o.s.


graupner o.s. wankel 30

RC Airplane Engine Assembly Video

This disassembly and reassembly video from Academia Motor may just be the best thing you’ve watched yet in 2018 — really! Some internet sleuthing shows that the Graupner-O.S. Wankel .30ci powerplant was the world’s first model rotary piston engine. A collaboration between Graupner and Ogawa Model Mfg. Co. (O.S.), it used Felix Wankel’s design with […]
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