Originally Posted by
jvinch
Thanks for your help guys. I came up with a very low-tech way of solving the problem. I dumped boiling water on the crank arm, thereby expanding it. I used a hammer and 2x4, hit it a few times and it popped right off. Now in need to try to re-thread the crank arms.
Hot water... what a great simple solution.
Get a helicoil, it is common practice on stripped pedal threads so a crank cap is nothing. Helicoil inserts are very strong, many times more than the original alu thread.