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Old 03-07-15 | 09:17 AM
  #4  
gremlin75
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Joined: Jan 2015
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Originally Posted by dabac
68 is the width of the BB shell the BB is meant for. 113 is the axle length. 1.37 is dia in inch and 24 is 24 threads per inch.
If you go to 1x10 you should use a slightly shorter BB to get the chainline right.
If you'd only removed the fder, then you would have needed to add a spacer.
Now, start by figuring out your chainline, then buy the appropriate BB.
Yeah I know the sizing of the BB (though wasn't positive on the thread info so thank you), that info was just put in there incase it helped with the other question. My assumption was that since I was going from a triple up front and that the chainring will go in the middle spot the chain line should be fine. Is this not the case?

Originally Posted by dedhed
An external bearing BB requires a new crank designed for it
Yes I understand that, thats half the reason I'm looking into possible switching to an external BB. I just want to make sure that switching BB types is as simple as just getting my BB shell faced and then screwing in the new BB. So is that the case? If that is the case question #4 is what I'm most concerned with.

EDIT: added a picture of the BB weld to the first post.

Last edited by gremlin75; 03-07-15 at 10:35 AM.
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