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55HZ-R DRS Ringed .55 Helicopter Engine

Item No. OSMG1957
Brand Logo
5 out of 5 Customer Rating

55HZ-R DRS Ringed .55 Helicopter Engine

Item No. OSMG1957
$474.99
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Product Details

State-of-the-art power for serious heli pilots!

The 55HZ-R DRS Ringed delivers state-of-the-art power for serious heli pilots! It includes the Demand Regulator System for outstanding run consistency and a built-in mount for Futaba GY701 and CGY750 rpm sensors. Two needles on the included 40-LR carb let pilots precisely adjust middle and high speeds.


O.S. Two Year Limited Warranty
  • Includes: #8 plug, 40-LR carb & check valve.
  • 2-year limited Hobby Services warranty.
  • The Demand Regulator System (DRS) uses pressure to consistently deliver the optimal air-fuel mixture to the engine — regardless of the heli's attitude.
  • Two needles on the carburetor precisely adjust middle and high speeds.
  • A hole in the cover plate allows for mounting an rpm sensor for the Futaba® GY-701 governor or CGY750 gyro, ensuring precise rpm control.

Product Specifications

Manufacturer # 15650
Bore 0.91 in (23 mm)
Crankshaft Threads UNF1/4-28
Crankshaft Type Threaded
Cylinders Single
Displacement 0.55 cu in (8.93 cc)
Power Type Glow
Product Height 3.6 in (90.9 mm)
Product Length 3.0" (76.6mm) from backplate to front bearing
Product Width 2.0 in (52 mm) at mounting tabs
RPM Range 2,000 - 20,000 rpm
Stroke 0.85 in (23.5 mm)
Total Weight 15.13 oz (429 g)