MODEL BUILDER JANUARY 1982 31 the Electronics Comer by ELOY MAREZ
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SVS80„0Z8<7Z //in/ //<ί/ Aftre ί/η· ro/·· t y f e 3 å e M e /i Why settle for less than the uncompromising quality and craftmanship of ŠR maker of the most programmable radio in existence! HERE ARE SOME OF THE FEATURES: • Dual Rate Elevator • Dual Rate Rudder • Triple Rate Aileron • Three Snap Roll Buttons • Preset Throttle Button • Elevator/Flap Mixing • Rudder/Throttle Mixing • Flap/Spoiler Mixing • Flaperon Mixing • Elevon Mixing • Servo Reverse Switches • Servo Travel Adjustment • Direct Servo Controller • Plug-in Frequency Modules Ή Ι Η Η ϋ P.O.BOX 5 2 1 5.RENO,NEVADA! SEND FOR OUR Μ ΡΛΟΕ COLOR CATALC J8C-4SF PLEASE INCLUDE S I OO FOR POSTAOE J HAN I Inboard World Endurance Record Set by the Magnum Racing Team / ? "nHH0“tS™ , using a Hughey 45 Rigger, they doubled the old time, turned 1240 laps, and more than tripled the distance for a total of 186 miles. CONTROLLED by XL SERIES Radio Control No. 9160 Channel System The same quality and reliability necessary for world record setting is found in all Airtronics XL R/C Systems. While record setting may not be of interest to you. the factors of quality and reliability should. For increased enjoyment of R/C you owe it to yourself to experience an Airtronics R/C System. See your local hobby dealer for more information on all of Airtronics and K&B products. POWERED by 7.5cc (.45) INBOARD MARINE RACING ENGINE 1 2160 W oodruff Ave., Downey, CA 90241 A DIVISION OF LEISURE DYNAMICS HOBBIES. INC 1000 FUEL Telephone: (213) 862-6583 Patronize your Local Hobby Shop. They can provide assistance, answers and service. World records are not new to K&B! K&B MANUFACTURING Of course we're proud to be part of the new record established by the Magnum 1 2152 Woodruff Avenue, Downey, CA 90241 Racing Team. The very accomplishment itself proves that the K&B 7.5cc A DIVISION OF LEISURE DYNAMICS HOBBIES INC Telephone: i213) 923-5493 Inboard Marine Racing Engine and K&B 1000 Fuel are products of quality and reliability. So that you, too, may enjoy the pleasure of reliable boating, we suggest you try this winning combination — an Airtronics R/C System and a K&B Engine using K&B Fuel. M O D E L S JANUARY 1982 BUILDER volume 12, number 120 621 West Nineteenth St., Box 335, Costa Mesa, CA 92627-0132 Phone: (714) 645-8830 STAFF CONTENTS EDITOR/PUBLISHER Wm. C. Northrop, Jr. FEATURES W ORKBENCH, Bill Northrop........................... 6 GENERAL MANAGER Anita Northrop O VER THE C O U N T E R , lohn Elliot ............... 7 R /C W O R L D , John Elliot.................................. 10 ASSISTANT EDITOR John Elliot BYRON P-51 REVIEW, Skip Ruff.................. 14 ASSISTANT GENERAL MANAGER C H O PPER C H A T T E R , Ray Hostetler............. 22 Dawn Holcomb JR R A D IO R EVIEW , Chip Conklin................. 24 “ 1 TO 1” R/C SCALE, Bob Underwood........ 26 ART DEPARTMENT FUEL LINES, Joe Klause..................................... 28 Al Patterson ELECTRONICS CORNER, EloyMarez........ 32 OFFICE STAFF R /C S O A R IN G , Dr. Larry Fogel....................... 34 Edie Downs PLUG SPARKS, lohn Pond .............................. 37 Debbee Holobaugh R /C P Y LO N , Jim Gager..................................... 42 A. Valcarsel R/C POWER BOATS, Jerry Dunlap............... 44 CONTRIBUTING EDITORS R/C AUTO NEWS, Dan Rutherford............... 46 Dave Brown Joe Klause ELECTRIC PO W ER , Mitch Poling................. 48 Jerry Dunlap Walt Mooney SPORT SCENE, Larry Renger ......................... 50 Larry Fogel Mitch Poling T H O R N B U R G A T LARGE, Dave Thornburg 51 Jim Gager John Pond H A N N A N ’S H A N G A R , Bill Hannan............ 52 Bill Hannan Fernando Ramos Dick Hanson Larry Renger CONTROL LINE, Dan Rutherford................. 58 Ray Hostetler Dan Rutherford FREE FLIG H T SCALE, Fernando Ramos........ 60 Tom Hutchinson Dave Thornburg IN D O O R FAI TEAM TRIALS, Jose Tellez . 62 Ken Johnson Bob Underwood FREE FLIG H T, Tom Hutchinson ...................... 64 ADVERTISING John Elliot Wm. C. Northrop, Jr. SCALE VIEWS MODEL BUILDER (ISSN 0194 7079) is published monthly by RCMB INC., 621 DOUGLAS A02D-1, Nick Karstens West Nineteenth Street, Costa Mesa, Cali fornia 92627. Phone (714) 645-8830. Subscriptions: $25.00 per year, $47.00 for two years. Single copies $2.50. Add $3.50 per CONSTRUCTION year for postage outside the U.S. (except MODEL BUILDER RAVEN, Dave Jones..........................................................18 APO and FPO). U.S. funds only, please. SUPER G SHARK COLLECTOR PLAN, vkstanzel .............................36 Copyright 1982 by RCMB INC. All rights reserved. Reproduction without permis Ed Lidgard...................................................................................... HI-HO, O.T., 41 sion prohibited. PEANUT LAIRD LC-DC, Wall Mooney...........................................................53 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: Skip Ruff, Taft, California, with his Quadra powered Byron P-51, using Futaba postage. Duplicate issues cannot be sent. FP-6FN radio. He modeled it after the "Mangia Pane" (loosely translated to mean "Free Loader"), owned by Bill Destefani, of Bakersfield, California. Flown by Ron Hevle, the Second class postage paid at Costa Mesa, big one placed First in the 1980 Silver series and Third in the 1981 Gold series at the California, and additional offices. Reno A ir Races. Skip reviews the Byron P-51 beginning on page 14. Photo by Alan Davis. 2 MODEL BUILDER WE PUT THE THRILL BACK INTO R/C* . been flying your Revolution I for five years. I know For a beginner in R/C Flying I feel you have come up the quality of your products and have been delighted to with a real big winner - both construction and flying . recommend your machines to my flying friends. Thanks keep up the good work. for another fine product that we can all afford! STANLEY A. LEWIS. Age 27 Florida RUSS RHUE. Age 46 California This kit is the most complete and comprehensive I 1 was surprised at how easy it is to assemble! have ever had. Assembly is a breeze with your fine PAUL MASTERS. Age 15 ■ Ohio instruction booklet and photographs. WELDON I. HALTOM, Age 32 · Texas . wanted one for years. I am truly amazed by the stability of flight I get from my Mantis. Prior to buying my I’m quite pleased with the way the kit was packed and Mantis I had flown only gliders, yet within 3 days I was packaged · it appears to be the best kit I’ve ever purchased. making coordinated turns, safe landings and nice long THOM AS C. HENRY, Age 35 Canada flights. I think the Mantis is truly a great helicopter kit! GUY ROY. Age 17 C alifornia It flys great, hovers very well.. .1 love it very much. Can’t wait until I get the new Super Mantis. I am sending you a The Mantis has a major acceptance here in Rio, picture of my new Mantis. I hope you like it. P.S. - Keep up because of the high quality materials employed associated the good work. Happy to fly the “ American R/C Way” . with an exceptional low price. That’s Great! FRANK R. CASPER. Age 28 New Jersey ANTONIO CLAUDIO JAMEL, Age 19 Brazil 'OUTSTANDING!!! Exceeds all expectations, we use I have long been desiring an R/C helicopter. At this O/S Max .40 . plenty of power! (after) 4 years flying full cost, yours is a dream come true!!! size aircraft, fixed wing, this model put the thrill back into CECIL R. PARRISH. Age 33 Illinois R/C. Look for more orders . my friends want one too! All claims of ruggedness gladly confirmed! Instructions are very clear. I’m glad to own a Mantis! CARL P. DEAL Jr.. Age 39 - Florida DAVID GUERRA, Age 16 Texas This is the finest kit I have ever purchased. I have been a modeler for 50 years — I am a tool maker and I know quality. This is the best! You may use this recommen MANTIS dation for advertising. FIXED PITCH H.H. MOORE. Age 62 Texas Still $169 Price subject to change without notice. American For Further Information Call or Write: (714)744-7533 R/C Helicopters, Inc. 635-11 North Twin Oaks Valley Road · San Marcos, CA 92069 ■ 4 MODEL BUILDER UTEST ADDITION TO THE M m * SERIES ENGINE SIZE: 60 WING SPAN 64 " SQ. IN.: 648 LENGTH: 48" RADIO: 4 TO 6 CHANNEL WEIGHT: 8 - 9 LBS. ^ S IG s f $89.95 MUS I ANG Designed by HANK POHLMANN K m * 8ftr~ IDEAL FOR RC SPORT SCALE OR SPORT FLYING An all new SIG kit of an old favorite. Designed for Sport Scale and Sport h e r e a r e t h e o t h e r k it s in t h e k w ik b il t l in e Flying. The Mustang has exact scale outline and the wing features tip camber and washout. Building instructions include photos showing op tional flaps and retracts installation. Molded plastic fuselage. RC super c hipm un k KIT KBRC 1 S84 95 SEE YOUR DEALER FIRST! TO ORDER DIRECT, ADD S1.00 POSTAGE FOR ORDERS UNDER $10.00. POSTAGE FREE OVER $10.00. NO C O D. ORDERS. SEND S2.00 FOR THE LATEST CATALOG OF KITS, ACCESSORIES AND SUPPLIES BY SIG AND OTHER MAJOR COMPANIES. SIG MANUFACTURING CO., INC... Montezuma, Iowa 50171 JANUARY 1982 5 When you come up with a good design, stick with it.