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O.S. Engines

GF40 4-Stroke Gasoline Engine

4-stroke power, scale sound and gasoline economy

Ideal for aerobatic or scale aircraft, the 4-stroke GF40 offers added torque and a more realistic sound, plus gas economy and the fit and finish O.S. is famous for. It also includes an ignition module that eases starting and automatically adjusts timing to throttle settings. Other features include a Walbro® carburetor and an integrated choke rod guide that simplifies installation. The GF40 includes a muffler, spark plug and a 2-year limited warranty.

Displacement: 2.438 cu in (39.96 cc), Bore: 1.57 in (40 mm), Stroke: 1.251 in (31.8 mm), Practical RPM Range: 1,800-9,000, Weight: Engine: 42.3 oz (1200 g), Muffler: 4.0 oz (113 g), Ignition Module: 3.4 oz (95 g), Includes: silencer, Walbro carb, ignition module, Recommended Props: 18 x 6W, 18 x 10, 18 x 12, 20 x 8W

See Tower Hobbies Reviews at Hobbico, Hobby & Model Construction Supplies - Retail, Champaign, IL  
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