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Why GOLD-N-PUSH RODS are like a World Championship Baseball Team Watch a world championship baseball team in inner rod for no-bind, smoother operation, you action and you are seeing nine superior perform­ feel like a World Series winner, yourself. Since the ers, each doing what he does best. You're watch­ special material used in Gold-N-Push Rods is tem­ ing a team that has proved itself to be second to perature compensated to minimize shrinkage and none. expansion, you're ready for the heat of the All Star Same's true with Sullivan's Gold-N-Push Rods. Game or the chill of the Fall Classic. Nine superior performers, each best suited to do Check out this world championship line-up...and its own particular job. And when you use a Gold-N- what each one is designed to do best: Push Rod, with its patented splines on its yellow The G R F Brothers Mr. Precise — GRC-3 A favorite of scale modelers, this 36" long cable type (.030” cable) Gold-N-Push Rod — the "C" stands for "cable” — can turn on a 1W radius. That makes it ideal for throttle control, steerable nose gear (retracts), controls for smaller aircraft, and double cable scale installation. These two brothers — GRF 36 and Mr. Precise wears a yellow outer sheathing and GRF 48 — are identical twins, except includes one sheathing, one cable and one copper "48" is longer...48" instead of 36". coupler. The "F” in their name means “flexi­ ble” since each can turn a mighty tight corner. If you were to draw an imaginary circle using this corner, you'd find they turn on a 2'A·" The GRC Outfielders radius. Great for ailerons, steerable nose gear, These three Gold-N-Push Rods, like their GRC-3 routing through fuselages, etc. relative, are all the cable type and wear a yellow These brothers always wear a red outer sheathing outer sheathing. But they’re heavier because they're and come complete with two sets of inners and for heavier installations. Two of them, GRC-6 and outers, one 4" and two 1W all thread 2/56 rods, and GRC-8, have an .058" cable and can turn on a 2" one rubber nut. Clevis not included. radius. The third, GRC-S, has a 1/16" diameter galvanized steel cable and turns on a 2Ά" radius. GRC-8 would be the centerfielder since it’s the Their Cousins - The G R S F Boys tallest — 48" long; the others are 36" long. Ideal for larger aircraft — as big as you can fly — they’re also used for ailerons in gliders, elevators, rudders, etc. If the nose gear wiggles with the GRC- 6 or GRC-8, then move up to the more rigid GRC-S. Each comes complete with one outer sheathing, one inner cable, and two brass couplers. You’ll notice the family resemblance but these two brothers always wear blue. Again, GRSF 36 is The “Iron Man” - SR 36" long while GRSF 48 is 48" long. The “SF" stands for "semi-flexible" since they turn on a 3W Tough guy of the team, “SR" means “steel rods.” radius. They’re fine for the same applications as Underneath the red sheathing is a rigid 2/56 steel their red cousins so long as the turns are less severe. rod, threaded both ends. Use SR instead of arrow They’re much better, though, for the straight appli­ shafts or balsa wood for aileron hook-ups, eleva­ cations. Contents of each package identical to GRF tors, rudder, etc. Each SR package includes two sets brothers. of sheathings and rods plus a rubber nut. That’s the Gold-N-Push Rod line-up. Ninegreat suited for the particular job to be done. After all, performers — just like a world championship who would ask Steve Carlton to play Pete Rose's baseball team. But a word of caution: always position? select the one specific Gold-N-Push Rod best WARNING Do Not Fly Near Overhead Power Lines PRODUCTS, INC 535 DAVISVILLE ROAD · WILLOW GROVE. PA. 19090 · (215) 659-3900 K & B 3.5cc (.21) R/C ENGINE Designed specifically as a marine engine. Powerful, rugged and dependable. Will provide countless hours of high-performance operation. Easy to start, no break-in required. Precision machined U-Joint Nuts fit most existing ball drives. · Features include: · Efficient Muffler — under 90 decibels • ABC Cylinder and Piston · Ball Bearings · Water-Cooled Head · Rear Exhaust - Butterfly Throttle · Rotatable Case (center block)—permits changing exhaust from forward to aft po­ sition. ' K & B 3.5cc (.21) OUTBOARD ENGINE The first of its kind. Destined to set a trend others will follow! Equipped with ABC piston and liner, this water cooled competition engine is the ultimate in outboard engines. Other features include: A new K & B car­ buretor & Pressure Tap · Ball Bearings · Flywheel designed for cup electric starter • Built-in water pick-up · Integral cavita­ tion plate and skeg · Tough transom mounting plate to withstand stress of flat-out racing at top speeds. K & B 7.5cc (.45) R/C INBOARD MARINE RACING ENGINE, the engine that replaced the popular K & B 6.5cc. Since its introduction it has broken most of the old records held by the 6.5cc. Features include: ABC Piston & Liner · Con Rod ma­ chined from 7075-T6 aluminum solid bar stock, bushed both ends · New machined steel rotor disc · Rotatable Case (Center Block) permits changing of exhaust from forward to aft position · Beefed-up Crankshaft · K & B’s Quintuple Porting. HARDWARE DOUBLE RUDDER OUTDRIVE ASSEMBLY For .40 or .60 RUDDER ASSEMBLY boats. Aluminum die cast. Complete with Master Bracket (designed with Aluminum die cast. twin ribs for individual modification), Available for both .40 2 Rudder Pivot Brackets, 2 Retainer and .60 boats. Easy to Plates and all necessary Mounting assemble. Comes com­ MOTOR MOUNT SET Die cast alu­ plete with Mounting Screws and Washers. Also includes Plate and Screws, minum, complete with 5" Master Adjustable Strut-with installed Olite Mount, Screws and Washers, and Bushings, Pivot Pins — with Nylon Bushings, 3 Control Arms — Pivot Bracket, Rudder Blade, Pivot Pin - Insert Adapter for ,40 or .60 en­ with set screws and 2 Rudder Blades (2 ARB for .40, 3 ARB for with Nylon Bushings, and Water Pick-up gine. Inserts can be rail mounted — threaded and adjustable. The .40 and .60). The SINGLE RUDDER OUTDRIVE ASSEMBLY is the same as the in boats with confined engine above, except it only includes 1 Rudder Blade, Rudder Pivot Bracket, .60 Rudder are identical, except the .60 placement areas. Pivot Pin and Control Arm. Rudder Blade is Vi" longer. k A Á A A A A A ΑΑΑΑΑΑΑΑ A A A A A A A A A A A AAA A A Send lor your K&8 Catalog. "Matched rimsb System" Handbook and K&B MANUFACTURING Super Proxy Paint Chart Include 50c to cover postage and handling 12152 WOODRUFF AVE., DOWNEY, CA. 90241 L Address to Dept SR J MAY 1981 1 MODEL MAY 1981 BUILDER volume 11, number 112 Box 335, 621 West Nineteenth St., Costa Mesa, California 92627 Phone: (714) 645-8830 STAFF CONTENTS PUBLISHER Walter L. Schroder FEATURES EDITOR W m . C. Northrop, |r. WORKBENCH, Bill Northrop ............................................ 6 GENERAL MANAGER OVER THE COUNTER, lohn Elliot............................. 7 Walter L. Schroder HOW TO FLY PATTERN, Dick Hanson..................... 10 ASSISTANT EDITOR R/C WORLD, Bill Northrop .............................................. 12 )ohn Elliot THE MODEL SHIPYARD, HughCarlock ................. 20 ASSISTANT GENERAL MANAGER Anita Northrop MARKINGS FOR MODELS, George A. Wilson, Jr. 22 ART DEPARTMENT THORNBURG AT LARGE, Dave Thornburg ........ 24 Al Patterson R/C PYLON, Jim G a g er......................................................... 28 PLUG SPARKS, John Pond ................................................ 29 OFFICE STAFF R/C SAILING, Dr. Larry Fogel............................................ 36 Mary Ann Bell Edie Downs R/C AUTO NEWS, Dan Rutherford ............................. 38 Debbee Holobaugh FUEL LINES, Joe K la u s e ......................................................... 40 A. Valcarsel ELECTRIC POWER, Mitch Poling ................................. 42 CONTRIBUTING EDITORS SPORT SCENE, Larry Renger ............................................ 44 Dave Brown Mitch Poling Jerry Dunlap John Pond R/C POWER BOATS, Jerry Dunlap ............................. 46 Larry Fogel Fernando Ramos HANNAN'S HANGAR, Bill Hannan ........................... 50 Jim Gager Larry Renger Bill Hannan Dan Rutherford FREE FLIGHT, Tom H utchinson ........................................ 54 Dick Hanson Dave Thornburg CONTROL LINE, Dan Rutherford ................................. 58 Tom Hutchinson John Tucker Joe Klause Bob Underwood FREE FLIGHT SCALE, Fernando Ramos....................... 60 Walt Mooney ASTRO FLIGHT ELECTRIC MEET, Bilistroman 64 ADVERTISING MANAGER Walter L. Schroder SCALE VIEWS R/C M O D FI BU H D fR (ISSN 0194 7079) is 1918 HEATH MODEL 2B, W alt M o o n e y ............. .25 published monthly by RCMB INC . Box 335. 621 West Nineteenth Street. Costa Mesa. C alifornia 92627. Phone (714) 645-8830. CONSTRUCTION Subscriptions $25 00 per year, $47.00 for tw o BLANÍK L-13& L-13J, L.H ouha .................................. 16 years. Single copies $2.50. A dd $3.50 per year lor postage outside the LLS. (except “ MY SPARKY” O.T., Ed L id g a rd .................................. 33 APO and FPO) Walt M ooney ................... THE BOSTON FOUND, 51 Copyright 1981 by RCMB INC. All rights C02 BANSHEE, Ed Toner ................................................ .61 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: Carrie Hanson, age 14, shows off her dad's latest pattern design. It's Dick "How to Fly Pattern" Hanson's "Formula 750". a taildragger with retracts, powered by a piped postage.

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