Hello people
I have found in a old magazine (1965) a construction plane for a rotary piston engine. I know the picture and the construction are not optimal, but the article's interesting.
Displacement: 9.2ccm
Power: 1.5 HP @ 12'000 rpm (I heard the engine has only 1.0-1.2 HP)
Download in a better quality (caution klick only the blue (not green) button "DOWNLOAD" No exe-file to install !!!)
File-Upload.net - WankelmotorBauanleitungFGr.zip
CAD Example
http://tir38.com/wp-content/uploads/2007/03/wankel.zip
https://tir38.com/archives/73
best regards