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-   -   bottom bracket sizing (https://www.bikeforums.net/singlespeed-fixed-gear/538402-bottom-bracket-sizing.html)

whatsham 05-05-09 11:52 AM

bottom bracket sizing
 
hey all.
does anybody know what size bottom bracket an affinity frame takes?

or

how i can measure it accurately myself

Aeroplane 05-05-09 01:58 PM

99.99% chance it takes a 68mm english threaded BB.

guaps 05-05-09 02:21 PM


Originally Posted by whatsham (Post 8859849)
hey all.
does anybody know what size bottom bracket an affinity frame takes?

or

how i can measure it accurately myself

Calipers are the most accurate, but you can use a ruler that has mm on it. Just measure the frame width where the bottom bracket goes. More than likely, it will be either 68mm (english) or 70mm (italian) - and as the last poster said, it's almost certainly 68mm.

If you measure it and get 69mm, buy a new ruler. :thumb:

arneyz 05-21-09 11:20 PM

I'm looking at sheldon brown's website for crank sets and it's talking about 107mm and 103mm BBs. But when i look at bottom bracket sizes they are all like you mentioned, 68 or 70mm. What should i be looking for?

arneyz 05-21-09 11:30 PM

nvm. I figured it out. Sorry for the noob question. :)


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