Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Bring It! Sailguy's Avatar
    Join Date
    Oct 2002
    Location
    Bay Area, CA
    My Bikes
    Torelli - Trek 520 - GT - and some old Schwinn Thing
    Posts
    611
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Clicking sound from Bottom Bracket

    Whenever the drive-side crank arm is at the 12 o'clock position I am getting a clicking sound, and occasionally immediately thereafter in the 3 o'clock postion.

    I just went out and got the Bicycling Magazing Maintence book, and it doesn't talk about this problem. This weekend I was planning on pulling out the assembly, cleaning it, looking for damage and re-lubing it.

    Does anyone have an idea as to possible causes for the noise? When I am not actually riding, and putting pressure on the chain system, there is no noise at all. Even using a mechanic's stethoscope I cannot hear the noise.

    Any help would be appricated.. Thanks!
    Sailing and Cycling make the world go 'round. Quietly Too!

  2. #2
    Mr. Cellophane RainmanP's Avatar
    Join Date
    Nov 2000
    Location
    New Orleans, LA
    Posts
    3,037
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    First of all, and this is not a gig just advice to all who read it, questions about chains, deraileurs, cogs, and bottom brackets should be posted under Bicycle Mechanics. There are plenty of very knowledgable people (ie, not me ) who can help. Joe will probably move these posts when he sees them.

    Clicking from the bottom bracket, or apparently the bottom bracket, can drive you crazy because it can be caused by so many things, some not even close to the bb though it sounds that way. First, I guess, you can check the bb itself. If it is the older cup and cone type as opposed to the newer cartridge bearing type, it may need to be cleaned, regreased and adjusted.

    Just a couple of weeks ago mine suddenly started making a noise just as I left the office on my way home. I stopped at my LBS (which I originally picked a couple of years ago precisely because it is on my way home. One of my better decisions.). Within minutes my favorite wrench had pulled the bb completely out, cleaned it thoroughly, repacked the bearings and replaced everything. Problem solved. Normally I do such things myself, but a lot of times when things happen between the office and the LBS I just let them do it if they can do it then. That way I don't have to let something go until the weekend when I may or may not snatch the time to do it myself.
    If it ain't broke, mess with it anyway!

  3. #3
    The Cycling Photographer SipperPhoto's Avatar
    Join Date
    Jun 2002
    Location
    Orange, CA
    Posts
    1,411
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had about the same problem at the beginning of summer.. when I was jsut riding normal, or off the bike, no sound at all.. when i started to crank it a bit.. there was the mysterious "click of death"... I started easy and tightened the bolts on the chainrings first... and voila, the noise went away... I should take the bottom bracket apart this winter and regrease and re-pack it.. i'm sure it needs it....

    Jeff
    Jeff

    Check out TorelliFan.com! Submit your bike, tell us about an epic ride, or just come to check out the eye candy!

  4. #4
    Senior Member
    Join Date
    Aug 2001
    Location
    Punta Gorda Florida
    Posts
    207
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Grab your pedal firmly and try to move it back and forth. I had a practically new Look pedal lose a bearing. Actually part of a an extension of the casing of the bearing broke. I was getting some weird noises that I thought was the crank. The noise would come and go....
    All right partner, keep on rollin' baby, you know what time it is....

  5. #5
    Senior Member
    Join Date
    Jun 2002
    Posts
    1,372
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Originally posted by SipperPhoto
    [B I should take the bottom bracket apart this winter and regrease and re-pack it.. i'm sure it needs it....

    Jeff [/B]
    Not if it's a carteidge type.They just get repalced when they go bad.

  6. #6
    Career Cyclist threadend's Avatar
    Join Date
    Feb 2002
    Location
    Michigan, USA
    Posts
    551
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The last two times my BB was clicking it ws remedied by:
    • removing and teflon taping the BB's cup threads and re-assmbling
    • removing, cleaning and greasing my seat post and replacing

    as said earlier, it can be a myriad of things that are related to stressing different parts of the bike at different spots in the pedal stroke that seem to be the BB but aren't necessarily.
    2003 Iceman Challenge - 2:34:55 - 897 / 2,000*
    2002 Iceman Challenge - 2:39:23 - 1093 / 2,186
    2000 Iceman Challenge - 2:49:18 - 1516 / 2,153
    *estimated

  7. #7
    The Cycling Photographer SipperPhoto's Avatar
    Join Date
    Jun 2002
    Location
    Orange, CA
    Posts
    1,411
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Originally posted by pokey
    Not if it's a carteidge type.They just get repalced when they go bad.
    True... the bike is about 10 or 12 years old... a Centurion LeMans, almost all original parts... I've been slowly modernizing as much as I can, without spending a grip of money. I'm not really sure if it is a cartridge type or not.. I'll have to wait until xmas time, when I get into my new place and actually have a garage to work in.

    Jeff

    p.s. Pokey, you are the man !! I love all yer posts, yer a real pain in the ass :-) heheh
    Jeff

    Check out TorelliFan.com! Submit your bike, tell us about an epic ride, or just come to check out the eye candy!

Posting Permissions

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