This is the 105HZ DRS 1.05 cu in Helicopter Engine from O.S. Engines.
FEATURES
Same mounting dimensions as a .90 cu in engine
Machined blue anodized aluminum heatsink cylinder head
Velocity stack increases airflow and enhances engine performance
Pressurized DRS (Demand Regulator System) ensures consistent fuel flow regardless of the helicopter attitude
Backplate accepts the Futaba BPS-1 RPM sensor for the GY701 and CGY750 gyros
Ideal bore and stroke ratio for lowest vibration
INCLUDES: 105HZ DRS 1.05 cu in Helicopter Engine with Glow Plug and Manual
REQUIRES: Fuel - Heli blend with 15% nitro content
SPECS:
Displacement: 1.048 cu in (17.17 cc)
Bore: 1.142" (29mm)
Stroke: 1.024" (26mm)
RPM Range: 2,000 - 16.500
Output: 3.7 ps @ 15,000 RPM
Weight: 21.46oz (608g)