Engine O.S. – 61FX

The state-of-the-art in sport/competition engines!

All FX engines come with remote needle valve – the feature most asked for!

A longer crankshaft provides more secure attachment for spinner, prop and nut

Dual ball bearing construction adds durability and longevity

Semi-square head shape creates more fin area to increase cooling capacity

Each engine comes with a high-performance carburetor and muffler with adjustable
exhaust direction and built-in pressure tap

61FX and 91FX feature a remote needle valve that can be positioned two ways,
to help you avoid cowl modification and preserve your plane’s scale lines; 160
FX remote needle can be mounted three ways

SPECIFICATIONS

• Stock Numbers: OSMG0561
• Displacement: 0.607 cu in
• Bore: 0.945 in
• Stroke: 0.866 in
• Practical rpm: 2,000-17,000
• Output: 1.90 hp @ 16,000 rpm
• Weight: 19.4 oz
• Recommended Props:
• Tuned Pipe: 12×9, 12×10, 12×11
• Sport: 12×6, 12×7, 12×8, 13×6, 13×7