O.S. Engine OSMG0982 81FS-a Precision Pumped 4-Stroke Engine  [OSMG0982]

Engineered for Consistent Flight Performance

Club pilots and sport flyers often choose the O.S. Engine 81FS-a, model OSMG0982, for dependable power delivery. The built-in PD-08 pump helps maintain a steady fuel supply even during sustained knife-edge and tumbling routines.

Stable Fuel Delivery in Any Attitude

The PD-08 pump reduces the risk of fuel starvation during extreme attitudes by keeping pressure steady. That stability helps keep the engine responsive throughout aerobatic sequences.

Less Mess, Smarter Lubrication

Thanks to its recirculation lubrication, the 81FS-a returns oil internally rather than venting it into the environment. This lowers residue on fuselages and cuts the time spent cleaning after flying sessions.

For aerobatic and scale flyers looking for consistent performance and reduced oil leakage, the O.S. Engine 81FS-a is a practical choice.