Tower Hobbies — Having Fun Since 1971

FS-120 III Surpass Ringed 1.20 4-Stroke with Pump
Item No.
OSMG0935

FS-120 III Surpass Ringed 1.20 4-Stroke with Pump
Item No.
OSMG0935
$519.99
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Manuals & SupportBuilding the 4-Stroke of the future, one engine at a time!
Surpass™ engines share features that include a helical gear-driven camshaft up front and a reliable rear updraft carb. Generous intake valves and CNC-machined parts add superior fit, power and compression. Rugged ringed pistons and ball bearing-supported crankshafts contribute smooth, trouble-free operation. Most also include rubber-sealed ball bearings, a reversible carb for easy installations and corrosion-resistant plating on the crankshaft, camshaft and piston.

- High torque for spinning bigger props.
- Quieter, more realistic airplane sound.
- Generous with power — stingy with fuel.
Product Specifications
Specs
Crankshaft Threads | UNF5/16 - 24 |
Crankshaft Type | Threaded |
Cylinders | Single |
Carb Type | O.S. 70N 2-needle rotary with built-in regulator |
Bore | 1.20" (30.4mm) |
Displacement | 0.70 cu in (11.5cc) |
Engine (Only) Weight | 32.5 oz (921g) w/o muffler |
Power Type | Glow |
HP | 2.1PS, 2.07 HP @12,000 RPM |
Muffler Type | 2-piece aluminum |
Muffler Weight | 2.8 oz (79 g) |
Oil Type & Content | At least 16% synthetic lubricant |
Plug Type | F |
Product Height | 5.5" (139.5mm) crankcase botton to top of cylinder head |
Product Length | 5.3" (134mm) from carb to front of drive hub |
Product Width | 2.6" (67mm) at mounting tabs |
Prop Range | 14.9 - 16x6 |
Recommended Fuel | 5%-15% four cycle blend nitromethane |
RPM Range | 2,000 - 12,000 |
Stroke | 1.08" (27.5mm) |