Fixed cup removal (with pics)

[rmwesley]

Guaranteed I'm not telling anyone anything new with this post, but for the sheer satisfaction of removing a very, very fixed bottom bracket cup I'm going to post up a few pics of my Sheldon Brown fixed cup remover. The fixed cup in question... defiantly refusing to move even a gnat's chuff after soaking in PlusGas for a month.

 

[rmwesley]

Slightly upgraded Sheldon Brown tool:

- 100mm M16 hex head bolt (or the biggest diameter you can get, which will still fit through fixed cup hole)
- M16 hex nuts
- M16 penny washers
- 75mm length of thick wall steel tube with inner diameter approx. 1-2mm larger than the bolt, i.e. 17-18mm in this case.

Plus a breaker bar, socket to fit M16 hex head bolt and an adjustable wrench.

 

[rmwesley]

Fit the tool together inside the bottom bracket. The steel tube should extend out of the non-drive side slightly.

 

[rmwesley]

Tighten the hex bolts to clamp the fixed cup between the steel tube (inside BB) and penny washers (outside BB).

 

[rmwesley]

Once tightened sufficiently, put your back into the breaker bar turning clockwise, removing adjustable wrench obviously

 

[rmwesley]

Fixed cup concedes you are too clever for it and removes itself to reveal the horrors inside the bottom bracket.

 

[rmwesley]

No damage whatsoever to the fixed cup.

 

[Henne]

Great write up and pics of tools and hardware used.

 

[The Bat]

Thanks for taking the time and effort to do post this, it's what forums are all about.

 

[novocaine]

That's a stunt cup, I refuse to accept it as real.

nicely done, beats trying to use an adjustable spanner across the flats.