Ok I’ve searched a bit but really can’t find any leads on what the frig this neat little dual variated motor is or what it was originally mounted on. No markings to be found, haven’t pulled the top end yet to check porting or check stroke but I’ll get to it. Got a lot of people stumped so let’s see if anyone here knows?! Funky clutch too check it out, just a sprung friction ring thingy with a stop on the bell to keep it in place: