Advertise on Bikeforums.net



User Tag List

Results 1 to 4 of 4
  1. #1
    Newbie
    Join Date
    Jun 2010
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Hydraulic Disc Brake Question

    I recently got a bike with hydraulic disc brakes (Shimano M455 Calipers). I notice when I squeeze down the levers and move the bike back a forth the pads actually move inside the calipers. I normally would not think of this as a big deal but I think it might be causing a noise every time I hit the brakes. Is this normal with hydraulic disc brakes? And if not could this noise be coming from something else? It is usually a tapping/ clicking sound as soon as the pads make contact with the rotor.

    Thanks for the help.

  2. #2
    Senior Member
    Join Date
    Sep 2004
    Location
    boston, ma
    Posts
    2,821
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    also check wheel bearings and headset

  3. #3
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Disc brake pads are not fixed to the piston/caliper like 'armature' pads. When applied - squeezed against the rotor - the pads are pushed against a retainer/keeper that keeps them from sliding out from under the piston. Movement is normal. Such movement is not the cause of noise. A clicking sound could be interference or an irregularity in the rotor.
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  4. #4
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by reptilezs View Post
    also check wheel bearings and headset
    Yes. And spokes. Disc brakes apply stresses to the wheel assembly and fork that rim brakes don't.
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

Posting Permissions

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