Odd sized Bottom Bracket

Workshop tales, trials and disasters.
Maintenance tips, techniques and myths.
Technical discussion, description and outright lies

Odd sized Bottom Bracket

Postby martc101 » Tue Oct 30, 2012 9:46 pm

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.
User avatar
martc101
 
Posts: 129
Joined: Wed Dec 22, 2010 12:23 am

by BNA » Wed Oct 31, 2012 11:54 am

BNA
 

Re: Odd sized Bottom Bracket

Postby cotterpin » Wed Oct 31, 2012 11:54 am

Check width of shell 68mm or 70mm(Italian)
Also there's some good info HERE on Velo Base
Cheers
a man hears what he wants to hear and disregards the rest
User avatar
cotterpin
 
Posts: 997
Joined: Wed Mar 21, 2012 9:28 am
Location: St.Leonards VIC

Re: Odd sized Bottom Bracket

Postby ironhanglider » Wed Oct 31, 2012 12:51 pm

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
ironhanglider
 
Posts: 1050
Joined: Fri Apr 17, 2009 9:44 pm
Location: Bruce, ACT

Re: Odd sized Bottom Bracket

Postby martc101 » Wed Oct 31, 2012 9:57 pm

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?
User avatar
martc101
 
Posts: 129
Joined: Wed Dec 22, 2010 12:23 am


Return to The Shed

Who is online

Users browsing this forum: Tony6463



Popular Bike Shops
Torpedo 7 Torpedo7 AU
Ground Effect Ground Effect NZ
Chain Reaction Cycles CRC UK
Wiggle Wiggle UK
Ebay Ebay AU



InTouch with BNA
“Bicycles BNA Twitter
“Bicycles BNA Facebook
“Google+ BNA Google+
“Bicycles BNA Newsletter