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  1. #1
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    fixing warped disk brakes

    Hey are there any suggestions for fixing warped disk breaks?
    Thanks!

  2. #2
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    http://www.utahmountainbiking.com/fix/diskrotortrue.htm
    -or-
    http://parktool.com/products/detail....14&item=DT%2D2

    Hope this helps...


    Also, I've used a crescent wrench with good results...

  3. #3
    ol' dusty lungs
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    crescent wrench and a beer.

  4. #4
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    Quote Originally Posted by ghsrocketman
    Hey are there any suggestions for fixing warped disk breaks?
    Thanks!
    How badly are the rotors warped?

  5. #5
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    Not too bad, maybe like 2mm sway as the rotors are rotating. I was thinking of taking them off and bending them in a vice.

    Thanks for the suggestions guy.

  6. #6
    I think I need to Upgrade
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    Quote Originally Posted by ghsrocketman
    Not too bad, maybe like 2mm sway as the rotors are rotating. I was thinking of taking them off and bending them in a vice.

    Thanks for the suggestions guy.

    That is quite a bit of warping, did you get them uber hot and quench them with water? or did you hit something with them?

    If what the others have sugested doesn't work you can try as a last resort take them off the hubs and lay them on something hard and flat and tap them true with a hammer.

  7. #7
    Seeeriously easy Livin
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    yea use a crassent wrench, and leave your wheel on, use the brake caliper like a truing stand. I doesnt take much to bend the rotor a few mm, so take your time, find one spot thats rubbing bend it a bit then check the same spot again.

  8. #8
    squish is good
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    Really guys? Just throw a pair of gloves on to keep your natural skin oils off the rotor and bend it with your hand. Don't even have to take it off, I use the brake pads to figure out where I need to bend the rotor. Flip the bike, lay down on the floor, and sight the rotor against the ceiling/sky/whatever. Adjust until it doesn't rub anymore, doesn't take more than a minute or two.
    Bike good, work bad.

  9. #9
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    nvrmind
    Last edited by dundundata; 06-08-2009 at 02:19 PM.

  10. #10
    squish is good
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    Quote Originally Posted by dundundata
    are you sure it's the rotor, is your wheel true? just make sure before you go bending things
    Unless his hub has suddenly warped (which is incredibly unlikely) the trueness of the wheel has nothing to do with a brake disc rub. If the hub is mis-aligned in the dropouts is a possible explanation but it wouldn't cause an on-off rub like a warped rotor.
    Bike good, work bad.

  11. #11
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    Quote Originally Posted by ghsrocketman
    disk breaks?
    Thanks!
    hydrolic disk breaks?

  12. #12
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    nvrmind
    Last edited by dundundata; 06-08-2009 at 02:19 PM.

  13. #13
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    Quote Originally Posted by dundundata
    If he is merely looking at the rotor as it spins (attached to the wheel), and the wheel was not true, the rotor would move out of wack along with the wheel. So I'm saying give the wheel a spin and check it out as a first step.
    No, like clutchman says, the rotor is attached to the hub, not the rim, so if the rim's out of true it will not affect the rotor unless the wheel isn't in the dropouts correctly in the first place which has nothing to do with the wheel being true or not.

    As to truing the rotor definitely leave it mounted and use the caliper as a truing guide, bending it back with a little wrench (or the specific tool Morningstar or Park sells) or with your gloved fingers, it's very easy. Putting it in a vise won't do it nor will trying to pound it flat with a hammer etc...
    "...the people get the government they deserve..."
    suum quique

  14. #14
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    ah crap, ok thanks...looks like i have a bent rotor as well then!

    i'll try to leave my bad advice to myself

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