The Hercules W-2000

Considered the first production motorcycle with a Rotary engine.

A 27hp,  294cc Wankel Engine

About 1,800 units were built between 1974-1977

~ 400 lbs. wet weight

Plagued with high insurance rates due to miscalculation of engine size and considered “Less performance for More money”, it just didn’t take off 🙂

A good read can be found on Silodrome –  Linky Here

And more info on WikipediA