O.S. Engine 81FS-a 4-Stroke Pumped Engine  [OSMG0982]

Scale modelers have actually enthusiastically embraced FS-a machines since they virtually expel oil mess while delivering exceptional energy. Now you can get the 81FS-a equipped with a gas pump for even more constant performance.

Mounts easily in the same area as an FS-70II with no improvements
Fuel is delivered regularly to your engine constantly, no matter what the plane's attitude, to get more dependable performance.
Well suited for aerobatics along with other situations that need high power.
Feature the ingenious recirculation system that re-lubricates parts instead of venting the oil out to the cowl.

SPECS

• Inventory Quantity: OSMG0982
• Displacement: 0.809 ci (13.26 cc)
• Bore: 1.091 in (27.7 mm)
• Stroke: 0.866 in (22.0 mm)
• Practical RPM: 2,200-10,000 rpm
• Energy Output: 1.28 hp @ 10,000 rpm
• Motor body weight: 20.11 oz (570 g)
• Muffler Weight: 1.9 oz (54g)
• Includes: 61R carburetor, F-5030 muffler, PD-08 pump