O.S. FT-160 Gemini Twin-Cylinder Ringed 4-Stroke Engine

Tower Stock# LXBY68  •  Manufacturer Stock# 36108
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Notes from our tech department:
This is a FT-160 Twin-Cylinder 4-Stroke Engine from O.S. Max.
This Engine is a Flat (Opposed) Twin-Cylinder Engine, called the "Gemini-160".
It is Scale-Like in Appearance when Installed in a Piper Cub or Citabria.


3-Crankshaft ball bearings
2-Camshaft ball bearings
Twin opposed cylinders
Ringed piston
Geared camshaft (geared timing)
New Two needle carb (OSMG2538)
Two-year warranty


One Assembled FT-160 Twin Engine
One Motor Mount (OSMG2804) with mounting hardware
One Instruction Manual w/Decals and Poster
One Dual Glow Plug Extension Cable
One Locking Prop Nut Assembly
Two #F Glow Plugs (installed)
One gauge tools set
One choke valve extension (rod)


Construction: Aluminum and Aluminum alloys
Displacement: 13.26cc (x2) or .809 cu in (x2)
Bore: 27.7mm (1.09")
Stroke: 22.0mm (.866")
Power Output: 2.0 BHP at 10,000 RPM
Weight: 1100g (38.8oz)
Practical RPM Range: 2,000 - 10,000 RPM
Length: 120mm (4.72") from backplate to front of the drive washer
Width: 196mm (7.72")
Height: 80mm (3.15")
Crankshaft Thread Size: 5/16-24
Suggested Props: 15x8, 16x6, 18x6, 18x7, 18x8, 20x6

Width (outer cylinder jacket to outer cylinder jacket): 120mm (4.72")

Needle Settings: High Speed: 3.5 turns out from fully closed
Mixture Control (low speed): Flush with carb body,then 2 turns


Glow fuel with at least 16% lubricant content


No longer includes needle valve extension, knob and hook,
M3x32 propeller slippage screws, motor mount template, or spare
Woodruff key.
updt lmm 4/6/09



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