OS Engine GF-40R w/F-6040 silencer (L-OS3AF00)

OS Engine GF-40R w/F-6040 silencer (L-OS3AF00)

A compact, 4-stroke gasoline powerhouse.

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.

• O.S. Two Year Limited Warranty
• Easily installs in the same mounting pattern as the GT33
• Positive Crankcase Ventilation (PCV) system helps keep your model and the environment cleaner without blow-by gas and oil waste
• Choke rod guide is integrated with the backplate for convenience
• Includes a special Walbro carb and a compact, lightweight ignition module
• Notes from our tech department:
• This is the O.S. Engines GF40 4-Stroke Gasoline Engine.

FEATURES

• Ideal for aerobatic or scale aircraft
• Same firewall mounting system as the O.S. GT33
• Walbro carburetor witn integrated choke rod guide that simplifies installation, choke rod guide is integrated with backplate
• Positive Crankcase Ventilation (PCV) helps keep model and environmen cleaner without blow-by gas and oil waste
• Two year limited warranty through Hobby Services beginning at date of purchase

INCLUDES

• GF40 4-Stroke Gasoline Engine, CM6 Spark Plug, Muffler, Ignition
• Module and Instructions

REQUIREMENTS

• 2-cycle oil, see SPECS
• Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack
• LiPo battery requires voltage regulator
• Propeller: 18x8 for break-in, 18x8-12, 19x8-10 20x8-10
• Mounting standoffs, length depends on aircraft
• Gasoline safe fuel tubing and fuel filter

SPECIFICATIONS

• Displacement: 2.438 cu in (39.96 cc)
• Bore: 1.57" (40mm)
• Stroke: 1.251" (31.8mm)
• Practical RPM Range: 1,800-9,000
• Weight: Engine, 42.3oz (1200g)
• Muffler, 4.0oz (113g)
• Ignition Module, 3.4oz (95g)
• Gasoline/Oil Mixture: 30:1 - 50:1
• 25:1 fuel/oil mixture if brand of oil states 50:1 mix
• Crankshaft Size: UNF5/16-24
• Length from Backplate to Drive Hub: 4.7" (118.5mm)
• Length from Center of Crankcase to Drive Hub: 3.1" (78.6mm)
• Length from drive hub to end of Crankshaft: 1.6" (41mm)
• Length from Carburetor to end of Crankshaft: 7.8" (197.6mm)
• Height from Center of Crankshaft to Rocker Cover: 4.9" (126.7mm)
• Height bottom of Crankcase/top of Rocker Cover: 6.2" (157.2mm)
• Distance between Vertical Mounting Hole Centers: 2.1" (54mm)
• Distance between Horizontal Mounting Hole Centers: 2.7" (70mm)
• Width of Cover Plate: 3.3" (83.7mm)