OS.37SZ-H Ringed Engine

Specification:
Weight: 293g 10.33 oz
Displacement: 6.07cc 0.37cu in.
Bore: 20.5mm 0.807in.
Stroke: 18.4mm 0.724in
Power Output: 1.4PS@18000 RPM
Practical RPM: 2000-21000