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One Assembled FS-91 II Surpass Engine w/Carb
One #F Glow Plug
One Exhaust Muffler w/ manifold
One Set of Instructions, Poster, and Decals
Fuel: 5%-15% nitromethane with 18% lubricant. Synthetic, castor, or a synthetic/castor blend may be used. NOTE: Certain four-cycle fuels cannot be used due to low oil content . However, SOME four-cycle fuels such as the Wildcat 4-Cycle 15% (CATP9109) may be used because it has 18% oil content. When choosing fuels for this engine, the modeler must be sure to select a fuel with at least a 18% lubricant content. Starting and Field Equipment.
A fuel tank of approximately 300cc capacity is suggested. This allows up to 12-13 minutes flying time. Some differences between 2-Stroke and 4-Stroke engines:
4-Strokes are quieter.
4-Strokes get better Fuel Economy
2-Strokes generate More RPM (11,000-13,000 RPM vs. 4-Strokes rev to around 9,500 RPM)
4-Strokes generate much more torque and will swing a larger prop.
4-Strokes have a more realistic sound, like a real aircraft engine.
Although it is cost prohibitive, you can convert this to the pump version OSMG0890 using the following items:
- OSMG2533 45983000 CARB #60N FS-91-P
- OSMG6491 45968000 INT PIPE ASSY FS91-P
- OSMG2230 72508001 PUMP UNIT PD-07
- OSMG4153 45907010 COVER PLATE FS91-P