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Technical & Reference Section => Tech and Restoration => Topic started by: kenloen on April 26, 2011, 10:59 PM

Title: Bottom Bracket help needed
Post by: kenloen on April 26, 2011, 10:59 PM

Hi,

I am new to bmx builds and need some help. I have bought a 86 PK ripper frame and forks to build and have been getting a few bits and bobs. So I just got hold of a Profile racing 3 peice crank and now I need a bottom bracket. I know the spindle axel is 19mm and if I knock the old cups out of the frame the inside frame measures 52mm.

can anyone advise what kind of BB I need, or are they generic for all frames and just the axel size differs?

cheers Jason

Title: Re: Bottom Bracket help needed
Post by: wildon on April 26, 2011, 11:01 PM

Will be a US bb .. any cup that size will fit .. spindle sizes differ, should be pretty easy to find a Profile bb for that  :daumenhoch:

Title: Re: Bottom Bracket help needed
Post by: Betty on April 26, 2011, 11:08 PM

This is what you need....  :daumenhoch:

http://cgi.ebay.co.uk/bmx-bike-diamondback-sealed-bearing-bottom-bracket-bmx-/270738272827?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item3f0942323b#ht_600wt_905

Title: Re: Bottom Bracket help needed
Post by: kenloen on April 26, 2011, 11:12 PM

many thanks!! On a roll..


soz for double post.