The O.S. GF 40 combines the ease of use and economy of the traditional 4 stroke engine with a petrol engine. The fast and powerful response is ideal for scale sport and aerobatic models. The mounting points are identical to the GT 33 2 stroke engine. The carburetor was developed by O.S. in cooperation with Walbro especially for this engine.
Technical data
-
- Cooling: Air
- Width [mm]: 83.7mm
- Shaft thread: UNF-5/16-24
- Spacer holes lengthwise [mm]: high 54mm
- Carburetor: WT GF 40
- Total weight [g]: 1378g
- Height approx. [mm]: 157.2mm
- Def. hole Ø [mm]: 5.2mm
- Speed range approx.: 1800 - 9000 rpm
- Bore [mm]: 40mm
- Spacing of transverse mounting holes [mm]: 70mm
- Displacement [ccm]: 39.96 cm³
- Power kW (hp) at: 3.75 at 9,000 rpm
- Recommended propeller: 18x8 - 20x10
- Length to hub: 118.5mm
- Stroke [mm]: 31.8mm
- Shaft Ø [mm]: 7.8mm
- Brand name: O.S.
- Range of application: Model aircraft
- incl. silencer: Yes
- Fuel: Petrol
- Type: 4-stroke petrol
- Article number Manufacturer: OS39400
- The O.S. GF40 engine is operated with "normal" petrol mixture 1:25.
Box contents
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- Engine
- Instruction
- Ignition
- Spark plug
- Silencer
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Stock 3-4 days
