it's doable, thank god
when you encounter an alu bb cup with a f#cked up outside ring, stuck inside the bb shell of an alu* frame - like this deceased (brutally murdered, actually) dura ace unit, you could try the following:
sincerely, your amateur technician/butcher peter v
SAdly it doesn't work with Campy Veloce/Mirage or Shimano UN or cheap BB's where you can't really pull out the axle...! :(
Nice job tho ;)
I am going to give this a go as Im part way there having cut a slow in already, just need to follow up after seeing this and gaining a sliver of hope.
Sidenote anyway, I have a Campag Veloce BB and you can remove the BB internals including axle/spindle etc by taking one side off (Ive only tried with non-drive side removed) and giving the axle on the other side a hard whack with a hammer. It was only a push fit into the remaining cup, although very tight so it took a number of sharp hits to free it up.
PS if you try that and bend your frame or something don't blame me, just passing on what happened!
Just to add my two-penny-worth. Might help someone in the future:
Shimano UN54 BB in an Alloy frame -
been on for several years & when it got crunchy I couldn't get the fucker off.
Tried plenty of Plusgas & eventually bent my wife's extending wheel brace. So bought a 27" long breaker bar to add leverage but it still wouldn't shift. By now the thought of ruining the paintwork using a blowtorch seemed like the only option, then I read online someone using hot water ...
One kettle of water later & a lot of 27" long breaker bar leverage & the fucker moved!!!!! Can't put in words the joy this gave me!
I've still got my BB stuck into the marin frame.....suppose the boiling water expanded the frame and gave the BB shell a bit of breathing space?
I don't care about the paintwork, might just get a blow torch out, and I could really do with a hack bike too
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