This is one of the O.S. FX series
of high-performance engines.
of engines are used in sport
and aerobatic aircraft. The
FXs are designed to use a muffler
or tuned pipe.
All FX engines are covered under
the O.S. Max Two Year Warranty.
Twin ball bearing-supported
Schnuerle porting (AKA Schnuerle
Advanced Bi-Metallic Liner.
This process uses a double layer
of plating material, rather
than one thicker layer. This
helps the metal to bond to the
cylinder, and is more durable.
Also, the plating process is
more consistent, resulting in
a more precise fit between piston
and sleeve, for better compression,
longer life. Side exhaust with
muffler with rotatable exhaust
outlet New carburetor with remote
needle mounted on the backplate
of the engine (to keep fingers
away from the spinning propeller).
One Expansion style muffler
(#E-4010) with screws.
One Assembled engine with carb.
One package illustrated instructions,
parts list, and O.S. decal
One O.S. #8 glow plug (OSMG2691)
Displacement: 9.95cc (0.607
cu in) RPM range: 2,000 - 17,000
Bore: 24.0mm (.866") Stroke:
Horsepower: 1.90 BHP at 16,000
Weight: 19.4 oz, 23.6 oz w/mufflr
Length: 84mm (3.31") the
distance from the backplate
to drive washer
Width: 43.0mm (1.69") width
of engine neglecting engine
52.0mm (2.05") distance
between centers of the mounting
Exhaust port: 29.5mm x 9.0mm
Crankshaft Thread Size: 5/16-24
43.8mm btwn exh mounting holes
Props: Tuned Pipe: 12x9, 12x10,
Sport: 12x6, 12x7, 12x8, 13x6,
Fuel with 20% (minimum) lubricant
content and 5%-15% Nitromethane
(All the 5%-15% fuels we carry
meet these requirements)
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