- Re-threading crank?
I managed to mash the pedal thread of an XT crank years ago, fortunately I was working in an aerospace engineering place with a full toolroom. Machined out the damaged thread, cut a new thread in the hole, machined an insert in stainless steel, threaded in and loktited in place, drilled new pedal thread in insert. Was probably stronger as a result as the contact patch between hard steel and soft aluminium was about double what it was originally.
Basically fitted a big custom helicoil 🙂
Might not have been quite so simple had I just been armed with normal garage tools though!
Cheers, RichPosted 4 years agomaximusmountainMember
I have re-threaded cranks before (based on my cranks being two right hand threads instead of a left and a right) but the re-thread wouldnt work due to not enough material. You would need to drill it out, make an insert, make sure the insert was tight (lots of loctite bearing sealer and potentially lots of grub screws) and then use the tap to thread it. Would not recommend. Use a helicoil or buy yourself a lathe/milling machine and a 7/16th left/right tap.Posted 4 years ago
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