i was wrong haha, never really called pedals "crank arms" but then again ive never been a big biking guy either. First thing that came to mind with crankarm was crankshaft!
yeah, don't take advice from me...Grats on figuring out a way to motor assist the pedals instead of motor assist the WHEELS!!!
and while you are messing with your transmission....don't take my advice on how to modify clutch springs or reshoe them for $2 etc etc.
so go ahead and let me have it because yall not gettin another chance anytime soon. :P