Surpass Series

O.S. developed the Surpass Series of 4-stroke engines for discerning fliers who demand more power. Able to swing larger props and supply more usable horsepower, Surpass 4-strokes provide the best performance for your plane, regardless of scale or flying style.

All Surpass engines feature a helix gear-driven camshaft on the front end and dependable updraft carburetor in the back.
All include glow plug and standard silencer.

Engine	Displacement (cu in)	Bore (in)	Stroke (in)	RPM	Output (HP@rpm)	Weight (oz)	Recommended Props	Parts Listing
FS-30S (OSMG0830)	0.299	0.767	0.648	2,500-13,000	0.50 @ 10,000	9.8	9x6, 9x7, 10x4, 10x6	33000
FS-40S (OSMG0845)	0.396	0.835	0.724	2,200-12,000	0.65 @ 12,000	12.5	10x7.5, 11x6, 12x5, 12x6 (2-blade), 9x7 (3-blade)	35220
FS-91S II (OSMG0890)	0.912	1.091	0.976	2000-12,000	1.60 @ 11,000	22.9	Stunt: 11x10, 11x11, 12x9.5, 12x10, 12x11 Scale: 13.5x8, 14x7, 15x6, 16x6 3-Blade: 12x8, 12.5x7	35910
FS-120S-E (OSMG0930)	1.218	1.197	1.085	2,000-11,000	1.90 @ 11,000	30.5	13x11, 13x12, 14x10, 14x11, 15x8, 16x6, 16x7, 17x6	35530
FS-120S III (OSMG0935)	1.200	1.197	1.083	2,000-12,000	2.10 @ 12,000	32.5	14x9, 14x10, 14x11, 15x8, 15x9, 15x10, 16x6	35540
FS-200S (OSMG0980)	1.980	1.500	1.13	1,800-10,000	2.90 @ 9000	30.1	Sport & Stunt: 16x12, 16x13, 17x12, 18x10 Scale: 20x8	35530