Advertise on Bikeforums.net



User Tag List

Results 1 to 4 of 4
  1. #1
    Gears? CliftonGK1's Avatar
    Join Date
    Jul 2006
    Location
    Philadelphia, PA
    My Bikes
    '08 Surly Cross-Check, 2011 Redline Conquest Pro, 2012 Spesh FSR Comp EVO, 2009 Spesh Singlecross
    Posts
    11,347
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Clicking/Ticking bottom bracket

    I've isolated it to the bottom bracket:
    - The noise also happens when I'm standing, so it's not a saddle creak.
    - The noise is present if I spin with only one foot, either side; so it's not a pedal problem.
    - I checked the crank bolts and the arms are not loose.
    - I checked the chainring bolts and they are not loose.

    It happens at the same spot in the pedal stroke, forward or backward. It's a click/tick as the crank moves past a certain position. It doesn't happen without pressure on the pedals; just spinning them in the stand won't do it, but if I apply the rear brake and use some force on the cranks I can make it happen.
    The BB doesn't feel as though it's sticking at that spot when I spin it by hand. It's a less than 1yr old UN54, so I don't think it's a problem with the bearings.

    I'm going to take it out and regrease the threads and see if that helps.

    The Question: Would riding all fall/winter/spring through the soaking rain eventually deteriorate or wash away the grease I used when origainally installing the part, leading to this noise?
    "I feel like my world was classier before I found cyclocross."
    - Mandi M.

  2. #2
    Ovdabak, OR DArthurBrown's Avatar
    Join Date
    Feb 2009
    Location
    Oregon
    My Bikes
    2008 Mercier Corvus Steel, 2007 Trek 4300, ~1980 Takara Deluxe 12, 1985 Trek 620 (modernized)
    Posts
    494
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yep. Most likely, a thread is clicking somewhere. I see you checked the pedals. It's best if you can swap the pedals out entirely to test. Certainly try regreasing each pedal thread, even if it doesn't seem like that's the issue.

    The next step would be to regrease all threads, doing one set at a time for testing purposes, in case it happens again.

    What sort of crank and bottom bracket are you using?

    EDIT: I see it's a UN54. It's unlikely the bottom bracket itself is clicking, but the threads may very well be.

  3. #3
    Gears? CliftonGK1's Avatar
    Join Date
    Jul 2006
    Location
    Philadelphia, PA
    My Bikes
    '08 Surly Cross-Check, 2011 Redline Conquest Pro, 2012 Spesh FSR Comp EVO, 2009 Spesh Singlecross
    Posts
    11,347
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DArthurBrown View Post
    Yep. Most likely, a thread is clicking somewhere. I see you checked the pedals. It's best if you can swap the pedals out entirely to test. Certainly try regreasing each pedal thread, even if it doesn't seem like that's the issue.

    The next step would be to regrease all threads, doing one set at a time for testing purposes, in case it happens again.

    What sort of crank and bottom bracket are you using?

    EDIT: I see it's a UN54. It's unlikely the bottom bracket itself is clicking, but the threads may very well be.
    It's a Sugino XD700 crank.

    While I'm greasing things up, it can't hurt to have the pedals off and re-grease them, too. Once I ruled them out as the culprit, I shouldn't have been so quick to write them off. Some preventive maintenance will keep them from becoming the next noise I have to track down.
    "I feel like my world was classier before I found cyclocross."
    - Mandi M.

  4. #4
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,177
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Torque the BB to specs.

Posting Permissions

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