Hercules Enduro 250 Wankel rotary conversion

In 1965, moto brand Hercules had their 250cc enduro bike that could be swapped between piston engine and Wankel rotary engine. This cylinder/rotor/eccentric shaft went in place of the normal cylinder, and a bevel drive gear replaced the crank webs. Motorbikes were so much cooler in the sixties.

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