OS FS-56 Alpha 4-cycle Engine

OS FS-56α ushers in a new era in O.S. 4-stroke technology, promises to boost your plane's performance. OS FS-56α has the same mounting as the FS-52S and sports a new OS 40NA carburettor. 

Specifications:

• Displacement: 0.569 cu in (9.32 cc)
• Bore: 0.945 in (24.0 mm)
• Stroke: 0.811 in (20.6 mm)
• Practical rpm range: 2,400-13,000
• Output: 0.99 hp @ 10,000 rpm
• Weight w/muffler: 16.26 oz (461 g)
• Includes: 40NA carburetor, muffler
• Recommended props: Sport & aerobatic; 13x6, 12x6-8; Scale: 13x6-7, 12x6-8

This new 40NA carburettor is equipped with a venturi that reduces the chance of fuel leaking out onto the cowl, while creating more positive air/fuel flow.

OS FS-56α has a newly designed lubrication system, eliminating the need for crankcase ventilation.

The package includes OS FS-56α, 40NA carburettor and muffler.