O.S. Engine OSMG0877 72FS-a Off-Road Style Four-Stroke Aeroplane Engine  [OSMG0877]

Power and Practicality from the O.S. Engine 72FS-a

The O.S. Engine 72FS-a builds on the strengths of earlier FS-a series engines such as the 56FS-a, 81FS-a and 110FS-a. Its four-stroke layout and blow-by internal oil design remove the need for a standard crankcase, which helps cut down routine maintenance without sacrificing durability.

Features That Simplify Mounting and Tuning

This version includes a reversible 61N carburetor and a narrower camshaft housing to ease installation in tight cowlings. The supplied F-5030 muffler can be rotated a full 360 degrees to suit different exhaust routing and to tune the audible character of the engine.

Suitable for Diverse Flying Styles

With a practical RPM envelope of 2,400 to 12,500 and a power output of 1.2 hp at 11,000 rpm, the 72FS-a serves sport flyers and scale builders alike. Improved machining tolerances mean fewer adjustments and more reliable service intervals.

The O.S. Engine 72FS-a is a pragmatic pick for modelers wanting a robust four-stroke that is easier to fit and maintain while delivering authentic engine notes in flight.