FX Series

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

Engine	Displacement (cu in)	Bore (in)	Stroke (in)	RPM	Output (HP@rpm)	Weight (oz)	Recommended Props	Parts Listing
25FX (OSMG0525)	0.249	0.710	0.630	2,500-19,000	0.84 @ 18,000	8.8	Pattern: 9x5, 9x6 Sport Flying: 9x5, 9x6, 9.5x5, 10x4, 10x5	12660
61FX (OSMG0561)	0.607	0.945	0.866	2,000-17,000	1.90 @ 16,000	19.4	Tuned Pipe: 12x9, 12x10, 12x11 Sport: 12x6, 12x7, 12x8, 13x6, 13x7	17750
91FX (OSMG0591)	0.912	1.090	0.976	2,000-16,000	2.8 @ 15,000	19.3	13x8, 13x9	19020
160FX (OSMG0660)	1.60 (26 cc)	1.32 (33.6 mm)	1.16 (29.6 mm)	1,800-10,000	3.7 @ 9,000	32.6 (925 g)	Aerobatic: 15x12-14, 16x10-14, 16.5x10-13 Sport: 17x10-13, 18x10-12	19260