O.S. Engine #34710 - OS FS-70 Ultimate w/pump/60U/F-4020 Silencer  [OS-34710]

this is actually the O.S. Max FS-70 Ultimate 4-Stroke engine with Pump.

Features:

• The FS-70 Ultimate is considerably scaled-down versus FS-70 Surpass II making for simple installation in a wider range of aircraft
• Fall Valve #60U Carburetor for fast and valid throttle response, furthermore loaded with regulator that stabilizes the pressurized gas for trustworthy performance during aerobatic maneuvers
• Holes drilled in drive washer to reduce fat.

Includes:

One O.S. Max FS-70 Ultimate 4-Stroke motor with Pump, type F radiance plug, muffler, decal sheet, guide

Specs:

• Displacement: 0.698 cu in (11.45 cc)
• Bore: 1.091" (27.7mm)
• Stroke: 0.748" (19.0mm)
• Practical RPM quantity: 2000-13000
• Production: 1.2ps @ 11000 RPM
• Weight-Without Muffler: 16.4oz (465g)
• Weight-With Muffler: 17.7oz (502g)
• fat of Muffler: 1.8oz (51g)