Mercedes built several three rotor and four rotor prototype engines
that went into a very slick little wedge shaped prototype car in the
early seventies. mercedes never considered the wankel a viable engine
and killed the project after about four years of research. Try google.
There's plenty out there on that including pictures of the c111 car
itself which was really a beautiful example of seventies wedge shaped
design. Reminds me of a Saab Sonnet.
Have a better one -
It was a very interesting engineering exercise. What most don't remember is
that MB took the C-111 and put in a diesel, the C-111 III in 1976. Also,
the C-111's suspension design was the basis for the "multi-link" system that
debuted on the W201.
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