Originally Posted by FarHorizon
Title says it, pretty much - I've a crank (drive side with chainrings) where the cap threads are stripped. This is an older square-axle crank. Since my Park tool won't thread into the cap threads, I can't use it to remove the crank from the axle. I need some "brute-force-and-awkwardness" way to pry the crank off the axle without damaging the bottom bracket or the chainrings. Any ideas?
Thanks!
You don't have to destroy it! In fact, you can use it again if you want.
Find a socket that just fits inside the square of the crank arm.
Put the socket on a cement floor.
Place the bike over the socket so the socket is inside the square of the crank arm. Have someone hold the bike.
With a flat punch and a BFH (big f@cking hammer), hammer on the crank arm as close as you can to the bottom bracket. Put a big flat washer between the punch and the crank arm to protect the soft metal.
Took me 2 wacks to get it off last time I did it.