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55HZ-H Hyper Ringed .55 Helicopter Engine
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Bore: 0.91 in (23 mm)
Carb Type: O.S. 40L 3-needle rotary
Crankshaft Threads: UNF1/4-28
Crankshaft Type: Threaded
Cylinders: Single
Displacement: 0.55 cu in (8.93 cc)
HP: 2.1PS, 2.07 HP @ 17,000rpm
Height: 3.6 in (90.9 mm)
Length: 3.0" (76.6mm) from backplate to front bearing
Plug Type: O.S. #8,P3 Turbo Glow Plug
RPM Range: 2,000 - 17,000 rpm
Recommended Fuel: 10-30% nitro content, at least 18% lubricant content (heli blend)
Stroke: 0.85 in (23.5 mm)
Total Weight: 14.40 oz (408 g)
Type: 2-stroke glow powered .55 helicopter engine
Width: 2.0 in (52 mm) at mounting tabs

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