Demanding 3D helicopter flying, with constant, vigorous attitude and throttle changes, requires an engine with a steady, dependable fuel supply. O.S. answers the call with the 55HZ-R Heli Engine, featuring the Demand Regulator System (DRS) for instantaneous response and outstanding...
O.S. Engine® 55HZ-R Heli Engine
Demanding 3D helicopter flying, with constant, vigorous attitude and throttle changes, requires an engine with a steady, dependable fuel supply. O.S. answers the call with the 55HZ-R Heli Engine, featuring the Demand Regulator System (DRS) for instantaneous response and outstanding...





