Stuck square taper BB – best side to start on?
ok, non-drive side it is. I might soak the threads in some more WD40 tonight.
Any idea if it’s possible to get it going with a chisel and big hammer with the frame sitting on the ground if the proper tool doesn’t work? Just looking for ideas. It wouldn’t be a great loss if the frame goes in the end as I’ve had it a very long time now (it uses cantilevers and Suntour thumbies) but it’s my pub bike and there is a small emotional attachmentPosted 5 years ago
lever? I’ve got the tool in a bench vice and i’m using the frame as the lever 🙂
Success – sort of. With the skewer to hold the tool in place I can now use the larger tool. Unfortunately even though the lock ring is alloy it appears to be an alloy of emmental and gruyere so it stripped 🙁
The surprising news was that the drive side came out using the same technique, leaving the BB stuck in the other half. Nothing a large hammer couldn’t fix.
So I’ve got a stripped locking sleeve stuck in the BB but I’ll soak it in WD40 overnight and try and cut it out gently tomorrow. I’m a happy manPosted 5 years ago
kettle full of boiling water on the frame
Interesting idea. I’ve always tried using a hot air gun before but it’s never really worked. Hot water would be able to dump heat in faster so could be a winner. Don’t need it now but stored in memory – tx
(I’ve also tried with hot air on the outside and freezer spray on the inside. Invariably a waste of freezer spray)Posted 5 years ago
Out of interest – how would you get it out using a hole saw? It sounds like there would be a lot of work involved
33mm hole saw, drill bit in the middle goes down the axle as a guide – the saw cuts out the BB cups neatly, leaving the threads behind. I love doing it that way – I quite often get people bringing me bikes with stuck BBs, often after other shops have had a go and given up, and I get it out in 15 minutes 😉Posted 5 years ago
So, I’ve got a square taper BB that is thoroughly locked in place and requiring a bench vice and lots of oomph to get it out. It there a best side to apply this oomph, ie. do you work on the locking sleeve (non-drive) side or the fixed (drive) side
All wisdom appreciatedPosted 5 years ago
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