The GRAUPNER aircraft engine is next to the OS-RE-49 and the OS-RE-49-PI-II the second rotary piston model engine produced in series for model making 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 soundproofing.

The recirculating direct intake has further improved the speed and performance. This engine is a precision machine in terms of construction, but robust in practical use. The design and careful manufacturing ensure high operational reliability and a long service life.

This engine was first listed on the O.S. ENGINES line card in 1982. The corresponding Graupner order number is 1801. Further data can be found in the associated blueprints.

Interesting: Limited to 100 pieces worldwide, GOLD EDITION.

The animated video on the right shows the rotation simulation of the three-arched rotor within the two-arched trochoid housing. The data was generated in CAD within the mechanism module and is used to check and simulate the rotation behavior.

Other engines