Scrambler1,
I also have a Clinton 2-stroke engine that looks like the Panther A400 engine mentioned, but it is orange and marked: MOD 500-0140-034 SER 30300120 and it does not say Panther on it. It's time to put it on a minibike, but it has a 6-1 gear reduction on it which means that I will need to machine the gear off the end of the crankshaft (I have the carbide tools) and I generally don't make permanent mods to vintage engines. It wouldn't be all that hard to make an adapter so that a 3/4" centripetal clutch could be mounted and I have all the necessary machine tools to do it. Still, it seems like you may have a replacement crankshaft. Maybe I could buy a replacement crankshaft from you?? I live in Ridgecrest, Ca., about 50 miles S.W. of Death Valley. What do you think?
tinkertoykid