O.S. 55HZ-R DRS Ring

 Heli Engine ＃15650

This is the Limited Edition OS 55HZ-R DRS Ringed Helicopter Engine with the DRS (Demand Regulator System).

FEATURES:

• DRS system delivers fuel to the regulator under constant pressure for precise fuel delivery throughout the entire tank from full to empty
• Mounting position of DRS is perfectly in line with the carb for consistent operation in all attitudes of flight
• Same mounting bolt pattern as the OS 50SX-H Hyper
• Dual needle 40L-R carburetor allows independent adjustment of idling, hovering and high speed with four arm throttle lever for use with a variety of servo brands
• HZ Hyper low profile six fin cylinder head

INCLUDES: OS 55HZ-R DRS Ringed Helicopter Engine

SPECS:
Displacement: 0.55 cu in (8.93cc)
Bore: 0.91" (23mm)
Stroke: 0.85" (23.5mm)
Practical RPM: 2,000-20,000 RPM
Weight: 15.1oz (429g)