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3 votes
2 answers
221 views

How to fix a bottom bracket shell that has been cut from outside?

I have a 27.5" MTB which has a damaged bottom bracket shell. When I install the bottom bracket into the shell, it does not stay in the center of the shell. It leans towards the bottom of the ...
Ender's user avatar
  • 2,168
3 votes
2 answers
2k views

I crossthreaded the bike frame using force on the BB. Can still be saved?

I have a MTB, with "normal" square taper BB, and a 3 chainring crankset from Shimano. After some problems with my pedals, I managed to destroy the fillet on the crank arms too and in the end ...
Jack's user avatar
  • 31
4 votes
3 answers
3k views

Struggling with bottom bracket installation

This is the first bike build I've attempted, so far the process has been pretty difficult but I'm especially struggling with the Bottom Bracket installation. Firstly, I have a frame with a threaded ...
DL3001's user avatar
  • 65