Results 1 to 2 of 2

Thread: rotor ringing

  1. #1
    mtbr member
    Reputation:
    Join Date
    Sep 2010
    Posts
    377

    rotor ringing

    Hi when I get to higher speed I can hear the rotor ringing, it's the bigger rotor on the front. I hold the lever lightly it goes away. I don't think it's slowing me down, is it just normal for some brakes? Rotor slightly out of true? Mine is the Shimano M486.

    Is there is something I can do about it, pads look centered on each side
    I don't want to mess with the QR if that is the wrong approach/

  2. #2
    mtbr member
    Reputation:
    Join Date
    Jul 2003
    Posts
    6,713

    It can be...

    a slightly out of true rotor that is barely brushing a pad as it goes by. It may not be noticeable at all at lower speeds but sets up a ring at higher speeds. It is also not uncommon for some rotors to vibrate slightly in sympathy with the vibration set up by the knobs on the tires when moving fast on a hard packed trail surface. I've got a set up on my off road bike that will ring at about 20mph when on pavement. Doesn't do it slower, doesn't do it at higher speeds, and I've never had it do it in the dirt, just on pavement. Rotors true and the pads aren't making contact with the rotor. But this is a constant ring. If your's is intermittent it's likely contact with a pad.

    I'd check the true of the rotor first.

    Good Dirt
    "I do whatever my Rice Cripsies tell me to!"

Posting Permissions

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