NOVEMBER 1975 volume 5, number 47 UILDER S1.25 Kraft Systems is proud to announce our new Signature Series custom radio control system. Combining entirely new electronic design concepts with custom assembly and a cost-be-damned approach to component selection, it is the only choice for the NEW! serious radio control enthusiast. THE WORLD’S FIRST PROGRAMMABLE RADIO CONTROL SYSTEM SIGNATURE SERIES TYPICAL LAYOUT SHOWN. Panel label is engraved with MAY BE VARIED TO purchaser's name and date of manufacture. RETRACT LANDING GEAR - CUSTOMER REQUIREMENTS. SLOW ROLL BUTTON Accurate Battery Voltage and R.F. Output Meters THROTTLE TRIM ELEVATOR TRIM- DUAL TRAVEL AILERON DUAL TRAVEL ELEVATOR - AVAILABLE IN DUAL AND Super precision instrument-type SINGLE STICK TRANSMITTER conductive plastic control poten­ CONFIGURATIONS. tiometers assure better than 0.1% resolution, less than 1% Open type control sticks are me­ non-linearity, and virtually unlim­ ticulously assembled to exacting ited life. Their very low friction tolerances. Stick lengths are ad­ design provides exceptional con­ justable. trol feel. AUXILIARY NO. 2 · AUXILIARY NO. 1 RUDDER TRIM ‘ AILERON TRIM Front panel slips off easily pro­ New multiplexed linear ramp en­ viding access to set up controls coder permits programming, is and adjustments. Controls can virtually drift free and gives linear even be adjusted in flight. control response. Customer may select location and function of programmable con­ These four switches determine trols. Each set is custom tailored direction of travel for controls to the individual’s requirements. specified. Adjusts travel of rudder servo ap­ Four turn instrument quality pots proximately ± 10%. Dual rate provide smooth, precise adjust­ not available on this channel. ment. Γ These adjustments control both the These adjustments control the amount of servo travel. The Adjusts pre-determined control position selected by a push­ direction and amount of travel of the “ long" or normal position of the dual rate selector switch button control. This could be, for instance, a slow roll switch, retractable landing gear servo. Since may be adjusted for a variation of travel of approximately a spin button, or low speed throttle button. This control is over-all travel can be increased, a ± 10%. The short travel position of the dual rate selector customer specified. Push-button control selection may be special 180° servo is not required to switch may be adjusted to select a reduction of up to 50% requested as an addition to the dual rate controls. In other ensure positive locking action. from the long or normal travel. Servo neutral is not affected words, you may select both control options if desired. by these adjustments. Limited production under the supervision of Steve Helms ensures meticulous quality and personal contact with the purchaser. Mr. Helms will also oversee repair service and follow-up. SPECIFICATIONS SERVOS DUAL-CONVERSION RECEIVER Any of our standard servos may be Is a specially designed companion unit to the Signa­ Size: 2.6"x2.4"x0.8" · Weight: 2.6 oz. · Batt. Voltage: 4.8v nominal · Current Drain: 16 ma. nominal · No. of channels: 7 · selected. Each will be custom as­ ture series transmitter. A new, improved linear A.G.C. sembled and tested to ± 0.25% res­ and 11 pole piezo electric ceramic filter provide the Sensitivity: 1 microvolt nominal · Spurious Response: Image— 70db down; all others greater than 70 db down · Selectivity: olution and ± 1% linearity. most interference-free reception of any receiver on All servos are directly interchange­ the market today. It is the result of a continuous two- 3 db down at ± 5.4 KHz; 60 db down at ±8.07 KHz · All standard frequencies. able and only one direction of rota­ year design effort. tion is required. WRITE FOR FREE CATALOG Worlds Largest Manufacturer of Proportional R/C Equipment 450 WEST CALIFORNIA AVENUE, P.O. BOX 1268, VISTA, CALIFORNIA 92083 FIRST CAME THE PACER-it started a whole new revolutionary category of model planes, the 1/2A pattern ship. Then people wanted a larger, fully competitive version with the same features--good looks, easy construction, sensible design, light weight, fuel economy, and solid performance at an affordable price. Here it is, the Super Pacer. For the economically minded pattern ship flier. All balsa and ply construction. Quick to build, light and sturdy to last long. It has to be a sin to get so much enjoyment out of the performance obtained at so little expense. Try your dealer first. You can order direct if he doesn't have it. Send me a Super Pacer. Enclosed is $32.95 plus $1.00 handling. Send me your complete catalog. Enclosed is $1.00 (add $.50 for 1st Class mail return.) MB AC E l R /C .lIn c .) BOX 511, HIGGINSVILLE, MO. 64037 1” scale ofwinningest DRAG N FLY 40 MK II-HY2A unlimited hydro in the Gold A hot competition racing model for .40 engine. 36" long, Cup Circuit. Pickle-forked pre-cut birch plywood construction. Includes bow provides maximum plans (only) for realistic topside hatch control. Sturdy birch and to help keep water out and create a mahogany plywood con­ streamlined shape for top speed. struction. 36" long, for .40 HY-3-28” availab!e for engine. A good, basic com­ NEW- .20 engine HY-l-44” available petition hydro for .40 engine PAYn PAK PP-20 for .60 engine. This new stand-off scale model of the national unlimited hydroplane champ is 30" long, 15” beam, designed for .20 engine and radio control running. Rugged ply­ wood construction. A great performer. .. even for the beginner! They don't come any faster, better designed, or better built. These kits are the leaders in stand-off scale as well as all out hydro-class competition. Stable and sure in the turns, and you can pull out all stops on the straightaway. ■ In calm or rough water, for fun or competition, Dumas has the easy riders . from hydro to deep vee. ■ Now available: Pre-packaged hardware kits with everything you need for running. Props for all models also available separately. A hardware kit for every model. See Your Local Dealer. If He Can’t Help You Write Us. See your hobby dealer or send 5CW for our complete catalog dumas Dumas Products, Inc., 790 South Park Avenue, Tucson, Arizona 85719 CARL GOLDBERG The Best in Flying with... VIKING-48” span. Hi-thrust for .049- Great CONTROL LINE MODELS, 051 engine. $7.95 from stable trainers — to stunt — to the exciting world of combat! ^ Well proven FREE FLIGHT CONTROL LINE MODELS MODELS, from simple to contest ships! SHOESTRING STUNTER-42” Top W1TTMAN BUSTER-40” Sharp stunt model for .19- 35 engine. stunt model for 19-.35 engine. FREE G14 $1 1.95 J RUBBER-POWERED MODELS, so G9 $11.95 easy to build, such fun to fly! FLIGHT MODELS RUBBER POWERED MODELS U 'L Wl ZARD-Shaped balsa COSMIC WIND-43" span for wing, die-cut fuselage, 21" soar» for 049 engine. G5 $5.95 .19 to .35 engine. G17 $11.95 1/2A BLAZER— Die-cut balsa. 40” span, for 049 engine. G1 $6.95 SHOESTRING RACER-18" span All die-cut balsa. 0 2 $2.95 o STUNT MAN 23-oTe-cul balsa BEAN-21*' span 23J4". lor .049- 09 engin·. Favorite 1/2A stunt model. For .049 Eng. 08 $5.50 G6 S5.95 RANGER 30-Die-cut balsa 30" RANGER 21— All die-cut balsa span, for .010- 049 engine. G2 $5-95 parts. 21” span beauty. D3 $2.95 € SAFTI-FLITE 1 /2 A HANDLE l it t l e TOOT— Sporty Biplane, for SWORDSMAN 18-Die-cut balsa 18" 049 engine, all die-cut balsa span, for .020- 049 engine. G3 $5.50 Best handle made. G4 $5 .95 RANGER 28-M y ” pre-fab plus peper" Including lines, 28” span, 2 colors 05 $2.95 only 79c. HI 1/2A FLYING LINE Dacron Thread-5 6 It Strong, mm. stretch For small control line models, hinging, etc COMBAT HL1 25c P-40 FLYING TIG E R -18" span, all 1/2A BELLCRANK balsa pre-fab for 049 engine Ll'L SATAN-19" span, 1/2A and HORN Nylon G il $5.50 combat-stunt for 049 engine. CESSNA 180- The champion of provides smooth %A control line operation G12 S4.95 business liners. 21” span D4 $2 .95 Easy on dacron lines, too BCH1 25c ENG. BRACKET for COX "290*' NEW! EB1 59c LONG BOOMS! SPIRIT OF ST. LOUIS and NYLON HORN! A miniature duplicate, r ---------------------------------------------- VOODOO-36" combat-stunt JUNIOR SATAN-29” span, 21” wings pen. Q1 $2.95 I Carl Goldberg Models Inc. for 19- 35 engine. Single kit G13 $6 .95 combat- stunt, for .16 to .19 4736 W. Chicago Ave., Chicago, II 60651 Double kit DG13 $12.95 engines. G20 $5.95 I am sending 25c lor 8 pg illustrated Catalog with Basic Explanation ol R/C Equipment and Radio Control Definitions A ll ITEMS AVAILABLE IN CANADA Name __________ _______ For b u t service, see your dealer lor items you went H not eveilable. write direct: edd SOd per item IS I outside U.S.Í. Minimum order $1. Address CARL GOLDBERG MODELS INC. 4736 WEST CHICAGO AVE.· CHICAGO, ILLINOIS 60651 State.Zip - NOVEMBER 1975 1 MODELS BUILDER presents the MASTER MODEL BUILDER Send all entries to: of the month MODEL BUILDER/PANA-VISE CONTEST 1105 Spurgeon St., Box 4336, CONTEST Santa Ana, California 92702 COLBERT INDUSTRIES, manufacturers of PANA-VISE, the unique hobby vise which turns and tilts to any position, in conjunction with MODEL BUILDER magazine, is sponsor­ ing a design competition for MODEL BUILDER readers.