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  1. #1
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    Disc brakes squealing when wet

    Hi,
    After I go through streams and get my hydraulic disc brakes wet, they start to squeal obnoxiously. Not disc brake squeaking here and there when I apply the brakes, but LOUD, uncontrolable squealing that seems like it could be heard from a mile down the trail when I apply my brakes hard.

    I'm just doing normal stream crossings, not abusing the bike or soaking it in water. The brakes seem to be very sensitive to being dirty or wet. I've switched the pads front to rear and cleaned and sanded the rotors and it doesn't help.

    Does anyone else have this problem, or know what could be the cause? Thanks!

  2. #2
    I'm on fire.
    Reputation: Trigger's Avatar
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    Give us the key bit of info - what brand/model of brakes do you have?

    My Juicy 7s has some squeelin' issues that I took care of with a different style rotor and made even better with non-avid pads.
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  3. #3
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    Non-avid pads

    Trigger,

    What brand of pads do you use? I ordered some Galfer pads and they did fit in the Avid brake housing (Juicy 5), but the "handle" portion of the pad was in a different spot and interfered with the bracket that holds the brake housing to my bike (hope that makes sense). I had to send them back.

    Just curious as to what other brands of pads have the handle portion in the same spot as Avid and will work on my bike (2005 Marin Rift Zone).

  4. #4
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    shimano deore hydraulic. how do I tell what kind/size rotors I have?

    I suspect my rear rotor may even have been defective from the time I got it, because my front brake never made the same squealing noise, not before or after I switched the pads and cleaned and sanded them.

    If I try to replace my rear rotor, any suggestions on what to replace it with?

  5. #5
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    Reputation: Jefe74's Avatar
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    Just an FYI, but almost all disks squeal when they get wet. It is not something I would get too worked up about.

    Did a big group ride early in the season that had a bunch of snow on the trail. It was hilarious to listen to 17 bikes (34 brakes!) squealing when the trail turned down hill.

  6. #6
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
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    Quote Originally Posted by Jefe74
    Just an FYI, but almost all disks squeal when they get wet. It is not something I would get too worked up about.

    Did a big group ride early in the season that had a bunch of snow on the trail. It was hilarious to listen to 17 bikes (34 brakes!) squealing when the trail turned down hill.
    Yup, and sometimes they stay quiet. Totally normal for my brakes to howl on occasion. Can never be sure when or if it will happen. Comes and goes during the ride.
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  7. #7
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    thanks!

  8. #8
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    Used to have the older XTs and Hayes Mags, they never squeeled. Now have Juicy 5s and those suckers squeel like crazy when humid or dirt falls inside the caliper.

    Any recomendations?

  9. #9
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    All discs squeal

    As has been said all discs squeal, it just depends on how much and for how long. My Hope Mono Mini's will start to squeal when I get near the east coast where salt spray is thick, but once I give it a couple taps the squealing stops. Same thing when going through water, a few pumps on them and the quiet right up, guess you just need to evaporate the water/heat the rotors to stop the squeaking

    As to your brakes being "bad" from the get go, I more than think that it's your frame if anythig that's "bad". More than likely your disc tabs were faced and are not square and hence cause the squealing cause the rotor is running at an angle to the actual calipers.

    Quote Originally Posted by kawarider
    shimano deore hydraulic. how do I tell what kind/size rotors I have?

    I suspect my rear rotor may even have been defective from the time I got it, because my front brake never made the same squealing noise, not before or after I switched the pads and cleaned and sanded them.

    If I try to replace my rear rotor, any suggestions on what to replace it with?
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  10. #10
    Meh.
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    Try different pads. The stock Avid compound is pretty hard.

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