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Odd sized Bottom Bracket

Posted: Tue Oct 30, 2012 10:46 pm
by martc101
I am currently building up a classic Farleigh steel track frame, however have come accross an odd situation with the bottom bracket.
I went to try some standard british cups in it however they fell through... Italian or French you might say, however I measure the ID and it is at 35.4, so neither. Also has LH, RH thread standard for Engligh (or Swiss) BB's. I consulted Sheldon, but no joy. It appears the BB has been retreaded, but to take 1.4mm of the ID is some serrious rethreading. Has anyone come accross a problem such as this? Any suggested solutions welcome.

Re: Odd sized Bottom Bracket

Posted: Wed Oct 31, 2012 12:54 pm
by cotterpin
Check width of shell 68mm or 70mm(Italian)
Also there's some good info HERE on Velo Base
Cheers

Re: Odd sized Bottom Bracket

Posted: Wed Oct 31, 2012 1:51 pm
by ironhanglider
That is a bizarre problem. You need a slightly less bizarre solution.
prestine-threadless-68mm-sealed-bearing-bottom-bracket-for-frames-with-damaged-threads

Cheers,

Cameron

Re: Odd sized Bottom Bracket

Posted: Wed Oct 31, 2012 10:57 pm
by martc101
Thanks for the replys guys
I had been considering a BB for damaged threads, the constructor site also have them available:
http://constructeur.com.au/all-products/bottom-brackets/grand-cru-bottom-bracket-threadless/
I have heard that they can be problematic in maintaining their tightness... any experiences?