O.S. Engine OSMG0979 FS-200S-P Surpass Performance Four-Stroke  [OSMG0979]

O.S. Engine FS-200S-P Surpass Four-Stroke Ringed Engine
Price:
£406.91
Brand:
O.S. Engine
Model:
OSMG0979
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Engineered upgrade: the FS-200S-P Surpass

The FS-200S-P Surpass takes proven four-stroke architecture and increases usable power without enlarging the engine footprint. It is aimed at hobbyists wanting a clear step up from earlier FS models with minimal installation hassle.

Usable power and realistic exhaust character

Developed to enhance midrange torque and throttle response, the FS-200S-P is at home in sport aircraft and scale builds that benefit from a richer exhaust sound. The F-6010 muffler's 360 degree rotation helps you position the outlet for best appearance and clearance.

Installation advantages and dependable fuel feed

The reversible carburetor and narrower camshaft housing make fitting the engine into tight cowls easier. The PD-08 diaphragm pump supplies steady fuel under different attitudes, and the larger intake contributes to an approximate 43 percent power gain over the FS-120S-P.

Specifications

  • Displacement: 1.98 cu in (32.4 cc)
  • Bore: 1.50 in (38.0 mm)
  • Stroke: 1.13 in (28.6 mm)
  • Practical RPM: 1,800 - 10,000
  • Output: 3.0 hp @ 9,000 rpm
  • Weight (w/o Muffler): 30.9 oz (876 g)
  • Weight (w/Muffler): 35 oz (993 g)
  • Includes: PD-08 diaphragm pump, 80R carburetor, F-6010 muffler & type "F" glow plug

For model builders who prioritise a direct-fit power upgrade with authentic four-stroke sound, the FS-200S-P provides a strong balance of performance and practicality.

What routine checks should I perform before flight?

Check engine mount security, propeller condition, fuel lines and muffler clamps. Verify the PD-08 pump and carburetor connections are tight and free of leaks before each flying session.

How does the larger carb intake affect tuning?

The increased intake size improves airflow and power, which may require slight needle adjustments compared to smaller engines. Fine tuning on the ground and a controlled in-flight check are recommended.

Is the FS-200S-P heavy compared with similar engines?

Weights are comparable to other high-displacement four-strokes in its class. The engine weighs 30.9 oz without the muffler and 35 oz with the muffler fitted, so consider balance and CG when replacing a lighter unit.

What comes in the box with the engine?

The package includes a PD-08 diaphragm pump, an 80R carburetor, the F-6010 muffler and a type "F" glow plug so you have the core items needed to fit and run the engine.

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