O.S. Engine OSMG0678 140RX-P Reinforced F3A Motor  [OSMG0678]

O.S. Engine 140RX-P Designed for Pattern Performance

Targeted at pattern and aerobatic pilots, the O.S. Engine 140RX-P combines a 23 cc displacement with a 3.5 hp output to deliver controlled thrust for complex routines. It is suitable for larger pattern airframes that demand reliable, steady power.

Efficient Low-Speed Power and Rugged Build

The engine is optimised for effective power at lower revolutions, enabling the use of larger propellers and helping to reduce overall noise. Structural features like the reinforced beam mount and one-piece crankcase are intended to resist the vibration and loads from advanced aerobatic flying.

Heat Management Extended Beyond the Port

Fins that extend past the exhaust port boost cooling capacity, which is important for enclosed cowlings and prolonged contest flights where temperature control affects consistency.

The O.S. Engine 140RX-P offers a balance of power and durability for pilots who need a steady, long-lasting engine for competitive pattern flying.