OS 15650 .55HZ-R DRS Ring 40L-R

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.

Specifications:

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)