OS FP 15 small OS engine for an old trainer airplane

Bought it used and put it for a test run. Great engine. Starts from hand.
The fuel contains castor oil and I run the engine rich. 5% nitro.
2 Stroke Methanol/Nitro
- Displacement: 2.49 cm³
- Weight: 142 g
- Bore: 15.2 mm
- Stroke: 13.7 mm
- Power: 0.41 PS
- RPM: 17'000 U/min

Видео OS FP 15 small OS engine for an old trainer airplane канала Motor Squirrel