The power of a .60 in a .55!
The O. S. 55HZ-H Hyper Ringed Heli engine is cause to rejoice for 3D heli flyers!
The 55-HZ-H Hyper Ringed engine cranks out optimum power with a minimum of space!
The PowerBoost Pipe 50/55 is a first from O.S. ?V designed especially for helis,
improving efficiency and power while featuring a compact size. It also fits
the 50SX-H Hyper Ringed heli engine.
Features the same mounting pattern and silencer size as the 50SX-H Hyper engine
Dual needle 40L carburetor with four-arm throttle lever is designed to optimize
the power, performance and reliability of the 55HZ
Produces a range of 2,000 – 20,000 rpm
SPECIFICATIONS
- Stock Number: OSMG1955
- Displacement: 0.55 cu in (8.93 cc)
- Bore: 0.91 in (23 mm)
- Stroke: 0.85 in (21.5 mm)
- Practical rpm: 2,000-20,000
- Power Output: 2.1 hp @ 17,000 rpm
- Weight: 15.40 oz (408 g)





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