West Wales Models
Engines
OS70 FS Surpass Four Stroke Engine
The FS-70 Surpass II comes equipped with a newly designed carburettor with a new carb needle that provides smooth response throughout the power range especially from idle to running speed and the carb is positioned on the centreline for increased mounting flexibility.
The throttle arm is mounted directly in line with the rotor to ensure that throttle inputs match carb response. To minimise the need to modify the cowl, the high - and low-speed adjustment screws are located on the same side.
Features
- Exhaust is routed back into the engine so there's less residue on the fuselage and inside of the cowl.
- A larger muffler offers better noise reduction.
- Includes standard Surpass performance features such as a rear bearing that's permanently lubricated and rubber-sealed, and a piston ring, crankshaft and camshaft that are plated to resist corrosion.
Specifications
- Stock Number: OSMG0872
- Displacement: 0.702 cu in (11.5 cc)
- Bore: 1.02 in (26 mm)
- Stroke: 0.87 in (22 mm)
- Practical rpm: 2,000-12,000
- Output: 1.1 hp @ 11,000 rpm
- Weight: 20.3 oz (580 g)
