Rehabbing an early 80's Trek 510 with Triomphe gruppo and cracked the DS bottom bracket cup with the Sheldon removal tool. Does anyone know what my options are? Spindle is 114.5 asymmetrical. A brief search on i-net and Forums hasn't given me a simple option for a newer cartridge replacement. Or can I find the correct replacement cup? Thoughts?

Any English-thread, Campagnolo thin-cup should do.

-Kurt

Excellent. I'll poke around for one. I don't know much about Campy, though. How do I distinguish thin from otherwise?

The thick cups have a threadlike design lining the spindle hole to keep the bearing grease from seeping out:

https://velobase.com/ViewSingleCompon...m=119&AbsPos=5

The thin cups do not have this feature, and are a bit thinner in this same area, hence the "thin cup" term.

-Kurt

Awesome. Thank you for the tutelage.

Do the grease threads work? I'm sure there's an obscure Jobst Brandt thesis about this somewhere out there.

As long as we're at it, any thoughts as to where I can find a solo cup?

They do not work. Not well, anyway.

For the fixed cup? I know of a fellow with a NOS Nuovo Gran Sport BB available (forum member nine14six), which uses these cups, but I do not know of a source for a solo cup. I know I have a loner English Campag thin cup, though I don't know if it is the fixed or adjustable - I think it is the adjustable, unfortunately.

EDIT: Yep, it is an adjustable cup. Sorry about that.

-Kurt

Again, my ignorance - what makes it adjustable? Hope you don't mind edu-ma-cating me.

Adjustable in the sense that you do not bottom it out against the frame, as with the fixed cup. The adjustable cup is spun around until the bearings are seated correctly (right between too tight and too loose), then locked in place with the lockring.

-Kurt

Doh. I always use DS and NDS to refer to the different cups and wasn't thinking clearly about what you were talking about. I forget that there's other language for it. Thanks for the help.