• 12-21-2012
    shreddr
    Can you bore a threaded BB to PF30?
    I have a carbon frame with derailleur hanger that I would like to turn into a singlespeed without the use of a tensioner. Is it possible to bore out the threaded BB to a PF 30 so I can use an EBB?
  • 12-21-2012
    wabiker3576
    I doubt it, I wouldn't .. just use one of these Philcentric Outboard Bottom Bracket Cups
    Phil Wood & Co.
  • 12-22-2012
    smdubovsky
    http://problemsolversbike.com/files/..._Reference.pdf

    BB30 is 42mm ID. PF30 is 46mm ID. You have to ask yourself if you can machine 4mm out of the ID and still have a strong enough shell (or any left at all most likely.)
  • 12-22-2012
    Berkley
    Quote:

    Originally Posted by smdubovsky View Post
    http://problemsolversbike.com/files/..._Reference.pdf

    BB30 is 42mm ID. PF30 is 46mm ID. You have to ask yourself if you can machine 4mm out of the ID and still have a strong enough shell (or any left at all most likely.)

    I believe the OP has a standard threaded BB shell, in which case it definitely will not work.