O.S. FS-70 Ultimate 4-Stroke Engine w/Pump, Brand New in Box
This is the O.S. Max FS-70 Ultimate 4-Stroke Engine with Pump.
Features:
- The FS-70 Ultimate is noticeably more compact than the FS-70 Surpass II
making for easy installation in a wider range of aircraft - Slide Valve #60U Carburetor for quick and accurate throttle response, also
equipped with regulator that stabilizes the pressurized fuel for reliable
performance during aerobatic maneuvers - Holes drilled in drive washer to reduce weight.
Includes:
One O.S. Max FS-70 Ultimate 4-Stroke Engine with Pump, type F glow plug, muffler,
decal sheet, instruction manual
Specs:
- Displacement: 0.698 cu in (11.45 cc)
- Bore: 1.091″ (27.7mm)
- Stroke: 0.748″ (19.0mm)
- Practical RPM Range: 2000-13000
- Output: 1.2ps @ 11000 RPM
- Weight-Without Muffler: 16.4oz (465g)
- Weight-With Muffler: 17.7oz (502g)
- Weight of Muffler: 1.8oz (51g)





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