Sitewide 2X Points! Join the club for FREE to take advantage. Ends 1/29.
See Details
Backorder

55HZ-R DRS Ringed .55 Helicopter Engine
Item No.
OSMG1957
Backorder

55HZ-R DRS Ringed .55 Helicopter Engine
Item No.
OSMG1957
$399.99
Price reduced from
$599.99
to
Free financing available through Easy Pay
Learn More
Product Details
Quick Links
Manuals & SupportState-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.

- 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
Specs
Bore | 0.91 in (23 mm) |
Carb Type | O.S. 40L-R dual needle rotary |
Crankshaft Threads | UNF1/4-28 |
Crankshaft Type | Threaded |
Cylinders | Single |
Displacement | 0.55 cu in (8.93 cc) |
Power Type | Glow |
HP | 2.1PS, 2.07 HP @ 17,000rpm |
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 |
Recommended Fuel | 10-30% nitro content, at least 18% lubricant content (heli blend) |
RPM Range | 2,000 - 20,000 rpm |
Stroke | 0.85 in (23.5 mm) |
Total Weight | 15.13 oz (429 g) |