Technical & Reference Section > Tech and Restoration

Bottom Bracket Fitting Help Needed

(1/6) > >>

Paulo:

I've bought a US bottom bracket for my firebird and the cups are a fraction too big to fit.

I've tried using a big bolt and two big washers to coax the cups on but no luck. I would ordinarily wack with my rubber mallet but the frames just been re-chomed so don't want to try it.

So my last thought is to grind the cups down.

Are there different sized US BB's, and has anyone got any suggestions?

Cheers

P.

dwain dibbly:
have you got another frame you could try the cups in??
maybe the new chrome is slightly to thick??

Paulo:

There's little chrome on the inside of the frame. It's a clean job, but I guess it still might be stopping the cups from seating.

Good idea to try the cups in another frame. I have got a goose rider I could strip and try the cups in. That'll show if the cups are the problem or the frame.

Has anyone tried to grind down either the cups or the frame.  Any advice?

P.

wildwood1971:
try freezing the cups overnite - and then fitting them one by one not letting them warm up.

Paul

Paulo:

Another good idea. I'll give that a go too.  :daumenhoch:

Thanks. I'll let you know how it goes.

Navigation

[0] Message Index

[#] Next page