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  1. #1
    Rider lohump's Avatar
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    Carbon Brake Pads on Aluminum Rims

    What are the consequences of using Shimano Dura Ace brake pads designed for carbon rims on aluminum rims? Got a great bike on Ebay that was shipped like that....

  2. #2
    cab horn
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    The braking sucks
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  3. #3
    Call me The Breeze I_bRAD's Avatar
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    better than ceramic on al though

  4. #4
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    Braking will be very bad and the pads will be damaging to the rims. Get the correct pads. Either Shimano's correct composition pads or Kool Stop "Dura" pads will fit your pad holders.

  5. #5
    Great State of Varmint Panthers007's Avatar
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    Yup ^^^. Get the right pads for the job. Your wheels will thank you.
    How do you keep an idiot in suspense?

  6. #6
    Senior Member Sci-Fi's Avatar
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    Quote Originally Posted by HillRider View Post
    Braking will be very bad and the pads will be damaging to the rims. Get the correct pads. Either Shimano's correct composition pads or Kool Stop "Dura" pads will fit your pad holders.
    Why would brake pads for carbon rims be bad/damaging for aluminum rims? Most are cork formulations/compounds. Might be confusing them up with ceramic brake pads.

    As far as braking performance, cork pads are generally not recommended for aluminum rims (the exception is Swisstop yellow pads, which according to Swisstop, can be used for both w/o any difference in braking performance and there are plenty of triathletes that use their yellow pads for double duty for their carbon race and aluminum training wheels/rims).

  7. #7
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    Quote Originally Posted by Sci-Fi View Post
    Why would brake pads for carbon rims be bad/damaging for aluminum rims? Most are cork formulations/compounds. Might be confusing them up with ceramic brake pads.
    Right, I was.

    Quote Originally Posted by Sci-Fi View Post
    As far as braking performance, cork pads are generally not recommended for aluminum rims (the exception is Swisstop yellow pads, which according to Swisstop, can be used for both w/o any difference in braking performance and there are plenty of triathletes that use their yellow pads for double duty for their carbon race and aluminum training wheels/rims).
    As you note, most cork (carbon specific) pads aren't recommended for Al rims, probably due to substandard braking.

    The Swisstop Yellow pads are so expensive that replacing whatever is installed on the OP's brakes with either Shimano or Kool Stop pads will be much less expensive. Unless the Swisstops are what's there now but that's unlikely.

  8. #8
    cab horn
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    Swisstop is idiotically expensive.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  9. #9
    me have long head tube TallRider's Avatar
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    I doubt that carbon-specific pads would hurt aluminum rims; the damage is more likely to be to the pads, or perhaps to the rider because of substandard braking

  10. #10
    Newbie
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    The pads will damage. And eventually crumble. Happened here.

    t

  11. #11
    Senior Member JerrySTL's Avatar
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    Let's see. Swap out the cheaper AL training wheels but use pads for CF. Have substandard braking. Maybe even pick up some AL grit off the wheels.

    Put fancy, expensive CF wheels back on. The pads are now badly worn and may even have some AL grit in them to grind up against the CF wheels.

  12. #12
    coprolite fietsbob's Avatar
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    pad inserts are cheap, change them.

  13. #13
    Senior Member woodcraft's Avatar
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    Quote Originally Posted by tydstaples View Post
    The pads will damage. And eventually crumble. Happened here.

    t

    What pads? How long? What conditions?

    Thanks.

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    If the carbon pads have already been used on carbon wheels. They will leave black residue on the aluminium rims. Braking performance will also feel crap. You have to scrub and clean the rims thoroughly otherwise when switching back you will contaminate the aluminium pads. Believe me how do i know this ? because i got lazy and tried it and i wont be doing it again.

  15. #15
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    New pads might work but there are better rubber compounds for aluminium.
    Last edited by trailflow1; 06-11-15 at 11:13 AM.

  16. #16
    coprolite fietsbob's Avatar
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    What pads? How long? What conditions?
    For Me where I live I Use Kool Stop Pads on my aluminum rim Bikes , Salmon red compound, because it Rains Here .

    As to How long , the Dura Ace style pad holders each have a set screw,

    so it only takes maybe 2 minutes per pad to remove that screw slip in a New Pad ..

    Perhaps a bit longer if i Drop the little screw and have to find it on the floor.

  17. #17
    Senior Member woodcraft's Avatar
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    Quote Originally Posted by fietsbob View Post
    For Me where I live I Use Kool Stop Pads on my aluminum rim Bikes , Salmon red compound, because it Rains Here .

    As to How long , the Dura Ace style pad holders each have a set screw,

    so it only takes maybe 2 minutes per pad to remove that screw slip in a New Pad ..

    Perhaps a bit longer if i Drop the little screw and have to find it on the floor.

    Actually wanted to know what pads tydstaples was using that crumbled

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