Off-Road Free Flight O.S. Engine OSMG1401 49-PI Type II .30 Wankel Rotary Engine  [OSMG1401]

Reliable Rotary Power for Small Airframes

The O.S. Engine 49-PI Type II .30 Wankel Rotary Engine offers compact and reliable performance for small model aircraft. Its rotary internals and precision bearings reduce vibration and deliver a controllable power band that fits many sport and scale builds.

Design Advantages of a Wankel Engine

Because the Wankel layout has fewer moving parts than a piston engine, it typically runs smoother and quieter. The two needle bearings and a ball bearing secure the rotor and add stiffness to the assembly for predictable behaviour in flight.

Output, Displacement and RPM Notes

This unit displaces 0.30 cu in (4.97 cc) and produces 1.27 hp at 17,000 rpm, with a practical operating range of 2,500 to 18,000 rpm. These figures translate into useful thrust for a variety of flying tasks when paired with appropriate props.

Installation Choices and Intake Benefits

Installers can angle the muffler to suit cowling layouts or clearance constraints. The Venturi style intake helps deliver stable airflow to the carburetor, supporting consistent mixtures across throttle settings.

The O.S. Engine 49-PI Type II .30 Wankel Rotary Engine is a compact solution when you need smooth, lightweight power. Its installation flexibility and dependable running suit a range of small aircraft projects.