ANEW GENERATION A new generation in radio control has arrived plug-in R.F. module that provides easy change with Kraft’s Gold Spectrum 6. It is the most between the 17 standard radio control frequen­ accurate, precisely engineered, programmable cies as well as F.M. All control adjustments six-channel system in the world. Kraft Systems, are located on a program panel mounted Inc., has led the field for over 20 years in major under a dust cover on the back of the transmitter. technological breakthroughs. Now we have There is even a special compartment in the dared to push even further than the rest. The transmitter to store the antenna when not in use end result can be yours. The new and smaller The transmitter has virtually every feature KPR-6C receiver incor­ you have dreamed of in a six-channel system. porates the latest Standard special features include: dual rate state-of-the-art circuitry elevator, dual rate aileron, 4-channel servo for unmatched perfor­ reversing, throw adjustments for rudder and mance and reliability. throttle, end point adjustment for elevator, A new dimension of radio control experience aileron and the fifth or retract channel, plus a awaits you. See the Gold Spectrum 6 at your nearest Kraft dealer now. Kraft Systems, Inc. 450 W. California Ave., P.0 Box 1268 Vista. CA 92083, (714) 724-7146 TWX 910 322 1471 because we wanted to make it K&B quieter!!! K&B quieter!1 ! K&B quieter!!! quieter!!! K& quieter!!! K&B K&B quieter! ! K&B quieter!!! quieter!!! K&B quieter!!1 quieter!!! K&B K&B quieter!!! K&B q &B quieter!!! quieter!!! K&B quiete ieter!!! K&B K&B quieter!!! K&B &B quieter!!! K&B .40R/C featuring a "Bolt-on” muffler with Pressure Tap The K&B .40R/C engine (No. 8011), long a of a secure muffler that maintains its low favorite for Sport Pattern Flying, R/C Scale, decibel reading. A front rotor type engine, it and the “Quickie 500” , has been modified to excels in its field and incorporates a large by­ include a “bolt-on” muffler. The unusually pass for more power produced by a unique quiet muffler is rugged in construction, con­ machining process. The crankcase has been temporary in design and fitted with a pressure modified to accommodate the “ bolt-on” muff­ tap. ler. This muffler cannot be used on the existing The new K&B .40R/C has the added advantage K&B .40R/C (No. 8011). Other features include: Ball Bearings · "Squish band” head · See it Exclusive K&B no tension, single ring and aluminum piston — no at your local Hobby Shop. long break-in period required. jOUSTW, They serve you better. they can provide assistance, answers and service. K&B MANUFACTURING 12152 WOODRUFF M E., DOWNEY, M 00241 OCTOBER 1980 1 OCTOBER 1980 volume 10, number 105 621 West Nineteenth St., Costa Mesa, California 92627 Phone: (714) 645-8830 STAFF PUBLISHER CONTENTS Walter L. Schroder EDITOR Wm. C. Northrop. Jr. FEATURES GENERAL MANAGER Walter L. Schroder WORKBENCH, Bill Northrop................................................. 6 ASSISTANT EDITOR OVER THE COUNTER, Phil Bernhardt ....................... 8 Phil Bernhardt R/C WORLD, Bill Northrop .................................................... 10 ASSISTANT GENERAL MANAGER Anita Northrop HOW TO FLY PATTERN, Dick Hanson....................... 12 ART DEPARTMENT Chuck Blackburn MB VISITS SIG MFG. CO., Bill Northrop ................ 13 Al Patterson FUEL LINES, )oe Klause................................................................. 16 OFFICE STAFF R/C SOARING, Dr. Larry Fogel............................................. 22 Mary Ann Bell Edie Downs R/C HANDLAUNCH UPDATE, Dave Thornburg 25 Debbee Holobaugh Pat Patton PLUG SPARKS, John Pond ...................................................... 26 A. Valcarsel “ 1 TO 1” R/C SCALE, Bob Underwood....................... 32 CONTRIBUTING EDITORS MRC ROUGH RIDER REVIEW, Larry Van Osten 40 Dave Brown Mitch Poling Otto Bernhardt John Pond HALF-A SCENE, Larry Renger ............................................... 42 Jerry Dunlap Fernando Ramos Larry Fogel Larry Renger ELECTRIC POWER, Mitch Poling...................................... 44 Chuck Hallum Dan Rutherford Bill Hannan Tom Hutchinson R/C POWER BOATS, lerry Dunlap................................. 46 Dick Hanson Dave Thornburg Joe Klause John Tucker HANNAN'S HANGAR, Bill Hannan.............................. 50 Walt Mooney Bob Underwood FREE FLIGHT, Tom Hutchinson ............................................ 54 FREE FLIGHT SCALE, Fernando Ramos.......................... 58 ADVERTISING MANAGER Walter L. Schroder CONTROL LINE, Dan Rutherford..................................... 60 CONSTRUCTION UDET U-12 FLAMINGO, Roland Baltes................................................................................17 R/C MODEL BUILDER (ISSN 0194 7079) is published monthly by RCMB INC., 621 S-4 “SHRIMPO" O.T., Malcolm Abzug..................................................................................30 West Nineteenth Street, Costa Mesa, Cali­ fornia 92627. Phone (714) 645-8830. IDEAL STINSON RELIANT, Collector Plan........................................................................35 Subscriptions $20.00 per year, $37.00 for two OHMSICK ANGEL, Randy Wrisley.............................................................................................36 years. Single copies $2.00. Add $3.50 per year for postage outside the U.S. (except PEANUT MARQUART MA-5 CHARGER, Don Butman................................... 51 APO and FPO). Copyright 1980 by RCMB INC. All rights reserved. Reproduction without permission prohibited. Change of address notices must be received six weeks before date of issue that new address takes effect. Send old address with new; old label preferred. Post Office will not forward copies unless you pay extra Cover: Jimmy Cushion, Liverpool, England, built this version of World R/C Aerobatic postage. Duplicate issues cannot be sent. Champion Wolfgang Matt's earlier design, "Super Star." We'd build one too, if it would give us the opportunity to meet Christine Gray! Photo by John O'Donnell, Cheshire, G.B. Second class postage paid at Costa Mesa, California, and additional offices. 2 R/C MODEL BUILDER The precision workmanship and quality yo come to know and appreciate in JAPANESE and video equipment is available for the ; R/C INDUSTRY. I JBPROPO • ^ K K d l \ 1 II II »< IkM M w a a / / ^ V M t4 ItA U N IM II ΙΙΙΙΛΙ M M g a w p Man r t)inv.',jiiods Noyajnv i * . r a f » T dezir-xaN Λ . 0* 1 O d C M k / W IMOIW UOMi ^ 1* 1/ . J P.0. Box 5215 and there's more ctøCUS Reno. Nevada 89513 The Number pne Choice of Sports Modelers. Competitively pniæd products with superior quality and workmanship. All units include servos, receiver, battery case (G2C-2S) or rechargeable batteries (D4C-4S) and necessary hardware. D4C-4S CLIP COUPON AND MAIL TO: CIRCUS HOBBIES INC., P.O. BOX 5215. RENO. NEVADA 89513 We’re interested in you! What are you interested in? □ Airplanes □ For Sport □ Boats □ Entering Contests □ Cars □ Both □ Helicopters □ Other__________ □ Other____ Name_________________________ Address_______________________ C ity _____________State_____ Zip ©1980 ASSOCIATED ELECTRICS An insider's look al a Factory RC12E Full weight- saver treatment, super Reedy rewind power and our slick, new VonLoc differential (Body-1 12 Ferror» 312P) SPED SIGHTS IF THE TEAM The power for the Team comes from the Reedy Modified 05... already twice the National champion. More than just rewinds, the hand-built Reedy's are indi­ vidually blueprinted to racing tolerances to provide Modified class drivers with canned dynamite. Each Reedy is also dyno-tuned, then bench run to perfectly seat the brushes and eliminate the need for "break-in." Diamond-trued Our Voriloc differential delivers total performance Fits all RC12E s with no modifications ond allows precise fine-tuning for maximum traction commutator A full winter's testing and a spectacular debut in the Western Regionals. The Team's top-secret differential was a winner right from the start. Our VariLoc is the proven racing differential for 1:12 Precision scale electrics, featuring adjustable limited slip action, light dynamic balancing weight and easy maintenance. The heart of the dual ball- Simply installed on any RC12E, the VariLoc puts all of competition-proven rewind. your power to the ground, all of the time. And the increased efficiency of the VariLoc increases your run time significantly. High performance products like the VariLoc diff and Reedy motors can give your RC12E the competitive edge you need. That's why they are standard equipment on the Team's factory race cars. ROAR Nationals Expert Class 1:12 Scale Electrics Production Stock Modified 4cell No event MRP RC12E 1978 6cell No event RC12E RC12E 4cell No event RC12E No event 1979 6cell RC12E RC12E RC12E TEAM ASSOCIATED Coll or write tor your tree copy ot "Racing with the Teom." Official Newsletter ot Team Associated. Associated Elecfrics/1928 East Edinger/Santa Ana/CA 92705 (714) 547-4986 f r o m BUI N o r t h r o p ' * Glen Sigafoose takes off in his Pitts Special to perform aerobatics during an intermission at the 6th Annual Sig IMAC Championships, just 5 weeks prior to a flight in the same aircraft that re­ w o r k b e n c h sulted in his death. The name "Sig" has become a household word used by modelers all over the world, and his loss is a shock that will be felt by thousands. • · · • The following editorial was written by NEWS FLASH!! are part of the toy pattern. If they are not Mr. Harold E. Martin, editor, and pub­ Results of the R/C Scale World Champs essential, they are toys. lished in “ The Montgomery (Alabama) The commercial world recognizes this Advertiser,” date unknown. It was PRECISION SCALE but wouldn't dare classify all the gadgets repeated in the Carrier Wave, news­ 1st Jean Rousseau, France 5082.4 · and gear men buy as toys. It's classified letter for the McDonnell Douglas Radio 2nd George Rose, USA 5081.9· under “ recreation,” to spare them Control Model Airplane Club, St. Louis, 3rd Mick Reeves, GB 5068.0 needling at home. Of course, it is 5th Bob Underwood, USA recreation, if it brings some pleasure, Missouri. Tom Walker, editor. It is well 6th Bob Wischer written, and suggests a direction you can Team pride of accomplishment or even status.