURRENT COPY...... $1.00 In order to avoid extra complexity in as ron and the tips line up with the reference 25 PC. CATALOG...... $5.00 sembling the gear and subsequent finishing line. Now you can add the cabane di I DOYLEJET I operations on the nose, and to leave the bat- agonals, wrapping the joints carefully with I 4015 Sen Jacinto St. #404 D | HOUSTON. TEXAS 77004 (713) j tery/tank compartment free for a maximum wire. Temporarily glue several hard balsa of flexibility in equipment installation, I braces across the cabane assemblies, then split the landing gear assembly on the pro carefully remove the upper wing and take Now put the upper wing back on the air totype, eliminating the "crossover" portion the cabanes off the fuselage and solder the plane and recheck the entire assembly for of the front and rear legs. A little extra care joints. You can fair the cabanes using alignment. When both wings are in place taken in fitting the landing gear mounting spruce, basswood, or whatever once the and you are satisfied that they are on cor blocks below the lower longeron, between soldering is complete and you have rectly (and you have taken a break and F-1 and F-2, and reinforcement of the blocks rechecked alignment. relaxed!), go through thedrill again with the with tubing as just mentioned, created an Test-fit the lower wing in place. Block the horizontal tail, making sure that you have it assembly more than capable of handling fuselage up again and adjust the lower wing shimmed off the top longeron extension for the vertical and twisting loads imposed on mounting for one degree positive inci one degree positive incidence. Follow this the gear assembly. All horizontal loads on dence relative to the top longeron, as mea with the vertical tail, which has only to be the gears legs are handled by the "V " mem sured at the lower surface of the wing. With square to the stab. When you have checked ber between the legs. Over a year of flying the incidence set, square up the wing rela everything once again, go ahead and make has produced no signof strain on the instal tive to the fuselage centerline and drill the up the interplane struts. Note that the proto lation. If you feel more comfortable with a wing and wing mount for two 1/4 x 20 bolts. type flies well now without washout in one-piece gear, split the legs as mentioned You may want to consider using threaded either wing. When the flying surfaces are at the centerline and rejoin them after as inserts as an alternative to tapping and rein under control, mark and drill F-1 for the en sembly by soldering a tubing sleeve over forcing threads in the wing mount plate. gine mount. Using the Saito 65, my airplane JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 97 wing trailing edge. Add a 1/4 x 1/8-inch SAVE YOUR FIELD ! belly stringer from F-3 to the cross member Π at the F- 6 station; I relieved mine to allow it I Th# •SNUF-LER'* muffler Is a low cost, easy to Install, light weight. to fit progressively deeper over the belly I sound reducing muffler with no performance penalty. It Is the crossmembers so that it tapers smoothly answer to AM A muffler rule suggestions and saving flying fields. into the tailwheel mounting plate. Add the • Meets AMA muffler rule suggestions. two 1/4 x 1/8-inch fabric attachment strips • 3 to 10 decibels quieter than stock muffler. to the top center section of the horizontal • No power lose wtm possible 300-500 RPM Increase. tail; these should fair smoothly into the ver • improves engine tble — Gives better fuel economy. tical tail trailing edge and lie flush with the • Easily attached to moat .25*1.08 stock mufflers. outside of the top longeron at the front. In • Heat and corrosion resistant Black "E" coat finish. clude a small block of scrap at F- 6 to pro • No special adapters required. vide a continuous base for attachment of • Weighs 3.5 ozs. ^ the covering. The 1/4 x 1/8-inch strips on the SNUF-LER Fits· ASP. ENYA. FOX. HP. «VINE. K&B. OS MAX. stab are necessary to allow you to do a eRAT. MUFFLER ROYAL . YS and SUPER OGRE mufflers foi F*f*d'*9 faired fabric fillet with the covering. This is much easier than it sounds and looks spec “ SNUF-LER" mufflers for J’TEC IN-COWL mufflers 400 on KCIUOT·, tacular; the whole idea is to cover the area JT4AC M oinong O n o 3 05 JT-«01 Peru 2V-60oxiffl#o 24.es The •,SNUF-L£R·· Muffler can be used JT-eoiN 3/3 N*c. Tuong 300 between the top longeron and either side, JT-eoa For i l 75-108 j*TEC ίτχίΛ#τ» 24 OS on scale______ae-craft _ with JTEC IN-COWL JT-302N V,* N *o . TuO^O 3 50 the top center turtleback stringer, the verti -T-3C3N ν β Nm . Tuomg 5 00 JT-°? S iS S r iS R S iS J S i A clamo ■* usee IO Bon me JT-OOlE 3/8 « > o * 1.85 cal tail trailing edge, and the vertical tail •uuvKMoouMti muffler to the Dottom of the fuselage JT-8026 V,* £tx>» 2 23 “ “ “ It is connected to the JTEC muffler JT-8036 VS EH>ow 3.05 leading edge with one piece of material. with neoDrene tuDmg. For aopeararce saKe. t can be removed after flying, (Now you can see why you need the extra cxecw strips; without them the covering would = * » '» « · » no» Ο ν ο * » * · c» vo v/N > o o v tn o o OFCCO 0 « € C f fo» SETTS z y o r STAXF have no place to go at the base of the verti ■ο ΙΛ rrm^ooie |T«Cfr«n! C*·C» MO Wja MC a COO fcr a b o k i o u l w o 164 School St.. Oaly City. CA 94014 occeo'oa a o c S250 fa u*»S $200 fa COO. ora 6X a jo j m c catalog cal tail.) The trick to the whole thing is jo e t 'ox f a C o e i*uo*nt______(4151 756-3400 patience in stretching and attaching the covering. Believe me, it w ill work; this is the trimmed out comfortably using one degree 1/8 inch. I'd suggest spruce to resist bowing way many of the older biplanes and virtu each right and down thrust. If you use a sig under the tension of the covering. Fit the ally all classic lightplanes are covered. nificantly larger engine, you might want to filler blocks behind F-3A and sand them to When you are done being worried about add an additional half degree in each contour, noting that the top center blocks this coming test of your covering skills, add direction. extend rearward to provide a mounting sur the 3/32-inch sheet balsa inlays on either With the hard part done, you can finish face for the headrest. Add the side stringers. side of the fuselage below the tail to serve as up the fuselage structure. Add the tailwheel These extend forward to F-2 and are re control rod exit fairings. mounting plate and fill in the contours of lieved to accept the side sheeting. Add a 1/4 Drill the requisite holes to route your fuel the nose with the F-1F and F-2F formers. Fit x 1/ 8 -inch strip of balsa across the bottom of system plumbing and test-fit the tank. De the turtledeck stringers, noting that the top F-3, tapering it to fair into the lower longe pending on the particular arrangement of stringer is 1/4 inch sq.; all the rest are 1/4 x rons so it matches the contour of the lower your airplane. I'd suggest either a floor or Bring your latest completely finished models to display and enter the competition for exciting awards. R/C radios w ill be awarded to the first, second and third place winners in the following classes: NON-MILITARY SPORT SCALE PLANE (AMA Rules) MILITARY SPORT SCALE PLANE (AMA Rules) PRECISION SCALE PLANE (AMA Rules) PATTERN PLANE SPORT MONO-PLANE (non-scale models only) SPORT BI-PLANE (non-scale models only) THIRTY-FIFTH ANNUAL OLD TIMER FREE FLIGHT R /C ASSIST R/C SAILPLANE (non-scale models only) (No Engines) RADIO CONTROL EXPOSITION HELICOPTER R /C CAR TOLEDO SPORTS ARENA COMPETITION BOAT MILITARY SCALE BOAT ONE MAIN STREET, TOLEDO, OHIO PLEASURE POWER BOAT WORKING VESSEL-UNARMED ADVANCED TICKETS may be ordered by sending a self- All models entered into competition w ill be judged for Best Finish, Best addressed stamped business size (4'/ex9'/2) envelope to: MonoKote. The Directors Award and the Best of Show, TICKETS. 38235 Castle, Romulus. Ml 48174. Come, join us and enjoy yourselves at, unquestionably, the world's All orders above 5 tickets must include extra postage. U.S. greatest radio control model show. orders must include a 25 cents, per order, handling charge. All "We will have our traditional Swap Shop and foreign orders must include 50 cents, per order, handling charge, but only need send an addressed envelope. We will Saturday Night Auction" provide the necessary postage.fxpzess Mail Orders Will Not Open to the public all three great days . . . Be Accepted! Include a check or money order in U.S. funds made payable to the "Weak Signals R/C Club." Ticket prices are: 54.00 per day APRIL 7, 8, 9, 1989 for adults and 51.00 per day for children, 12 and under. (Please FRIDAY 9 am to 6 pm specify number of each.) Deadline for ticket orders is March 31,1989. All sales are final SATURDAY 9 am to 6 pm and non-refundable. SUNDAY 9 am to 4:30 pm TICKETS ARE ALSO A VAILABLE A T THE DOOR. Exposition information is available by contacting Wayne presented by the Yeager, co-director, at the ticket address or by phone — (313) 941-6661. Weak Signals R/C Club, Toledo, Ohio 98 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER C.G. SUPER CHIPMUNK Span, 64," Length, 53” Wing Area, 688 square inches. Hying Weight. 6 to 8 pounds. For four to six channel radios and.45to.60two-cycle,or.60to.90 four-cycle engines. Kit includes formed cowling, wheel fairings and canopy. Optional operations: Flaps and retractable landing gear. Suggestions for smoke systems are included. Typical Goldberg. You know what that means. the Super Chipmunk would be a good bet cycle, and you'll have it all. Stable, sensible and depend as your first “low-winger”, you’re Plain and simple, or with all the able. And all you've got to do is fly absolutely right. bells and whistles, your big, light your new CG. Super Chipmunk straight The options you choose weight Chipmunk will come through and level for a few minutes and you’ll set the pace. with flying colors. discover that it is “Typical Goldberg". The kit and the value But it’s Goldberg with a difference. If you’re a more experienced flyer, The lust turn it loose, and this easy-to- Super Chipmunk’s well-designed flap and are “Typical Goldberg”, too. handle Sunday flyer will put on an retract options offer an added dimension If you liked our Anniversary Edition Cub, airshow with all the flash and flair of its of realism. you’re going to love the C.G. Super full-size cousin. And when it comes to power, Chipmunk. All the thrills a .45 to .51 two-cycle, or a .60 four Its beautifully formed molded parts, cycle are just right for solid sport flying. full color peel-off decals and complete without the chills. If high performance is your thing, bolt hardware package are the kind of deluxe Oh sure, you've heard that one before. in a .60 two-cycle, or an .80 to .90 four accessories you’d only expect to find in But here’s one model that’s really been kits costing a lot more. engineered to live up to the promise. So Plus you’ll find the same kind of while it delivers the kind of sparkling high-quality materials, precision cutting, aerobatic performance that’s sure to straight-forward construction planning keep the experts interested, the Super and superbly illustrated instructions Chipmunk’s super-stable low speed that have manners are something we can all made all of CARL GOLDBERG appreciate. our other kits MODELS INC. Fly it at a crawl, and it simply won’t so popular. quit. Bring it in a little nose-high, and Typical Goldberg? You bet. you’ll still have a solid feeling of control But with the Super Chipmunk, the all the way to a perfect touch-down. phrase takes on a whole new meaning. Fact is, if it’s beginning to sound like Excitement! The Super Chipmunk! From Carl Goldberg Models. FEATURING: Construction Articles Product Reviews Radio Control Yes, start my subscription Peanut Plans to Model Builder! Electric Flight □ New □ Renewal Old Timers Name_ Address City___ State__ □ $25.00 for one year (12 issues). Over $10.00 off newsstand prices. □ $47.00 for two years (24 issues). Over $23.00 off newsstand prices. M/C or Visa ft (Add 5%) ______Expiration Date Signature $38.00 lor one year (includes postage), outside U.S. including Mexico and Canada. MODEL For two years (24 issues) send $68.00. ALL PAYMENTS MUST BE IN U.S. FUNDS DRAWN ON A U.S. BANK BUILDER MODEL BUILDER 898 W. 16th St., Newport Beach, CA 92663 WORLD’S MOST COMPLETE MODEL AIRCRAFT PUBLICATION roof of 1/8-inch Lite Ply for the tank com ner. If you can find a metal pot to fit, or want horns to the control surfaces and do a trail partment to isolate the tank from the bat to mold a glass cowl, have at it. This is mounting of your radio system. I prefer to tery. When you have all the internal cutting where the "daydream" part of the project get everything cut to size and working be and fitting complete, go ahead and close up takes over; do what turns you on. If you fore beginning any covering or finishing in the nose by adding all the 3/32-inch balsa want rocker box fairing blisters, try what I order to avoid nasty surprises later when cowl sheet. This extends back over the bot came up with. I found an old metal spoon trying to make control rods and other goo tom of F-2, back to the curved outline of the proper size (small) and used it to dies fit where there isn't room. I used fiber shown on the plan on the fuselage sides, press female mold depressions in a smooth glass push-pull rods with 2-56 hardware on and back to a butt joint flush with the out block of non-oily potters' clay. I then mixed the prototype. side edge of F-3A. W hile you are at it, make up a batch of polyester resin with lots of ex The flying wire rigging on my airplane, as up the lower wing center section fairing. tra catalyst and poured fourteen spoon seen in the photos, is semi-functional but I built the cowl on my airplane in two sec shaped depressions full. (I had no trouble, not necessary. It is intended to carry a load tions; a fixed base or "dishpan" cowl and a but epoxy might be less critical to work should something in the primary structure removable portion, to replicate the appear with.) The cured resin "spoons" were fail, but the airframe is intended to fly safely ance of the full-scale airplanes after which pulled free of the clay, cleaned up, and without it. I made it up using ordinary the Daydream is patterned. You can build trimmed to fit closely against the cowl, hobby shop music wire, 2-56 threaded fit the entire cowl in one removable piece if where they became instant rocker box tings and clevises, and thin aluminum tabs you choose, at the expense of having it ap blisters! The cowl on my airplane is shaped to fit inside the strut ends or to bolt pear rather deep. If you go the route I did, mounted to three brackets cut from 1/4-inch in place as shown in the photos. If you are make and attach a 1/8-inch Lite Ply base ply; these are drilled for 4-40 screws which going to use the rigging, make it up now to cowl mounting ring and construct the base go through the rear edge of the cowl and avoid messing up your finish later. cowl "dishpan" to fit over it. I cut two rings into a blind nut on the inside of each My airplane is covered with Sig's Koverall of 1/4-inch balsa on the jigsaw, laminated bracket. The brackets are mounted to the (Dacron polyester) and finished with two them, relieved the rear edge 1/32 inch, and base cowl with sheet metal screws and coats of nitrate clear dope followed by K&B wrapped a cowl body of 1/32-inch ply cyano. Give each one a good shot of cyano epoxy primer and a Superpoxy color finish. around the balsa rings using a circle drawn after drilling, before the blind nut is in I went all-out for "show finish" (three colors on a sheet of paper as a pattern. Sand the stalled, and run the drill through it again, and a clear top coat) and came out at a gross leading edge of the laminated portion to a and you'll have a really tough, oil-proof weight of 9-1/2 pounds. This worked out to smooth, rounded section and give the en mounting system. something like a 24-oz. per sq. ft. wing tire assembly a covering of 3/4-ounce fiber Make up a headrest from light balsa, cut loading, and the airplane is very comfort glass attached with CA, or, if you prefer, re out the cockpit openings, and sand, sand, able flying at those numbers. It has, in fact, sin. If you want it to appear to be a sand everything in sight. Extra attention been loaded up to 1 0 -1 / 2 pounds and flown removable base cowl section, don't attach it paid to the sheeting on the nose and to the without problems. I suspect that a nice fin to the fuselage until after your finish is com stringered portions of the tail will pay big ish could be done using one of the pre plete. There is no reason for it actually to be dividends when you have the finished air colored dacron fabric coverings, trim removable. plane out in the bright sun for all the other striped, and given a clear finish for a signifi The main cowl is made in the same man guys at the fly-in to see! Fit the hinges and cant weight saving. Another super bet for a 100 MODEL BUILDER really lightweight finish would be dyed, clear doped silk. I have proven to my satis faction that a well done clear dope and silk JOHN POND finish is no heavier than the loudly touted “light" film coverings, and a whole heck of a lot stronger and longer lasting. Whatever Time Plan Service you choose, I strongly suggest that you cover the center section of both wings and The largest selection of plans in the world at the most the fuselage back to F-3 with 3/4-ounce reasonable prices. Each list $1.50 glass cloth. Done correctly, this process adds a few ounces at most, but imparts No. 19 OLD TIMER F/F GAS tremendous strength. I would not build an No. 19 OLD TIMER RUBBER/TOWLINE airplane without it. Now put the whole thing together. Set up No. 19 OLD TIMER FLYING SCALE A through K your balance and control throws as shown No. 19 OLD TIMER FLYING SCALE L through Z on the plan. I built in aileron differential New plans prices effective Jan. 1989 to Dec. 1989 (that is, the ailerons go up further than they go down). My airplane is rigged with about P.O.Box 90310 a two-to-one differential and exhibits no San Jose, Calif. 95109-3310 tendency to develop adverse yaw. You Phone (408) 292-3382 (Tues. or Fri.) could accomplish the same thing with a rudder-aileron coupler if your radio has one, or by coordinating the sticks the way AIR RACERS! we're supposed to know how to do. The built-in differential seems the neatest solu tion to me, since the problem never devel ops. You might want to increase the aileron throw, although the movement shown yields nice, scale-like maneuvers. The balance shown is at about 30-percent of the projected chord and results in docile han dling characteristics at low speed, yet gives a clean spin entry and a spin rate that w ill stand your hair on end. Move it back if you must, but experiment a little at a time. My flying is being done with the afore mentioned Saito 65 running on Red Max 15-percent nitro four-stroke fuel, which is all I have used for the past several years. I have recently started ordering my fuel mixed on a castor-oil base and feel that the ______slight extra cleanup effort that results is well 1/32 scale plastic model kits of Golden Age air justified by the extra margin of protection racers! Colorful, highly detailed miniatures. my engines get. The prop I have settled on is Send S3 for fully illustrated catalog of these and other kits and accessories. a Graupner 15-7 (yes, that much prop). The airplane w ill take off at under 3/4 throttle DEPT. MB and will do sequential big, hundred-foot- 181 PAWNEE ST. high loops without straining. I have read SAN MARCOS, that the Saito 65 likes to work best at CALIFORNIA 92069 moderate rpm on large props, and this setup seems to prove it. What's really neat is on beginning control line fliers will no that it is quiet! Control is by Airtronics in the doubt be reprinted in countless club news “H ig h -A m p ” Powerpole person of one of my ol' reliable Champion letters around the world. Modular “Silver Plated" Connector ship 7 systems. The whole point of my hav "The main magazines of interest to Aus Rated 30 Amps at 600 Vfl.C Electrical Resstance 250 Mcntfms Color Co-ortinaled (Red & Back Lexan Housng) ing set the airplane up this way is to fly it tralian CL modelers are those American like an old-time biplane, not some hot-dog ones with CL sections in them, and the Aus mosquito. Long, smooth takeoffs, with tralian Airborne and the (British) Aer- power added gradually, not jammed in, w ill omodeller magazine." Peter also notes that really make you look like you know what the Australian dollar is worth about 80.5 you’re doing. Learn to fly the airplane com cents U.S., and there are only one or two Only ccftilwd checks or money orders accepted Minimum order JIG00. for throe packages of 4 Poworpoles (1300 per oecfcage fortably at reduced power and to make main importers, making finding control ♦ *100 shipping and handling) CT residents add 7 5% sales U« Prices subject to change without notice smooth sweeping turns instead of jerky line equipment an expensive and occasion DEALER INQUIRIES INVITED. For further mtormahon and reversals at the far end of the field. Big ally difficult proposition. dealer prices send SASE and Business Card lo round loops with power reductions on the He concludes: "I will extend invitations SERM0S R/C down side w ill get you into the spirit of the to any modeler to visit us at CLAM should SNAP CONNECTORS thing, and a long, straight final approach you come over to Australia. It is cheaper for Cedar Comers Station followed by an old-time wheel landing, car you to visit us, so why don't you come?" Box 16787. StamlonlCT 06905 (203)322-6294 rying just a little extra power until the ♦ * * wheels touch, and letting the tail ride high In this column recently I reported on the for a few seconds w ill bring the house efforts of Robert "J.B." Jablonski to get a con Streak, a P-51 Mustang semi-scale profile down. Do it with finesse and a light touch, trol line club going in Heidelberg, West kit, etc. Robert's own design, "Mr. No- and be one of the good guys! · Germany. Name," is a simple trainer used by the fliers. Robert reports that a small club has The Mustang kit, by the way, came with in Control Line. . .Continued from page 39 formed, and, "Yes, CL is alive and well' in structions in Spanish, but the fliers are couraging the beginner and the junior flier. Heidelberg, Germany." The club is starting using the diagrams as a guide. It just shows I must say the recent Model Builder article out with basic airplanes such as a Baby Flite what dedicated modelers can accomplish! JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ΈΜ MODEL BUILDER SENT YOU! 101 .49, and .60 engines, and the racer was po CONGRATULATIONS wered by a Fox Rocket .35. Frank also included a list of information 1987 NAT’S W INNERS taken from the trophies won by Charles 1 s t P la c e while he was a member of the Miniature Motor Club of El Paso, Texas. The following MASTERS - JIM EIDE are the more impressive when we remem EXPERT - GENE MAXWELL ber that such contests in that era drew SPORTSMAN - GENE RODGERS dozens, sometimes hundreds, of entries: 1. International Aviation Celebration, El AGAIN - OUR THANKS Paso, possibly for ignition-powered speed plane. TO ALL THE 2. First place open UC, A-B speed, July 4, "TIPO” FLYERS 1949, El Paso. THIS YEAR! 3. Tucson Roundup, First Place, D Speed. 4. Lubbock Open, Second Place, D Speed, 1952. 5. First Place, D Speed, El Paso. 6 . First Place, D Speed, December 31, 1950, El Paso. 7. High Point UC, El Paso. 8 . New Mexico State Fair, A-B Speed, First , t U and Second Places, 1952. A )— - Now available: TIPO+,< 9. High Point UC, El Paso, December 31, 1950. TIPO 750, HIPPO TIPO (825), Write or call for full information. Speed contest cards showed that Charles Bowman turned the following speeds: A DICK HANSON MODELS ALL SHIPPING VIA UPS Speed, 108.23 mph with the McCoy .19; B AVAILABLE DIRECT FROM 5269 LUCKY CLOVER LANE UPS CHARGES EXTRA Speed, 126.76 mph with the McCoy .29; C MURRAY UTAH 84123 PHONE (801) 261-1402 Speed, 120.72 mph with the McCoy .49; D Speed, 129.03 mph with the McCoy .60. After the restoration project, Frank re ports that he was impressed with the time mS S S = S FOLLOW THE LEADER* and work that went into their construction. STATE OF THE ART If anyone who remembers flying with MODEL ENGINE ACCESSORIES Charles in the "good old days" and would like to write to him or to Frank, here are their addresses: Frank Bowman, 1211 N. Al len, Farmington, New M exico 87401; Charles Bowman, P.O. Box 97, Berino, New Mexico 88024. * * * Along the same lines, I have some photos provided by Lee Hoffman of some of his first PiTTS STYLE MUFFLERS CL models, w ith dates ranging from 1937 to 1939. However, here are a few words from Lee: "A section of that article (August 1988 Model Builder Cl column) regarding the in quiry of Ronald Cunningham as to the historical aspect of monoline control lines sure twanged my 'G' string. "When I was a kid, some 5- and 10-cent stores were selling a single sheet of printed "DRILL MOUNT MASTER - ENGINE TEST STANDS balsa to cut out and form a glider. We had to GIANT SIZE MUFFLERS make our own glue from acetone and film ••POWER STICK” or use LePages Mucilage. [FREE c a t a l o g / 164 School St. Daly City, CA 94014 "From there, someone got the idea to tie a (415) 756-3400 string to the wing and swing it overhead like a sling and go round and round. We learned trimming the glider to fly level. O u r main flying consists of solo stunt ing correspondence from Frank Bowman of "Then, balsa and tissue built-up ROC practice, as all of us are new or getting back Farmington, New Mexico, who has pro came next. After we got tired of getting that in after many years like myself, or imitation vided some wonderful photographs of sucker to fly off the ground and fly into the combat with whatever is at the field. The some vintage CL speed airplanes built by nearest obstruction, somebody got the idea combat is popular and helps build our fly his father in the 1940s and 1950s. Frank's to pound a stake into the ground, fix a rotat ing skills, and it's fun for spectators." The father, Charles B. Bowman, born in 1908, ing sleeve to it and sewing thread to the Heidelberg group requires mufflers on all now lives in Berino, New Mexico. He also wing. Stretch the length of the thread out engines above .049. was an active free flight modeler, and Frank and let her take off and circle the area. The "I only have nine months left in Germany, is trying to identify some of the F/F planes length of the thread depended on experi but the seed is now planted," Robert writes. pictured in an old photo album. mentation. No instructions were available "I only wish I had a couple of years to see Frank has received eight of Charles's old for any of these experiences, just de where it goes and watch it grow." speed planes and one that belonged to one termination. of Charles's flying friends; he has restored "Skipping through a decade of rubber- * * * seven of them, along with an old team racer. driven craft which added size and power Since May of 1988 I have enjoyed receiv Speed engines included McCoy .19, .29, and incidentally losing good models in 102 MODEL BUILDER Free shipping on orders No service charge on credit over card orders!!!! $250.00·* TOM STROM'S SHOESTRING FI COMING SOON!!!!! b b y Supply Premier Pykm Racing KITS Competition Hobby A Division of Hobby Town Specialty CG V E C T O R ARC 1 0 9 .9 5 Stwp Inc. Outlet CG CHIPMUNK 6 9 .9 5 G .P. P T -4 0 4 9 .9 5 2 CYCLE ENGINES The SCAT CAT 500 3 4 .9 5 o.s. Retail SALE EDGE A CE 4 -6 0 5 9 .9 5 25FP 94.95 58.50 (FROM NORTHWEST RODDY SUPPLY) PRATH ER LIL TONI 1 1 9 .9 5 35FP 99.95 59.50 SIG BANSHEE C/L 2 6 .5 0 Quickie 500 Racer 40FP 104.95 63.50 SIG CHIPMUNK C/L 4 1 .5 0 Holder of the NW Quickie 40FP-S 99.95 58.50 SIG MAGNUM C/L 5 9 .5 0 500 record! 40SFABC 194.95 129.95 Starter Package 46SFABC 219.95 145.95 Complete Fiberglas and Great Planes ΡΓ-40 Trainer 61SFABC 294.95 192.50 Foam Kit, all wood and O.S. Max 40 FP Engine 40VR-P 239.95 149.50 hardware included! Futaba 4NL Radio w/ 4 SUPERTIGRE Servos S40ABC 154.95 104.50 $ 7 9 .9 5 RETAIL 4 5 9 .9 5 S45ABC 159.95 109.50 Standard Sale 2 4 5 .9 0 S61ABC 219.95 139.50 COMBO SALE $239.95 X-40 199.95 144.50 RADIOS G40 SP 119.95 83.50 FUTABA S3000 284.95 189.50 2NBR 63.50 Ask about our weekly telephone specials MAGNUM J R 86.50 4NL W/3 SERVOS 109.95 ROSSI 40ABC 123.50 ACCESSORIES 5NLP/PCM 234.95 PERFORMANCE SPEC. FOX 40 DLX 75.50 7FGK/FM 209.95 FIREWALL MOUNTS 7FGHI/S130 252.95 FOX 35 STUNT 31.50 (OS40/45.ST40/45. OS40/46, K&B 20 SPORTSER 43.50 6FGK/AM 186.95 K&B 6.5, ROSSI 40) 6NL/FM 180.95 K&B 45 SPORTSER 58.50 15.25 2” ALUMINUM SPINNERS 21.25 For immediate shipment: 2.25" NYLON RACING WHEELS 4 CYCLE ENGINES 5.95 National Watts (includes WA): AXLES FOR RACING WHEELS SAITO 2.50 FA 50 199.95 152.50 1- 800- 541-0645 AIR SHRINK TUBING 2.00 FA 65 229.95 169.50 Information & local residents O-RINGS (IO) 4.75 FA 80 264.95 191.50 (206) 531-8111 (CALL ABOUT OUR OTHER FA 90T 469.95 364.50 Hours: PYLON RACING ACCESSORIES) FA 120S 299.95 286.50 Mon to Fri 10:00 to 8:00 PM Saturday 10:00 to 6:00 PM DUBRO O .S . M A X 25% OFF THRU FS 26 SURPASS 137.50 "Sunday 12:00 to 5:00 PM FS 40 SURPASS 167.50 «Pacific Slanrfai<1 Time) JAN. 15. 1989 i FS 48 SURPASS 195.50 Mail checks & money FS 91 SURPASS 248.50 orders to: Northwest Hobby REV-UP PROPS FS 120 SURPASS 328.50 Supply 2 0 % O FF Y S F U T A B A P.O. Box 44577 BY THE DOZEN!! Tacoma, WA 98444. YS 120 $ 3 6 4 . 5 0 ‘ ♦nxenPT KITS AND OVERSIZE PACKAGES Payment: Visa, MasterCard, Checks, & C.O.D. (C.O.D. charge $3.50) Make checks and money orders payable loNorthwest Hobby Supply. Terms: Please allow 3 lo 4 weeks for checks and money orders. Visa and MasterCard will not be charged until we ship your order. Prices are subject to change. Authorized returns only. Returns may be subject to a restocking fee. Tax: Washington Stale residents add 7.8% sales tax.______„______ JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL 'EM MODEL BUILDER SENT YOU! 103 IMPORTANT INSTRUCTIONS: Non-commercial (personal items) rate Is 25 CLASSIFIED ADS cents per word, with a minimum o f $3.00. Commercial rate is 40 cents per word, with a minimum of $5.00. No advertising agency discounts allowed. Name and address free, phone number counts as two words, abbreviations count as whole words and will be spelled out. All ads are payable with order, and may be for any consecutive Insertion period specified. Send ad payment to: MODEL BUILDER, Classified Ads, 898 W. 16th, Newport Beach, CA 92663. SCALE RUBBER PLANS Ryans, Stinstons, Boe IMPORTED DIESEL ENGINES - WORLD'S WANTED: Ramiet. pulsejet engines and plans. ings, Curtiss, Thompson, Japanese, French, BEST SELECTION: Current production Aurora, Gary Ket, 11220 Mountain View #101, Loma German. 29 all new collector quality plans $600 Cipolla, D-C, Enya. KMD. Mikro, MK-17, MWS. Linda. California 92354. each. SASE for list. Flying Scale Inc., 1905 PAW, Pfeffer. Silver Swallow & USE Diesels. Also Colony Rd., Metairie, Louisiana 70003. Mills and Taplin Twin replica diesels and very "LEARNING TO FLY R/C With Or Without An special imported glow engines. $1.00 Catalog. Instructor," $2.95 plus 65 postage Jim Water WANTED RTF u/c Planes from Aurora/K&B, CARLSON ENGINE IMPORTS. 814 E. Marconi, man. 3818 Deerfield Dr., San Antonio Texas Comet, Cox, Gilbert, Sterling, Testors. Wenmac. Phoenix, Arizona 85022. 78218. etc Complete or pieces, buy or trade. John Fietze, RO. Box 593. Lynbrook. New York 11563. AERO CLUB OF ISRAEL modeling flying SOLID WALNUT MODELS from the Boeing/De needs your support Send SASE for newslet Havilland DH-4 to the F-14 Tomcat. Precut kits, WANTED: Ignition model airplane engines and ter and information. New Friends of the Aero uncut kit cuts and plans only. Write today for free model race cars made before 1950. Jim Clem, Club of Israel, 79-02B 212 Street. Bayside, New brochure The Woodworker's Shop, RO. Box 1201 E. 10, PO. Box 524, Sand Springs. Okla York 11364 7254. Springfield, Illinois 62791. homa 74063; (918)245-3649 ANTIQUE MODEL IGNITION PARTS CATA LOG: GHO, Delong, O K McCoy, others. WANTED: Berkeley and Cleveland kits or CARBON FIBER: sheets, rods, angles, mat. tail- related items: parts, plans, boxes, brochures, boom. Other Free Flight supplies. Send SASE Timers, needle valves, tanks, cylinders, oper ating instructions, kits. Catalog 1988, 1,000 books, ads, radio equipment, accessories, etc. to Bradley Model Products, 1337 Pine Sap Ct„ Gordon Blume 4649-191st Ave. S.E., Issaquah, Orlando, Florida 32825. Parts, $500 pp. Foreign $9.00. Chris Rossbach. R.D 1 Queensboro Manor. Box 390. Glovers- Washington 98027. ville. New York 12078. WANTED: SPARK IGNITION MODEL AIR WHERE THE SKY BEGINS on seven VHS cas PLANE engines circa 1930-46 Fair, competi WWI AND WWII POSTERS In color, imported settes Lilienthal to Bleriot in "soap opera" for tive prices. Tom Forsythe. 318-12th Ave, Box mat. Paid $140.; sell $85. Interesting Aeroplanes' 141, New Glarus, Wisconsin 53 574; from England, 20 x 30. suitable for framing. Sample photos, send $1.00 to Biggin Hill Publ.. Bill Warner, 423-C San Vicente Boulevard, Santa (608)527-2066. Monica, California 90402. Box 786-0, Freeport. New York 11520. 4"x8" vacuum former with self-contained heat source Easily constructed from local materials. CUSTOM EMBROIDERED PATCHES Your de SCALE DOCUMENTATION: PLAN ENLARG Plans $12.00. Complete unit $42.00 postpaid. sign, made any size shape, colors. Five-patch ING. Photo packs, three views, drawings for GRACO MODELS. Box 18358. Kearns. Utah minimum, guaranteed colorfast. Free brochure 1600 aircraft. Super Scale R/C plans for Giant. 84118. Hein Specialties, Inc., Dept. 238, 4202 North Sport. 60-page catalog $4.00. Scale Plans and Drake, Chicago. Illinois 60618-1113. Photo Service. 3209 Madison Ave, Greens boro, North Carolina 27403; (919) 292-5239. Half-mil aluminized mytar 48" wide Can be used to make bag for Silver Cloud R/C blimp (see MB MODEL MOTORS NEW AND USED. ALSO BENSON HOBBY PRODUCTS: Designer and Dec 87) or your own design. Instructions in PARTS. ACCESSORIES. KITS Complete list. cluded upon request. 50c/ft plus $500 for UPS manufacturer of a wide range of electronic ac $1.00. T. Crouss, 100 Smyrna St., West Spring- cessories for electric R/C High quality, low shipping. Tony Avak. 114 Atlanta St., Lexington field, Massachusetts 01089. Park. Maryland 20653. prices SASE for brochure Benson Hobby Prod ucts. 7119 N. Chimney Rock Place. Tucson, Ar COMPUTER PROGRAM: PATTERN MASTER izona 85718. "HELLO HOVER LOVER." This is for the pilot — Use your IBM P/C or compatible to make with a passion! THE ALL NEW 1989 HELO- cutting patterns for aircraft covering Program CALENDAR. It makes a wonderful gift, espe and user guide $2495; demo version (includes ELECTRIC FLIGHT EQUIPMENT The best and cially if you want to convert a fixed-wing friend! $5 coupon for full version) $5.00. Chandero largest electric flight supply in the Northeast Pictures are Ηι-Gloss and each color picture Systems. 14 Parkview, Long Valley, New Jer Specializing in ASTRO FLIGHT Equipment. Kits, is suitable for framing Includes trivia and date sey 07853. motors, batteries, light weight building supplies facts, full-size and R/C. Measures (85" x 11" and all your electric flight needs. Send $2.50 for x 17" open). This new 1989 HELO-CALENDAR Catalog to CS FLIGHT SYSTEMS. 31 Perry should make a welcome addition to any work Chester's "GOON", "GEE BEE's". "BULLDOG", Street, Middleboro Massachusetts 02346 or call bench, shop or hangar. Send $10.00 U.S. mo etc — New Plans Catalog with News $3.00. (508) 947-2805 to order. VISA & MASTER CARD nies, check or money order, outside continen REFUNDABLE: Vern E. Clements, 308 Palo Alto tal U.S add $2.00 postage and handling to Dr.. Caldwell. ID 83605. The R/B Bunch. PO Box 27082. Memphis. Ten thermals and with the advent of gas engines nessee 38127-0082 1930s MODEL SHOP! Sawed prop blanks. WWI/Balloon/Streamline balsa wheels, Hinoki being developed, the same problem be PLANS ENLARGED: Large Scale Specialists, wood, color nitrate, sticks, tissue bobbins, prop came prevalent with gas-powered free Model Drafting Software PC Model Software. hinges, bamboo, old Scale/Contest plans, and flight. Free catalog Concept Technology. PO. Box more! Illustrated mail order catalog: $2 Oldtimer "M onoline control was inaugurated by Model Supply. RO. Box 7334, Van Nuys, Califor 669D, Poway. California 92064; (619)486-2464 Victor Stanzel somewhere in the m id nia 91409. thirties with a kit called the Tiger Shark, a SPECIALIZING IN MAJOR DECALS: for fast HOBBY SUPPLIES at discount. Send stamped racing-looking plane. It was controlled in service and good prices, send for free catalog self addressed envelope for catalog. Penron flight circles by using a long rod with a wire to: Clark's Aircrafters Supplies. 501 Raintree Mal Products, Box 13051, Arlington. Texas (or string) attached to the w ing and by de vern, Pennsylvania 19355. 76094-0051. scribing an arc with the pole, the model 3000+ old MAGAZINES/BOOKS - Model, Avi was supposed to loop, dive, or climb. I grew PLANS ENLARGED — Large scale specialists. ation Lists: $1.75 and 45C SASE \fern Clements. very weary of whipping that pole around to Model drafting software PC model software 308 Palo Alto Dr.. Caldwell. Idaho 83605 keep the plane from diving in. Free catalog. Concept Technology, RO. Box 669D. Poway. California 92064. (619) 486-2464 WANT AND SELL: Selling aircraft kits, motors. "M y 1937 Tiger Shark was powered by an Duet. R/C cars. SASE Wanted Kraft S/S 1980 Ohlsson .19 and underpowered (still poor or newer F Sanford. 3607 Waville Rd., NE, Be- instruction). NEW DIESEL ENGINES for sale Easiest starl midji, Minnesota 56601. "About the same year, Jim Walker entered ing MK-17 09 C/L $38 World's best KMD .15 C//L $64 MV VS .09 R/C $48. Send check to: WANTED: Ignition model engines and race the field with his U-control, which made a Mr John Pfeifer, 6608 Marsden St.. Philadel cars, 30s and 40s vintage Don Blackburn, RO. lot more sense to the pilot, and I converted phia, Pennsylvania 19135 Box 15143, Amarillo, TX 79109; 806-622-1657. that same plane to U-control with an in verted Ohlsson .60, which sure put me in 104 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER INDEX TO ADVERTISERS Ace Radio C o n t r o l...... 65 P.A.W. Diesels...... 84 A erodyne In d ...... 96 H igh S k y ...... 74 Pacer Tech (ZAP)...... 7 2 ,8 4 Airtronics, Inc ...... 6, 7 H is to ric A v ia t io n ...... 1 Peck Polym ers ...... 84 A m erican J r. A irc ra ft Co...... 70 H o b b y B o x ...... 81 Pharis M o d e ls ...... 88 Associated E lectrics ...... 68 H o b b y H o r n ...... 70 Pierce A e ro C o...... 72 A s tro F lig h t In c ...... 71 I.M .S . P asadena...... 88 Polk's Model Craft Hobbies...... 93 B & D M odel P ro d u c ts ...... 96 Indoor Model S upply ...... 66 R/C Model Car Subs ...... 105 B & P A sso cia te s...... 94 J ’ T e c ...... 98 ,102 R /C B uyers G u id e ...... 77 Beemer R/C West Dist. Inc ...... 107 Jed's Shade Canopies ...... 92 R udi T e s a ...... 76 C am pbell's C ustom K it s ...... 76 Jim Walston Retrieval Systems...... 80 Satellite C ity ...... 67 Cannon Electrics ...... 80 JM Lupperger Plans ...... 76 Sermos R/C Snap Connector...... 101 Carl Goldberg M odels ...... 99 Joe's Hobby Centers ...... 81 Sheldon's Hobbies ...... 97 Circus H obbies ...... 69 John Pond O /T P la n s ...... 101 Sid Morgan Vintage Plans ...... 90 Conley Precision Engines, Inc ...... 79 Jomar Products ...... 74 Sig Manufacturing Co...... 4, 5 C o v e r it e ...... 90 K & B Manufacturing ...... 80 S u-P r-Line P r o d u c ts ...... 90 Culpepper Models Inc ...... 94 K & S E n g in e e rin g ...... 72 T & D Fiberglass...... 88 Cygnet Softw are ...... 90 K & W E n te rp ris e s ...... 66 T E A M , In c ...... 82 D C A v ia t io n ...... 94 Kalt Helicopters ...... 69 Technopower II, Inc ...... 83 Davey Systems Corp...... 77 M a jo r D ecals...... 86 Teleflite Corporation ...... 107 Dick Hanson Models ...... 102 Mammoth Scale Plans ...... 86 Thorpe Engr. (Star Hawk)...... 73 D o y le je t ...... 97 M a t r i x ...... 65 T o le d o S h o w ...... 98 Du-Bro Products ...... 96 M cD aniel R /C , In c ...... 66 T o m D i x o n ...... 84 F. A.I. Model Supply ...... 81 Micro-X Products ...... 65 Top Flite Models, Inc...... 75 F a b tro n ic s ...... 76 Midway Model Company ...... 70 U.S. Boat 8i Ship Modeler Subs . . . .105 Flying Video Productions ...... 80 Millcott Corporation ...... 92 Uber Skiver ...... 108 Flyline Models, Inc...... 74 M o del B u ild e r B in d e rs ...... 107 Walt Mooney Peanuts ...... 92 Fourmost Products ...... 82 M odel B u ild e r Subs...... 100 Williams Bros...... 101 Futaba Industries .... 87, 91, Cover 3 Model Rectifier Corporation . . .Cover 4 World Engines...... 3 G. M. Precision Products ...... 2 Model Research L a b ...... 78 W R A M S h o w ...... 85 Great Planes Manufacturing ...... 95 North West Hobby Supplies ...... 103 Yellow Aircraft & Hobby Supply . . . 75 Hayes Products ...... 74 O. S. E n g in e s ...... 89 Zenith Aviation Books ...... 64 the racing class and having an adventure Wire, 150 feet of .014-inch in. jlated wire and that includes those of us who grew up with every flight. (The .60 added nose from Sage Engineering Co., Chicago, Il in the 1960s, who learned this hobby weight to balance the CC, which was too linois, for $1.50. With instructions that largely by their own trial and error. far aft.) Still trial and error by the individual showed the batteries attached to the pilot's When people talk about how to bring in those days. belt and clipped to the control wires. So junior fliers into the hobby and create "Another 50-year-old memory is using what else is new?" Lee's description of the elaborate methods for attracting and teach electricity up the control wires to the plane old days of CL modeling brings back mem ing youngsters to fly, a commendable and is in the package of Electra-Line Control- ories for every one of the older generation, necessary thing these days, I remember my $25.00 for one year (USA, Including and APO). $47.00 for two years (USA^ including FPO and APO). For pratec'’ mailing bag, add SJMiO for one year, $6.00 for two years. For overseas subscriptions, (one year, Begin my subscription with th e ______issue. Mastercard or Visa number: tnclucfing Canada & Mexico, but not Expiration date______Signature______APO or FPO: $38.00. Two years, R/C MODEL CARS 898 W. 16th St., Newport Beach, California 92663 Payment must be in Ci.S. funds, N a m e ______drawn on a U.S. bank. A D D R E S S ______C IT Y ______STATE______ZIP JANUARY 1989 105 NEW ORDERING INSTRUCTIONS STATEMENT OF OWNERSHIP MANAGEMENT AND CIRCULATION U.S. orders, including APO and FPO, add (Required by 39 U.S.C 3685) MODEL# 1 Dale of Filing: October 28. 1988 20% ol total order for shipping and han 2 Title of Publication: MODEL BUILDER MAGAZINE BUILDER dling. Overseas orders (includes Canada 3 Frequency of issue: Monthly. Alt Full-Size plan· purchased from MODEL BUILDER and Mexico) add 50% of total order. Remit 4 Location of known office of publication. 898 West Magazine indude a ropnrft of the construction article, H build payment by International Money Order or 16th St.. Newport Beach, Orange County, CA ing instructions were part o( the article 92663-2802 U.S. funds, drawn on U.S. bank. Please, no 5. Location of the headquarters or general business SEND TO: MOOEL BUILDER PLANS SERVICE cash or C.O.D.’s. Mastercard or Visa include offices of the publishers (not printers): 898 West 16th St.. 898 W 18th St.. N ew port Beach. CA 92883 card number, expiration date, and signa Newport Beach. CA 92663-2802. Minimum order: $10.00 6 Name and addresses of Publisher. Editor and ture. Add 5% to credit card orders. Califor Managing Editor nia residents add 6% sales tax. Publisher: W.C. Northrop. Jr.. 898 West 16th St., New port Beach. CA 92663-2802 Managing Editor: NONE. No. 1891 DAYDREAM BIPLANE $23.00 own youth, when I learned to fly CL models 7. Owner: RCMB Inc.; Wm. C. Northrop. Jr. President. A big, easy-flying sport scale designed not from adults but from other kids. The Anita Northrop. Treasurer. 898 West 16th St.. Newport fo r a .65 4-stroke. 6 0 " span. Benjamin. Beach. CA 92663-2802 adults flew their .35-sized planes at one end 8. Known bondholders, mortgagees and other secu of the field, and the kids struggled with the rity holders owning or holding 1 percent or more of total No. 1891-O.T. LI'L MISERY $7.50 amount of bonds, mortgages or other securities: NONE .049s on the other. As we got bigger, so did 11. Extent and Nature of Circulation: An interesting fuselage pod-model from the planes. There were several kids in my '4 2 w ith 50" span. By Cohen & Worth. own neighborhood who worked together Actual Average no copies to learn to build and fly. That kind of energy no. copies of single No. 12881 R/C GUFF $25.00 for a hobby which requires some continu each issue issue Pioneer R/C aircraft, won '38. '39, '40, ing effort seems to have disappeared; w ith during published '47 Nats,nowinSmithsonian.Walt Good. preceding nearest to out an adult's guidance, the modeling 12 months filing date A Total No. Copies Printed 163.030 175.720 No. 11881 THEWHISP $10.00 hobby simply doesn't germinate. (Net Press Run) Simple R/C hand launch glider for slope Lee's mention of the electric control lines B Paid Circulation or park flying. 49-inch span. By J. Tank. also reminds us of the use of control lines to 1 Sales thru Dealers transmit both electricity and fuel when the and Carriers. Street No. 11881-OT CLASS C GLIDER $7.50 Prop Spinners of Eugene, Oregon, made Vendors and Counter A Joe Weathers classic glider design from their single flight of more than 64 hours in Sales 139.121 150.692 Flying Aces. 1939. Wingspan is 30 inches. 2 Mail Subscriptions 15.844 16.418 1957. The plane, a modified Veco Chief C- Total Paid Circulation 154.965 167.110 No. 10881 HAWKER HURRICANE $17.00 with a custom two-plug K&B .35 engine, D Free Distribution by Mail A control line sport scale for .30 to .40 used an electric servo to control the needle Carrier or other means engines, made of cardboard I C. Felton valve and a tank fed w ith fuel from a gallon Samples. Complimen can on the pilot's belt. The fuel and electri tary and Other Free No. 1088-OT PORTERFIELD $7.50 Copies 2380 3.140 Rubber scale monoplane from 1940 Fly cal systems were designed by the late Oba E Total Distribution ing Aces. 28-inch span. C. McCullough. St. Claire, credited by many as being the ac (Sum of C and D) 157.345 170.250 No. 9881 BLACK STAR $10.00 tual originator of CL flying. Imagine a single F Copies not distributed A swept-wing, Vee-tailed R/C model for flight of a single airplane lasting from Satur 1 Office use. left over an .049. Uses foam wings. By Saponara. day until Monday! unaccounted, spoiled after printing 2.110 2.060 2. Returns from New No. 9882 CONSOLIDATED XBY-1 $7.50 By the way, Lee Hoffman mentioned the Agents 3575 3,410 A rubber-powered bomber in 1 /20 scale late, great Jim Walker, CL's most famous G. Total (Sum of E and F— with a 27-inch span. By Mark Fineman. should equal net press early flier and promoter. run shown in A) 163.030 175.720 No. 1073-OT GOLDBERG ZIPPER $10.00 Well, along comes a letter from Jim M ost fam ous o f all O T gas m odels, ended I certify that the statements made by the above are cor cabin era Redrawn by Phil Bernhardt Walker, of Everman, Texas. Jim writes: rect and complete Anita Northrop. General Manager "I just wanted to let you know I really en No. 9881 BLACK STAR $10.00 joyed your article in the September issue of Cyclone and a control system installed. My A swept-wing, Vee-tailed R/C model for Model Builder. For some time now I have flying buddy had a Comet Clipper with an an .049. Uses foam wings. By Saponara. wanted to fly control line planes. I built a Ohlsson .60 converted to CL. No. 9882 CONSOLIDATED XBY-1 $7.50 Flite Streak, with a Fox .35 stunt. "We learned to fly the hard way: Do it un til you can do it! We both learned to fly and A rubber-powered bomber in 1/20 scale "My only problem is no one to help me with a 27-inch span. By Mark Fineman. fly. I had given up on the idea of even flying went on to some of the very few kits of the it. After reading your article, I have decided day. The kits I liked the most in the late for No. 1073-0T GOLDBERG ZIPPER $10.00 not to give up, but work harder to get some ties were the Berkley Zilch types. (I have M ost fam ous o f all O T gas m odels, ended flying help." I'm glad to hear that because three of them in my collection now.) cabin era Redrawn by Phil Bernhardt Texas is the home of many great CL fliers in 'The thing that really made CL take off stunt, combat, racing, and speed. Besides was the invention of the glow plug. Many No. 8881 MEYERS OTW-160 $10.00 that, a guy with the name Jim Walker, has to fellows just could not get an engine to run A sport-scale replica of a classic biplane on spark ignition. The glow plug also al for .45 power. 50-3/4" span. Rohrback. fly control line! GOING SHOPPING lowed the use of smaller engines, no coil No. 8881-OT F.A. COMMERCIAL $5.00 The mail also brings news of control line and batteries to haul around. From the October, 1936 issue of Flying products, and the supply of those items con "You are right about the manufacturers Aces, a fun rubber job by Herbert Spatz. tinues to grow, most of it in the form of small and hobby shop operators abandoning the manufacturing companies operated by mod CL flier. The sad part about the shop owner No. 7881 LITTLE JOHN $10.00 elers who have seen the need to supply the to me is the fact that much of the equipment Reduced-size version of Bill Northrop's growing number of CL fliers orphaned by bought in local shops is credited to R/C, but "Big John," for 4-strokers. A. McLeod. the big companies. used for CL. If you walk into hobby shops Here's a letter from Jim Correll, of Clarks today and mention CL, they either don't No. 788-OT FOO-2-U-2 $5.00 ville, Indiana, about a new operation. have time to deal with you or they don't A small electric version of Dick Obarski's 1938 Old Timer favorite. By Don Srull. "I just read your article on starting out in have the background to speak the language. the control line events. Having started my "With all of the above in mind, a few No. 6881 SUKHOI SU-26 $10.00 self in the 1940s, I feel I am qualified to get months ago I decided to set up a small mail A control line profile model for .35 eng in on this subject. I, like many others in order business and try to bring back some ines. 48-1 /2-inch wingspan. R.Schneider. those days, learned to fly on a 'goat.' My of the good old tried and true methods and goat was a Buzzard Bombshell with a Super equipment that very few hobby shops w ill 106 MODEL BUILDER stock. 'The first step was to become a distribu tor for Randol ph butyrate and n itrate dopes. C0VERUP! Very few shops today stock any dope, and none stock Randolph, which is the best. "The next project was to develop three CL Sturdy, high quality, rich dark kits, locate wood, hardware, wire, etc. green vinyl-covered binders for These kits are now about ready to box (as of your valued copies of MODEL August 1988). BUILDER Magazine. Gold lettering 'They are of the style of the fifties, with on spine and front cover. straight wings, upright engines, gear in the body, full body, by the way. I have never like profile models with the side-mounted en BUILD YOUR gine along with the vibration problem at the wing-to-body joint. Even in a trainer I OWN ROCKET don't recommend it. . The engine sizes are .19 to .49. This is MOTORS! as you say, a cottage industry. Production WE CAN SHOW YOU HOW! will be low but of high quality." jim will send an information package to anyone who sends a large, self-addressed, stamped •40 POUNDS envelope to ABC Hobby Supplies, P. O. Box 2391, Clarksville, Indiana 47131. THRUST! A flyer Jim enclosed shows pictures of three very nice-looking airplanes called the • 50C EACH! June Bug, Commander, and Lady Bug. • With a rock tumbler and some simple hand tcols * * * well show you how to build YOUR OWN rocket One Binder...... $695 engines in your own garage or workshop (or 1/5 to Three Binders...... $17.95 The mail also brings a letter from Eric 1/10 the cost o! the commercially marketed motors • INTERESTED? Just send us S2 00 and we H mail you Five Binders...... $27.95 Clutton, distributor of PAW diesel engines our brochure along with a WORKING SAMPLE ol an in the United States, chastising me roundly: electric igniter that YOU CAN MAKE YOURSELF from (For more than 5, include "I don't see much mention of diesels materials you II lind around the house $5.00 for each additional TELL YOUR FRIENOS ABOUT US' We re the 00 IT (don't see any mention!) in your column. YOURSELF ROCKET people b inder.) PAW .35 has won the British Cold Trophy at Wru# to: Department MB 1 The Telefhte Corporation the Nationals over there twice, with many 11620 Kitching St., Moreno Valley, Calif. 92387-9978 Shipping: Binders shipped in U.S. by high places plus places on overseas stunt UPS only. For one binder, add $2.25. teams. For each additional binder add 75$. For "Flying a diesel control liner is a different binders shipped outside U.S., add experience. Speeds tend to be constant with no slowing up for the corners. A diesel $4.00 for one binder. For each addi is also less critical on fuel and w ill continue MULTIPLEX MODELTECHNIK tional binder, add $1.50. For Air Mail to run even when the settings are w ildly off. Gmbh of West Germany offers to you: rates overseas, please inquire. "Fuel consumption is only about two- —True narrow-band conversion technology PLEASE All payments must be in U.S. thirds of a similar size glow, so smaller tanks —The finest equipment funds, drawn on a U.S. Bank. are used. Finally, with all this talk about —Competitively priced noise problems, diesels are qu/et! The —Beemer-Muitiplex VIP Service California residents add 6% Sales Tax larger PAWs also have a proper (The best) silencer/muffler fitted as standard, so they —Full stock of accessories and parts are really quiet. MODELS Send $5.00 for new catalog in English "Don't let the lack of noise fool you. or call us: (602) 483-9577 BUILDER Noise and rpm do not fly airplanes; the magic word is thrust." Everything Eric says 898 W. 16th Street about diesels is true in my observations. The chief thing that keeps diesels from BEEMER R/C WEST DISTRIBUTORS INC. Newport Beach, CA 92663 7725 E. R edfield Rd.. S uite 102 becoming more popular are the unfamiliar Scottsdale. Arizona 85260 ity of American fliers with them, combined to a lesser degree with a distaste that many if I could learn how to set the compression people have for the strong smell of the fuel. and needle valve and had some practice Fuel also is a small problem, not often be My own project was prompted by receiv with it, it actually would become quite a ing available in hobby shops; it usually ing in the mail, from my pen pal, Charles simple endeavor. must be ordered by mail or obtained from Windows, in England, a PAW .19 and .09. For the rest of us in the CL community the local FAI team race enthusiast. Along with them came plans for the Fifth who are curious about diesels. I'd like to in I've flown a number of diesel planes and Revolution, a plane used in the popular En vite anyone out there who has some exper been amazed at the amount of power glish Diesel A Combat event, their equiva tise to send in some information; perhaps generated by a small engine running at low lent of American slow combat. we can put together a future "how-to" rpm and turning a big prop. One of the I found the plane to be an excellent flier column. Northwest's balloon bust champions uses a with the .19 engine, but confess to never Meanwhile, interested fliers can write very heavy foam-winged copy of a Flite having quite solved the mysteries of the Eric for a catalog of his diesel engines and Streak, powered by a .19 diesel, that seems diesel engine. products, including PAW and Quickstart ideally suited for that event. As Eric says, a I had difficulty getting it started and keep engines in a variety of sizes. His address is: diesel even with a sour run often will con ing it running; when I was successful, I was Eric Clutton, 913 Cedar Lane, Tullahoma, tinue running. never sure why. I finally ran out of fuel and Tennessee 37388. My own experience with them is limited. the plane now hangs unused. I’ve observed some team racing, flown However, I was convinced at the time that * * * some of other people's planes, and tried my failures were largely the result- of not Precision Aerobatics supplies may be one project myself. having any idea what I was doing; I felt that hard to find in the hobby shops at times, but JANUARY 1989 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 107 A CUT ABOVE Precision cutting instrument out lasts the competition by ten to one. The Uber Skiver was designed lo meet the precision require ments ol pholofahrication, microcircuilry, graphics arts pro duction, etc., and as such becomes the perfect cutting tool for the discriminating modeler. __ “ ΓΐΗΟΐΠ » < ***£ . 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...... S16.95 Advance Collet Design See your dealer, or order direct. Orders are shipped First Class in the U.S. Add 10% o f total order. Forlndividual handles (specify color) ...... $6 95 Hex Cross Sectuon overseas air mail, including Canada & Mexico, add vial of 6 blades (No. 10, 11, or 15) $4.00 Deeply Knurled Grip 50% o f total order. Remit by International Money ο λ . « λ on Blades can be resharpened Order or U.S funds drawn on a U.S. bank. Postage r is paid on APO and FPO orders. Calif, reside n ts add c ο λ o rv 6% sales tax. Dealer inquiries invited. jBlE) V!5^„and ^ , .RCARD j · ·τ m ■ μ MB add 5%, and include expir* fVl OJUtlL BUILDErX PRODUCTS ationda«eand Signature. California residents add 6% sales tax. 898 W. 16th. St., Newport Beach, California 92663 Minimum order: $10.00 there is no shortage of cottage businesses needs of CL modelers of all kinds. They are that supply the needs of the casual and seri pulling together all kinds of control line A ir Races...... Continued from page 18 ous stunt flier. A new shop has just opened kits, engines, tools, and accessories, as well car racing engines, and underwritten by a up in the Pacific Northwest, operated by as making some of their own. visionary sportsman, Bob Pond. one of CL's master craftsmen, Gerald At the very least, CL fliers w ill want to This writer had a chance to chat with Ru- Schamp. check out their catalog. Send $1 to Crafts tan on the press bus on the way out to # 8 Py For information, write Cascade Control man Models, 1311 East 161st St., Westfield, lon. Burt, a devoted and enthusiastic Line Stunt Shop, 931 Calapooia SW, Albany, Indiana 46074. modeler in his youth, talked of his un Oregon 97321. * * * limited racer project. Its speed w ill be in the 550-mph range and light, using the very ♦ * * Most CL fliers already know about Kustom Kraftsmanship, a longstanding ser latest in composite technology. Its daring Speaking of stunt, the latest from Control vice to CL fliers that we almost couldn't live concept is based on a canard laminar flow Line Classics is that they have released their without. Joe Klause supplies a wide range forward-swept wing. kit of the Oriental as promised but have of competition items ranging from racing Reno's Championship Air Races in 1989 decided not to produce the T-Bird I because fast-fill fueling plugs to Nelson engines. Joe hold a promise to be a vintage year for rac another company has one in the tooling has a complete line of stock and custom ing fans at the Shrine of A ir racing. · stage. However, Control Line Classics has Cox parts and engines for .049 competition announced plans to make a CL profile events such as racing and combat. And Jake...... Continued from page 9 Buster kit, suitable for sport flying, North many, many more things are listed in a cata to August 27, 1988. On that fateful day, a west Sport Race, and similar events. For in log available for $1. Regular customers as shorted cell in the battery pack sent the formation, write Control Line Classics, well as new ones want to note Joe's new ad Ryan careening toward Mother Earth. It 1788 Niobe Ave., Anaheim, California dress: Kustom Kraftsmanship, P. O. Box strained itself through a set of telephone 92804. By the way, the Oriental and the 3010, Fallbrook, California 92028. lines, leaving the wing behind. An AT&T earlier Classics kit of the Pow Wow are MARK YOUR CALENDARS crew was at work below the phone lines among a tremendous variety of control line If you are interested in old-time stunt and clearing a fallen tree. The Ryan fuselage products listed in the latest catalog from classic stunt, mark your calendars for Febru flew directly into their wood chipper and Tom Dixon, a stunt expert who specializes ary 18 and 19, 1989. exited the other end in a cloud of powered in supplying hard-to-find items. For a cata That's when the Vintage Stunt Champion balsa wood and MonoKote particles. The log, send $2 to Tom Dixon, Suite 401, 1938 ships of 1989 are scheduled at W hittier wing stayed up on the wires for two and a Peachtree Road, Atlanta, Georgia 30309. Narrows, California, near Los Angeles. For half weeks until the wind from a thunder * * * full information, write the contest director, and lightning storm blew it down into the "Modelers serving modelers." Now JoAnne Keville, at 6618 Dashwood St., Lake- path of a cattle stampede, which had been there's a slogan that catches my eye. wood, California 90713. started by the storm. Whatever was left was And when I saw the rest of the catalog As always, letters, questions, photo carted off by ground squirrels for next lining from Craftsman Models, Inc., I was even graphs, etc. are invited. John Thompson, materials. more impressed. Here is a new company in 1505 Ash Ave., Cottage Grove, Oregon O ur condolences, Mr. Lomax, may it rest Indiana that is going all-out to serve the 97424. · in pieces. · 108 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER COMPUTER CONTROL ERGONOMIC ENGINEERING Precision, fully electronic, comput The stunning electronics of the er programming is at your finger Futaba Seven Series are encased tips with Futaba's new Seven Series in an all-new transmitter case, er syste m s. gonomically designed for comfort With the 7UAP/7UAF 7 channel and optimum control access. aircraft systems you have accurate The contoured back gives you computer control for ATV, dual rate, a more stable grip. Mix, rate and exponential and mixing. Using data auxiliary channel controls are input keys, all programming settings slanted for easier reach. And the are made in 1% increments and open gimbal control sticks are are displayed on the LCD screen. adjustable for length. For the serious flyer, the benefits of computer programming is obvious. Flap- 7UAP PCM 1024 transmitter with trainer system and RF module. CHOPPER COMPUTER eron and aileron differential, snap roll (4), programmable mixing, fail safe and other THE NARROW MINDED RECEIVERS There are Futaba Seven Series for settings are made, displayed and stored helicopters, too, but you won't see the in memory for flawless performances Both the 7UAP and 7UAF systems usual difference in the transmitter cases. time after time. include narrow band receivers that meet Because of the many functions of the the 1991 standards. The 7UAP uses the computer system, it was unnecessary SCREENING OUT ERRORS same R129DP/9 Channel PCM 1024 to reposition many of the controls. What receiver as our 9VA professional model, is different in the 7UHP/7UHF systems In addition to programming functions, are five S5101 servos and 1000mAh the big LCD screen also provides infor NiCd packs. mation for servo reversing, PCM/PPM Join the computer age. The new switching, transmitter battery voltage Seven Series from Futaba are the sys and elapsed time of operation. Every tems advanced airplane and helicopter thing you need to know for a perfect pilots can count on. flight is there, in easy to read numbers, at the touch of a button. Even a low bat tery warning signal is included. An inside look at the R129DP shows the exclusive Futaba PCM 1024 microprocessor and surface mount construction (SMT). 7UHP PCM 1024 while the 7UAF is equipped with an Transmitter. R128DF/8 Channel, dual conversion F M unit. The R129DP and R128DF are assem bled using the latest, SMT construction F l r t a b a # for super reliability, efficiency and com Large LCD indicator screen monitors all program Futaba Corporation of America ming functions. p a c t size . 555 West Victoria Street. Compton, CA 90220 *1988 Futaba Corp wind. Rear spike tires have been added to dig GRASSHOPPER Π in and hold tight. There's also a new, more rugged sealed gear box with longer throw coil spring suspension. In addition, there are Its namesake, the Grasshopper, continues heavy-duty coil springs on the independent to be the best-selling entry-level R/C off-road front suspension The drive train uses a rolling buggy made. It's the one responsible for intro rear axle. And while it's compatible with ducing more hobbyists to the sport than all standard two-channel radios, it can be other vehicles combined. But the similarity be equipped with Battery Eliminator Circuitry tween these two buggies ends with the name. (BEC) or be used with a radio BEC R/C system. The Grasshopper Π is another story. It's i f i * Most interesting, is that as your driving easy to assemble, offers high-performance skills advance, the Grasshopper Π can keep features, and has an ability to be transformed pace. You see, it was designed to accept a into a racing machine. wealth of souped-up parts, including ball If you're coming into R/C off-road, or look bearings, oil-filled shocks, a 540 or Tbchnigold ing for a sensibly-priced entry-level buggy that motor. If you like, you can also install can offer Sunday fun, everyday value and still Thmiya's Adspec R/C system with electronic be competitive.. you want the Grasshopper Π. speed control. Upgrading A Legend Grasshopper Π. it's the next To begin with, there’s a new, generation and the only buggy sleeker, more rounded aerody MRC Q that could follow a legend and namic shape to slice through the borrow its name. TAMIYA MODEL RECTIFIER CORPORATION 2500 Woodbridge Ave., Edison, NJ 08817