O.S. Engine OSMG0678 140RX-P Precision F3A Powerplant  [OSMG0678]

O.S. Engine 140RX-P Built for Precision Aerobatics

For precision aerobatics pilots, the O.S. Engine 140RX-P is engineered to meet the demands of F3A pattern flying. Its 23 cc displacement and 3.5 horsepower output deliver steady power for complex manoeuvres, helping larger pattern models fly with authority.

Low-RPM Torque and Structural Strength

This unit is tuned to provide strong performance at lower RPMs, allowing larger diameter propellers to be used and cutting perceived noise during flight. The reinforced beam mount and single-piece crankcase are built to handle the loads and vibration common in high-G aerobatics, improving long term reliability.

Extended Cooling for Consistent Runs

Cooling fins extend beyond the exhaust port to boost heat dispersion, a key feature for enclosed cowlings and hard-working competition engines. That extra fin length helps keep temperatures stable during extended flight sequences.

The O.S. Engine 140RX-P is a solid choice for advanced hobbyists and contest pilots who want a durable powerplant capable of driving large props and handling the stresses of pattern flying.