Sheared bottom bracket cup removal ideas

Hey, The drive side bottom bracket cup on my Carlton has sheared off, and about 2/3's of it is stuck still threaded inside the frame. There is nothing protruding outside of the actual frame, so nothing to get a tool on at all.

Just wondering if anyone know of any magic tool or method to get hold of the broken part, in order to remove it from the frame....?

Or is is a case of a frame builder replacing the bottom bracket shell....? (in which case it is possibly not worth the expense....)

Cheers for any ideas....

Can you get a screwdriver or drift in there against the sheared edge and tap with a hammer?

Post a photograph

Use a hacksaw blade to carefully cut through the threads of the BB in 2 places then it will just fall out. Easy as that...

I'll have to have a look come Monday regarding the drift/screwdriver and I'll bring a hacksaw blade along as well in case that doesn't work....The bike is languishing at work until then and I'll have to take the cranks etc of 1st to get in (no tool with me today) so I'll give it a go then.

Cheers for the suggestions...

Hang on. Is it sheared off like this, which is what I had in mind when I answered:

or do you mean it's sheared along the circumference so there's a whole ring left in there? In that case, I agree with chiroshi.

Hard to tell for sure with the crankset still on, but it's definitely sheared fully off along the circumference and come clean off, the outside part is hanging round the axle like a ring. Whether there is a jagged edge to get a drift or flat-head screwdriver blade on I can't quite see at the moment, but if not looks like the thinking is hacksaw blade is the way to try,so I'll give that a go Monday.

A frame builder would melt it out with oxy acetylene before replacing the shell.

Is it just the cup left in there or the whole unit?

Post a photograph

v

If you can not bear the sound of metal on metal take it to a bike shop . Cold chisel and a hammer is the first option . Saw next then a blow torch.

if you can get the other cup out and BB leaving just the threaded ring in there ive managed to extract one before by expanding an old quill stem with the wedge inside the tube, clamping a pole into where the handlebar would normally clamp and then turning it out.

edit/pic might explain

#rep

Top bodge.