NOVEMBER 50 cents volume 1, number 2 VA ounces, 3-pound punch!

New Heathkit Sub-Miniature Digital Proportional Servo utilizes an integrated circuit to trim off excess bulk. The Sub-Mini weighs-in at 1.25 oz.( measures 1%" from mount­ ing ear to mounting ear, yet provides the same 3-lb. thrust of much larger servos. Features include 90° rotation in 0.5 seconds; 1% position accuracy; ceramic variable control feedback element; nylon gears and molded nylon case. Just 18 components install quickly on printed circuit board. Includes 4 rotary outputs, is compatible with all Heath R/C Systems and most others. Measures 1%" H x % " W x l 7/e" L. Kit GDA-19-42, 1 lb...... 24.95* Heathkit Miniature 1C Servo gives you digital circuitry, proportional control, in a package that weighs 30% less, is 25% smaller than conventional servos-but out­ performs them with 4 lbs. of thrust. Includes both linear and rotary output assem­ blies, universal mounting ears. Weighs 1.75 oz., measures 1%" H x W x 2%" L. Kit GDA-19-41,1 lb...... 24.95* Heathkit 5-Channel Systems include 4 servos; Heathkit Miniaturized Receiver; Slim Line Transmitter with Kraft sticks, built-in charging circuit; flat-pack nickel cad­ mium batteries & free soldering iron. Specify frequency desired. System Kit GD-19S, with Sub-Miniature Servos for 12-oz. flying weight, 11 lbs...... 224.95* System Kit GD-19M,with Miniature IC Servos for 14-oz. flying weight, 11 lbs...... 224.95* System Kit GD-19, with standard servos for 16.6-oz. flying weight, 11 lbs...... 199.95* Low Cost 3-Channel Propo Rig includes 500 mW transmitter with trim controls, minia­ ture receiver, flat-pack batteries, 2 standard servos, plugs, connectors, charging cord, free soldering iron. System Kit GD-57, specify frequency, 8 lbs...... 129.95* Heathkit R/C Servo Simulator runs from optional internal battery or 120 VAC line. Can be used to charge both receiver and glow plug batteries. Kit GD-206, 2 lbs...... 19.95* Heathkit Thumb Tach gives 0-5000, 0-25,000 ranges. Kit GD-69,2 lbs...... 19.95* Heathkit “ Spectre” Car includes snap-on plastic body, chassis, wheels & tires, fuel tank, R/C equipment box, gears, axles, servo linkages, all hardware, decals. Kit GD-101,11 lbs...... 39.95*

HEATHKIT

HEATH COMPANY, Dept. 238-11 Schlumberger k . 1 Benton Harbor, Michigan 49022 I □ Enclosed is $ , plus shipping.

l ( r f I □ Please send FREE Heathkit Catalog. □ Please send Credit Application. ■ ■ r , ^ ■ ■ ( ? ~ Η» 6 1 City State______Zip ^ f * ------'Mail order prices; F.O.B. factory. i Prices & specifications subject to change without notice. GX-232 | OVER 39,000 JOINED IN 1971 7,000 more than the year before ! YOU CAN TOO!

AMA* MEMBERSHIP OFFERS:

liability insurance · special discounts · official rules manual · competition privileges

magazine subscription · exclusive decals · aid to air youth · national recognition

Subscription to American Aircraft Modeler is included with Liability Insurance is included with all AMA memberships. AMA adult membership—includes AMA news. Members under Bought separately, this insurance would cost more than the adult 19 can purchase the magazine at a special, low, AM A rate. AMA membership fee. Coverage is for $300,000!

Discounts on special items stocked by AMA Supply & Service Competition Privileges: All AMA members are licensed to enter Section—books, magazines, pins, decals, etc. the National Model Airplane Championships and all other non- restricted meets (over 500 each year—fun-flys, local, state and Official Rule Book included with all AMA memberships. This regional meets, and record trials), to establish national and inter­ manual details the specifications by which different types of national records, to compete on U.S. teams in World Champion­ models are built and flown and clarifies most of the specialized ships (two held per year). model aviation terms—a real aid to understanding model maga­ zine reporting. Special Help for Youth Members: Membership fee. with full competition privileges, eligibility for AMA scholarships, only Super Decal Sheet—three different 4" x 9" sets. AMA wings, $2.00 for either Juniors (up to 15) or Seniors (15 thru 18). FAI emblems. (Does not include magazine subscription—cost with magazine subscription only $5.00.) *The Academy of Model Aeronautics—a non-profit organization, organized in 1936; guided by regional officers elected from among the membership. National headquarters is in Washington, TO JOIN AMA USE THE FORM BELOW: AMA membership D.C. AMA members have privileges in other organizations: ends each year on December 31, regardless of the date a mem­ National Miniature Pylon Racing Association (NMPRA) open bership application is received. Late-year membership policy is as only to AMA members. Membership in the Nat'l. Free Flight follows: those who apply between August 1 and September 30 Society (NFFS) is $1.00 less to AMA members. All AMA mem­ pay full one year rate, but will receive half-year credit toward bers are automatically part of the National Aeronautic Associa­ the next year's membership they must, however, use this credit tion (NAA) and the Federation Aeronautique Internationale by July 1 of the next year; those who apply between October 1 (FAI); may become voting members of N AA—with other special and December 31 pay full one year rate and receive full member­ benefits-for half price, and may obtain an FAI sporting license ship for the following year, plus whatever days of membership for international competition. remain in year of application.

Member of chartered dub? APPLICATION-1972 A.M.A. MEMBERSHIP Important-write in club name here Academy of Model Aeronautics, 806 Fifteenth St., N.W., Wash., D.C. 20005

FOR THOSE: 19 OR OVER BY JULY 1, 1972 FOR THOSE NOT 19 BY JULY 1, 1972-C/rec* One Only! Includes all membership and competition privileges-and FILL IN DATE OF BIRTH Mo.. -D a y . .Y r. American Aircraft Modeler subscription. □ JUNIOR OR SENIOR-No magazine ...... S2.00 Includes all membership and competition privileges- □ OPEN ...... $10.00 except American Aircraft Modeler subscription. DNew DRenewal (number. .) □ SAME AS ABOVE—with subscription ...... $5.00

1972 Membership expires Dec. 31, 1972

Name H Q use o n ly

Address

City, State Z ip

The MODEL BUILDER 1 f r o m B i l l /liorffcrop's tv o r f c f r c n c H . . . # It is not our intention to use this the model dealers, who without the BACKFIRE, PHOTOG RAVI EWER, column from month to month for the urging of a publicity brochure (which PYLON, The MODEL BUILDER’S purpose of relating our own experiences, has finally been mailed), searched us out CLASSROOM, and FREE FLIGHT. in or out of the hobby. The only ex­ to place standing orders for so many Their content is pretty well explained ception will be in a case where the copies per month, and have since in­ by the title, but we mention them for experience, directly or indirectly, has creased the quantities (!); to the con­ tw o reasons. some bearing on a point we're trying to tributors ol articles and photographs who First, these leatures are a part of make editorially. have worked extra hard and extra hours what we promised would appear with- . . .That is, except fust this one time, to help us meet those first, most difficult ihe pages of The MODEL BUILDER, honest! deadlines; and very specifically to the and we're bragging just a little bit about Once and for all, we must say to all of advertisers, those with us now and those the fact that we've gotten them on you who have shown faith in our efforts who arc joining soon, because without their way so soon. The others, plus to launch this publication. . .to our many them it simply doesn’t happen! To all of more that were not previously mention­ friends and acquaintances who plunked you. . .THANKS! THANKS! THANKS!! ed, will appear soon. down their subscription money to The * * * Secondly, we wish to relieve your MODEL BUILDER, sight unseen, when In this issue you will find the first ol mind if you're beginning to think the some new monthly features; namely we first introduced it at the Nationals; to editor is going to have his fingers in all the pies. It ain't so! Beginning next month, the PYLON and FREE FLIGHT The Mo d e l B u i l d e r columns will be handled by two very capable contributing editors who arc November 1971 volume 1, number 2 already at work on the December issue. Cover: Sopwith Tabloid, winner of 1914 SchniederTrophy races, built to I 1/2" scale by Fernando Ramos, Villa Park, Ca. Power is 1,5cc Mills diesel. Scene is Lake * * # Elsinore in souther California. Photo by Bill Northrop. We had some most interesting visitors INDEX · as a follow-up to the World Champion­ ships. FEATURES ARTICLES First, there was Boh Young, one of Workbench 2 Nancy 8 the competitors from Australia, who Backfire 6 World Champs 14 stopped by on his way home. Bob is Photograviewer 12 L.S.F. Tournament 21 proprietor of Silvertone Electronics, Pylon 26 Peanut Scale 23 manufacturer of the Silvertone Mark VII Classroom 29 Bi-Prentice 35 proportional radio. The system isoffered Free-Flight 30 Turnaround Pulley 36 with Orbit PS-3 or PS-4 servo mechanics, and since O rbit’s factory is only a Subscriptions $5.00 per year, $9.00 two Wm C. Northrop, Jr. - Editor/Publisher stone’s throw away, . . years. Single copies 50 cents. Add $ 1.50 Anita Northrop - General Manager We had never realized the full impact for postage per year outside of U.S. and Bobbie Tyler - Secretary of living south of the equator until Canada (Except APO) Wm. Prince - Circulation noting the power switch on the Silver- C.R. Brown - Subscriptions Copywrite 1971 The MODEL BUILDER. tone transmitter. Up is OFF, down is All rights reserved. Reproductions with­ out permission prohibited. ON! Do you have a better explanation? Published Monthly by The MODEL Next to appear were some delightful Application to mail at second class postage BUILDER Magazine, 12552 Del Rey Dr., people who we e, in e feet, reciprocating. rates is pending at Santa Ana, California. Santa Ana, Calif. 92705. Phone (714) Following the World Championships in 544-1321 Bremen, Germany, Maynard Hill and I 2 The MODEL BUILDER took a fast tour which included the Graupner factory in Kirkheim, and the home/office of Flug Modcll-Technik, in Baden-Baden. Flug Modcll-Technik is Germany’s leading model magazine, deal­ ing mainly with radio control. The editor/publishcr is Alfred Ledertheil, who like someone else we know, is currently producing the magazine from his home, in partnership with his wife. To tie the whole thing together, Alfred and Betty Ledertheil’s daughter is Monica, and she happens to be the wife of one Jerry Nelson, former U.S. R/C World Champs team member, founder of R/C Goodyear or Formula I pylon racing, and now proprietor of Nelson Hazel Sig'sClipped Wing Cub, which she and husband Glen flew from Montezuma, Iowa, home of Model Products. Sig Mfg. Co., to the World Championships.Sitting beside it, in the hanger at Doylestown Airport is With Monica as tour guide, the Sig produced model, available in kit form. Model was demonstrated by Maxey Hester during airshow. Ledertheils have been seeing the U.S., newsletter editor, or even just a secretary “ I had a fly-away yesterday. Radio following the 1971 World Champion­ who is willing to write a letter about quit." ships, and luckily for us, we were in­ your club’s activities once in a while, “ That’s too bad!" cluded on their must-stop-and-visit list. please ask him (her) to put us on his “ No, that’s not bad, the plane landed Fortunately, the second spare bedroom (her) communication list. in a nudist camp.” had not yet been taken over by The While we’re asking favors, here’s one "Oh yeah! That’s good!" MODEL BUILDER. we’d really appreciate. You've heard it "No, that’s bad. An armed guard The up-shot o f all this should be of before and you’ll undoubtedly hear it brought it to me at the gale.” special interest to many of our readers. again. When you're talking to anyone "O h .. .that’s too bad." We have arranged with Mr. Ledertheil even remotely connected with one of “No, that was good. The only thing to make available, through The MODEL our advertisers, tell ’em you read about she was wearing was the gun!" BUILDER, full size plans from many of their product in The MODEL BUILDER Sorry about that, but what brought the fine construction articles featured . . .even if you didn’t read about it in it on was a report concerning the latest in Flug Modell-Technik. As with MB MB, tell ’em you did anyhow. What’s a good and bad activities between the FCC Plans Service, the construction article is little white lie between friends? and AMA. It goes like this: * * * included with each plan, and in most In November 1969 the FCC proposed cases the whole issue is included. BULLETIN BOARD the mutual sharing of the five frequencies We anticipated your question. Al­ Something we read in the latest AMA on 72-76 MFIZ for all types o f models. though the plans are very thorough, you release inspired the following script: That was bad. may desire a translation of the article for additional information. This we will make available for an extra charge. Flowever, a glossary of most common words appearing on the plans will be in­ cluded at no extra cost, and this should suffice. Over 100 airplanes and about 30 ship models are included in the complete list of plans. In aircraft, there are many glider designs, ranging from 8 to 16 foot wingspan, powered scale, sport, and stunt ships, deltas, seaplanes and several novelty designs. Ship models are scale power and sail, both for R/C and shelf. From time to time, and as space permits, we will reproduce a sample plan to give you an idea o f what is offered. Generally, the cost will run about the same as or a little higher than our own plans service items. * * * REQUESTS We have sent out post-cards to as many club newsletter editors as we can The prototype "Big John" as it appeared shortly after completion in 1963. Ship was simplified get addresses for, asking to be put on the test model for final design that was published in RC MODELER magazine. Plans are being re­ subscription list. If your club has a drawn and w ill be available soon. After that, watch for ..... "The F.L.Y.” !!

The MODEL BUILDER 3 Kraft display in the Exhibition Tent, which was open to all comers "Postman’s Holiday." Jim Whitley of PROLINE fame, and contestant during week of the World Championships in Doylestown, Pa. USA. at Doylestown, takes time between flights for public relations. Because there were so many objec­ In effect, there are now seven fre­ Airfield, about 17 miles north of Bakers­ tions, particularly from model aircraft quencies in the 72-76 band for aircraft field, Cal. This meet is co-sponsored by users who were basically responsible lor model use. In areas where car and boat five west coast clubs, North Bay and our having the Citizen’s Band usage in activity is strong, the two new fre­ South Bay Soaring Societies of the San the first place, the AMA convinced the quencies, 72.16 and 73.32, and the Francisco area, the San Fernando Valley FCC to issue a modified proposal in existing frequency 72.96, would have to Silent Flyers, Harbor Soaring Society and June 1970. That was good. be used with a certain degree of caution. the Torrey Pines Gulls. The clubs will The modification proposed leserving However, in areas of negligible car and each select and run the event of their three frequencies exclusively for aircraft, boat activity, all seven could be used in choice, each based on AMA proposed plus two for anything but aircraft, plus relative safety. When you consider the flying tasks. Contest Director is Bob two more to be shared by all types. That fact that modelers on the 27 and 50-54 Hahn, 1866 Chateau, Anaheim, Cal. was sorta bad also. MHZ bands have been sharing all along, 92804.The Ramada Inn on Pierce Road, A further modification by the FCC it doesn’t seem too bad. . .and that’s Bakersfield, will be the gathering spot. under AMA urging, has now been good. Two other events on our own calendar accepted by the AMA, and will become It should go without saying that the arc both taking place at Sepulveda Basin; official on November 15, 1971. 27 and 50-54 MHZ bands remain un­ the 5th Annual Northrop Flying Wing Four frequencies are reserved ex­ changed under the new regulation. contest on November 21, and the 3rd clusively for model aircraft: 72.08, * * * Annual “ Jumbo Rubber Scale” meet 72.24, 72.40, 75.64. The second North-South Challenge for 48 inch minimum span rubber Three frequencies are to be shared Meet for R/C sailplanes has been set for powered scale models. by all types: 72.16, 72.32, 72.96. January 22 and 23, 1972 at Famoso * * *

\

Dieter Schluter demonstrated his fabulous helicopter during the Latest product (probably not, by now) to come from John Tatone is World Champs. See "Over the Counter" for more details. this exhaust manifold for .45 to .80 engines. Great for scale.

4 The MODEL BUILDER Latest modification to the Murphy muffler is New cylinder and crankcase packs for small scale models; rubber, CO 2 , or gas, fro m W illiam s removable rubber sleeve for easy replacement. Bros. Comes in 5, 7, 9 cylinder for 3/8, 1/2, 3/4 inch scale. Molded of tough, light styrene.

BOO-BOO DEPARTMENT Arnold, Maryland 21012, is available at $56.95; and the powerful revised rear Bob Francis turns out some nice $4.00 per copy. The annual, written by rotary 61, with new throttle $92.95. fiberglass bodied aircraft kits, but the John Tegler, includes over 400 photo­ The latter should be especially great for plane that Gary Korpi and Luke Roy are graphs, complete coverage of all the heavy FAI scale ships, where the limit holding on page 12 in our first issue was races, current records, point standings, is still 10 (.61 cu. in.) displacement. not built from one of them. The plane and a complete photographic and written * * * is a K & K Ballerina, which is also a nice directory o f all pilots and planes that While we’re on engines, here’s still fiberglass bodied aircraft kit. Our apolo­ were active during the season. another item from the undisputed gies to both of the Ken Griggs’, father It should be noted that the annual champion o f the “ Product-a-month” club, and son, and you too, Gary and Luke. covers the racing season of the complete John Tatone. This month it’s an exhaust * * * previous year. In other words, the 1971 manifold for .45 to .80 displacement OVER THE COUNTER Annual is all about the 1970 season. engines, Catalog No. EM-S, price $5.95. We mention in this month’s World Annuals for 1970 and 1969 (covering This manifold was designed primarily R/C Champs report that Mr. Kavan is not 1969 and 1968) arc being offered with for scale models where the usual tight involved in the manufacture or distribu­ purchase o f the 1971 edition for $2.00 cowling calls for something special to tion o f those great Schluler R/C heli­ and $ 1.00 respectively.. .all three books collect and dispense exhaust cases and copters. As far as U.S., Great Britain, for $7.00. residue. It fits particularly well in Sig’s New Zealand, and Australian modelers 4* 4· 4* new Ryan-STA. are concerned, the guy you contact is Following the successful showing of As might be expected, the manifold Dale Willoughby, 14695 Candeda Place, H.P. engines at the World Champs (second is cast in aluminum, and has two exhaust Tustin, Cal. 92680, phone 714-838-9738. place Matt, and 7 others out of the first tubes to which special rubber tubing (two Dale is exclusive rep for Dieter 25) we checked with jerry Nelson of 8-1/2 inch lengths included) may be Schluter in the countries listed, and in Nelson Model Products, who imports attached for carrying all the “ schlock” addition to stocking the beautifully them for sale in this country. A large out of the cowling. A mounting strap, machined drive kits (transmission, shafts, shipment of engines has just arrived, and hardened stainless steel bolts, and a rotor assemblies, etc.) made only by will list as follows; Front rotary 61 with primer fitting are also included in the Schluter, he is also producing parts for muffler, $84.95;racing .40, $59.95 (now package. For special cases, where installa- kits and spares. This includes fiberglass legal in AMA pylon racing); pattern .40 Continued on page 34 fuselages, rotor blade kits, landing gears, etc. Write to him for prices on kits, parts, plans, instructions, etc. Incidental­ ly, a complete kit is $500, the drive kit $375. The price may seem high, but the quality is excellent, and once you see, and hear one of these choppers in action, it ’ll be hard to get out of-your mind. See his ad elsewhere in this issue. By the way, after ten years in the promotion, importing and distributing of R/C gliders, Dale is cleaning the slate entirely to make way for the helicopter business. As of the 15th of October, Willoughby Enterprises became Windspiel Models, 3704 Montgomery Drive, Santa Rosa, Cal. 95404. The name behind the business in Santa Rosa is Pete Bechtel. Pete plans to expand this line as well as to add some accessory items. * * * The “ International 1971 Air Racing Annual” ; published by the United States Sig’s Glen Sigafoose and VK's Vern Krehbiel talk it over in Sig's booth at the World Champs. Air Racing Association, Rt. 5, Box 287, Both companies are strong on scale designs that fly well. Others are turning in the same direction.

The MODEL BUILDER 5 BACKFIRE !!

CONGRATULATIONS “ Dear Bill, “ Best wishes for a successful magazine.” "Dear Bill and Anita:” Noticed a new magazine yesterday on Lt. Col. Nick Stanislo Congratulations on an outstanding the magazine rack o f one of Tulsa’s East Point, Ga. first issue!! We knew you would put out hobby shops. What a good surprise to Thanks to subscriber Number One! a literate model magazine, but were see you the editor and publisher of same. * * * delighted to see what a beautiful pro­ Congratulations on the beginning and duction job you’ve done. Best picture best for all subsequent issues. CONFIRMATION quality we’ve seen! Keep it up!” I’m very pleased to see you back in “ Dear Bill, )ohn & Laurie Converse, Vortex print after all the many months of You’re nuts!!!" Santa Barbara, Calif. absence. It was a dismal day when the Ed Shipc, Vortex announcement was made in M.A.N. that Santa Barbara, Calif. “ Bill and Anita” you were departing. Your philosophies It takes one ...... Congratulations, the first issue looks concerning and attitudes toward this * * * great! hobby (business to you, now) of ours Bill Hannon so coincided with mine that it was with PEANUTS SI! Escondido, Calif. a sense of loss I read your intent to leave “ A point o f interest: I subscribed the writing game. because o f the Peanut Scale plans, I’m sure you will make a grand success because the interest in Peanut Scale is “ Dear Bill: of this magazine. growing. Perhaps a point of interest can Thank you very much for the first William Salnikov, AMA 308 he viewed as good advice. Keep it up!” edition copy of The MODEL BUILDER, Coweta, Oklahoma Leonard Goss and mucho congratulations. It’s a Mechanicsburg, Penna. beautiful job from concept to execution” Thanks Bill. Obviously you 're a man of Point noted. .. affirmative. Paul Runge, Ace Radio Control excellent taste. Higginsville, Mo. * * *

“ Hey, Cliff!...Are you SURE you wound that rudder escapement?" PHOTO BY EDITOR

6 The MODEL BUILDER PROLINE WINS 1ST PLACE IN E 1 I D V I A A E F T ' n Both Nationals Γ · ^ % · 1 · mm L V I I f T lE t I and Internationals

PROLINES COST MORE. THEY SHOULD. IT’S A SIMPLE MATTER OF QUALITY. PERFORMANCE AND RELIABILITY.

FOR THE EASY WINNING T O U C H . . . Write for our new 1972 catalog. Free! Dealer inquiries invited. P.O. Box 7733, Phoenix, Arizona 85011 (602) 266-5471

Here’s the system the winners use! Here's the winning team! Team of Telford & Violett

SCALE - SI! haps my [subscription order] will indi­ gliders. We hope you can manage to “ I like your idea of emphasizing scale. cate faith in your future. Good Luck.” maintain a page or two each month for I would like to see you bring out some jerry Cole us gliders guys...” o f the ideas that were in the Sig magazine Vestal, N.Y. Art Hemler edited by Larry Conover - fun ideas in Thanks for your wishes and subscription, modeling, such as unorthodox models jerry. To me, a real modeler can de­ and unorthodox ideas (such as combat rive as much pleasure from a . 60powered EVERYTHING SI! using profile scale fighters). Best wishes R/C ship as he can from a A/2 Nordic or “ Am interested in Standoff Scale, from your NFFS score sheet runner—” an indoor paper stick job. Even if he R/C Soaring, electronic articles. Martin Schindler doesn 't actively indulge in all phases o f Have never seen anything on R/C Vienna, Va. modeling, he at least wants to know and STOL, might be interesting. Also, how understand them, and holds equal respect about a car trailer to carry R/C to field.” Don Swinehart "Dear Bill: for each type. Elyria, Ohio It’s good to see you back in the “Good luck. Hope you put out a great writing end of the hobby again. I’ve magazine. Lots o f scale.. .please.” When back east, / built a trailer on a missed your commentary. Bert Ayers small chassis purchased from Sears, on Your first issue of The MODEL Carson, Calif. sale for under $70.00. It worked great BUILDER looks like a winner. I hope with my Austin Healey 3000. Everyone you will continue the emphasis on Scale. called it "Northrop 's White Coffin." If I am primarily R/C oriented myself, but GLIDERS-SI! / had to do it over again, Ed hinge the I really enjoy reading about free flight “ Enjoyed your first issue! My son and sides so they would swing up rather and rubber scale as well. I even plan to I are particularly interested in R/C than lifting the top... build a couple of indoor rubber jobs

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DANCE WITH NANCY

This scale-like R/C soarer was designed to be quick and easy to build, yet maintain pleasing lines. The objec­ tives were accomplished. . .with a bonus thrown in. . .its flying capabilities are above average. BY JACK ELEM

PHOTOS BY EDITOR

• Nancy is a bird "hatched” out of myself—reversed controls and augured and plans I decided to attempt to design sheer necessity. As any of my friends in it in smack dab on the white divider line and build my own, with these criteria; The Harbor Soaring Society (of which on the highway below the cliff. Most easy and straight forward to build, I’m a proud member) will tell you, my people would have been smart enough pleasing lines that would hopefully lack of skill and confidence could set the to tackle a Nordic type trainer next, but resemble a full size sailplane, clean and flying of R/C sailplanes back twenty not old Hot Thumb. We had to try a fast for good penetration when needed, years. fiberglass Phoebus. Beautiful and fast, able to be flown slow for light lift, My first attempt was my pal Bob but any lack of talent on the stick and and most importantly, forgiving of some Hahn’s design, "L il-T ” , and it flew great you had a problem. of the impossible positions that only I until I stalled it out coming back toward After looking long and hard at kits could put it into without radical stalls

8 The MODEL BUILDER PAGE 48 FULL SIZE PLANS AVAILABLE - SEE

and falling o ff on one wing. Nancy “ flew right o ff the board" (how’s that for an original saying). She has done all I could ask as a nice docile trainer for me, but little did I know her real potential, until in the expert hands of my friend john Donelson. John flew her to 4th place in Standard Class at this year’s Nationals in Chicago and then a few weeks later placed 4th in Precision, 2nd in Duration, and 3rd Overall in “ The Big One” —The League of Silent Flight Soaring Tournament at Livermore. Nancy turned out to be quite a dancer with the right partner. I’ve been happily surprised by a few people asking for plans and in particular The MODEL BUILDER, so here you go. Nancy is covered in Monokotewith acolor scheme for competition flying. White for visibility on the ground and against blue sky; red on one tip. blue on the other for distance and against clouds.

The MODEL BUILDER 9 Have you ever seen a more natural portrait of "THE CONTENTED MODELER" than this? Photo The glider flying expert who discovered Nancy's by (Mrs.) Ty nee Vidal shows Nancy's designer (and father). Jack Elem, working on "E l Tabasco," competition ability, John Donelson. a rubber speed job. Flightmasters are reviving this interesting category with several contests. Hopefully the plans are more or less for the nose blocks, go ahead. You may The original Nancy was built with a sell explanatory, however a lew sugges­ not want to make the soldered brass one-piece wing, in which case dihedral tions. The airfoil, wing and tail areas, rudder and elevator horns. Use conven­ braces B-l and 2 are used. If your nose and tail moments were designed tional nylon but make certain you have transportation size is limited, build the with helpful counsel from Bob Hahn and plenty o f throw. Retain the angle of wing in two pieces, using 5/32” music John Donelson, both famous as designers, incidence shown for the wing, and zero wire bent to the same angle as B -l, and builders, and winning flyers, so stick to for the stab. Minimum dihedral was used brass or fiberglass tubing. these. If you want to change wing tip without loss of agility in turns; loo much Regarding the canopy, it can make or shape or use your own particular shape detracts from a sailplane’s appearance. break the beauty of your ship. The plans show how a Flitcglas Phoebus can­ opy which we happened to have (re­ member glider number two?) however, Francis Products has one for their Cirrus which is beautiful. Large Sig or Du-Bro canopies will work fine also, take your pick, but get the canopy before you start carving the nose area, then you can blend the shapes of both more accurately to your taste. Try and use care and keep the beautiful compound curve in mind when trimming the canopy. Leave at least 1/2” to 3/4” oversize for ease of holding down for epoxying to the canopy frame. Build the frame in place, using Saran Wrap between the frame and cockpit area, and use the epoxy sparingly. Be sure and wash the canopy with soap and water, then clean it with rubbing alcohol and carefully scratch with a small blade the fine line where the canopy meets the frame. Masking tape will hold it in place As indicated on the plans, here is the installation of the "Ancient Bonner Servos" in the luggage while the xy sets. compartment. The "Band-A id" holds the front end of the canopy in place, a dowel at the aft end. The whole bird is covered with Super

10 The MODEL BUILDER MonoKote. After covering the wing, twist the outer portion of each panel to get 3/8” washout, and while holding in this position, iron out the wrinkles. This locks the twist in place. Another tip, and you'll be glad when your really up there, use dark blue or black on all under surfaces of the wing and tail. Sounds bad, but you don’t notice it when the plane’s on the ground, however in the air it's really visual. Use Celastic or fiberglass to reinforce the nose and front of fuselage as shown. The receiver should be installed as indicated lor safely. This also allows you to use the weight of the servos and batteries up front, saving on extra ballast. Use Goldberg Snap-Links with 3/16" dowels or 3/8” hard, straight balsa per detail. The latter is more apt to save servos in bad "dorks.” My 18 year old (for whom the glider is named) and I will be flattered in case you decide to “ dance with Nancy” and happy to answer your questions. The address is 601 Lemon Hill Terrace, John heaves Nancy off the cliffs at Torrey Pines. A very popular spot for slope soaring of both R/C and full size gliders, this day was almost dead calm. For the results, see photo below. Fullerton, California 92632

We're not really sure the air was THAT dead. There just happened to be some "100 percent" sun bathers on the beach far below, and Nancy just happened to lose all lift. John had lots of help making the recovery, including expert R/C soarer, Kelly Pike.

The MODEL BUILDER 11 A play on the old word "rotogravure" and it's to be just th a t.. .pictures of model airplanes. . .all types.

Here’s the Ryan doing its thing. This photo could easily pass for one Another scale job from Delaware, this one the Curtiss Wright Pusher, of a full size aircraft. There’s nothing to give it away. span 75", O.S. 30! Three are flying in club. Lands at 12 mph.

12 The MODEL BUILDER This photo dates back a couple of years. Taken by Dick Tichner, it's Mike Tanny's PT 13D, built from modified Sterling Kit.

Still another scale effort by Bob Karlsson. This 1-1/2 inch scale Hanno Prettner, 4th placer in the World Champs, doing a little ski Corsair, O.S. 80, has homemade rotating retracts. Look out, Platt! flying in northern Italy at 14°F. Pass the hot cocoa!!!

Another view of our cover model, Sopwith Tabloid, as built by Beautiful Etrich Taube, built and realistically flown by Mel Ford at Fernando Ramos. Aircraft was Schnieder Trophy winner in 1914. Scalemaster’s Annual. Rudder, warp elevator, and Max 30 power.

The MODEL BUILDER 13 ■'D 0' ^ ; i Τ» Λ ·

THE BIG DO AT PHOTOS BY HAROLD BRINK, BILL FUORI, BILL NORTHROP The rain hesitated. . .a low, misty I ceiling filtered the sun. . .the wind I sighed to a halt. . .and contestants I from 22 nations took advantage of |

• R/C’s greatest show on earth, the World Aerobatic Championships, has concluded its seventh bi-annual competi­ LIECHTENSTEIN Λ ·νν-. tion, held in the United States for the L( >ND( ^N_ first time, and here we are with the world’s biggest dilemma...how to tell LO> ANGELES 25<μ «. you about it! a 'I'ENUAuLN As a magazine editor, we should have DERLIN λ°('5 mi been there with reams of note paper, caret Lilly observing and recording each and every detail, so that we could come PARIS StV-J wi back and lay the whole thing on you, from soup to nuts. Well, it just ain’t SEOUL__ 7I( '4 mi going to happen that way. L>ELFA3T 3I5l' m, First of all, an affair such as this is like a three...no, more like a five or six OSLO 5d20mi ring circus, and each ring is a story in itself. There is a story at each flight line, TOKYO 074( >ui I a story in the tabulating tent, in AMA VIENNA A'Uhjm, Headquarters, in the processing hangar, I in the manufacturer's exposition area. To do the job right you’d have to be everywhere at once. Secondly, this writer was again privileged, as was the case in Bremen, Germany two years ago, to participate MEXICO CITY LOIIm, in the World Championships as one of the ten judges. We use the word "privi­ BUDAPEST 3871 mi leged,” because although we worked BRUSSELS ΛοΙΟμ. hard all day, each day of the contest, our job put us right where the action was, with the best view possible. We DOME__ 4; 81 rubbed elbows with all of the 60 competitors, representing the cream of DRI3DANE R/C aerobatic fliers from 22 countries. Others worked as hard, or harder, worked longer hours, saw very little o f the fly ­ ing, and received very little recognition. As we thought about how to relate the World Championship story, it dawned

Just in case any of our foreign visitors became lost on the back roads of Pennsylvania.

14 The MODEL BUILDER the pauseDOYLESTOWN to fly in the Seventh BY BILL NORTHROP Radio Control Aerobatic World !Championships. Here's the story as we saw it from a front row seat.

on us how much repetition there could be in all the reports you will read. After all, every magazine reporter who was in attendance will have acquired the same statistics, the same list o f winners, the same list of equipment, the same round by round scores, and so forth. Well, they couldn’t be different, could they? Suddenly comes the dawn. Why not take advantage of our “ front row seat,” leave the harder job of reporting the overall picture to the other publications, and tell the story from the view point of a bleary-eyed judge? So it shall be. But just in case you don’t read any other modeling magazine, we will include the final results at the end o f the article. Our first official duty as judge was to attend the judges meeting Wednesday afternoon at the Holliday Inn, New Hope. This motel was the hub of all non-flying and social activity during the meet. All AMA officials and workers, contest officials, and most competitors stayed at the Holliday, commuting each day to the airport. The meeting, conducted by Contest Director Maynard Hill, was attended by the jury: John Patton, Ron Moulton, and Rudy Beck, of the USA, Great Britain, and Hungary, and the judges; (B) Tony Aarts-Thc Netherlands, (D) Walter Burger-Switzerland, (G) John Hartley-Great Britain, (J) Dave Henshaw- Canada, (C) Acke Johansson-Sweden, (E) Loris Kanneworff-ltaly, (A) Bill Northrop-USA, (H) Guy Revel-Mouroz- France, (I) Ritsuri Honda-Japan, and "The winnah and still Champeen of the W orld," Bruno Giezendanner, receiving trophy and congratulations from Sandy Pimenoff. Giezendanner, Wolfgang Matt, and Phil Kraft, Gen. Brooke Allen INAAI, Johnny Clemens (AMAI Rudy Beck (Hungarian Aero Club).

The MODEL BUILDER 15 The 1971 World Championship Team. USA. (I to r) Manager Dr. Jim Youngest contestant at 20, who finished 4th, Hanno Prettner from Edwards, Phil Kraft, Jim Whitley, and Ron Chidgey. Three Cheers! Austria. Plane is Rossi powered version of Matt's Super Star

The World Champion. Bruno Giezendanner, in a pensive mood while Another Super Star by Eduard Vandermeulen of Belgium. Design awaiting his turn to fly. Plane is basically same as 1969 winner. is very popular in Europe. A ll adapted from Bosch's Delphin.

Australia's Brian Green flew an O.S. 60R powered Dragon Fli, de­ Wolfgang Matt models the popular shoulder harness used by many of signed by Phil Kraft. He’s Australia's current R/C champion. the European fliers. Simprop radio slides into molded shell.

16 The MODEL BUILDER Frank Schwartz, "How d'you like that dark brown finish on Birch's . . . . And don't think for a moment that he didn't need it! Contest plane?" Rudy Black, "Man, that's not brown, it's FLESH colored." Manager Maynard Hill pauses to chat w ith official Hank Waechter.

Canada's Warren Hitchcox with his 24 hour-per-day coolie, Shirley. "TAKEO FF!!" Rhodesian Air Force Pilot, Rich Brand, South Africa, Warren placed his Webra-CRC (Orbit)-Firebird 18th. wakes up the judges for his flight. Manager Monte Malherbe helps. (F) Norbcrt Trumpfheller-Gcrmany. The at the Team Manager’s meeting, so that sufficcntly far away to avoid interference, letters preceding the names were the competitors and officials would be in we watched and scored two flights, one alphabetical designations each judge accord. each by Norm Page who had placed carried throughout the competition for We noted that the main departure in first and fourth at the 197 1 Nationals grouping purposes. Group ABCDE was agreement was usually a result o f the qualifying and finals respectively, and assigned to Flight Line I and Group fact that in some European countries by Ed “ The New Image” Izzo. FGHI j to Line 2 for the first two rounds. the rule book is not used as a guide to Though neither flier was requested For the last two rounds ABHIJ were at personal judgement but rather as the to do so, we’re sure they could have Line I and FGCED were at Line 2. It is final word. If the “final word” is not pui on perfect I0 point maneuver flights interesting to note, and keep it in mind there, such as just how long, in time or (Ahem). However, to train the judges, it as you read on, that four of Group distance, is the straight flight at the was better that they put up average ABCDE attended the first FAI Judges beginning and end o f each maneuver, performances. Norm was secretly school held in Germany in 1968, there is room for doubt. It makes you requested to and performed a beautiful possibly all five. In Group FGHIJ only slop and think when you realize that in Figure M, but with both stalls in the one attended the school. some countries, the mind is still not same direction as seen from the ground. Discussion at the meeting did not entirely free as we understand it here The “ Zero” maneuver sneaked past a few concern each maneuver in detail, but in the U.S.A. judges, but the lesson stuck well, we’re rather, was aimed at clarifying rules Thursday morning, while the compet­ sure. Actually, no competitor that we points particularly those pertaining to itors continued practicing at the contest judged pulled this goof throughout the awarding of the dreaded “ zero” . All site, the judges took o ff to the hinterlands contest, though some flipovers instead points discussed were brought up later for some practice scoring. At a field of stall turns did result in zeros.

The MODEL BUILDER 17 "Hmmm . . . let's see . . . back is up, forward Great Britian's Mike Birch tries to get his Pujo Stephansen, Norway, design winner with is down . . Penrod, Chidgey, and Edwards. mind off modeling while waiting to fly. Maximum-10. Note unusual xmitter position.

Bob Young, manufacturer of Australia's propo The James Bros., Kirkland and Whitley. Jim K. Hard luck contestant from South Korea, Tae radio, Silvertone, ready to fly his Super Star. was contender in 1969 World Champs, Bremen. Sik K im .. .crashed on this second round flight.

Champion of France for nine consecutive years, and winner of the US Prat holding for Luis Castaneda. Manager Dr. Elizondo at right. All Nats in 1968 (I), Pierre Marrot. Not well prepared this year. are members of the very popular team from Mexico. Ed and Norm kepi all of Iheir score range of 0 to 10 from the very first flight and score sheet clip boards were being sheets, each autographed with ihe name on. It is one of the points that was empha­ exchanged, we jotted down some notes and country of the judges. The practice sised in our school in Germany in 1968. on the score chart included in the session was great, but possibly more The idea that you should grade low at excellent official program book. For the flights and specific reviews of each score the beginning so that you leave room first round, fliers 01 through 31 flew sheet would have helped matters more. for a better maneuver later on is a bunch at Line I , and we made the following As it was, we had to return to the airport of hooey. How unfair that is to a contest­ random observations. We also graded each for the opening ceremonies and the ant who doesn’t happen to cooperate flier on a 0 to 100 overall basis. Compari­ beginning of competition at 2 PM. with the plan but performs some of his son of some of these with the tallied By 7 PM, the first round was completed best maneuvers in the first round. If a scores proved interesting. except for one flier at Line 1 and two certain contestant performs a particular We had not really judged Phil Kraft fliers at Line 2. And it had already been maneuver in the first round exactly as he since the Bremen World Champs. The established that Group ABCDE contained does in the fourth round, should it be nearest thing to it was casual observation the “ easy judges” and Group FGHIj the worth any more or any less in either in­ at the 1970 and 1971 Nationals. At the “ hard judges” . We'd like to comment on stance? A confident judge scores a man­ Nats we had already noticed that in com­ this. euver as he secs it, whether or not it’s the parison to his performance in Bremen, he It seems to be a popular belief that, in first round, whether or not it’s raining, had increased his speed and opened up general, easy judges are not as accurate as whether or not the wind’s blowing, the maneuvers. In this first round his hard judges. In our estimation, this is also whether or not it’s a fellow countryman flying indicated a complete change to a popular misconception. One thing that flying, and whether or not the pilot is a what you might call the “ European a judge with experience and confidence known champion. Style” . The round maneuvers were large in his ability will do is use the full scoring As each flier completed his landing and the straight ones covered a lot of

18 The MODEL BUILDER AMA's president, Johnny Clemens, shows a youngster how it's done. Gunter Hoppe of Germany flew this beautiful original design held by Delta Dart building session took place in Exhibition Tent. Herr Becker. Wing and tail tips like Rich Brand's Panzers.

Pete Peterson keeps a watchful eye on the air The Japanese team (I to r): a supporter, Kazuo Judges (I to r) Hartley, Trumpfheller, Revel- waves for any stray signals. Was 100% effective. Shimo, Yasufumi Sugawara, Masahiro Kato. Morouz, Honda, and Henshaw.Site I I.Rd. 1 & 2.

Caption for picture to left only. At training session, standing (I to r): Honda, Aarts. Johansson, Hartley, Henshaw, Northrop, Trumpfheller, Burger. Kneeling (I to r) Revel-Morouz, Kanneworff, demo flier Page. Standing center, Louise Izzo, Maynard Hill. territory. No more smokey rich “ put- pean Style” , which by any name, in our yet to our surprise, he recorded the high­ putting” around with tight little loops opinion, is the optimum in precision est mark of the contest, 7075. After the and quick rolls. Not only that, Phil aerobatics...large, open, round maneuvers competition was over, Phil Kraft good stood right near the judges and barked and long, horizon-to-horizon straight naturedly but with a certain amount of out the maneuver calls in no uncertain maneuvers. (By “ round” , we refer to the seriousness said, “ What have you got to terms. The whole performance exuded a Inside and Outside Loops, Double Immel- do to win? I changed to his style this feeling of confidence that showed up in man, Horizontal and Cuban Eights. The year and he changed to mine, and he the positiveness o f the maneuvers. We straights refer to the Slow Roll, Axial still got the highest score!” We could gave him an 82 on the “ Northrop Scale” Rolls, Four Point Rolls and Inverted only answer by saying, “ Now you know for this flight that turned out to be the Flight. The Top Hat and Figure M are sort what it’s like to fight the ‘Champion fourth highest score of the meet, 6845. of combinations, and the spin, is a spin, Image’.” It seems the other judges agreed. is a spin...) Also rated above Bruno Giezendanner In strange and paradoxical contrast Giezendanner, in a complete switch- (in our opinion) in the first round group was Bruno Giezendanner’s flight style around from 1969, flew slow and smokey that we judged was young Hanno Prettner this year. In Bremen, 1969, Bruno’s fly ­ rich, putting up rather small and undra- o f Austria. We gave him a 75, Hanno, ing was the peak example of the “ Euro­ matic figures. We graded him at 73 and along with Wolfgang Matt o f Liechten-

The MODEL BUILDER 19 Canadian fliers Ivan Kristensen and Ron Italian flier Giovanni Bettini tries American Chapman await their turns to fly. hot dog. These weren't the best at all. that ho completed in US, then won first place.

Strategy conference between Jim Edwards, A portion of the model hangar where fliers Third place trophy winner Otto Heithecker Don Coleman, Jim Whitley, and Lou Penrod. stored, repaired, and studied models. with his original design Snoopy.

"What makes it fly, Mr. Schluter?" "I'll be Hanno Prettner watches, while Bruno com­ US Soaring Team member John Nielsen sniffs d ______if I know, Mr. Martin, it just does!" ments to brother Emil Geizendanner. for thermal. He's importing Phoenix glider. stein, and Josef Wester of Germany, are To Brian Green of Australia went the not. A t Line I , Warren Hitchcox, one of all exponents of the fast, large style of dubious honor of being the only our Canadian friends who has judged at flying. contestant who completely skipped a our Nationals, took o ff into the very John Dible, one ol our cohorts from maneuver, the Horizontal Eight, in this gray and soggy air to finish up Round the 1968 FAI Judges School in Germany first round. One. With his ever faithful sidekick and a pilot for Irish Airlines, has a great Three fliers had engine stops: Kari (also wife) Shirley at his side, Warren tongue-in-cheek attitude toward the Lautala- Finland, Tore Paulson - Norway, pulled up for the Figure M and all but serious matter of world R/C pattern and Norbert Bertemes of Luxembourg. disappeared in the low overcast. The rest competition flying. We figure that it look Bcrtcmcs probably blew the plug, since of his maneuvers were done as close to some kind of “ cool” , plus a dash of the engine quit as he advanced throttle the deck as possible, but we still only saw mischieveness to stroll out on the runway, for takeoff and would not start again. He the lower portions o f the round figures. crank up his engine, and then hold the and Paulsen lost engine in three out of Judging by extrapolation is fun. You plane with one hand while with the other four rounds. Tough luck after traveling ought to try it some time. brushing up a little pile of dirt to nestle so far to compete. At Line 2, conditions were even worse, the nose-wheel up against so his model Friday morning, the flight line crews Guy Hardy o f France literally disappeared would stand still, “ unassisted” , prior to and judges were ready and willing into the overcast on the Figure M and the the takeoff manuever. promptly at 8 AM, but the weather was Continued on page 42

20 The MODEL BUILDER Standing (the "non-voters" I to r): Mauntz, Christian, Walters, Horten, Rempalski. Kneeling (the "old men", I to r): Baxter, Donelson, Steiner, Thacker, Brehm....And completely sat, but not that much older, Tournament Director Bob Andris. Sponsor's signs in background. THE L.S.F. SOAR -LYMPICS

BY LE GRAY.... The League of Silent Flight's 1971 annual Soaring Tournament became a test of how well modelers could fly in a stiff breeze. The League's Press and Public Information man presents a detailed and colorful word picture of the affair.

• Livermore, California, l September ...from Chicago, Illinois...from up and The first task on Saturday was 197 1 "Y j shudda been here yesteddy” down the western coast...from desert Precision. For a perfect 1,000 point ...the surfer’s lament...was a most heard valleys and mountain hamlets...the score, this event required a precise flight phrase at the League of Silent Flight diciples ol R/C soaring made their pilgrim­ time of 2 minutes from tow release to 197 1 RC Soaring Tournament. On age to Ted and Alice Nelson’s "Hum ­ touchdown, with the model coming to Friday, 27 August, the early morning mingbird Haven” , Livermore, California. rest within a center 16 by 33 foot area coastal fog and low clouds over “ Hum­ Two days, 28 and 29 August, had o f a scale runway. mingbird Haven” gliderport cleared to a been planned by Bob Andris Tourna­ Destruction landings, forfeiting air­ blue sky, warming by mid-day for good ment Director, and Curtis Christen, craft for points, were prohibited. Any thermal development. A gentle breeze Tournament Manager, to provide the model which shed parts or came to rest puffed and collapsed lowline drogue most challenging competition for R/C in an inverted position earned zero land­ ‘chutes, and provided the necessary bite soaring pilots o f any meet ever staged... ing score. Many excellent landings were for long graceful wings to attain good anywhere. And so they did provide... disrupted by an unfortunate wind just launch altitude. Ideal conditions for though not quite as planned. High winds at a critical time in touchdown. The America’s greatest R/C soaring competi­ added to the challenge as well as to the cheers o f encouragement from hundreds tion...one day early. problems. Towlines drifted...overlapped of spectators were often turned to a Late Friday evening, a high pressure and snarled. Whip-lash fouled winches collective “ aaah” o f disappointment system stabilized o ff the central Califor­ and turn-around rings. when fate cheated a pilot. But in spite nia coast. White marshmallow cloud puffs The winch line organization and of wind and despite gusts, precision built above mountain ridges. A steady techniques that, in 1970, had launched performance by skillful pilots earned airflow from coastal "high” to inland one sailplane every two minutes through­ several perfect 1,000 point scores. “ low” pressure centers was evident. out nine-hour days, and that in the first Numerous flyers scored in the 995 to Saturday morning dawned clear, bright hour on Saturday this year provided 990 point bracket, indicating a one or and windy...and so it was the next two tows for some fifty pilots, sometimes two second variance from the time days for some 120 registered contestants bogged to a complete stop. The patience, target but a perfect landing. Pilots with ...crystal clear, beautifully bright and and aplomb of Gerry Wolfram, Winch- flight times more than five seconds off, wantonly windy. master, and his crew of operators and plus or minus, or those with perfect From Walla Walla, Washington...from retrievers was a remarkable feat of times but less than on-target landings... Honolulu, Hawaii...from Amarillo, Texas reserved dignity. were in the “ also ran” category.

The MODEL BUILDER 21 Dr. Bob Chase, SSA Director, and son. Bill, w ith one of their original Marshall Watson, who is LSF Secretary, with his fiberglass fuselage, 12' · 4" designs. Structure follows full scale practices. scale Diamant. Note takeoff carpet, and winch foot switch.

I f 3 Λ

Paul Christian is almost completely hidden by Dan Pruss (Su-Pr-Line) and son hold Kurwi 33. Dr. Bill Lawrence with much modified, long- the beautiful J & R Kestrel. Dick Lemme, Dale Willoughby, Rolf McPherson. wing ' Bjorn.'* Nelson hangars in back. By the end of Task I on Saturday, Bay Soaring Society, set the course Brehm broke out on lop of a three-way two major problems were well defined. gates at 150 meters, consistent with the tie for fourth with 869 points. Jay was The use of drogue parachutes on winch rules proposal currently under review by also guiding a Graupner "Cirrus” . lines in the often fierce winds only the AMA. Each pilot was allowed a flight The wind, the dust devils, the snarled added to the problem of line d rill and time of five minutes to make a maximum winch lines and the frequency blockages tangle, and, secondly, heavy congestion number of laps. The course, layed cross- had taken their toll in time and in human on one or two frequencies demanded wind, required all legs to be flown endurance. By mid-afternoon, Task II a "single file” flight order for nearly downwind of the course markers. was completed, but at the experienced twenty percent o f the contestants. Pilots earning high scores planned rate of progress, the scheduled Task III, The first problem...tow line d rift and their flights based on two major Duration, would have lasted well into tangle...was eased before the start of considerations: first, look lor lift because evening. With the concurrence o f contest­ round two. Wolfram’s crew replaced all altitude equates to distance; and second, ants, Tournament Officials cancelled Task ‘chutes with simple "drag flags" that do not disipatc altitude by fighting drift III. The field was soon cleared, and all dropped quicker and straightcr after tow to track a specific line. George Steiner hands hurried o ff to nearby motels for release and had less tendency to twirl calculated best. the relaxation of a shower, the recreation and snarl while being retracted over rough Gaining near oul-of-sight altitude of a swim, the refreshment o f a long, terrain. immediately after tow release, Steiner’s cool liquid, and a bit o f rest from a The frequency problem was less Graupner “ Cirrus” started through the quick nap. susceptible to on-field correction. Where gates at a fantastic height, and with each The first day of competition in the possible, equipment was changed to ease lap drifted further downwind. Some LSF 197 1 RC Soaring Tournament was congestion, but few pilots had this allitudc/dislancc was given up to stay now history, but that special kind of flexibility. The frequency pile-up made in sight, but at the end of five minutes. history that becomes memories. Within the actual flight roster o f 103 contestants George had completed some 30 quarter hours, the agonies of field problems...of equivalent to more like 140 insofar as laps. A stellar performance, but hardly logistic snarls...of flying errors...of broken flight line operations were concerned. It a runaway. Other pilots were pressing models and panic repairs, were forgotten was obvious to officials and contestants the Steiner lead. At the end of the day, and the good things...the humorous... alike that major R/C sailplane contests standings in the Distance Task were the excitement...and fun came to fore. in the future must consider frequency posted. First place, George Steiner, 1,000 People and planes. That is what it was distribution...perhaps to the point of points. Flying to a close second was all about. Hours spent exchanging ideas... limited entry on each available spot. John Baxter and his Cirrus, 957 points. or lies...with a guy who until that Task II on Saturday was Distance. Young Paul Christian piloted his Cirrus morning had only been heard or read Task Director )oe Corr, of the North to a solid third with 9I4 points. Jay Continued on page 34

22 The MODEL BUILDER p y lo n

Starting a new column on the sport of racing aircraft. This month it's all contest reports, but in future issues, there will be moreon the hows and whys of constructing and flying pylon ships of all types.

• The National Midget Pylon Racing Association has decided to once again publish its own membership newsletter. This publication was discontinued when Ed Shipe, former editor, and long time shot gun for R/C Pylon racing in the U.S., retired from the job. Following a single release which was issued a few weeks ago, informing the membership of the new situation, the newsletter will be issued on a monthly basis starting in January 1972. Editor for the NMPRA Release is Bob Stock- well, 4000 Hayvenhurst Avenue, Encino, Calif. 91316. To quote Bob in this Oct­ ober issue; "A t a meeting of the F.A.S.T. Club, which speaks authoritatively for Southern California Pylon Racing, sev­ eral members put up the money out of pocket to produce this one issue o f our reborn Newsletter for 1971. Johnny Brodbeck ol K & B volunteered to take care of the distribution. Bror Faber, the So. Cal. V.P., arranged for the masthead and lor reproduction. This is the format that will be continued for 1972, when membership money, hopefully, w ill be available to continue it.” Since NMPRA election time is near, the newsletter includes campaign letters by various candidates for offices of President and District Vice Presidents. Also included is an account ol the first International Pylon Championships, which took place during the acrobatic Winners of the First International R/C Pylon Championships, the team of Bob Violett and competition in Doylestown. The report, Cliff Telford, receive the Sir ThomasSopwith trophy from Henry J. Nichols.Second and third place winners, Alan Mann and Tony Dowdeswell, both from Great Britain, look on.

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24 The MODEL BUILDER The MODEL BUILDER 25

Τ'* o j i 9 7 I / o ~ / / 0 o PHOTOS BY FUOOTAKAGI OK R -I. N NUTSHELL A IN D-VI... FOKKER also. od he-iw f h D I r t be to are VI D the of three-view good io tann uis Te ucs o the success of The fighter units. in more training little pilot a only and units, fighter and line numbers front in small alittle rather wasusedonly in VI D The built was fighters. Fokker I WW known common that modelers will ignore it be­ it have before. seen ignore cause somany they will modelers that common it seen never have I because subject two and a very maneuverable airplane airplane maneuverable very the a of faster and the two actually was VI D the less the well of one of ismodel a This • Published by Putnam and Company Company and Putnam World by First Published the Thetford. Owen and PeterGray of by War” Aircraft “German so not It’s Fokker. a obviously is that makesanairplane it and before modeled D VII over shadowed the D VI although although VI D the shadowed over VII D found on pages 102, 103, and 104, of of 104, and 103, 102, pages on found to it r fo high very be to have doesn't ship Scale Peanut a course, f O r kke o F a called be really could It one. rare a is subject 's th n o m This iie 16. h ol fut cn find can I fault only The 1962. Limited era!!! cam the in one catch to try just t u b ay, aw far look empennage. 1 r D the ote N One. inus M Tri-Plane The MODEL BUILDER The MODEL ojs ra t h Foke D Ano orrdo cakn e put- t n git s e gosr flugen-gestartern? grosser der us ifts g und tt u tt-p u p der cranken radio? r fo e nyon A . I V D kker o F the ith w great just go li rs le cakae n clnes wel, n poelr Hey Scut! o s bn ie zs suie " en ant vt iss vot t" n ia G reen "G stupider ziss hiren ben ist ho W chultz! S y e "H propeller and wheels, cylinders, and crankcase olded m Bros m illia W W ta,lk ayohr ic,js mse eoigfmu. Oeseto 11 y3b 3 ild it!! do will 36 by 3 by 1/16 sheet.Oneof . famous. missed becoming since,just others many like that, WW I BY WALT MOONEY. . .Another tiny gem from the "Peanut Vendor" This time, a little known fighter from from fighter known a little time, This Vendor" "Peanut the gemfrom tiny .Another . MOONEY. WALT BY pce te V a a ent Scale Peanut as a VI D the picked I nomto, poorp, n a and photograph, a Information, one. However the fuselage and tail of the of fuselage andtail the However one. tu ad h treve dent show doesn’t three-view the and strut the that fact isthe information the with rpae n i’ ti bae s hw in shown isbook. the brace in section I previous tail the Dr it’s the of and those to triplane similar were VI D asteel with wasbraced tail the says text ierl o h lwr ig s hw in as shown wing lower the to dihedral so tefl sizeaircraft. full the ason and fly in left hand circles about 2/3 the 2/3 about circles hand left in fly and the of surface bottom the that is soness note f o Worthy wing. the f o upper the surface on none is there ic., dihedral, addedI dihedral. wing thescale is intrue ih / lt ubr t ol sal and stall would it rubber flat Outdoors court. I/8 basketball with a of width a singleof consisting motor a with board dihedral of amount has aslight wing top thick­ in taper wings both that fact the op f /2 lt ubr I wud ROG would It rubber. flat 3/32 of loop scale has wing upper The plans. the The only intentional deviation from from deviation intentional only The nor m mdl lw ih of the ff o right flew model my Indoors UI clear to the ground, so a little down- down- little a so ground, the to in, spin a clear in results later or sooner This h mdl hw i te itrs used pictures the in shown model The em o fet h ido fyn charac­ flying indoor the affect to seem plansand does the not on in built shown 1-1/2 perfect beautiful (A spin then n tp ekn, u i cud e done. be could it but decking, top and thick 1/16” by 36” by 3’’ of sheet a If balsa. all is structure basic The thrust was used to cure the stall. This is This stall. the cure to used was thrust low. quite out pull and tailspin) turn block balsa for the nose, 1/32" sheet for sheet for 1/32" nose,the balsa for block to ma­ modeler the require would structural This terial. enough be would balsa strip to balsa, a sheetsingle effort the from sticks worth own his it felt builder teristics. the rudder and the fuselage the covering. top and rudder the rudder the for wood the down sand and etc. to block, nose thick the laminate system. standard old the much very is h cntuto ue o ti model this on used construction The Continued on page 34 page on Continued 23 Jack Stafford's Midget Mustang proves half a Winners at Los Alamitos. Standing (I to r); in front of Bertken. Kneeling (I to r): Owens stab is better than none. Result of mid air. Frey, Korpi, Brodbeck, Roy, Prather, Cdr Fred Breitling, and Upton. Photographer reflected West (Los AI Exec.), McCan, McCan, Stock well on screen of TV also won by Prather. which is more detailed than our brief ions, became FAI Pylon Racing's er than his 2:05.2 would indicate. Tony summary in the World Champs story, was WORLD CHAMPION as they continued Dowdeswell was one of the few who written by Chuck Smith, who was there to be unbeatable. They flew to win and finished all his races, which was good for with his brother Bob, a competitor in could easily have had a faster time than third place. Peter Pilsworth, the third the event. It goes as follows: their best o f 1:57.5. The other two USA member of the English team, crashed in “ Sixteen fliers from seven nations team members had bad luck, as Bob the third round. competed on Saturday, September 19, Smith blew a plug in the first round and As far as trends go, P-51 type designs in the first international competition Terry Prather nosed over on take-off in still dominate and retracts definitely for pylon racing. There were 2-1/2 hours the third round. Terry, however, turned make a winning difference. Eleven pilots of racing originally scheduled but fortun­ the fastest official time ever recorded in used the K & B .40 and five the Super- ately the contest manager allowed over FAI with a 1:53.6 and Bob had the tigre .40, which was surprising since an hour extra time so that four rounds second fastest lime of the meet with prototypes are allowed under FAI rules. of flying could be completed. As the re­ 1:56.8. The foreign teams learned a sults show, there was a sizeable differ­ lesson from the Americans when they The English provided a pleasant sur­ ence in speed and flying ability among discovered that the USA team was the prise when they announced that they the pilots which, unfortunately, produc­ only one with all its members on the tentatively plan to hold another world ed some uninteresting races for the many same frequency. championship for pylon racing in 1972 spectators who had gathered. There was It was obvious from the beginning in conjunction with the Scale World still much enthusiasm, however, among that England was going to be America’s Championships to be held in England. the foreign fliers who had come to see main competitor. Allen Mann, who was This will be before next year’s Nats, so just how fast the Americans 'really' are. the man behind the success of Ford’s the N.M.P.R.A. and A.M.A. must begin The team of Bob Violett and C liff GT-40 racing cars, was very fast and thinking now of the team selection pro­ Telford, our current National Champ­ ended up second. His plane looked fast­ gram which will be necessary.

Joe Stream looks a little pained as he steers A father-and-son team that gets to every race A study in relaxation under two strong out- around the pylons with Tad Sato's assistance. possible: Bill and Chuck Hebestreit, BIRDS. side influences. Bob Smith wins another one.

The MODEL BUILDER 27 Paul White's ST .15 powered K & K Ballerina QM pylon racer. Ship Another Paul White QM pylon ship. Francis Products P-51. Kit has weighs 3 lbs., has 306 sq. in. wing area, and flies in mid 90's. foam wing and glass fuselage. Wing area 304, ST .15, three pounds.

INTERNATIONAL ΓΑΙ PYLON RESULTS Place CONTESTANT Country Points Best Time 1. Telfor-Violett USA 16 1:57.5 2. Allen Mann England 16 2:05.2 3. Tony Dowdeswell England 13 2:28.2 4. Terry Prather USA 12 1:53.6 5. Bob Smith USA 10 1:56.8 6. G. Shaw Canada 10 2:17.7 7. B. Castaneda Mexico 9 2:48.9 8. R. Svenningsson Sweden 7 2:05.0 9. J. Sederholm Finland 7 2:58.2 10. Y. Murakami Japan 4 2:28.8 II. Peter Pilsworth England 4 2:37.5 12. B. Ball Canada 3 2:26.5 13. H.Bando Japan 2 2:25.7 14. M. Sierra Mexico 0 To give you an idea of the handy size of QM racers, here's Paul with two ships above. 14. L. Castaneda Mexico 0 14. T. Isobe Japan 0

Gary Korpi reports on the Western Bertken nosed Gary out for first place. Slates Pylon Championships in Tracy, Both were using McAllister mufflers. In­ Cal., September 25 and 26. The real cidentally, this was the peak in Jeff’s headline here would be the fact that Bob first year in racing as a pilot! Smith established a new Formula I nat­ The B.I.R.D.S. Club of Long Beach ional record by turning 1:30 even! This held its annual races at Los Alamitos means an average speed of 100 mph Naval Air Station on Sept. I 1-12. Acc­ around the l/4 mile course. Bob was ording to information furnished by his flying his Lee Custom K & B .40 pow­ Dad, Al, this had to be called Terry ered Miss DARA. Unfortunately Bob Prather’s contest: First in Formula I, could not tie this fantastic heat on to an first in FAI, and fastest time in Formula overall win because in landing the ship, I. And to add insult to injury, Terry also Bob again found proof that two trans­ won the raffle, a portable T.V. set! How mitters on the same frequency (one in greedy can you get! Jack Stafford’s P-51 FAI ship with Goldberg retracts and Murphy m uffler on K & B engine. the pits) don’t improve flying character­ Just before going to press, we received istics. the final 1971 standings in Formula I Looking at the situation from the The team of Gary Korpi and Luke for Southern California. In order of AMA Contest Board’s point of view, Roy was the only one of 46 entrants in placing, the lop ten arc: Terry Prather there are, at this time, many variations Formula I to have a perfect score, earn­ 327, Howard Nupen/Bror Faber 319, on the originally suggested rules. Each ing them the huge K & B trophy for George Killeen 315, Lee Frey 314, Roger active group has different ideas, but they first place. In FAI, the Korpi/Roy team, Owens 300, Dan McCan 294, Jack Hert- all seem to agree on one thing: KEEP IT flying a Francis Prod. Mustang with enstcin 287, Jack Stafford 284, Mike SIMPLE AND FOR THE MAJORITY. K & B .40, had the fastest heat, a new Bridges 277, and Whit Stockwcll 259. Asa national event, and one which AMA NMPRA record 1:53.6, which equalled * * * will no doubt eventually include in its the time made by Terry Prather at the Quarter midget racing continues to event roster, rules will have to be written International Championships. However, gain in popularity. We strongly urge all by the Board. The most satisfactory set the team lied with the B/S Racing Ass­ interested groups around the country to of rules for those concerned would come ociation team, and in the fly-off, Jeff organize into a national association. Continued on page 42

28 The MODEL BUILDER -fU Model B tti Idekr t CUcnoon

This column will cover everything from first grade through post-graduate, but not necessarily in that order... and the subjects will bridge all categories with one theme. . .model building. This month's class is conducted by BOB UPTON.

INSTALLING CANOPIES the canopy at its base so there is room Cabisil, mix up a batch of epoxy (Sig. 2 • Since most self-respecting modelers to work under the tape. A small diameter part works fine) and add Cabisil to it insist on attaching canopies to their length of wire makes a handy epoxy until the batch will "stand" on its own latest flying machines, the following applicator. Apply epoxy around the much like soft butler, or mix Epoxilite discussion will probably be of interest. canopy base sparingly and carefully to per instructions. You are going to have I have seen many a fine looking avoid any unwanted runs. to work fairly fast now (10 to 20 model detracted by poorly fitted slop­ You can either stop here with a clean minutes depending upon the room temp­ pily attached canopies. This is a shame, looking job or, if you arc a purist, you erature). The next important “ tool” you since most people are attracted first by can take it a few steps further. will need before starting is a finger bowl the cockpit before examining the rest of Applying a fillet to blend in the full of either alcohol or acetone to the model. fuselage to the canopy is a very nice smooth the fillet. There are a few tricks, and mostly a touch indeed. After the epoxy dries, Apply the fillet with your finger, lot of work to fitting a canopy properly. remove the tape or rubber bands and alternately using the alcohol to shape After detailing the cockpit to your mask off the canopy as follows: From and smooth fillet as you go until you liking, start by cutting out the canopy 3/16 to 1/4 of an inch above the base are completely around the canopy. The to roughly the contours of the top of o f the canopy, run a line with 1/4” alcohol retards the filler material slightly, the fuselage. Next, choose a full 10” by width masking tape around the canopy. which is a plus factor, since this gives 12” sheet o f medium weight sandpaper. This is your dimarcation line. Next, you more time to work. Run the epoxy Roll the sandpaper over the edge of your cover the canopy completely with up over the demaraction line (tape) but bench in both directions; this allows masking tape to protect it. Try not to keep it as thin as you can. The reason you to wrap the paper over the top of overlap the base line (1/4 tape) too much. you don’t want layers of tape on or near the fuselage without resultant sharp The reason will become apparent later. the demarcation line is that you don’t cracks or creases. Place the paper with Now use a piece o f 320 sandpaper want a thick ledge between the fillet and the corners aligned with the axis of the and rough up the canopy between the the canopy when you arc finished. Use fuselage (see sketch) approximately where base and the demarcation line so that the filler material sparingly and don’t you want the canopy. the filler material will adhere. You will put it where you don’t want it, because Now, hold the sandpaper tight against now need some Cabisil (white, fluffy it is very difficult to remove once it the fuselage and work the canopy back epoxy filler), or Sig Epoxilite. If you use Continued on page 46 and forth until the periphery makes total contact with the lop of the fuselage. You now have a perfect fit. Next and very important, drill a small hole towards the back o f the canopy to equalize the pressure. If you don’t, the canopy will buckle in the heat. Next, cross a pair of rubber bands or use masking tape over the top of the canopy completely around the fuselage to hold it in place while you epoxy it on (see sketch). I use blocks between the tape and the fuselage to keep the tape away from the edge of

The MODEL BUILDER 29 Beginning a new section on an old subject. . .in fact, this is where it all started. . .no strings, no wire, no radio. . .just turn it loose and hope it remembers everything it was supposed to do. . .

• We will start this column with a little won some trophies. Filteen years ago, I a 3-minute maximum, so a perfect round International flavor. The following report turned away from F/F to R/C. Recently, was 180 points and a perfect total was was written and sent to us by good I have been interested in flying R/C 1260 points. There were very weak ther­ friend Yoshiro Sato, who took our slope soaring gliders and thermal gliders. mals there from 9 AM to 1 PM, but “workbench" editorial photo. I do not intend to talk about my contestants made the best of it. FREE FLIGHT CONTEST IN JAPAN background, but there is a relationship Mr. Kobori (rubber) marked 1259 The Annual All-Japan Free Flight between F/F and R/C gliders. R/C points. Mr. Suzuki (rubber), 65 years Model Airplane Contest was held on thermal gliders arc very similar to F/F old but still active, placed 6lh. When I Oct. 3rd, sponsored by the J.M.A. (Japan gliders, so I went there and met many of saw him, I realized that I will be able to Model-airplane Association) which has a my old friends. They had all got old, I continue competing in model flying for position like the A.M.A. The contest had got old too, but I was one of the another quarter of a century. field was TAKIGAHARA, which is lo­ youngest 20 years ago, so their average I was most interested in seeing the cated beside Mt. Fuji; usually the place age must now be 45 years or so, I guess. FIC (power) section. Mr. Kibiki (who is used by the Japan Self Defense Few younger men joined, but even they placed 2nd) has been to Europe and Forces as a practice area. Unfortunately, must be in their thirties. We can not deny bought two MVVS (made in Czech) the skies were dull, but good enough lor the declining interest in F/F, but those diesel engines. He shared one of them running the contest. In fact, I had not who are still active are real model flying with Mr. Iwamura. Mr. Iwamura and Mr. seen a F/F contest for several years. I enthusiasts. Kibiki used about the same system and started making and flying models when I This F/F contest consisted of 3 parts- engines. Both the MVVS engines were was 10 years old. When I became 20 FIA (glider), FIB (rubber), and FIC powerful and just fit their propellers. years old, I joined in some contests and (power). All o f them flew 7 rounds, with The timer system was very complicated.

Winners of J.M.A. free fright contest. Guy on the left you should So you think you have flying site problems! This was one of seven know. He’s Mr. S. Enya, who makes a pretty good engine. starting pits; 3 for power, 2 for rubber, 2 for gliders.

30 The MODEL BUILDER PHOTOS BY YOSHIRO SATO says radio is complicated? ED). The The ED). complicated? is radio says system is European style, also. Mr. Mr. also. style, European is system (Who on degreesserve to asa works dethermalizer. timer another take-off, after o ff; after another 0.5 sec., the stabilizer stabilizer the sec., 0.5 another after ff; o h saiie t pp t p gi 45 again up it pop to stabilizer the minutes 1 (about /16”);3 upslightly pops slightly. rudder the works timer the step, h OE BUILDER MODEL The and 1st placed Kibiki Mr. and Iwamura isshut engine sec., the 0.5 another After first the sec. engine-run, 9 to 8 an After ytm hwn n et he pcue. h tblzr os pt 4 ere ord hr alizing. therm de r fo degrees 45 to up pops stabilizer the when released, is plane the r fte a inutes m three occurs step last The style uropean E his f o etails D pictures. r. three inne w next er in pow n his show launches system ura am Iw r. M . maai s ot te .. ih of aa, h hs fw few a has he t u b Japan, f o right W C.O. the f o sort is azaki om K r. M er t g a a ee5 yasof g. ilpae 8h. 8th placed till S age. f o years 58 mere a at go to years e nicknam is H turns. the in cranks Kayaba, r. M Sato, thor u a f o riend F s aaa t ,whc moeor esmas t ayaba." K tty u N " means less r o ore m hich w n, ote N Kayaba is red r Kmzk fe hs machine his flew Komazaki Mr. friend ge wt sc a opiae system. complicated a such with agree into got them of 3 or 2 samebut system, machines did a high-speed dive after after dive high-speed a did machines n epciey Bt lv i Kyoto). in live (Both respectively 2nd then glide to the left. My old intimate intimate old and My flight left. the circular to right glide a then on ff o take not do I think I stopped. engines their their result, Asa timer. the with trouble If I competed, I would have my machine machine havemy would I competed, I If oe te fir ue aot the about used fliers other Some sm all a m ount o f negative incidence fo r glide set-up. glide r fo incidence negative f o ount m a all sm a af eod t te udr satvtd te tb salwe a ed allow is stab the activated, is rudder the r fte a second half a t u o b A ur n pul- a bout8 o 9 seconds. 9 to 8 t u o ab at t u ll-o u p and rn tu F irst step in autom ated op eratio n is a slight b it o f rudder fo r glide glide r fo rudder f o it b slight a is n eratio op ated autom in step irst F a 3-1/2” pitch propeller, I guess. I think think guess. I I propeller, pitch 3-1/2” a ol d bte t ue lower-pitched a use to better do would 20,000 enginesat the ran Fliers popular. the prop’s pitch was too high; they they high; too was pitch prop’s the so people have to develop a better better a develop to have people so to 22,000 R.P.M., and they usually used usually they and R.P.M., 22,000 to control system are quite temperamental, temperamental, quite are system control method. stabilizer and rudder the rate, any At this way; I must admit that he placed 8th placed 8th he that admit must I way; this Super Tiger engines were the most most the were engines Tiger Super 31 Jack McCracken's beautiful green and yellow Gipsy Moth on the shore This little rubber powered Tiger Moth, built by Fernando Ramos, of Lake Elsinore. Ship flew realistically in R.O.W. meet. takes off after a run of about 11/2 inches. Cute as a bug!!! propeller. This is only my opinion. In of the wings. Mr. Isobe towed it at a mostly in the free-flight category. This power F/F, we have to improve many high speed, and the glider reached a high is truly modeling in the great tradition, points. altitude in a very short time. I guess the and we’re gathering material for future The results were as follows: altitude must have been 200 meters. articles. FIC (POWER) Our trial flights were invitations for First there was an R.O.W. meet at 18 fliers competed, highest total points F/F people to R/C thermal gliders. The Lake Elsinore and then came the big was I 131 (Mr. Iwamura); the average first All-japan R/C Thermal Glider Con­ annual contest on the first weekend in number of points of all the fliers was test was originally scheduled to be held October. Unfortunately, we had so much 774 points (the last-placing flier flew this fall, but we could not prepare for it, fun meeting the Flightmasters and re­ only 13 sec.). so we have re-scheduled it for next year, acquainting ourselves with F/F scale, FIB (RUBBER) and will send you a report. that we sort o f goofed on pictures and I am not quite sure about rubber models, See you again, Japanese F/F people!! information. Most of the shots were so I will jot down only the results. 13 In the meantime, join us in flying R/C strictly snapshot variety for personal fliers competed. Highest total points was thermal gliders. We will get good com­ pleasure, and our information was mostly I259 (Mr. Kobori), only I sec. short of panions in R/C, and the cause of good “ How did you do that?" instead of perfect. He got The Best Time Trophy. sportsmanship will be helped. “ Name and place, please.” The average number of points of all the * * * S orry.. .we’ll do better next time. fliers was 872. We’ve had the opportunity to join FIA (GLIDER) the North American Flightmasters during I could not believe their towing. I had a couple o f their contests this summer. ΓΗΕ JUNIOR JUNIOR never seen an FIA contest before; this This club, in case you don’t know, is By Bill Hannan was my first chance to see one. They totally dedicated to scale model airplanes, ran a few meters and then sometimes • Nearly everyone remembers the came back and ran again. I saw a very Brown Junior spark ignition engine, and nice glider made by Mr. Saito (Kyoto), in fact, they are still very popular among and he placed 2nd with it. I loved his "Old Timer” model builders. The Junior glider, especially his workmanship. Mr. holds a special place in my memory, Ishii (near Tokyo) placed I st, his 7-round since it was my first engine, and was total was 947. I think he is a younger given to me when I was about 12 years man. The average number of points was % old. 847. Now, the Brown Junior name is once The contest finished at 3 PM. During again on the scene, in the form of a new lunch time, Mr. K. Isobe, Mr. Y. Taka- CO2 engine. CO2 engines arc actually hashi, Mr. Nakamura, Mr. Nonaka, and I quite an old idea, and in fact engines of demonstrated R/C thermal gliders. The this form were advertised prior to World gliders were towed by an electric winch War One. However, the majority of them I had made myself. We put the winch up­ were bulky and suffered from various wind and ran 300 meters o f wire back to inconveniences. The Campus series of the foot switch. We could adjust the engines, which were also designed by towing speed with the fool switch, like Bill Brown, were probably the first real­ a car accelerator. It attracted much ly efficient, lightweight examples of the attention. Mr. Nonaka used a heavier breed. Unfortunately, they were intro­ glider. His glider had small wings and a duced during a time when control line very small stabilizer; of course, the center models were at the height of popularity. of gravity was located on the front edge Bill Hannan releases his...er..Train monoplane Thus, they never seemed to receive the B row n C O 2 powered, at Elsinore. It does fly.

32 The MODEL BUILDER SUPERCOAT DOPE THE AUTHENTIC FINISH THE ONLY WAY TO REPRODUCE FULL SCALE FINISHES

BEAUTY a n d DURABILITY a t l e s s c o s t THAN ANY OTHER FINISH OR COVERING MATERIAL

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SIG MANUFACTURING CO...... Montezuma. Iowa

recognition that they deserved, in spite rpm setting. Even longer runs can be of the fact that many excellent model achieved, if desired, by adding additional designs for the Campus engines were "fuel" tanks. The fuel is, of course, pro­ published and/or kitted. vided by easily available soda fizz cart­ Today, however, things are different. ridges. Currently, several small R/C mod­ Flying space is at a premium, and the els are powered with this type o f power noise factor usually associated with pow­ plant, including at least one which is ered model aircraft has become a sen­ being flown INDOORS in a gymnasium! sitive issue. Thus, the new Brown Junior Multi-engine models are a cinch with CO2 is being enthusiastically received by this form o f power, since each engine model builders all over the country. may be hooked to a common supply, Consider some of the advantages: which assures that they will all stop at 1. They are CLEAN, and eliminate the the same moment. need for bothersome fuel proofing. At about $30.00, the initial cost may 2. They are very small, and easy to seem a bit steep, but consider the follow ­ mount and cowl in. ing: These units are being virtually 3. They are very light in weight (approx. handcrafted, which requires a special 5 /16 02.). type o f tender loving care (and you can 4. They arc QUIET. hardly get that anymore!). The engine, 5. They start in one flip and require no once purchased, is economical to oper­ batteries. ate, since it may average from 5 to 8 Another distinct benefit, especially to runs per cartridge. Locally, discount scale modelers, is the fact that these houses sell the cartridges for only $1.09 engines will turn virtually any size prop­ per box of 10. Considering the cost of eller from 3” diameter up to about 6” glo fuel, this begins to seem quite rea­ diameter. Then too, rpm is easily adjust­ sonable. able, which means the engines may be Recognition of the potential of these throttled down for those critical first engines was underlined by the AMA test flights. ruling allowing CO2 engines to compete Average duration may run anywhere in the free flight gas event of the Nat­ from 20 seconds to over a minute, de­ ionals. Who will be the first to take ad­ pending upon the choice of props and vantage o f this challenge?·

The MODEL BUILDER 33 WORKBENCH··· Just cut the ribs and the tips and the dry, set the upper wing in place on lop Continued from page 5 center cutout from 1/16” sheet and of them. Check to sec that it is properly tion demands, the exhaust lubes will be assemble the parts. Leave the wing spars alined and then cement it to the “ N” installed to the customer’s specifications, o ff until the structures have been re­ struts. When this assembly is dry you as a special service, for 50 cents per tube. moved from the board so the proper can cut and fit the center sections struts * * * dihedral angle can be built into the and the tail struts. Received a sample of Midwest Pro­ bottom wing. The lop wing spar is flat. The top covering of the spreader is ducts newest kit, the "E-Z Juan,” a nine Build the fuselage sides over the plans. slit and the landing gear struts are foot sailplane designed by Le Gray, our The lower wing saddle is made from cemented to the bottom of the lip ribs LSF reporter in this issue. The kit is sheet balsa to eliminate the problems and the cross axle tubing. Make sure the very complete and includes all fittings of bending a stick to match the curve top ends are located correctly. Now for control linkage and the plug-in wing of the front bottom of the fuselage. cement this assembly onto the bottom panels. Ship is a relatively easy one Remove the sides from the plans and of the fuselage. (E-Z Juan, get it? The “ J” is pronounced note the curve o f the back end of the Put a short length of aluminum tube like in Josfe Jimine/) to build and fuselage in the top view. To obtain this in each of the Williams wheels as a features multi-spar wing construction curve the two sides must be cemented bushing. Cut an axle to length from which sort of gives you built in tabula­ together at the tailpost first and a l/32nd wire. Slip it through the cross tors. triangular gusset cemented in place top tube and slip a wheel on each end. * * * and bottom. This should be allowed to Secure the wheel to the wire with Among others who have noted the dry thoroughly before going on to add cement or epoxy, making sure not to increased activity in free flight rubber the cross pieces that complete the fuse­ get any in the cross tube. By doing this, and CC>2 scale are the Williams Brothers, lage box. Five top formers are required both wheels are part of a single unit and 181 B Street, San Marcos, California, to support the top decking. They are not arc forced to rotate at the same rate, 92069. Fortunately, for those interested, shown individually, but see the front thus reducing the natural tcndancy of the company is producing several model­ view for their shape. the model to ground loop. ing accessories that will make this phase Sheet side stringers are required at Add the lailskid and the propeller of the hobby even more inviting. the nose of the body, these extend from installation. The propeller on the model Smooth and vintage wheels are al­ the two side nose formers to the upright shown was cut down slightly and the ready available in 3/4, 1, 1-1/4, and just aft of the cockpit. edges straightened somewhat to make it 1-1/2 inch diameters, as arc radial and Round the surface leading edges and look more like a scale propeller, but in-line nose bearings in 5/8, 1/2, and taper the trailing edges and generally more duration would be available with 3/4 inch scale, and dummy radial cylin­ sand the structure smooth with fine the larger propeller area. ders (5 to a pack) in the same scales. sandpaper before covering. The model Add details as you desire, such as A sturdy, but lightweight nylon prop of shown is red, white, and black. Probably handles, steps, machine guns, windshields, 5-1/2 inch diameter is also available in no real D VI was covered or colored in and instruments. The crosses arc cut two hub configurations; one for rubber such fashion but this model was built for irom black tissue and lightly doped in power and one for C02- fun. The white tissue was put in place place. The newest product is basic engine first in just the areas that were later to I doubt if the Red Baron did much kits, which include the previously men­ have the black crosses Then the rest of flying in the D VI but this model will tioned cylinders in groups of 5, 7, or 9, the model was covered with the red take care of any Peanut Scale Snoopy plus a molded crankcase to suit. The tissue. Water shrink the tissue and dope that shows up on the model fie ld .· crankcases include molded-in prop shaft the surfaces with a single coat of thin L.S.F. . . . Continued from page 22 bearings and square mounting plugs. dope and the fuselage with two coats. Modelers may add rocker boxes, push A black fell pen was used to color all about. How similar the ideas...plans and rods, etc., to suit their own particular the struts and a red fell pen was used to aspirations...of far distant but now good requirements. Complete instructions are color the cowl. friends. Old buddies laughing over things provided. The combinations of manifolds The true shape of the landing gear of years ago...or yesterday. The silent and cylinders in 3 scales, nine selections struts is indicated by the phantom lines admiration evident in examination of a all together, range in price from $1.05 in the side view and the wing “ N” struts sleek new ‘glass fuselage...the master- to $2.49. · ______are shown correctly in the side view also. craftsmanship of a long, slender wing... Note the points at the ends which are the clever design of a new mechanism. PEANUT «»·· Continued from page 23 inserted into the wing ribs as indicated. The feeling of pride shared with an It also has all its struts cut from 1/64” The positions o f the strut ends arc unknown contestant who had done well plywood (Available from Sig.) with the indicated on the plans by little “ X ” ...or a newcomer who completed a landing gear struts doubled for strength. marks. Before assembling any of the particularly rough flight "all in one The wheels, propeller, and engine cy­ surfaces onto the fuselage, locate these piece.” The not-to-be expressed sym­ linders are plastic, manufactured by points, and in the case of the wings, pathy over a “ wipe-out.” People and Williams Brothers, and should be avail­ insert the point of a knife to provide a planes able at your local model shop. A few hole location for the strut ends. Note Sometimes tension is broken... inches of 1 / 16th diameter aluminum that these arc on the bottom of the top frustration is cased by an inadvertent tubing and a short length of I/32nd wing and the lop of the bottom wing. act or lucky accident. In the heat of wire arc the other major material items Now cement the bottom wing and the competition on Saturday, after six hours for the basic structure. Japanese tissue horizontal tail in place on the fuselage. of maddening wind and dust, nerves, is used to cover the model. Then cement the “ N” struts in place on if not tempers were frayed. One partic­ The wings, tail, and the landing gear the lower wing. Make sure they are ularly demanding task at any major spreader are built directly over the plans. vertical in the front view. When they arc Continued on page 36

34 The MODEL BUILDER • From time to time, if our readers The BI-PRENTICE express enough interest in the idea, we would like to present construction projects which are, in a certain sense, a two-wing trainer incomplete. An example o f what we have in mind is this month’s presentation, the Bi-Prentice. The usual construction article is of a proven design, such as Jack Elam's glider in this issue. The article includes, in addition to the plans, several photographs of the model, and a text which gives some background and/or accomplish­ ments of the model, along with instruc­ tions for building. This type of presenta­ tion is pretty much standard throughout model publications. There is, however, a large untapped source o f designs that never reach the modeling public. These arc the ones created by designers who do not always have the time or opportunity to build, test fly, and photograph every model they put on drawing paper. There are also many tested designs that don’t get published; sometimes it’s lack of photo­ graphs, sometimes the designers don’t have the desire to put together a text. It is not our intention to present wild, far out (unless they’ve been tried) figments ol the imagination that some kook may have dreamed up while on a "trip ” , but rather, good modeling projects that if not published incomplete, might never get published at all. If you have something that fits the description, drop us a note about it. We’d also like to know your opinion on the idea. The Bi-Prentice was a follow-up design to our Apprentice, which was published in the May 1968 issue of MODEL AIRPLANE NEWS. By making only minor changes in the flying surfaces, and designing a new fuselage, we came up with a biplane version. One Bi-Prentice was built and flown by Rudy Black, a modeling buddy from Delaware. The only problem he had was cured when he moved the balance point forward to the location indicated! As with the Apprentice, this airplane is designed for rudder, elevator, and engine speed control. Ailerons arc unnecessary. Engine size needed will depend on your building habits. A good .29 would fly a 4 pounder in a calm fashion. For 5 to 5 1/2 pounds a .45 or or .50 would be just right. A .60 should only be necessary if you’re inclined toward lead-sleds. Don't be afraid o f the coat-hanger cabane struts. They’re plenty tough when used as shown, and arc much easier to work with than music wire. ·

FULL SIZE PLANS AVAILABLE - SEE PAGE 48 The MODEL BUILDER 35 the wire is very hard, resulting in neg­ ligible line wear. With an open design such as this, there are no narrow cracks for the line to catch in. Weeds, knots and other de­ bris can pass through without causing any problems. After a flying session you can reel in the line without fear of the tow ring or flag catching in the pulley. When the plane releases, the bike hub runs free with the line laying on it. The friction is so small that the line does not get wrapped around the hub. Because of its’ low inertia, the hub will follow the pulsing of the winch as the pilot controls the launch speed with his foot switch. This design is so simple that one can be built, using simple shop tools, in TURN-AROUND PULLEY By Rod Smith about one half hour. The total cost is a • This turn-around pulley is based on the bolt. function o f your ability to “ scrounge” . similar designs that have been in use in Since a turn-around pulley operates Our local bike dealer sold us an old hub, Northern California for the past couple at a distance o f about 900 ft. from the that he could not give away, for one of years. The big improvement is the eli­ winch and launch point, a trouble free dollar. mination of the eye bolt that was used to device is essential. With this design the The base is a piece of 2x4 and side guide the line over the pulley. The eye line will be at one side or the other but pieces are 1/4 or 3/8 plywood. A draw­ bolt and line were subject to excessive the contact loads between the line and ing is not necessary. The photo serves to wear and the line could tangle around the piano wire guides arc very low and illustrate the construction.·

L.S.F. . . . Continued from page 34 tables cleared, the evening’s program of the 1970 World’s Soaring Champion­ contest is P. A. duty. Again this year, was peoplc-lo-pcople oriented and gave ship held at Marfa, Texas as recorded by boom-voiced Hank Heard (A remarkably recognition to special guests: Phil Kraft, the cinema-excellcnceof Judy and Roger appropriate name. Ed) drew the assign­ a Tournament Sponsor two years running Grigsby. ment. Crowds of spectators invaded and this year a participant in his first- It was 1 1:30 and C. D. Bob Andris "restricted” areas and milling contestants ever sailplane contest; Dan Pruss, 1970 had scheduled Sunday’s pre-flight brief­ gathered around the flight line. Repeat­ R/CSoaring Nationals Director; Rodman ing at 0800 hours. Lights out at the edly, Hank called the offenders back and Smith, 1971 National Standard Class Holiday Inn and other nearby motels. regained control of the field only to lose R/C Soaring Champion: Bill Holliman, Ted and Alice Nelson’s “ Humming­ again by human osmosis. By mid-after­ Deputy District Attorney of Los Angeles, bird Haven” gliderport is just cast of noon, Heard was as hot, tired, dirty and representing another sponsor, RC Livermore, California about 35 miles hoarse as anyone on the field...and the Modeler; Ray Lorbcr covering for brother southeast of San Francisco-Oakland. The people were once again on the runways, Carl’s East Coast Soaring Society's News­ field is an operating, private airport surrounding the impound areas, and in letter; Dave Linquisl, traveling from identified as home base for the Northern the launch zone. In utter frustration, Lafayette, Indiana just to spectate. And, California Soaring Society. During August Hank, at maximum P. A. volume, warned the very special Tournament Banquet of each year, NCSS members trailer that any contestant who had not been Guests, Ted and Alice Nelson. their sleek birds to the Trukee-Tahoe called to fly that was in the launch area In the far-flung-flyers category, Currie airport for wave soaring in the Sierra. would be subject to immediate disquali­ Lee of Honolulu, Harley Michaclis of Thus the field is closed to normal fication and then added “ ...and that goes Walla Walla, Washington and Val Hutch­ operations, but available to the LSF for spectators, too.” There is no record inson of Amarillo, Texas competed with Tournament. that any spectator was disqualified, but Plainfield, Illinois’ Dan Pruss for distance The main runway at Hummingbird is the pressures of the day seemed lighter to home field. Another round of intro­ east west into the prevailing Pacific winds. for awhile. ductions identified six tournament A shorter, secondary strip runs to the Early evening hours at off-field competitors who have held one or more southwest. Two long, metal T-hangars “ headquarters” found the more resilient international R/C soaring records. The house a full compliment of exotic soaring contestants and their ladies gathered in after-dinner comments were capped with equipment, and the north edge of the the hospitality room. Another hour of a tribute to the LSF, the 1971 Tourna­ field is usually packed tight with trailer- socializing...of recounting the day’s highs ment and its participants received from hangared sailplanes. Behind the trailers, and lows...and 125 guests progressed to AMA President, John Clemens. the typical California fence-row of the banquet room for 7:30 dinner. The balance of the program consisted towering Eucalypus trees whisper back Noticably absent were many of the of movies. Keith Brewster and his to the breeze. Yellow-brown hills roll younger pilots who, with the practi­ fantastic R/C sailplane, air-to-ground into a cup lip on all but the west side of cality o f youthful directness, had cleaned footage; the AMA 1970 R/C Sailplane the field. These gentle slopes are broad up, grabbed fresh jeans, and had an early Nationals coverage; and SSA release on enough to support thermal development dinner at a nearby hamburger emporium. the recent Hang Glider Contest near San and long enough to give ridge life on The banquet fare completed and juan Capistrano; and the beautiful reels stronger days. The Nelson residence is

36 The MODEL BUILDER nestled in a grove o f green shade, and, casual confidence seldom associated with with its adjacent swimming pool, bar- airborne jewels. The Phoebus featured RELIABILITY! beque pits, and picnic tables, enjoys a an all flying T-tail, operating wheel brake, park-like atmosphere. and appropriate cockpit detailing. “ Hummingbird Haven” ...named for Number two honors in scale went to FOR 1 Harry Pearl and Ted Nelson’s famous Col. Robert Thacker of San Clemente, 00 powered sailplanes...is available to the California. Thacker's offering was a Wik $189 LSF Tournament courtesy of Gerry Kestral with full cockpit details and Nelson of Midwest Model Supply Co., coupled ailerons and rudder. Bob Andris The most important feature to look for in a digital proportional system is RELIABIL­ Chicago, Illinois. carried away third place with his colorful ITY. Digiace is just that. Highly reliable! The League of Silent Flight RC one-sixth scale Slingsby T-S3B. The next important thing is price. Digiace has this advantage too! Highest reliability Tournament is co-sponsored each year With the number of contestants for the lowest cost. Digiace has everything you need to get into by selected commercial leaders who are registered and flying, an estimated 250 the air for some real flying fun! It’s a com­ pletely assembled 4 channel system with heavily oriented to R/C soaring. This sailplanes were on the field during the 4 servos . . . triple tested and ready to in­ year the two-day soar-lympics was under­ two-day event. The array and variety stall. (AND backed by our own factory- authorized service.) written by Du-Bro Products, Kraft was mind-bogeling. All sizes and shapes.. You have to see it to believe it! Order to­ day! You'll really be impressed with the Systems, Midwest Products, Model all colors and trims...numerous structural excellent workmanship in the high power transmitter, highly selective receiver and Airplane News, Orbit Electronics, RC and covering materials...and applied aero­ quick responsive servos. You'll see why Digiace is known all over the world for its Modeler and Top Flitc Models. dynamic theories representing all schools flawless performance! In 1971, the Tournament was co­ of design. Treat yourself to this terrific value! Just send in this coupon and it's yours! hosted by the North Bay Soaring Society, One of the more popular kit designs Richard Lemme, President, and the South was the Graupner “ Cirrus” ...but Herr Digiace-4 $18900 Bay Soaring Society, Curtis Christen, Graupner might be hard pressed to 4 channels with 4 servos □ Airborne weight 13 oz. President. Members of the two groups identify some of the many modifications. Operates on economical dry cells provided all services and handled all Keith Brewster, LSF/002 and proprietor (not included) tasks associated with the affair. of Sunnyvale, California’s Silent Flight Please send your free catalog A Scale Class competition was intro­ Center, flew a stretched wing version Street------city------— \_J duced this year. It was conducted in spanning 12 feet. Taking a direct approach State______Zip------■ accordance with the sailplane rules as the easiest route to his desired goal, Dealer inquiries invited. Drop us a line or proposal now under review by the AMA. Brewster merely increased rib spacing ph------* * ” * “ The numerous flying works-ot-art on by a half inch. No new ribs required. hand included a full count of modern Dr. John Camp, from San Marino, Cali­ designs such as Cirrus, Phoebus, ASW-15, fornia, had incorporated very effective Kestral, Fokker FW-3, Schweizer 2-32, spoilers. Others were seen with ailerons, Numerous originals and magazine Diamant, Sagitta as well as a pair of coupled ailerons and rudder, increased designs were present: Dave Saks, up Franklin Primarys. The display represent­ rudder areas, wing tip extensions, in­ from the San Fernado Valley Silent ed the largest collection of scale sailplanes creased dihedral, and fiberglass fuselages. Flyers, with an all white, Neil Liptak models ever assembled in this country. Most, however, were stock...right out of designed “ Sabre Soar” ; Floyd Carter of Static judging was conducted Saturday the box. the famous Sunnyvale, California Pioneers morning. The panel of judges included The famous “ Kurwi” was well repre­ R/C Club with a new V-tailed beauty; B. S. Smith, former President o f the sented in a range from Dan Pruss’ Kenny Hamlyn and his all-balsa, Soaring Society of America, and Floyd three year old “ 33” to Dale Willoughby’s Jedelsky-winged “ Hawk Eye” decorated Carter, one o f the leading scale builder- brand new “ 68." The unique, low wing with red, white and blue tissue paper; experts in the Western United States. By “ Jalapeno” kitted by JAC-MAC was John Donelson flying the Jack Elem Tournament rules, only the ten scale there. designed “ Nancy” ...small and simple but sailplanes earning highest static points Harley Michaelis’ beautiful “ Miskeet” potent, as evidenced by final standings; progressed to flight competition. The was always surrounded by an admiring Currie Lee’s Hawaiian V-tailed “ Shaka” . scale ships flew Sunday’s flight tasks, group. Offered as a “ short” kit ..fiberglass Chris Jones flew a Keith Brewster “ T- grouped at the end of each round. fuselage and plans...by Fliteglas Models, Traincr.” Launch was ROG by electric winch and this high aspect ratio bird seemed to Some of the more sophisticated points were earned in actual competition most observers to look as a sailplane originals included Frank Colvcr’s famous ...not just by demonstration flights. should look. Harley’s smaller but equally “ Santana” ...with lines much like a The overall performance o f the scale beautiful “ Hi-Pro” served him well in Standard Austria...featuring differential sailplanes drew the admiration o f all competition. tip spoilers for directional control, mid­ hands, and provided adequate testimony Several examples o f the new Francis span spoilers for altitude control, and a that realistic appearance need not Products’ Fokker FW-3 were on hand. V-tail. Mark Smith flew his “ Happy diminish flight capability. Several com­ One of the more impressive was Hugh Hour” ...an HP-14-ish original spanning petitors elected to fly scale models in Stock’s 12 foot span version. With a some 12 feet. Mark utilizes a radio- Open rather than Scale Class, and scored white fuselage and colorfully trimmed, controlled tow line release to good well up in overall final standings. transparent yellow Monokote flying advantage, making near vertical climb- The top scale award went to genial surfaces, Stock’s FW-3 was a magnificent outs on launch...one time this year John Donelson, President of the Harbor sight in flight or at rest. applying enough force to break the 160 Soaring Society, Costa Mesa, California. The ubiquitous Fliteglas “ Phoebus” pound test nylon launch line. But he Donelson, a strong supporter o f the was evident in many variations and never worries about premature tow scale soaring concept, flew his immacu­ colors including one very striking, all release. late Phoebus “ C” to top honors with a orange version. Popular domestic kits in evidence

The MODEL BUILDER 37 SANTA BARBARA ONE DESIGN . . . shows an excellent L/D, and captured the lecent Western Soaring Champion­ THE AMERICAN MODEL YACHTING ships at Perris Valley in Southern ASSOCIATION'S MOST ACTIVE California. Bob and Roland Boucher also displayed a fiberglass fuselage ASW- RACING CLASS. Fiberglass yacht 15 under consideration for the Astro kit with Dacron® sails, $ 142.50. Flight products line. Bob Andris and Marshall Watson showed twin "Dia- Sail control mechanism with bat­ manls.” The highly professional glass tery and charger, $75.00 For two work in the Andris design attracted many favorable comments. The versions or three channel radios. Also avail­ flown were each fitted with original, 11 able assembled and finished. foot panels, but reportedly the fuselage can also be used with Graupner "Cirrus” wings. LITTLE MIKE ... THE DISTINCTIVE Lc Gray and Bill and son Daryl FORMULA I PYLON RACER. Fiber­ Whitney were flying Le’s Windancer designs. Lc had his faithful "Gypsy Gull” glass fuselage and wheel pants, with a new wing configuration with canopy, formed gear and complete lurbulator spars. Bill was flying the low aspect ratio “ Yankee Gull” that plans, $42.50. Foam wing cores, packs seven feet o f area in 100 inches of $10.00. span, Daryl, LSF/100, sported a newly constructed "Hangar Queen” mated to “ E-Z Juan” wings from the soon-to-be- Designed by Tom Protheroe. rcleased Midwest kit. A new Windancer See your dealer or write for details. design, "Soarcerer,” was displayed but not flown. The Soarcerer is quite short coupled, features a swept forward wing, and promises to be a mean competitor once developed. The first prototype was strained through hi-lines just three days before contest time. were the Boucher brothers' Astro Flight plane combo...having just met at the Ken Willard arrived with a new, "Monterey" and Mark’s Models' "W ind­ winch early Saturday morning...placed a functional design obviously slanted to ward.” The manufacturers were flying well deserved third in the hard fought the interests o f his Sunday Flying Fans their own products and supporting others Duration Task. Reportedly, Eddie’s around the world. In typical Willard from their kits that were on the field. “ Cumulus” is the first flying version in fashion, every line was calculated Big Bill Watson scored well with his this country, and certainly the first seen simplicity,contributing loan all-business super-light "Monterey.” Lloyd Weaver in competition on the West Coast. appearance and good all around per­ brought joy to the Mark's Models' Val Hutchinson...out from Amarillo, formance. hangar with his Windwards performance. Texas...and his covey of Canyon Plastics’ Bob Chase...SSA Director and Bob and Roland Boucher impressed all styro-foam "Schweizer 1-26” semi­ designer/builder/pilot of the beautiful, all with a flying demonstration of their scales proved themselves again. Val team­ high performance, full scale C-IOO-S electric powered Fournier RF-4. ed with Phil Kraft...oft-times national sailplane...made a return visit to the The mighty J & R "Kestral” was out and international R/C pattern champion world of model soaring. In 1956 Bob set in large numbers. Bob Seigelkoff strum­ ...to provide the well known hobby the international endurance record for med the heart strings o f all who were in industrialist with his first tastes, impress­ model R/C gliders...some 8 hours 34 sight of his unfortunate finale. Radio ions, and surprises in R/C soaring minutes...with single channel, rudder- failure...or at least loss of control competition. only on escapement. Bob and son Bill response...put his 10 pound giant through The diminutive “ Sagitta” as modelled flew identical originals that will prove to a series of increasingly violent stalls and by Sacramento’s Stan Powell from a be potent competition in coming months. and sometimes loops. The last maneuver Francis Products’ kit earned much Too new and unfamiliar to be a threat ...a perfect figure "9 ” ...terminated in a admiration. in the Tournament (first flights had been huge cloud of dust a mile north of the Young Bill Lawrence, Jr. entered an late Friday evening) Bob’s just completed field. A beautiful and impressive machine extended wing, Bob Hahn designed Mid­ designs nevertheless drew considerable but not even all-fiberglass construction west " L il’ T ” while the elder Lawrence attention and admiring comment. The can withstand an impact of such magni­ competed with his beautiful, but much white and blue soarers used a polyhedral tude. At least one ) & R...originally modified and long spanned, T-tailcd wing of 12 foot 4 inch span, and an Nelson...Ka-6E was seen. “ Bjorn.” unusually long tail moment terminating Eddie Rempalski of the Harbor Soar­ Many prototypes of new designs in a T-tail. Fuselages were extremely ing Society made a respectable mark with were fielded. Kelly Pike, President of lightweight fiberglass and undoubtedly a new Graupner "Cumulus." Young Ed's the San Diego Torrey Pine Gulls, flew incorporated much advanced materials swept-wing bird was a brilliant all-red a soon-to-be-kitted, one-sixth scale,ASW- knowledge Bob has developed in design finish, and being a brand new pilot- 15. This very efficient configuration and construction of his full scale ships.

38 The MODEL BUILDER Most kits from throughout the world were represented by at least one entry. The always popular “ Amigo II” was seen in several trims. One of the new Ka-7 imports performed well in an attractive blue with while stripe color scheme. A NYROD "Dandy” or two were on the field. The “ Foka” ...both import and domestic... YOUR SERVO'S was on hand, as were several attractive "Windspiels” . GENTLE HAND pL„ NFIELD.,LL,N„ ,S 60544 One of the better designs was the OTHER NYROD ACCESSORIES PACKAGED FOR YOUR CONVENIENCE original creation of 17 year old Richard Wallers ot Saratoga, California. Rick’s

concept of aerodynamic truth is NYRODapter obviously based on simplicity improved Su-Pr-Keeper Su-Pr-Klevis 2-56 Studs by development. The basic configuration, nicknamed “ White Trash” by Rick’s recall Rick working a micro-miniature (b) exposed ground, and (c) brisk wind elder and envious flying companions, thermal over a hot sidewalk, circling for development. A Dust Devil is a was layed down about three years ago. around a street lamp post. miniature tornado...a highly visible Since that time, Rick has flown, improv­ To check a trim change, Rick takes a thermal...with adequate strength to ed, changed, developed, re-built and step or two into the wind, makes a tumble and destroy both model and modified his creation almost continu­ mighty heave, circles 360 degrees and man-carrying sailplanes, depending upon ously. Younger brother Jeff, who took catches the model as he flys it back to its stage of development. The familiar the Duration Task top honors in Sports­ his hand. Any landing over three feet cry o f warning, “ Dust Devil coming,” man Class at the 1970 Tournament, and from the intended spot is unacceptable. stops all field activity as everyone grabs constant buddy Chris Maunlz have also And "White Trash” is launched with a papers, tents and model sailplanes... contributed to advancement of the winching technique that “ kites” up to whichever is closest. Best protection for design. But Rick has led the way. The maximum release altitude...usually models seems to be to kneel at the fuselage is a simple box structure with a several hundred feet above competitors. models’ nose, back to the wind, bend rather long tail moment and simulated Rick Walters’ “ White Trash” is no over with outstretched arms, palms down cockpit canopy. A non-lifting stabilizer, longer clean or trim or hardly even flat on top of wings. When Dust Devil mounted forward of the vertical fin, attractive, but it is a classic example of arrives, hold breath and hold down as incorporates a split elevator. The top- “ beauty is as beauty does.” The original the world blackens with swirling, choking, mounted wing is of a simple, flat- and the originator arc good friends. blinding dust. And then its gone. bottomed section with a constant taper They work together in a most compli­ But Dust Devils indicate that there is plan form, with plug-in panels lip for mentary fashion to do their “ thing” ... lift...big lift...starting at ground level and ease of transportation. Span is 10 feet fly and win...beautifully. Meanwhile... reaching who knows how high. and the wing features rather severe back at the tournament. The first flight round on Sunday was polyhedral. Total all up weight is under The hopes o f improved weather a repeat o f Saturday’s Precision Task. three pounds. conditions for Sunday were dashed with Again the wind and gusts look their This year, Rick, Jeff, Chris and at the first pre-dawn peek out o f motel toll of both sailplanes and points scored least one other member o f this teenage windows. Bushes rustled and tree tops but skill, consistent skill, stood out and elite guard of R/C soaring entered their swayed much too much for such an paid o ff. With the two Precision Tasks “ White Trash” models. The design, in early hour. As on Saturday, Pilot Brief­ offering a combined total of 2,000 these capable young hands, has collected ing at 0800, first launch 0830. Results possible points, Rick Walters and "White more hardware in twice-monthly contests of an overnight conference between Trash” racked up 1,980 to lake first. over the past two years than any other C.D. Bob Andris and Tournament ChrisMauntz, with his version of “ White single design on the West Coast. To Manager “ Chris” Christen were announc­ Trash” came in at 1,835. Stu Horton LSF 1971 RC Soaring Tournament ed: only two events would be flown... with a Cirrus was third with an even competitors, the “ White Trash” corps Precision and Duration. The Speed Task 1,700 points. John Donclson, the highest was potentially bad news. was cancelled. scorer in Precision who could also vote The tales of performance par This program revision maintained the in national elections, flew his “ Nancy” excellence by Rick Walters and his multi-task concept, but permitted each to a 1,675 point fourth place. soaring machine arc numerous and varied, contestant only one shot at Distance The Duration Task called for a five- but most revolve around spectacular points and one at Duration. Two Preci­ minute max with a Scale Runway landing featsof control. Rick and “ White Trash” sion rounds ruled out all possibility of a for bonus points. Three minutes were never quit while air is still moving lucky flight taking the hardware. allowed after max to touchdown without over the wings. Many limes a “ bump” And the wind blew and the dust loss of earned flight points. A max was has been noted during a landing approach flew and the sun shined hard down on worth 900 points and a well placed at altitudes under 20 feet, and sub­ exposed noses. By noon and the start of landing up to 100 bonus points... 1,000 sequently worked for additional minutes the Duration Task, Dust Devils came points for a perfect flight. and sometimes hundreds of feet of down the runway with precision regular­ As the Duration round progressed, a altitude. More than once, “ White Trash" ity. A “ Dust Devil” is a meteorological new hazard developed...difficulty in has thermallcd within the confines of a phenomenon peculiar to the Western releasing the tow line. Each launch in softball diamond infield, and many can States which requires (a) open space, the heavy wind called for dexterous

The MODEL BUILDER 39 Rick Walters o f the Santa Clara Valley’s South Bay Soaring Society. Many brilliant NYLON PROPELLERS performances were marred by a quirk of luck...wind under a wing tip turning a model just out of pay dirt...an infinite­ simal misjudgement in approach speed in the gusty winds ending in a missed landing. Myles Moran, President of the At last, rugged, efficient propellers for small model aircraft! San Fernando Valley Silent Flyers, lost Precision-molded from non-brittle white nylon. Available in two points in a real cliff-hanger. After just styles: RUBBER-POWER and CO2. Diameter: 5 y2" Price: 29< each touching down in the maximum point runway area, but while still light on the wind, a gust lifted his Cirrus and moved it backwards about four inches to come to rest in a lesser point zone. A five-way fly o ff was started for the top Duration Task pointers. First o ff was UNIVERSAL DUMMY ENGINE CYLINDERS are finely Donelson’s “ Nancy” for a second perfect molded of sturdy high-impact styrene, and feature (Two styles per pack) flight and precision landing. In rapid thin, deep cooling fins for utmost realism. (% ” scale) Price: 49< order, Hahn’s “Cirrus” , Rcmpalski’s Available in 3 sizes (5 cylinders per pack) 3/e" scale: 59c. ’/2" scale: 89c. 3/4" scale: 98c. (V i” scale) Price: 69< “ Cumulus” , and the 12 foot “ Happy Also available, engine cylinders in Γ ' 1 V»". and 2 " (% ” scale) Price: 89< Hour” of Mark’s Models’ Mark Smith all ASK FOR WILLIAMS BROS. PRODUCTS A t YOUR DEALER. maxed in the diminishing lift conditions, WlLLlAMS SEND 25* FOR OUR SCALE MODEL ACCESSORIES CAtALOG but each fell short of top points in ΙΙΙΟΓ 181 “ B” STREET, SAN MARCOS, CALIFORNIA 92069 landing. Walters’ "White Trash” maxed and then came in on the spot to set up a pulsing of the winch motor to minimize Society made an inadvertant but dramatic two-way flyo ff with Donelson. climb speed and thus air loads on slender product evaluation test. His "Santana” , Eddie Rempalski’s performance had wings. This technique provided very a fairly heavy and very efficient penetra- locked up third place in the Duration good launch altitudes, but when winch tor, has served him well during its Task. Hahn and Smith pulled fourth power was stopped, the tow line unreeled. several years of competition develop­ and fifth . But top honors would be What was happening was that the sail­ ment. Recently, to reduce overall weight settled with a final, sudden-death round. planes were gaining altitude so fast in and improve “ light conditions” perform­ The winds continued to sandblast thermal lift while still on the tow line ance, Frank replaced the original nylon “ Hummingbird Haven” as the sun drove that the line was being pulled with them and dope wing covering with new, heat- straight into the eyes o f the pilots as they climbed. This kept tension on shrinkable synthetic materials...Brand launching the last two flights o f the LSF the lowlinc so that a high speed dive was X on one wing and Brand Y on the 1971 RC Soaring Tournament. More required to overfly the line and get other. Both panels were a beautiful, than 100 pilots were now spectators, slack enough to release. gleaming white and identical in appear­ and they joined the throngs of visitors Maximum flight times were flown ance. Upon reaching maximum duration pressing Ihe crowd control ropes near by many contestants, and more than time, Frank eased the Santana’s nose the launch area. one sailplane gained near out-of-sight over in a long, sweeping high-speed run A simultaneous launch was specified altitude within two minutes after tow back to the field. This maneuver was a by Tournament Director Andris to give release. Jim Balch, from Canoga Park, standard in the Colver repertoire. In the the two pilots identical flight conditions. California challenged his Timer’s reading past, Frank often concluded his flights Winchmastcr Gerry Wolfram assigned ability. )im could not believe a sailplane with a spectacular high-speed, low Donelson to the Number Four Winch could get so high in so short a lime. At altitude pass...an act the Santana seemed and Walters to Number One. The Timers two minutes...by the Timer...)im started to enjoy. During these runs, a distinct assigned to each man had their thumbs his Cirrus down. He still maxed. whistling created by the speeding sail­ poised lightly on stop watch buttons. Many pilots cranked in full down plane was evident. But on this day, as Donelson and Walters signaled "ready” . trim at the three minute mark having speed built so did wing flutter...violent, Wolfram called “ Launch away” , and the more altitude than could be safely visible, audible and potentially destruc­ two sailplanes leaped forward grabbing dissipated in the remaining two minutes tive wing flutter...on one panel. The for flight with eager wings. to max. Several sailplanes lost altitude other wing held steady. Frank immedi- Donelson carefully pulsed the motor by a series of loops, but some gained atcdly reduced speed and the flexing on Number Four Winch to case the load with each maneuver. Rod Smith circled panel stabilized. Later he was heard to on “ Nancy” while reaching for maximum his blue and yellow “ Windward” over­ offer several rolls of Brand Y covering altitude. But there was an air of tired re­ head for several minutes in an inverted material at prices considerably less than luctance in Nancy’s behavior...a listless- attitude. But lift on Sunday afternoon retail. (Please note editor’s comment at ncss foreign to her character. In spite of at Hummingbird Haven was o f the conclusion o f this article.) the strong head winds...of the careful “ Killer Thermal” variety, and only very By the end o f the Duration Task, five, winch technique...Donelson was not get­ determined nose-down flights angle could of the 103 contestants had coupled ting altitude...Nancy was not climbing. overcome the rising currents. Many a maximum flight times with perfect land­ Wallers, with brother Jeff and buddy wing flutter was seen and heard during ings: John Donelson, Bob Hahn, Eddie Chris at his elbows, tapped a rhythm on this flight task. Rcmpalski and Mark Smith of Southern the winch motor switch that kited Frank Colver of the Harbor Soaring California’s Harbor Soaring Society, and “ White Trash” near vertically to maxi-

40 The MODEL BUILDER mum height. Upon release, the Timer’s The LSF 1971 RC Soaring Tourna­ EMBEE 75 watch clicked, and Rick held his model ment commissioned Mr. Bob Booth, DIESEL ENGINES S12 95 into the wind as it climbed to become a sculptor, in association with Don Conard Ideal power for . Λ postpaid speck in the electric blue of the Califor­ Mobiles of Ghirardelli Square in San free flight stole 038cu.in nia sky. Francisco, to create a scries o f trophies But Donelson was in trouble. Nancy especially for the Tournament. Mr. D.C. DART s12 95 was o ff the line and low...too low for Booth’s imaginative talents turned to the DIESEL ENGINES ( fj postpaid this critical flight. The problem was media of wire sculpture. FIc fashioned 036 tu.in radio. She had refused to accept “ up- small, silver wire replicas...each resem­ Other D.t. diesels ^ in stock elevator” command, and had released bling a three-dimensional line drawing... from the line at less than 200 feet of the famous “Cirrus” sailplane. Each Know the wind speed altitude. A few bumps as )ohn turned sculpture was mounted by a single wire back to the landing area indicated some to a polished mahogany base. This frail For more DWYER weak lift, and Nancy circled the lazy mounting let the wire sailplane move in information WIND METER w rite : circle of a dying bird in a feeble reach the slightest breeze to give an alivcncss 1 I K $6'50 Postpaid for the lift of life. It was not to be. that augmented the static beauty. Dept.MB The sensitive thoroughbred spirit that When the competition points were HOBBY HIDEAWAY,Delovan,III. 61734

had carried Nancy through two days of totaled, Richard Walters and his “ White GrniMca X jv i U £ n c ofnw fU L · · · grueling competition had waned. Trash” was Overall Tournament Cham­ CLEVELfln □ pion with an astounding 3,590 of 4,000 NOTHING ELSE LIKE THEM ANYWHERE ELSE IN “ White Trash” was in its element... THE WORLD— IN A CLASS BY THEMSELVES! high and free in a familiar sky ...listening possible points. Jay Brchm, flying a Sure they cost mo»e. becouse o whale of a lot more time goes into research to make them whot they ore. but they're worth every penny of their price. That's carefully and responding accurately to Graupner “Cirrus" was Second Overall the reason serious collectors buy practically nothing else! And the models they make, are tops. the transmitted thoughts of her ground- with 3,439. John Donelson and "Nancy” Cleveland-Designed model plans ore the most authen­ tic. super detailed flying models in emstence Thot is based conscience. With the confidence of totaled up to a strong Third Overall with why they win more prises, more honors and more compliments than any other models in the world1 true champions, Rick and "White Trash” 3,415 points, and young Chris Mauntz If you hove not seen a Cleveland Catalog in the post year or so you have not seen the great many fine new had a five minute flight secured...no brought his “ While Trash” in with 3,388. designs we've added ·η all scales—especially m I V Cleveland Catalogs are now a collector's "must problems. A precision landing was of Paul Christian, another teenager flew his NO SERIOUS COLLECTION COMPLETE WITHOUT THE AUTHENTIC "ROLLS" LINE OF MODELDOM little concern...a routine performance. “Cirrus” to a 3,054 point fifth place. Whot is not generally known about C-D designs is our dedication to authenticity with 35 volunteer designers .· They could not be beaten this round... Trophies were also awarded in each for creating the finest flying model designs possible. aided by the great wealth of published information ir only tied for yet another flyoff. flight task category as well as in scale: o ld c CATALOG: SENO 60< TOOAY— 3 YEARS S i.10 “ Nancy” was on her way in. A DEDUCT 10c IP YOU SENO COIN OR CURRENCY PRECISION CATEGORY: EXTRA CATALOG COPIES NOW SOc EACH brilliant attempt by )ohn Donelson could M ODELDOM S QUICKEST M AIL ORDER SERVICE 1. Richard Walters White Trash 1980 not overcome the laws of physics nor Τ.Ί j Π1 r»W7.f>T7HWl 2. Chris Mauntz White Trash 1835 the rampages o f the Transistor God and 3. Stu Horten Cirrus 1700 “ Nancy” was maneuvered into the land­ the LSF may be obtained by addressing 4. John Donelson Nancy 1675 ing pattern. In less than two minutes queries...with 16 cents return postage from tow release, she was near the run­ included...to The League of Silent DISTANCE CATEGORY: way bouncing in the surface gusts. Flight, P. O. Box 2606 Mission Station, 1. George Steiner Cirrus 1000 Donelson fought her into the wind and Santa Clara, California, 9505 I . 2. John Baxter Cirrus 957 let her settle gently onto the center *We checked with Le Gray and Frank 3. Paul Christian Cirrus 914 runway zone...perfect...but too soon. Coiver regarding this incident, and would 4. Jay Brehm Cirrus 869 “ Nancy” was second...“ White Trash” was like to clarify it. Frank had covered one still up. wing panel with Super Monokote and DURATION CATEGORY: At just over four minutes, Rick the other with Solarfilm. This was done 1. Richard Wallers White Trash started down. Nothing fancy or flam­ 1000 for a very logical reason; he ran out o f 2. John Donelson Nancy boyant, just a series of steep spirals losing 1000 one brand half way through the job and 3. altitude with every turn. A final sweep­ Ed Rcmpalski Cumulus 1000 simply finished with the other. The test 4. Boh Hahn Cirrus ing bank, slowing into the wind, and 1000 was not premeditated. “ White Trash” dropped on the mark. The Solarfilm covered panel was the SCALE CATEGORY: Three perfect flights...championship per­ one which fluttered. The explanation is 1. John Donelson formance in any league. “ White Trash” Phoebus“ C” 1973 Tairiy simple. Plastic film covering mat­ 2. Robert Thacker Kestrel 1723 rested on her tow hook with one wing erial does not have the "skin strength" 3. Robert Andris T-53 B 1678 down on the turf. A light gust of wind o f fabric or even paper covering mater­ 4. Marshall Watson 2-32 1617 caught her tail and her higher wing tip ials. When you heat-shrink the films, and spun her around on the tow hook Fourth place in each flight category they pull up tight enough to eliminate pivot in a near human pirouette. A was awarded a year’s subscription to the wrinkles and then they stop shrink­ saucy finale for the admiring crowd. “ Soaring” courtesy of the Soaring ing, no matter how much more heat you The world famous trademarks of Du- Society of America. Each registered apply. Anyone who has used Super Bro Products, Kraft Systems, Midwest contestant was presented with a com­ Monokote or Solarfilm knows that the Products, Model Airplane News, Orbit memorative transmitter plaque inscribed materials are tough but flexible. Solar­ Electronics, RC Modeler and Top Flite “ LSF I97I RC Soaring Tournament.” film is more flexible than Monokote, Models were each displayed on king In case you’re not aware, the League however. For this reason, as claimed, it size banners on the silver hanger doors. of Silent Flight is a world-wide organiza­ w ill pull around smaller radius compound Grouped around the distinctive LSF tion of R/C soaring enthusiasts. Mem­ curves. But also for this reason, it has logo, the co-sponsor emblems were a bership in the League is open to any less skin strength than Monokote. backdrop to the awards table. serious sportsman. Information about We have seen Frank's Santana flying

The MODEL BUILDER 41 WORLD CHAMPS . . . Continued from page 20 tops o f loops. He was permitted to land TORPEDO .40R/C and await better conditions, and so did all of us. It was 2-1/2 frustrating hours before flying could be resumed. Fortu­ 44S e r i e s 7 IF nately for those waiting at Line 1, Mike The unsurpassed .40 Birch of Great Britain was about sixth for... man up. His dissertations on some of the comical aspects of modeling in England, particularly the exploits of show business/ modeler Will Haines, almost made us Performance sorry to see the ceiling lift. In Round Two, our ABCDE judges Pattern were exposed to the second half of the fliers, which included Matt, Whitley, Chidgey, Schadcn, and Hardaker. We rated Liechtenstein's Matt and Great Britain’s Hardaker as the best in this round. Both put up excellent flights with many eights and nines on our score. Matt, for some reason, blew the spin. In spite o f this, his flight turned out There is no .40R/C that will give better control from top speed to dependable to be the third highest o f the meet at idle than the TORPEDO .40R/C “ Series 7IF" with front rotor. Equipped with K&B’s exclusive no tension, single ring and aluminum piston, it features a 6925. The spin came back in Round hemispherical head machined from solid aluminum bar stock and an especially Four to haunt Matt again. At this time, designed Perry Carburetor. Coupled exhaust/intake throttle control linked to the his second highest flight o f 7040 would Perry Carburetor provides instant response . . . from the slowest, smoothest idle possible . . . to top speed. Here is Performance Pattern Flying at its best! have been higher than Bruno’s 7075 and he would have been the World Champion. K&B MANUFACTURING Consider the fact that 40 points, the DIVISION OF AURORA PRODUCTS CORP. difference between Bruno’s and Wolf­ 12152 WOODRUFF AVE. DOWNEY. CALIFORNIA 90241 gang’s totals of over 20,000, was less than one point on one maneuver on one on many occasions and the wings char­ from all groups who have held QM judge’s score sheet in one flight! In acteristically flex to a certain degree. races, particularly in regard to their retrospect, Matt was truly the better They even flexed somewhat when cover­ rules suggestions. We will publish these flier, as judged and scored, yet the failure ed w ith silk. When going through bum py for others to consider and ask for your to spin cost him e thc.hampionship. In air it is fascinating to watch the Santana's comments. If enough inlormation comes both flights that we watched, the ship dihedral change up and down as the in, we will establish a separate QM col­ dropped o ff into a spiral, meaning zero fuselage continues in a straight line. umn and assist in getting an association for the maneuver. We are sold on the use o f the mylar started. What’ll it be, QMPRA? According to Roger Hargreaves, Team films for covering models, just as many The following simplified rules are be­ Manager for Great Britian, Dave Hard- other modelers are, but the skin strength ing used by the Northrop (no, not me... akci, only 24, is the hottest flier to come factor should be kept in mind when the aircraft company) Model Airplane along in some time, but is not consistant. building glider wings, particularly ones Club. We particularly like the idea of His 6640 was the second highest in which are lightly built with a great deal stock engines and prop. Do you have Round Two, and the one flight of the of open framework. When building our any ideas on how to keep it that way? meet for him when he was able to put Cirrus wings, and anticipating hi-start Engine: Stock Enya .15 or O.S. everything together. launching, I/1 6 by 1/8 inch diagonals Max .15, with throttle It was particularly interesting to see were installed from the spar to the (we assume other makes Roger place himself on the far side of the trailing edge between all ribs. The total are eligible as long as runway, directly opposite Dave, thus weight added was less than an ounce, they are available to all). providing a handy reference spot for but by comparison with unbraced Cirrus Prop: Stock 7 x6 nylon. centering of the maneuvers. wings covered with Super Monokote, Wing: Monoplane; 300 sq. in. Ron Chidgey and Jim Whitley both our wings were considerably stiffer and minimum area and 7/8 put up flights that we rated at about 75, less susceptible to flu tte r in high speed inch min. chord thickness and their resultant scores were consistant conditions. · at fuselage side. with this grading. Ron very noticably lost Biplane; 300 sq. in. mini­ heading going across the lid of the Top PYLO N, . Continued from page 28 mum area and 5/8 inch Hat but other than that made an excellent from active participants. min. chord thickness. flight. The MODEL BUILDER will be glad Fuel: Sport, not over 20% nitro. Talking about the U.S. Team, and Ron to act as a clearing house to get this Appearance: Semi-scale of racing air­ in particular, many of the modelers organization started. Not only that, since craft. present wondered what the final outcome your editor is also AMA Contest Board Fuselage: 2 1/2 inch min. width, 5 would have been had there been anything Chairman, all rules proposals w ill end up inch min. height at pilot. other than the almost dead calm that here anyhow. We would like to hear Weight: 2 1 /2 lbs. min., 4 lbs. max. existed throughout the competition. 42 The MODEL BUILDER It was reputed by several European modelers that Bruno Giezendanner is strictly a “ dead air” flier. His latest style of slow, tight maneuvers would support R/C TRADE-IN this. Ron Chidgey, on the other hand, is one of the best windy weather fliers we PECIAL have ever judged. His win at this year’s Nationals in the windy city of Chicago is an indication of this ability. AT It was Ron, several years ago, who taught us a valuable lesson in accurate HOBBY WORLD judging. Never compensate your score because of weather conditions, particular­ Your old R / C set is worth a lot to you at Ilohhy ly gusty wind, which raises havoc with many otherwise top-scoring contestants. World when you trade to a newer set of your When others are getting bumped all over ehoiee. Trading it in the “ Boh Reuther Way” the sky, Ron makes it appear that he is is simple! Send your old "ear to me. Boh flying in a corridor of dead calm. Reuther. for appraisal . . . you will he told The only others to put up over 6,000 what trade-in value it has . . . if it isn’ t worth point flights on Line 2, Round 2, were what you think it is, I’ ll send it hack to you and Ferdinand Schaden of Austria, and Mike the postage will he on me. Birch, England. KazuoShimo, Japan, who has only been in R/C aeromodcling for When you fiet my deal, you’ll he happy you let two years, was just under, with 5975. Hohhy World show you how to save the BOB Pierre Marrot, many times French REUTHER WAY! R/C Champ, and fourth finisher in Bremen, showed signs o f not enough practice, and was not the sharp, smooth, BOB REUTHER’S confident flier of past years. His maneu­ vers were also placed much too close to the judges. 6602 HIGHWAY 100 TENNESSEE’S Mike Birch’s flight, his best o f the meet NASHVILLE, TENNESSEE 37205. U.S.A. at 6065, showed extremely smooth and 24-HOURS LARGEST DAY (615) 356-1225 round loops. The low fuselage profile of NICHT (615) 352-1450 SHOP his Capricorn design might have affected the roll maneuvers, but no one could say the wings weren’t dead straight. Service is our Strong Point Rich Brand o f South Africa put up BANKAMERIC ARD and MASTER CHARGE credit card orders accepted. his best flight in this round with the latest model in his “ Panzer” series, a very the U.S., some Europeans, notably Matt although it was outside of both circles. smooth design with large radius rounded Wester and Prettner, place their trans­ This brings up an interesting yet wing tips not usually seen on modern mitters in a plastic or wooden cradle puzzling matter for consideration. In R/C aircraft. which is slung from two straps around FAI scoring, the landing, no matter where Poju Slephansen, a long-time World the neck and shoulders. The cradle is first contact is made with the ground, is Champs contender from Norway (the positioned so that the sticks are just at judged and scored for perfection. If that name is pronounced Pie-yoh) was flying comfortable arm’s length, at or slightly first contact is made inside the 15 meter his Maximum-10 design, another in a long below the belt. May seem strange, but (about 48 feet) diameter circle, the land­ series. The ship has an unusual fish-like, look where they ended up in the contest. ing points are multiplied by a factor of high fuselage profile; flat along the In spite o f the late start, Round Two 15. If the landing is inside the outer, 30 bottom with an airfoil-like curved top. was completed, and following a short meter (about 97 feet) diameter circle, the The canopy, with pilot and navigator break for of ficials, Round Three was one- landing score is multiplied by 10. Outside enclosed, begins immediately aft of the third completed by the 7 PM curfew. of both circles, the landing is multiplied side-mounted HP61. Poju won a special During the break, three judges from each by a factor of 5. trophy, presented this year, for the best line exchanged places. Two judges each Strangely enough, competitors don’t original design entered in the competition. including chiefs Bill Northrop and Nor- appear to have thought about this too Stephansen is also noted for his bert Trumpfhcller, remained at their much...not even some of the best. Many unusual method of holding the two-stick first-assigned post throughout the contest times we saw planes coming in beautiful­ transmitter (Kraft) while flying. He places The groups were now ABHIJ (Line I) ly, slow, tail down, wings straight and the base of the transmitter against his and FGCDE (Line 2). then suddenly. . .whumpl. . .a landing chest, just under his chin, holding the Masahiro Kato made his best flight worth no more than 1 or 2 points, with sticks between thumb and forefinger, the of the contest in this first portion of stopped propellers, several bounces, er­ remaining lingers being wrapped around Round Three. Kato, a team member in ratic rollout, and so forth. Why? Because the side and back of the base to hold it 1965, and five times the R/C Champion all o f a sudden the pilot saw that inner in position. of Japan since 1963, put in a good all- circle flashing past his plane, which was In direct contrast to this, and the around performance. His landing was one still a foot or more in the air. In desper­ typical waist-high, elbows out style in of very few good ones by any competitior ation the smooth landing was sacrificed The MODEL BUILDER 43 take anything from Bruno’s flight, which was his third best score, the weather “CALUMET MUFFLERS couldn't have been better. It was so calm that a microfilm model could have to IO Decibels Quieter circled for 10 minutes with hardly any with MINIMUM rpm loss drift. Italy’s Benito Bcrtolani was up

FEATURES next, and after watching about 75 flights, • Double expansion chambers we finally saw a properly executed spin. • Shorter, Compact design Most pilots snap rolled into the spin, • Universal mounting received zero’s for spiralling, or badly • Light weight fcH-4 .09-.19 $4.95 missed heading on the pull-out. Ron Q*-5 .29-.40 5.50 • Hardened steel bolts, Chapman very generously gave us a four- strap and gasket incld. EM-6 .4 5 -. 80 5.95 For Testor/McCoy 21 S e rie s: turn spin, but such a favor could only be EM-4T .1 5 -. 19 $4.95 SEE YOUR DEALER rewarded with a zero! EM-5T .29-.35-.40 5.50 It.·»»·- will JJ« '·■ ··■ KoosTromp of the Netherlands made »·*« odd 15* S.-1 35< >»■ rUvt»*WHO CWfAlOG TATONE PRODUCTS 4719 Mission S»., Son Francisco. Calif. 94112 a maneuver correction that was new to us. Going into the 3rd position o f the in order to get that precious 15 m ulti­ fine flight in this round, which we rated Four Point Roll, he overshot the stop, plier. at about 70. Emil’s flying was among going to about 300 degrees. Without But what good is 15 times 1 or 2 the most consistant of the meet, his batting an eye, he backed up 30 degrees, points? At best 30, maybe 45 for a 3 scores varying only a few hundred points stopped, and then rolled on to the pointer. But how about an 8, or even a from round to round. His best score was upright, fourth position! Try that the moderate 5 or 6 in the outer circle? a 5995 in Round Four. next time you’re flying your favorite There, a landing score would earn 50 to Next to last flight of the day for our aerial badge! at least 100. Even an 8 or 9 landing group was performed by Hanno Prettner. We had another look at Phil Kraft in completely outside of all circles would To the best o f our knowledge, Hanno, at this set, but the flight, though one of his be better than a controlled crash for the 20 years o f age, was the youngest con­ three best, was marred by two problems. 15 multiplier. testant this year. His flying is of the same In the Four Point Roll, his first stop was To me, the landing is not only a test brilliant, positive, and smooth style as at about 75 to 80 degrees. The other of skill, but also of pilot cool. To Matt and Wester. In fact, Matt and problem was positioning. The roll maneu­ continue on with a decent landing when Prettner compete against each other on vers, in particular, were o ff center as a you suddenly realize you’re missing the many occasions in the European contest result of starting too late. These were inner circle, takes a great deal of self- circuit, and for the record Hanno is actually quite minor faults as his score restraint, but in most cases, it ’s worth it. more often the winner. was still 6230. Incidentally, there were It was surprising to see so many top As with most of the top fliers, Hanno’s only 30 flights scoring 6000 or better fliers give in and go plop! entire competition flight is one, long out o f 240 tries. Anyway, back to Round Three, but continuous maneuver. The turn-arounds Krijn Sliedrecht, Netherlands, had the still speaking of landing! The fog, haze, and positioning passes are just as smooth, the dubious distinction o f being the first and low ceiling had persisted all day, and precise, and flowing as the actual maneu­ competitor to make an official flight in although we could hear full scale aircraft vers. The only thing that marred an sunshine, near the end o f Round Three. from time to time, we couldn’t see any. otherwise near-perfect flight was the Fortunately, by this time of day, the sun However, while judging Australia’s Brian spin, which was half spiral. Since Hanno was well out of the way of normal flight Green, our attention couldn't help but be and Wolfgang were using basically the paths, and only caused problems for pulled away from his model, as the same airplane design we wonder if this those contestants who were not so skilled sound of a throttled back radial started is a negative characteristic, or is it the risk at placing maneuvers so as to keep their getting closer and closer o ff to our left. they take in trimming to get the rock­ planes away from the sun. Suddenly, out of the overcast and dead steady flight path that was so nolicable In Round Four at Line 1, we were to on line for the runway loomed a Cessna throughout the performance, and typical see top runners Birch, Marrot, Schaden, 195. of a forward C. G. Whitley, Chidgey, Matt, and Hardakcr. We can imagine the thoughts ol that Saturday morning started out pretty With scores so close, most of these fliers uninformed Cessna pilot, relieved to find much like Friday, except that the ceiling were changing positions constantly. the runway in all that soup and then, in was high enough not to interfere with Birch again showed his supremacy in the same breath, finding said runway flying. It was beginning to look favorable the tound maneuvers, but could only overrun with pedestrians. The pilot's for completing four complete rounds. muster 5595, his third best flight. corrective reaction was quick, however, Our line picked up where it left o ff Marrot was still obviously way off of and as he jammed on full throttle, cleaned Friday, about one-third of the way his past form. Too much aileron control up, and pulled back into the overcast, through Round Three. showed up in short, choppy rolls, obvious Brian brought his ship back over the First up at 8 AM was Japan’s highest wing leveling corrections in round maneu­ runway and picked up where he had scoring competitor, Yasufumi Sugawara. vers, and jerky Slow and Four Point left off, with extended time, of course. This turned out to be his best flight of rolls. 5640. Perhaps this incident relieved some the meet at 6215. He received a well Ferdinand Schaden put up a very tension, as this was Brian’s best flight of earned applause from the early morning smooth flight with his stretched-Cherokee the meet. spectators. There were three 9 point styled plane. The 6 0 10 flight was his Emil Giezendanner, Bruno’s older scores on our sheet. third best and eventually put him in 8th brother, and another “ graduate” of the We also gave three 9 pointers to the place. 1968 FAI Judges School, put in another next I Her, Bruno Giezendanner. Not to Jim Whitley, in the opinion of this

44 The MODEL BUILDER writer, put on the best performance of the entire meet up to this point in his AVAILABLE NOW last flight. Every maneuver was right on. . . , .. — -—rr.-aL·.* We rated it a 90 on our own scale, and the applause from fellow competitors, spectators, and flight line officials as - ■ : "Daddy Rabbit V II’’ rolled to a stop, ■*· - . · verified our feelings. The joy was short lived, however. Because o f a relatively minor problem it became our duty as Chief Judge, to see Jim’s score by one of the other judges. It was simply a matter of agreement as to which circle Jim’s plane had touched down in. Judges were instructed that all must agree on this matter, although each RADIO CONTROLLED HUEYCOBRA HELICOPTER landing score was still his own opinion. PRECISION MACHINED MECHANICAL PARTS KIT - DETAILED FIBERGLASS FUSELAGE with assembly instruction Because we were holding his score Cooling fan, clutch flywheel, clutch housing, fan in English - weight 36 ounces - 73 inches long - 55.00 housing, starting belt, transmission with 6 high speed sheet, we couldn't help notice the points ball bcorings, tail rotor assy, aluminum motor & trans­ COMPLETE MODEL HUEY COBRA HELICOPTER KIT - All he had given J im on the flight. Most were mission mounting plate, main rotor shoft, swash plate parts os listed (less balsa stringers & plywood formers, assy, main rotor ossy, rotor see-sow, blade holders, skids, training gear & wheels)...... $500.00 on the low side in our opinion, but a flexible tail rotor shaft with couplings, all spcciol hard­ score of ONE point for a near-perfect ware, bolts, nuts, Allen wrenches, etc...... S375.( Prices quoted are F .O .B ., Tustin, CA - Add 5°c Freight spin was too much for this writer. We FULL SIZE PLAN with English details, Illustrated Parts Catalog, and Ports Price List - ...... 10.C MODEL HELICOPTERS asked il it was a one or a seven. Many MAIN & TAIL ROTOR BLADE KIT - M illed hardwood 14695 Candedo Ploce, Tustin, Californio, 92680, USA Europeans put a long tail on a figure one, and shaped bo I so for exact airfoil, covering, etc.. 7.( and we knew this, but we were too several common faults shared by many fliers seemed to specialize on either stunned to let it go by. Sure enough it fliers, from the top to the bottom o f the round maneuvers or straight ones. If a was one, and the judge’s reason was that points list. There were very few good contestant did good outside loops, you he did not feel that Jim's plane really was takeoffs. Most all fliers jumped their could expect good inside loops, Cuban spinning, but rather, had spiralled! Oh planes o ff the ground instead o f flying Eight, and Horizontal Eight. If he did well, e’est la guerre! The 6415 score, off. Possibly adjusting the landing gear a good Slow Roll, then you could expect Jim’s highest, put him in 6th place. fora positive angle o f attack would help, a good Four Point, Inverted Straight RonChidgey’s flight was close behind since the jump seems to occur as a result Flight, and Three Rolls. The top fliers Jim's at 6400 and the same score he had of the necessity to rotate on the main could do both round and straight, the in Round Two. In our judgement, off- gear to get the nose up, causing a sudden poor fliers neither. center positioning was the only thing lift-off. Wolfgang Matt’s Super Star represents that hurt Ron in this flight. The score Spin entry caused more downgrading what is currently the most popular air­ put Ron in 7th place and gave the U.S. than incorrect pull-out in our opinion. craft design concept for precision aero­ team a fairly wide margin for first Very few stalled out and fell into a spin. batics. The basic layout was first con­ place in the Team Results. Many were snap-rolled into a spin and ceived by Fritz Bosch of Germany, with Later in the same round, Wolfgang some, o f course, spiralled in the first his Delphin series, starting about 3 or 4 Matt pulled out all o f the stops and put turn, and spun on the last two. years ago. A variation of the Delphin up the second highest score of the meet Generally speaking, we scored lower was kitted by Ernst Topp, in Germany, at 7040. It was a masterful flight. Many on the relatively easy Rectangular going by the name o f Flipper. There were who saw it remarked that the perform­ Approach than any other maneuver in several Mini-Delphins and Flippers in ance was a precise enactment o f the the schedule. Time after time the pilots use this year. written description of each maneuver... would fly too far on the downwind leg, The design features a fuselage profile except that @$*/ spin! We scored it finding themselves on final with only a somewhat like a Clark Y airfoil; flat along higher than any other flight during the few feet of altitude yet miles from the the bottom, and curved on top. The entire championships, though only a landing circles. Invariably, they would canopy is blended in as part o f the small amount better than Whitley’s flight have to add some throttle, pull the nose upper fuselage profile, usually starting o f about two hours earlier. Apparently, up, and struggle sloppily to maintain immediately behind the engine. Many however, we had closer agreement from altitude until reaching the landing area. times it is just part of the fuselage the other judges this time! Undoubtedly the let-down after the ex­ structure and is painted on as part ol With most of the top places pretty hausting tension o f a pattern flight the decor. The engine is side-mounted. much settled by now, we imagine it was brings on a certain amount of careless­ The wing is a double-taper, 18 percent difficult for Dave Hardaker to "get up" ness, but when you consider that the symmetrical, spanning about 62 inches, for his last flight, only two from the rectangular approach can be worth just with strip ailerons. Elevator is hinged to end o f the contest. After blowing the as much as a Double Immelman, a Cuban the stab at the top, in typical inset Figure M by falling over backward on a Eight, Inside Loops, or the Horizontal aileron style...no air gap. The rudder, stall turn, he rather methodically finished Eight, why not take advantage o f il? contrary to the American trend, is not a out the flight for a very respectable, but Landing quality vs. point of touch­ barn door. The high fuselage profile uninspired 5695, putting him in 10th down was discussed earlier, but competi­ apparently presents enough flying surface place, highest of the Britishers and tion fliers should think about it some when the plane is on its side in the placing them in 4th as a team. more. Four Point and Slow Roll that large It was interesting to note how many To sum up the flying, there were Continued on page 47

The MODEL BUILDER 45 CLASSROOM. . . elevate your model a touch above the being drawn out. Beveling the tube at Continued from page 29 average. the top will assure prevention of blockage even if tube does touch top cures. Ordinary soap and hot water will FUELTANKSANDTHEIR INSTAL­ of lank inside. Ed.) remove uncured epoxy from “ infected” LATION. 3. Test' the tank for leaks prior to areas. Let the whole mess cure over­ A good tank installation leads to installation. The fact that you have a night. trouble-free engine operation. Before new tank doesn’t guarantee that it is Now comes the hard part. Use 250 installing a tank, the following precaution leak proof. to 350 wet or dry sandpaper and take should be taken: Installing the Tank: the epoxy all the way down into but not 1. Make sure the weighted pick-up tube 1. Tank positioning is relatively import­ through the top layer of the tape at the doesn't touch the bottom of the tank ant. The tank should be 50% above demarcation line. You can tell when you when held in a vertical position. and 50% below the fuel inlet tube of sand through when the tape starts to When using black tubing as a pick-up the carburetor as shown below: “ fuzz.” If you have done a good job tube allow about //2 inch o f clearance Any deviation will cause a slight with the initial application of filler, the because this type of tubing will swell change in engine run in the air. If the sanding is that much easier. I usually and grow with use. Surgical tubing tank is high, it will run rich and if it don’t remove the tape until the model will deteriorate with extended use so is low, it will tend to lean out. is completely painted, including trim. you should visually check the tubing 2. Position the tank as close to the Now comes the unveiling. The tape from time to time. engine as you can get it. comes o ff very easily when all epoxy is 2. Check the air vent tube and be sure 3. Pack foam around the tank so that it separated from it. It will leave just a slight that the end of the tube is close to will not rotate or vibrate, the latter ridge between the fillet and the canopy, the top, but does not touch the top will cause air bubbles in the pick-up no more than a trim ridge. The finished surface of the tank. (Air must be able line, causing lean or erratic engine product is well worth the effort and will to enter the tank to replace the fuel runs.

B e s/E-L. T O P Ο / - "

46 The MODEL BUILDER 4. When installing the tank in a model w ith o u t a convenient top hatch, it is much easier to bend hard lines and COSMIC WIND MINNOW extend these through a hole in the THE PROOF THAT BALSA DOES FLY BETTER...AND FASTER! firewall as illustrated. WINNER Formula / WINNER If you have ever tried to “ fish” a pair of rubber tubes through a firewall 1969 Nationals 1970 Las Vegas from the rear, you know how difficult 1970 Nationals 1971 Nationals it is. More importantly, the chance that the rubber lube can get crimped is excellent. The hard tube concept not only eliminates the chance of crimped tubes, it also prevents tank rotation and is simple to install, * 4 2 . 9 5 therefore, the extra work docs pay dividends in reliability. The new soft bend brass tubing makes the job easy. Plastic tubing can also be heated and formed to shape to accomplish the Hi Speed Foam Core Wing same thing. If the soft Pylon brand Molded Canopy, Cowls, & Pants JACK STAFFORD MODELS (Sullivan) brass tubing is not available Formed Cross-Torsion-Bar Gear T2T11 BEATRICE ST. you can make your own, as follows: Custom Cut Aircraft Balsa & Ply CULVER CITY, CA 90230 Using pliers, hold a piece o f brass Complete Plans, Instruction & 3-Views (Send Stamp For New Catalog) tube at one end and heat the rest, using a blow-torch or similar hot-flame source, until the tubing is orange-red. production kit, and many very thinly Meteor. Then, simply put it down on an disguised original copies, were flown by Possibly a new record, and a healthy unscorchable surface to cool. Do not contestants from about 12 out of the 22 one at that, was established in the dump it in cold water, but allow it to countries represented. Including the variety o f radios used. We counted 26 cool slowly. It's then ready to bend. whole family of Delphins, Flippers, and including two homemades. Kraft lead Super Stars, we counted about 20 out of with 8, followed by 7 Simprop, 6 each The important thing when bending the 60 ships entered as being direct or Proline and Skyleader, 3 each Digi-Fly, tubing is to avoid kinks. The simplest indirect decendants. Microprop, Multiplex, Futaba, 2 each method is to use a K & S tubing Surprisingly enough, Bruno Giezen- Robot, Graupner, Controlaire, and one bender set, consisting of various dia­ danner’s Marabu design, which he has each Heathkit, Royal Classic, Silvertone, meter sizes o f coiled wire. The brass now flown in winning two World Cham­ EK, Digiplcx, Orbit, CRC (Orbit), tubing is slipped into the appropriate pionships in a row, has not been copied Rowan, Radio Pilote, Dirigent, Vario- size coil, and bent. The coil prevents to any extent. The design was published prop, and O.S. There probably would kinking. as a construction article in Flug Modell- have been more, but the manufacturers Technik, the German model publication, ran out of names! For simple bends where beauty is of in April of 1970, and is a relatively easy From a judges point o f view, some no concern, merely bend the tubing plane to build. new rules are needed, both in flight in your fingers, frequently flattening Two other planes that impressed us line layout and judging procedures. the inevitable kink as it starts to form were Ferdinand Schaden’s “ Condor 71” When laying out the flight line, specific with a pair o f smooth jawed pliers. and Rich Brand’s “ Atomicpanzer”. Aus­ locations should be established for the trian Schadcn finished 8th with his judges and the pilot, judges should be 5. Last but not least, filter your fuel plane, which at first glance looks like a evenly spread out in relation to the land­ before you put it in the tank. I’ve slimmed-down and stretched Cherokee. ing circles, but not far enough apart to make communication difficult. The pilot seen filters both in the tank and The wings are double-tapered however, between the tank and the engine. and the fin and rudder are not swept. It should be required to stand near the To me, this doesn’t make much sense was the highest placed model without judges so there is no question as to the accuracy o f his verbal presentation. In because filters eventually clog and retract gear. your engine quits. If your tank never Rich Brand’s “Atomicpanzer" has some cases we had to watch for move­ “ sees” dirt then you can hardly get beautiful, yet functional lines. All flying ments o f the lips to verify that some­ into trouble. ♦ ______surfaces feature rounded tips. The wing thing was being said. A conveniently is set up high in the bottom of the located pilo t’s circle would eliminate WORLD CHAMPS. . . fuselage, and the pilot canopy is well this problem. Continued from page 45 forward. It is one of a long series o f A good point was made by Guy amounts of top rudder aren’t needed. Panzer designs with which Rich has been Revel-Morouz, the French judge. To There is an added bonus here in that the very successful. accurately appraise the quality o f the plane does not have to be cocked nose In the equipment department, Webra landing, a judge must keep his eyes high in order to maintain altitude during and HP dominated the engine choice, pretty much glued to the plane. This the knife-edge portions of the rolls, with 23 and 16 respectively, followed sometimes makes it difficult, particular­ making much smoother maneuvers. by 8 Rossi, 5 each O.S. and Supertigre, ly on a border-line case, to determine in Super Stars, some from Matt’s limited and one each o f Merco Enya, and which circle the plane first touched

The MODEL BUILDER 47 down. The spectator line judge, em­ duction or marketing of these kits)...The 9. Yasufumi Sugawara, 18160 ployed for the first time this year, could tremendous amount of work performed Japan step forward and determine the point of by local R/Cer’s, particularly the Greater 10. Dave Hardakcr, 17990 contact. It would then be the flight Pittsburgh ARCS, which supplied so Great Britain judge’s responsibility to look for the much of the necessary man-power...The line judge’s indication after the landing first international competition for R/C TEAM RESULTS, 10 PLACES is completed. One, two, or three fingers soaring and pylon racing. The F A I’s 1. U.S.A. 56700 held up would signal, inner circle, outer CIAM President, Finland’s Sandy 2. Switzerland 52140 circle, or outside respectively. Incidental­ Pimenoff, took first place in the soaring 3. Germany 51975 ly, although it is not clarified in the event with Graupner’s latest glider kit, 4. England 51810 rules, we considered a plane in the the Cumulus. Sandy started construction 5. Austria 51710 circle if only one wheel made it. The on this ARF kit during the overseas 6. Japan 51075 rules should be clearer on this point. flight and completed it during his stay 7. Italy 49515 As a result of considerable con­ at the motel in Pennsylvania. In pylon, 8. France 47595 fusion in past championships, a clearly the U.S. fliers all showed the best 9. Canada 46050 defined “ spectator line", the one which times by 10 second margins, all under 10. Belgium 45025 crossing over with your airplane is a big two minutes, with the Tclford/Violctl no-no, was established. As just men­ team taking first in all four heats plus INTERNATIONAL SOARING tioned, a line |udge was posted at each best lime to win the top hardware. 1. Sandy Pimenoff, Finland 1082 flight site to inform the judges (with a Although Bob Smith and Terry Prather 2. Dave Dyer, Great Biitain 1070 canned air-horn) when ever the line was both had faster best times than T/V, 3. Otto Heitheckcr, U.S.A. 920 crossed. Fortunately, we were lucky they also lost heats due to plug and nose- 4. John Nielsen, U.S.A. 910 that the weather cooperated by keeping over problems, and so placed 4th and 5. Carter Carlson, U.S.A. 845 the sun well covered during official 5th. By placing 2nd and 3rd Alan Mann flying. Had it not, with the morning and Aeromodeler editor Tony Dowdes- INTERNATIONAL PYLON sun being almost dead center across well proved that Great Britain knows 1. Telford/Violett, U.S.A. 16 the runway, the fliers would have been what it’s all about. No doubt, the five 2. Alan Mann, Great Britain 16 forced to swing their maneuvers away remaining countries in competition, and 3. Tony Dowdeswcll, 13 from the sun, thus running a strong those that watched, took enlightening Great Britain risk o f crossing the “ spectator line” information back home....The many 4. Terry Prather, U.S.A. 12 during a maneuver and getting /.cro. happy hours spent in breaking language 5. Bob Smith, U.S.A. 10 The “spectator line" at Doylestown was barriers with our great international in­ only about 30 feet back of the flight terpreter, model airplanes...The endless FULL-SIZE PLANS line. Much to close for the above onslaught of yellow-jackets that just (with instructions) situation. about drove all of us nuts; quite a few SERVICE The R/C Subcommittee should esta­ people were stung by them, some more blish a fixed, required “spectator line" than once. . .The memorable opening No. 11711 NANCY Scale-like, 96” span R/C glider distance that would allow for this and closing ceremonies, along with featuring easy construction. possibility. After all, the whole idea of trophy awards. By Jack Elam $2.75 the competition is to test skill in acro­ And best of all, the most satisfying No. 11712 BI-PRE*NTICE batics, not to test ability to fly in an feeling of close companionship with Training Type R/C biplane for obstacle course! people from all walks of life and corners fu n fly in g . Uses ,29-.50engines. Incidentally, we have put the words of the world. So it must be when By Bill Northrop $2.75 “spectator line" in quotes because the atheletes of many nations get together line, as it relates to real, warm bodied, during the Olympics and share exper­ No. 9711 BEANPATCH people-like spectators, is ficticious. Since iences, share funny stories, and share An EAA scale-like model for spectators, per se, are everywhere at a knowledge of home life. We all agree sport R/C. 45 power. contest o f this sort, fence or no fence, By Bob Upton $3.50 on one thing...if only the leaders of our • · · it is virtually impossible to tly a model nations would take long vacations and No. 9712 FAIRCHILD 22 anywhere without being over them. And let us run the world...... Scale old-timer for single chan­ since this is the case, and we all recog­ nel radio or free-flight. 020 nize it, let’s put the line a sensible dis­ pow er. AEROBATIC CHAMPIONSHIPS By Tom Lauri $2.25 tance from the landing circles...and call INDIVIDUAL RESULTS, 10 PLACES it what it is, the “ Zero Line” . 1. Bruno Giczcndanncr, 20315 Price includes 3rd Class postage As we said at the beginning of this Switzerland and reprint of building instruc­ tions. Add 35 cents for Special report, we would concentrate on the 2. Wolfgang Matt, 20275 judges view o f the World Championships. Handling. Add $1.00 for shipment Liechtenstein in mailing tube. Add 50 cents for We’ll leave it to the other publications 3. Phil Kraft, U.S.A. 19455 orders outside of U.S.A.. Calif, to tell you the rest, and there truly is a 4. Hanno Prettner, 19095 residents add 5% sales tax. lot more: The fabulous demonstrations Austria of total radio control of helicopters by 5. )osef Wester, Germany 19090 SEND TO : THE MODEL BUILDER Schultcr and Bruno. (The Kavan name 6. ]im Whitley, U.S.A. 18750 on the sides of the models resulted from PLANS SERVICE 7. Ron Chidgey, U.S.A. 18495 12552 DEL REY DR. his sponsorship of their trip to the U.S. 8. Ferdinand Schadcn, 18225 SANTA ANA, CALIFORNIA Mr. Kavan is not connected with the pro­ Austria 92705

48 The MODEL BUILDER R/C MULTI CHANNEL CONTROL LINE · STUNT PLANES

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