The GRAUPNER aircraft engine is after the OS-RE-49 and OS-RE-49-PI the third and final variant of the rotary piston model engine produced in series for modelling, based on the principle developed by Dr. Felix Wankel, which corresponds to the four-stroke system. Its outstanding features are its powerful running, the almost complete absence of vibration and the effective silencing.

Due to the strong ribbing of the trochoid on the combustion side, the engine is thermally uncritical. The characteristic feature of the rotary engine is its almost complete absence of vibration, which is not possible with reciprocating piston engines of comparable power. The engine works on the four-stroke principle and can therefore be excellently silenced using simple means. The throttle carburetor enables continuous speed control. The mounting ring allows for quick and secure three-point attachment of the engine to the head frame of the fuselage.

This engine was first listed on the O.S. ENGINES line card in 2006. The corresponding Graupner order number is 2717. Further data can be found in the following blueprints.

Interesting: The GOLD EDITION limited to 100 pieces worldwide.

Other engines