Crank/Chainstay clearance- Mtbr.com
Results 1 to 4 of 4
  1. #1
    mtbr member
    Reputation:
    Join Date
    Aug 2006
    Posts
    30

    Crank/Chainstay clearance

    I just finished my build of a ti ss and am having an issue with the crank arm grazing the chainstay when I stand and climb steep stuff. I'm running a well centered Phil's BB which gives me about 1/8 inch of crank/chainstay clearance on each side. Apparantly it's not enough. Any recommendations on spacing?

  2. #2
    Out spokin'
    Reputation: Sparticus's Avatar
    Join Date
    Dec 1999
    Posts
    9,622
    I feel most comfortable with about 1/4 inch of space in there. I just installed a new crank on my old bird and had to go from a 113mm BB spindle (old crank) to a 122.5mm spindle (new crank)! Whoa!

    --Sparty
    disciplesofdirt.org

    We don't quit riding because we get old.
    We get old because we quit riding.

  3. #3
    mtbr member
    Reputation: dirtdirt223's Avatar
    Join Date
    Mar 2006
    Posts
    389
    sounds like you might need a bb with a longer spindle.

  4. #4
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
    Join Date
    Dec 1998
    Posts
    48,236
    Quote Originally Posted by glenndandy
    I just finished my build of a ti ss and am having an issue with the crank arm grazing the chainstay when I stand and climb steep stuff. I'm running a well centered Phil's BB which gives me about 1/8 inch of crank/chainstay clearance on each side. Apparantly it's not enough. Any recommendations on spacing?
    Whatever it takes for the crank to not rub. I have bikes with as little as 2mm of clearance with no rub and others have needed 5mm or more.
    mtbtires.com
    The trouble with common sense is it is no longer common

Members who have read this thread: 0

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.