Model Builder November 1978
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MODEL / BUILDER volume 8, number 82 $2.00 NOVEMBER 1978 ÅA THE, r„_ MJARINEB PLEASURE YACHT Handsome, rugged fiberglass, Ilat bottom, semi V contour tor stability Almost 40" long. MRC-Enya 35IIITV Marine installed. THE COBRA JET SPEED BOAT Sturdy fiberglass with brightly colored gelcoat finish. 36" long. MRC-Enya 40TV Marine installed. (Radio equipment shown is not Included) JUST ADD WATER AND ΕΝΙΟΥ Turbo-Trol jet drive, which comes installed in each boat, means there’s no prop or MRC's ready-to-float boats t rudder to damage .. you get increased maneuverability, and can run in reverse. come complete with engine and hydro jet propulsion system installed Complete from stem to stern . and that’s just the beginning. These two impeccably finished fiberglass beauties signal a new generation in ready-to-run kits. Each is complete with engine, there’ll be no weeds in your prop, or major dam muffler, Turbo-Trol hydro jet propulsion system, age if you should hit a stump. While a two channel control rods, fuel tank, starter belt, and even glow radio is all that’s needed for either of these two plug installed. No hardware to buy, no long hours runabouts, a third channel will let you control of assembly. We’ve even included a pre-formed, reverse thrust of the Turbo Trol for backing up. fiberglass, waterproof box with clear cover to hold What’s more, this new MRC jet drive lets you turn your servos and receiver. Just install radio gear, on a dime, and maneuver like never before. seal the box, start your engine and sail away. THE PRICE IS RIGHT . and when you consider Run anywhere, even in reverse . unique Turbo you’ve nothing to buy, most everything is not only Trol jet drive in each boat replaces conventional included in the box, but installed, you’ prop and rudder assemblies. So if by chance you find each an exceptional value. MRC’s run your boats up on shore, there’s no prop or ready-to-float yacht or racer . for rudder to bend. And with the impeller inside, immediate enjoyment just add water. See them both complete and ready-to-run at your hobby shop. MODEL RECTIFIER CORPORATION, 2500 WOODBRIDGE AVENUE, EDISON, N.J. 08817 L [ CARL GOLDBERG ^ w \ ( Me NEW ΜΛΡΖΚ I I AREA 558" SQ. IN. WEIGHT AV. TO 5% LBS. FOR .30 TO .40 ENGINES and 4 CHANNEL RADIO The newly updated Skylark Mark H is a sharp, sport airplane with many new features, strong construction, and great flight performance! If you want a fun- to-fly ship with pattern capability, here's why the Mark Π is the one for you! Wider and longer front end Stronger wing with new sym for larger engines and tanks. metrical airfoil. Sufficient thickness for retracts. Sim Complete hardware, includ plified wing "bolt-on" op ing new snap-on hatch hold tion illustrated. downs, hinges, wing skids, etc. Streamlined canopy, detail molded cockpit, and large Tapered ailerons, and full decal sheet. aileron hardware. Greatly improved plans, with Heavy duty landing gear and large, well-organized build steerable nose gear. ing illustrations. Strengthened and simplified fuselage construction. K it G 2 I I I 4 9 9-5 For best service, see your dealer. If not available, write direct; add 50ζ per item ($1 outside U.S.). AVAILABLE IN CANADA CARL GOLDBERG MODELS INC. 4736 WEST CHICAGO AVE.· CHICAGO. ILLINOIS 60651 IN THE BEST CIRCLES, ITS ttber skiver A PRECISION INSTRUMENT FOR THE DISCRIMINATING MODELER Safe, Rear Draw-Bar Clutch Available in seven satin anodized handle colors: Precision, Instrument-Quality Materials silver, blue, red, green, gold, copper, violet. Complete set in fitted hardwood case; includes Strong-Holding Advanced Collet Design uber Skiver, together with two vials containing Non-Rolling Hex Cross-Section four No. 11, and one each of Nos. 10, 12, 15, and 2 0 ........... $14.95 Deeply Knurled, Non-Slip Grip Individual handles (specify color) $5.95 Long-Life, Stainless, Vial of 6 blades (No. 10, 11, or 15) $2.10 Surgical Steel Blades (No. 12 or 20) $3.30 20 £ See your dealer, or order direct. Dealer inquiries are invited. MODEL BUILDER PRODUCTS All direct orders sent postpaid in U.S. California residents add 6% sales tax. 621 West Nineteenth St., Costa Mesa, California 92627 If you are considering the purchase of a Kraft rad system, you may be impressed with our obvious 110 c°ntro| and superior performance. However, you may notquality the many little features of our systems that make1 be aware feet drive servo mechanics in their utility, convenience, and accuracy. a b,9 differ( Crimped wire For example, we manufacture our own connectors which gold-plated beryllium copper pins and sockets for lonqC|ii corrosion and vibration resistance. Wires are crimp conn Our servos are molded of long wearing rugged nylon rather than rather than soldered to minimize wire lead breakage the cheaper short life materials used in competitive servos. For accuracy, our servos have their reference potentiometers ac tuated directly from the output drive rather than indirectly Built-in charge receptacle through a gear which, because of gear teeth backlash, adds to centering error. Clockwise and counterclockwise servo rotation Servos are supplied with four or more channel sets, two rotating clockwise and two counterclockwise. This feature greatly simplifies the radio control in stallation. Open gimbal control sticks A charge receptacle is Our control sticks are the wired into our switch harness so that you may charge your open gimbal type for model without the inconvenience of disassembly. Other systems better feel and ac require that the battery pack must be disconnected from the curacy. Their design receiver and be connected directly to the charger. eliminates any possiblity of centering error and is self com- Plug-in receiver antennas pensating for wear. These are but a few of the fine points which when added together make our radio control equipment the world's finest Write for our free catalog and get the complete story. A plug-in receiver antenna is standard antenna with all receivers. This means that you may mount t e gtan_ permanently in your model. Extra antennas are avai a tennas 450 W. California Ave. dard and special RF loaded short lengths. The short a P.O. Box 1268 are especially convenient for small aircraft, cars, an Vista, California 92083 (7 14) 724-7 146 LIGHT WEIGHT POWER SPEED BANTAM BY NOVAK ELECTRONICS MIDGET Finally, you can purchase a servo that is light enough to fly a 1/2A airplane, and strong enough to fly a big .60. NOVAK ELECTRONICS proudly announces the introduction of the BANTAM M IDGET SER V O . By working closely with Dick Rehling, of D&R Products, we have been able to produce a servo that has the power, strength, speed, and durability to perform in any type of air plane. These new servos use the highly advanced Signetics 544 IC, offering internally regulated power supply, dynamic braking, linear ramp timing, and an exclusive temperature-compensated dead-band circuit. Servo reliability is further enhanced by the use of the Clarostat conductive plastic potentiometer and external silicon drive transistors. NOVAK ELECTRONICS IS INTRODUCING SPECIFICATIONS FOR BANTAM MIDGET A NEW CONCEPT IN AIRBORNES. TORQUE: ................................. 21 oz. in. Choose one of our colors to mix or match TRANSIT TIME: .. 0.3 seconds/WO degrees with your existing equipment. Tell us your SIZE (inches):........ 1.125H x 0.6W x 1.43L radio manufacturer, and we will supply servos, WEIGHT: .......... 24 grams, or .846 ounces battery packs, and switch harnesses with the OUTPUTS: Rotary wheel, arm, adjustable proper plugs and specifications to match your arm. Compatible with A L L 3-wire digital radio system. systems, except Pro Line. BANTAM M IDGET, Assembled .........................$29.95 Battery, 100 MAH, Square (35 gms, 1.2 oz.) . $15.95 Battery, 250 MAH, Square (60 gms, 2.1 oz.) .. 15.95 Battery, 450 MAH. Square, (100 gms, 3.5 oz.) . 15.95 Battery, 450 MAH, Flat, (100 gms, 3.5 oz.) . 15.95 Miniature Switch H a rn e ss..................................... $7.95 Switch Mount, Bulkhead ty p e ............................... 1.00 Tray, Bantam Midget, Vertical............................... 1.00 Tray, Bantam Midget, Side M o u n t ...................... 1.00 WHEN ORDERING. PLEASE SPECIFY YOUR BRAND OF R/C SYSTEM AND COLOR PREFERRED (W HITE, 8LACK, RED, BLUE, YELLOW, ORANGE. IVORY). NOW! Also available in K R A F T G O LD . COD, Shipping, Handling, and Insurance .... $2.50 Actual Size Cash, Money Order, Bank Draft, Certified Check, Shipping, Handling, and In su ran ce............... 1.00 Three weeks delay on personal checks. DEA LER INQUIRIES PROMPTL Y ANSWERED Foreign orders add 15% California Residents, add 6% Sales Tax NOVAK ELECTRONICS, 1915A, South Evergreen St., Santa Ana, CA 92707 Ph. (714) 549-3741 2 MODEL BUILDER •m—— BIC SAVINGS AT ORANGE COAST HOBBIES LEISURE ELECTRONICS LION FUEL I Reg. $99.95 GALLONS PRICE SALE #1-10% NITRO S 9.90 $79.98 #2-20% NITRO $10.80 #3-30% NITRO $11.70 #4-40% NITRO $12.60 RESISTOR CAR WITHOUT RADIO - 6 CELL Choose from Alfa, Vette or Porsche Body Style Formulated expressly for R/C car use. Consist- ant formulation and cool running are the reasons the car racing champions use this fuel! NEW ASSOCIATED ASSOCIATED WANTTO BE A FAMOUS RACEDRIVER?...JOIN ELECTRIC “ ELECTRIC” THE ORANGE COAST HOBBIES RACING TEAM. 1/12 SCALE ELECTRIC R/C RACE CAR ASSOCIATED RCI Complete Car BY ASSOCIATED List $135. OCH Reg. Low Price $119 95 SPECIAL LIMITED OFFER RC100 $99.98 RC200 . $149.95 THORPE THORPE D ^FEffEM TtAi AjJQVAT - TRANS* 5 ON 6 CELL- THORPE $195.00 .mih 1M2th CHOCt or ANV Bour Ready to Run Scale TITAN CHASSIS..