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  1. #1
    Senior Member jjbod1's Avatar
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    Canti's sqeeking really loud, how can I fix them?

    My wife has a older Trek 800 that she uses for a path bike. The brakes are canti's. Both the front and back now squeal so loud when she hits her brakes it hurts our ears. I have tried to adjust them, clean the rims with rubbing alcohol, I don't know what else to do. From what i can see the pads have tons of life left in them, but maby I am wrong. Any other suggestions, before I take it to a shop?

  2. #2
    Surf Bum
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    If pad material is superhard or surface is glazed, I'd just change them for something like Koolstops. If there is any adjustability available, slightly toeing them in seems to help.

  3. #3
    aka Phil Jungels Wanderer's Avatar
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    Toe them in a nickels worth, if they are really loud.

  4. #4
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    ps (and w) make good suggestions. Since you come from an area where it rains, you might try the "salmon-colored" version of Kool-stops.

  5. #5
    Senior Member jjbod1's Avatar
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    Ill try that tomorrow. The bike is a 97 model, and I think the pads are original, that was one of the possible answers I was looking for, as to whether they go bad with age?

  6. #6
    Senior Member jjbod1's Avatar
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    This problem is driving me nuts, to the point where I am determined to figure it out. I just got done lightly sanding the rim's and the brake pads to make sure there was no build up or glazing. That did not work. I think I am going to buy at least one set of new pads, try them on the front and see if that fixes the problem.

  7. #7
    A treat for the freaks! MCODave's Avatar
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    I know this is counterintuitive, but have you checked the headset for looseness? I fixed the squeaky canti's on my cyclocross/touring bike with a good toe-in and headset adjustment.

    I would also just keep scuffing/de-glazing the pads rather than replacing. "Bike path" bikes rarely wear down their pads to the point where they need replacement.
    Last edited by MCODave; 09-13-09 at 03:14 PM.

  8. #8
    My bike's better than me! neil0502's Avatar
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    If trying all of the above doesn't affect the squeal, then you could have flex at the forks that can be fixed by a brake booster.

    I'd try all of the others -- including checking for headset play -- first, but keep this in mind. It has solved canti squeal issues where nothing else worked.

  9. #9
    Senior Member Johnny Nemo's Avatar
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    Don't ride with her anymore.....

    Or sand the pads usually helps. But if they're old, buy new ones. Lots of the compounds nowadays work much better and don't squeal.

  10. #10
    Subjectively Insane MilitantPotato's Avatar
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    12 to ??? year old (who knows how long they sat in a warehouse before being installed) brake pads would be rock hard, replace them and go from there. Wrap a rubberband around the front tip of the pads to set toe-in, you only need 1-2mm normally, if at all.
    Last edited by MilitantPotato; 09-17-09 at 04:48 AM.
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