O.S.SPEED
HELICOPTER ENGINES:O.S.SPEED 91HZ-R 3C

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Displacement 14.95cc (0.912cu.in.) Code No.18641

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>> Owner's Instruction Manual (PDF)
Output 3.6ps/3.55hp/15,500rpm
Bore 27.7mm (1.091in.)
Stroke 24.8mm (0.976in.)
Practical r.p.m.Range 2,000~16,500r.p.m.
Weight 603.0g (21.27oz)