S >580„0Ζ8>Λ volume 12, number 121 ■Sw L to R: Tony Bonetti-National Champion, Steve Helms and Donald Weitz, Jr. THE FINISHING TOUCH Tony, Steve, and Don didn't take 1st, 2nd, and 5th places at the 1981 Nationals by accident. Precision aerobatics demand the å most reliable and highest performance equipment * available for the best possible finish. The same off-the-shelf high quality components they used are J ( 1 available from your local Circus Hobbies dealerJ Whether you fly for sport or competition, these products are designed to help you become the best I pilot you could be. So, if you are serious about ^ your flying insist on JR Radios, Webra Engines wSSSSSi and IM Accessories, the Finishing Touch for every winner^ JR, Webra, and IM are imported exclusively by Circus Hobbies Send $1.00 for complete product catalog. New address: Circus Hobbies Incorporated, 3132 S. Highland Dr., Subsidiary of Circus Circus Hotels Las Vegas, Nevada 89109 0 1980 ASSOCIATED ELECTRICS Speclol soft racing compound front fires. (mounted/#3654-S) I (it fiberglass Aircraft alloy, 8-32 tlatheai screws. Vi" (#3324) and V /i" (#3325) avoiloble. Weightsaver fiberglass chassis. Precision die-cut, drilled and countersunk. (#3312) It takes a close look at a Factory car to see all of the tricks the Team has developed. Some, like precision ball bearings, (#3655/front and # 2 2 2 2 /re a r) you can't see at all. But what a difference it makes. Special, light­ weight fiberglass chassis plates. Featherweight alloy Associated captures the sleek flathead chassis screws. Even superflex, high-temp wiring Lotus 79 F t In M 2 scale. (# 3 7 3 1 ). They're all part of the Team's 'T ~ )— ' — i _ winning cars. - " '= · · ^ No matter how you look at it, the Associated RC12E is a winner. The RC12E was designed by racing enthusiasts for all-out competition. But the Team never stops looking for more performance. Track-tune your RC12E with the Team s selection of fiberglass chossis plates ROAR Nationols Expert Class 1:12 Scale Electrics Production Stock Modified Take a tip from the Team, use Genuine Team Associated racing products to keep 4 cell No event MRP RC12E 1978 your RC12E running up front. 6 cell No event RC12E RC12E Write or call for a complete catalog, and your 4 cell No event RC12E No event free action and info-packed issue of "Racing with 1979 the Team." 6 cell RC12E RC12E RC12E 1980 6 cell MRP RC12E RC12E TEAM ASSICIATID Associated Electrics/1928 East Edinger/Santa Ana/CA 92705 (714) 547-4986 FEBRUARY 1982 1 MODEL / FEBRUARY 1982 BUILDER volume 12, number 121 621 West Nineteenth St., Box 335, Costa Mesa, CA 92627-0132 Phone: (714) 645-8830 STAFF CONTENTS EDITOR/PUBLISHER Wm. C. Northrop, )r. FEATURES GENERAL MANAGER WORKBENCH, Bill Northrop....................................... 6 Anita Northrop OVER THE COUNTER, |ohn Elliot........................... 7 ASSISTANT EDITOR R/C WORLD, John E lliot............................................... 10 John Elliot FUEL LINES, Joe Klause.................................................. 14 ASSISTANT GENERAL MANAGER CHOPPER CHATTER, Ray Hostetler......................... 20 Dawn Holcomb HOW TO FLY PATTERN, Dick Hanson.................. 21 ART DEPARTMENT “ 1 TO 1” R/C SCALE, Bob Underwood.................. 22 Al Patterson ELECTRONICS CORNER, EloyM arez.................. 24 POWER TOOL SPEED CONTROL, EloyMarez 25 OFFICE STAFF Edie Downs THORNBURG AT LARGE, Dave Thornburg ....... 28 Debbee Holobaugh R/C SOARI NG, Dr. Larry Fogel.................................. 29 A. Valcarsel MARKS MODELS MINI-BIRD, Mary Ann Devlin 32 CONTRIBUTING EDITORS PLUG SPARKS, John Pond ......................... 33 Dave Brown Joe Klause ELECTRIC POWER, Mitch P oling............................. 38 )erry Dunlap Eloy Marez R/C AUTO NEWS, Dan Rutherford......................... 42 Larry Fogel Walt Mooney R/C POWER BOATS, Jerry Dunlap 44 Jim Gager Mitch Poling Bill Hannan John Pond SPORT SCENE, Larry Renger ...................................... 46 Dick Hanson Fernando Ramos CONTROL LINE, Dan Rutherford............. 48 Ray Hostetler Larry Renger FREE FLIGHT SCALE, Fernando Ramos.................... 54 Tom Hutchinson Dan Rutherford Ken Johnson Dave Thornburg HANNAN'S HANGAR, BillHannan....................... 56 Bob Underwood INDOOR, Ken Johnson.......................................... 57 ADVERTISING FREE FLIGHT, Tom Hutchinson .................................. 60 John Elliot Wm. C. Northrop, Jr MODEL BUILDER (ISSN 0194 7079) is SCALE VIEWS published monthly by RCMB INC., 621 DOUGLAS A02D-1, Nick Karstens 40 West Nineteenth Street, Costa Mesa, Cali­ fornia 92627. Phone (714) 645-8830. Subscriptions: $25.00 per year, $47.00 for CONSTRUCTION two years.Singlecopies$2.50. Add$3.50per year for postage outside the U.S. (except ACRO SPORTSTER "40” , Peter Neuer ............................................................. 15 APO and FPO). U.S. funds only, please. VIRGINIA CHAMP O/T, Richard Little......... ......................................... 36 Copyright 1982 by RCMB INC. All rights PROFILE "QUICKIE” , John Walker .....................................................................50 reserved. Reproduction without permis­ CO2 MESSERSCHMITT M33, Jack Headley ..................................................64 sion prohibited. Change of address notices must be received six weeks before date of issue that new address takes effect. Send old address with new: old label preferred. Post Office will not forward copies unless you pay extra Cover The Pacific coast at La Jolla, California, provides a sparkling background tor postage. Duplicate issues cannot be sent. Karen Rafsdal. San Diego, and Peter Neuer's red, white, and blue Aero Sportster 40. Construction article for the Aero begins on page 15 of this issue. As for more information Second class postage paid at Costa Mesa. Karen, you're on your own! Colorful 35-mm transparency by Peter Neuer. California, and additional offices. 2 MODEL BUILDER Changing track conditions can servo reverse switch­ Convenient needle talte send RC cars scurrying into the ing, electronic trim, adjustment knob. , pits for a linkage adjustment that mixing and throttle Exclusive torque compensation ^ could take laps to complete. Fine tune in the hand­ mixing control. The driver with Futaba’s 3FG some brushed alloy doesn’t panic though, because he case. Prefer Ikin-Mick control! has Total Control on his side. The 3-channel 3FG We’ve built the 3EG model for >ou. Available A flick of a lever and the system is available with with S26 or S27 servos. adjustable dual rate takes over. a wide range of servo options, too. Ultra mini for 1:12 scale electrics, while Increase or decrease steering S20 servos are perfect boat and gas car racers favor the servo throw while maintaining full lock-lo-lock control. The Gentlemen, choose tour servos. atertight, heavy-duty S27’s. 3FG gives vou a choice, on the track. And for total performance,, The deluxe 3FG/3- the 3FG can be ordered channel svstem includes An oversteering, R3F triple-tuned receiver. with high-torque, coreless 2-S24 servos. NiCads and sliding car charger. 27 and 72MH*. F ucaba motor S24's and recharge­ instantly able NiCad batteries. responds to the tu G O pre-set steering ratio and is dialed-in again. The 3FG system was developed by and for serious racers. In addition to rate control, you'll also find Futaba Track tune your racer from the driver’s stand with the new Futaba 3FG. YOU CAN’T GO WRONG WITH A CUB SCALE MODELS OF AMERICA’S FIRST POPULAR LIGHT PLANE The lull-scale airplane is a Reed Clipped Wing Conver­ sion, built up from a 1941 Piper J-3 Cub lor Hazel $59.95 Sigafoose. owner of Sig Mtg. Co. The airframe was com­ pletely rebuilt and 3-1/2 feet removed from each wing WING SPAN: 56 In. panel With a 75 hp. engine, the result is a highly LENGTH: 42 In. aerobatic airplane that is really a joy to fly With its blue and white sunburst paint job it is a great crowd pleaser. ENGINES: .19 to .40 BOTH FEATURING: KIT RC-26 Molded Control Hinges Strong One-Piece Wing H a fl Sia'i Stable Design Molded Engine Cowling Formed Landing Gear CLIPPED WING CUB Aluminum Engine Mounts Die-Cut Sig Balsa and Plywood $59.95 Full-Size Detailed Plans Die-Cut Windshield Trademark and Number Decals Built-Up Balsa Construction Removable Wing Struts WING SPAN: 71 In. A high value kit of one of the most popular scale models LENGTH: 42 In. KIT RC-3 ever produced Built up balsa construction produces a ENGINES: .19 to .40 strong structure without excess weight Light wing loading aids flying performance and stability. Without doubt the Piper J-3 was the most popular airplane ever PIPER J-3 CUB manufactured. The design is nearly perfect for R/C and makes a beautiful airplane that is easy to fly. THE 1/4-SCALE KITS YOU’VE BEEN WAITING FOR! Hot Λ ploA pdckoUjt . Hot λ im -fo i . $164.95 Hot <L pOAtud kit . a Su) cotttpldz, kil! KIT NO. RC-47 Unlike most of the Giant Scale "kits" that have been appearing ENGINES: .60 to 1.5 GLOW OR GAS lately, these carry the SIG trademark. That means you get: WINGSPAN: 86 INCHES A Professionally Engineered Flyable Design - Over Two Years in WING AREA: APPROX. 1300 SQ. IN. LENGTH: 67 INCHES Research and Developement WEIGHT: 14 15 LBS. Top Quality Sig Balsa and Plywood Precision Die-Cut Parts Molded ABS Plastic Engine Cowl Complete With Scale Engine t ø <%'* CLIPPED WING CUB Molded Plastic Bungee Covers and Air Cleaner Cover Fiberglass Elevator and Rudder Pushrods Aileron Pushrods and Bellcranks Scale Leaf-Spring Steerable Tail Wheel Strong Formed Wire Main Gear Adjustable Tail Brace Wires Colorful Authentic Decals KIT NO RC-48 4 Sheets of Full-Size Printed Plans Giant Photo-Illustrated Instruction Book Scale Data on the Full Size Airplane Value Packed Hardware Package That Includes: Nylon hinges RC links and threaded rods, nylon control horns, wing bolts blind nuts, and other assorted small hardware. e $169.95 ENGINES: .60 to 1.5 GLOW OR GAS WINGSPAN: 105 INCHES 7 WING AREA: APPROX.