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  1. #1
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    Brake rotor bend when brakes applied.

    I'm building a bike with a Marcozzi Bomber fork and disk brakes. I'm having a problem aligning the disk to the caliper. With everything bolted on and aligned, when you apply the front brake you can see the rotor bend in. The brake is also dragging on the side opposite of the adjuster.

    Help?!?!

  2. #2
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    What brakes are you using?

  3. #3
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    make sure the inboard pad or the fixed side of the pad is set as close to the rotor as you can without rubbing

  4. #4
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    I have it set as close as I can get it. It's the non fixed side that pushes the rotor over everything.
    Can I adjust the out board pad further out away from the rotor?

  5. #5
    rebmem rbtm
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    If you have a mechanical disc brake then it's normal for the outer moving pad to push the rotor towards the inner fixed pad when you apply the brake.

    * The inner fixed pad doesn't move when you apply the brake.
    * You need a gap between the inner fixed pad and the rotor so it doesn't rub when you're not using the brake.
    * When you use the brake, the outer moving pad needs to push the rotor against the inner fixed pad for the brake to work.

  6. #6
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    Really? Wow, OK. That just seems like it would warp the rotor after a while. Thanks!

  7. #7
    rebmem rbtm
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    The truer a rotor is the closer the inner pad can be to it and the less it will have to bend.
    As the inner pad wears you have to keep it adjusted so it stays close to the rotor.
    If you don't adjust the inner pad as it wears the rotor will have to bend even more to to touch it.

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