O.S. Engine OSMG0561 61FX Performance Model Air Engine  [OSMG0561]

O.S. Engine OSMG0561 61FX: Engineered for reliable flight

The O.S. Engine 61FX combines a heritage of quality with features aimed at serious model pilots. This O.S. Engine model is designed to deliver consistent operation across sport and competitive airframes.

Thermal control and mechanical resilience

The semi-square head form increases fin area to aid heat dispersal, keeping temperatures down during extended runs. Dual ball bearings improve rotational stability and cut mechanical wear for dependable service intervals.

Adjustable exhaust and fuel metering

Featuring a capable carburetor and a muffler with selectable exhaust direction and a pressure tap, the 61FX supports a variety of tuned setups. The remote needle valve offers two mounting options to make installation neater and reduce the need for cowl alterations.

The O.S. Engine 61FX is a solid pick for pilots who want a tuneable, durable engine that balances cooling, serviceability, and installation flexibility.