Mechanical disc brake noise (Tektro Novela)- Mtbr.com
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  1. #1
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    Mechanical disc brake noise (Tektro Novela)

    My rear disc brake has been making a noise when half-braking. It is not a rubbing noise it is like a grinding noise (kind of like the noise a car makes when it need new pads). I checked the brake pads and they are over 3mm thick, cleaned the pads and rotor with isopropyl alcohol and adjusted the brakes. The noise is still there, I notices the rear pads and rotor have circular lines all over them, while the front brake pads and rotor don't. Do any of you know what the problem might be? Thanks.

  2. #2
    EAT MORE GRIME
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    if they are silent when not braking, i say run it. probably needs some real world use is all

    grinding can be worn pads (not your situation)
    or pads and rotor not mated


    closeup pictures of offending assembly can help diagnose

  3. #3
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    I've been on these for 2 years now. you can spend a bunch of time chasing it down, get it adjusted and cleaned and stop it, then it will be back for some other reason. These brakes are loud and not so great especially if you do any descending. I'm looking to fit some deores this year

  4. #4
    Fat-tired Roadie
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    It's grit.

    Get over it. Even if you chase it down, next time you ride on a wet enough day to get more dirt into your caliper, it'll be back.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  5. #5
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    take your pads out and lightly sand them down under running water. dry them off and re-install. be careful not to touch the braking surface. a little noise is common and acceptable to me, so don't sweat it.

  6. #6
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    Quote Originally Posted by mack_turtle View Post
    take your pads out and lightly sand them down under running water. dry them off and re-install. be careful not to touch the braking surface. a little noise is common and acceptable to me, so don't sweat it.
    Thank you, what grit would you recommend? when you say not to touch the braking surface, you mean of the rotor right?

  7. #7
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    I mean on the pad and the rotor. don't touch them.

    medium grit works, or use whatever you have. you don't want to polish the surface with a fine grain, but you don't want to wear it right off with a coarse grain.

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