Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Junior Member
    Join Date
    Oct 2007
    Posts
    9
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Cantilever Brakes off center - Very frustrating

    First of all, I'd like to say I did my homework on this one. I checked the Park Tool site, Sheldon Brown, and some others. Basically what's happening is that one side of the brakes is hitting the rim before the other. Even if I have the pads perfectly centered, when I pull the side where you release them is moving before the side where the anchor bolt is. I've tried adjusting the transverse and cable that comes from the brake lever. I've tried centering them with the allen key on one of the cantilevers. I've run out of ideas.

    One thing I do see is that after I squeeze the levers, the carrier seems to move off to one side. It doesn't seem perfectly centered. How can I change that?

  2. #2
    Alex Ramon BicycleTutor's Avatar
    Join Date
    Dec 2007
    My Bikes
    90's chromoly GT MTB frame, customized for communting and cycle-touring
    Posts
    39
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Is the gap between the rim and the fork blades (or rear stays) exactly the same on both sides? It could be your rim is off center from the frame.

  3. #3
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BicycleTutor View Post
    Is the gap between the rim and the fork blades (or rear stays) exactly the same on both sides? It could be your rim is off center from the frame.
    Huh? Offcenter from the fork yeah?
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  4. #4
    Senior Member
    Join Date
    Sep 2001
    Location
    Montreal
    My Bikes
    Peugeot Hybrid, Minelli Hybrid
    Posts
    6,521
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    First clean and grease the pivots. Switch the return spring on one side to the next hole at the base of the boss. Then readjust the centring screw.

  5. #5
    Senior Member halfspeed's Avatar
    Join Date
    Nov 2003
    Location
    SE Minnesota
    My Bikes
    are better than yours.
    Posts
    10,826
    Mentioned
    35 Post(s)
    Tagged
    0 Thread(s)
    If you've ever overtightened the bolts, you could have mushroomed one of the canti studs, creating friction.

  6. #6
    Junior Member
    Join Date
    Oct 2007
    Posts
    9
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Cantilever Brakes off center - Very frustrating

    Thanks for all the help guys. Yes, my rim and wheel are centered. That was the first thing I checked. I do notice that if I adjust the centering by using the allen key I can get them to line up pretty well, but when I squeeze the brake levers they seem to go back to their slightly un-centered alignment. I think I'll clean them up a little and loosen the bolts a little and see what happens.

  7. #7
    Senior Member swc7916's Avatar
    Join Date
    Sep 2007
    Location
    Machias, WA
    My Bikes
    Rodriguez Toucan tandem, Rodriguez Rainer Lite sport/touring
    Posts
    712
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've had this problem too and it seems to be caused by either unequal spring tension (one side is tighter than the other) or friction.

  8. #8
    Body By Nintendo Psydotek's Avatar
    Join Date
    Sep 2006
    Location
    Videogames ruined my life. Good thing i have 2 extra lives.
    My Bikes
    Giant TCR2, Giant TCX, IRO BFSSFG SE, Salsa Casseroll, IRO Rob Roy.
    Posts
    3,190
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Having the brakes centered with the lever released isn't too big an issue. As long as the pads aren't rubbing on the rim you're fine.

    What you don't want to have is the brakes clamping the wheel unevenly which pushes the rim to one side or the other when you're squeezing the brake lever.

    Quote Originally Posted by jsharr View Post
    A girl once asked me to give her twelve inches and make it hurt. I had to make love to her 3 times and then punch her in the nose.

Posting Permissions

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