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  • Brakes making weird noise…

     BFG71 updated 11 years, 4 months ago 7 Members · 9 Posts
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  • Dangra

    Member
    26 November 2009 at 7:41 pm

    Right lads, since my last ride yesterday my rear disc under light to medium braking makes a wierd groaning noise, and I can feel a bit of feedback in the frame when it happens. Sounds daft, but its kinda like the noise a ship makes when it sounds its foghorn (weird analogy I know). This doesn’t happen when I apply the brake fully, as in completely slamming the anchors on to lock the wheel up.

    Any thoughts? Advice appreciated.

  • Gunner

    Member
    26 November 2009 at 7:54 pm

    Generally the noise is simply a vibration that can be more felt than heard coming from the disc pads because on slower stops you don’t have the brakes applied fully which allows them to vibrate against the rotor surface.

    As I said………Generally……. 😉

  • miggeth

    Member
    27 November 2009 at 9:44 am

    Remove the pads and lightly sand the surface with some fine sandpaper until it’s very smooth. If the pads have been contaminated you could also try baking them in the oven for 20 mins.

    Sanding them usually works for me.

  • BFG71

    Member
    21 December 2009 at 12:18 am

    Remove the pads and lightly sand the surface with some fine sandpaper until it’s very smooth. If the pads have been contaminated you could also try baking them in the oven for 20 mins.

    Sanding them usually works for me.

    What would baking them achieve? I am guessing it would harden thepads?

  • Steve Kish

    Member
    21 December 2009 at 9:09 pm

    Also, check the tightness of the rotor bolts – mine loosened off a while ago and made a weird low frequency noise.

  • Rob

    Member
    22 December 2009 at 8:55 am

    BFG71 – Baking the pads is an attempt to remove or burn / boil out any contaminants that may have been absorbed by the brake pad material, such as oil, grease or cleaning products etc. This is an old motorcycling trick and can be very successful but has been known to affect the bond between friction material and the steel backing plate. Obviously this is not a good thing when braking, to see parts of your brakes flying past you as they fire out of the calliper as you attempt to slow down, (personal experience). 😯

    As said can work well but be careful.

  • kaya

    Member
    24 December 2009 at 10:45 pm

    Don’t use them 😆 Sorry I will get my coat 🙄

  • Gunner

    Member
    25 December 2009 at 10:46 am

    Don’t use them 😆

    😆 😆 😆 😆

  • BFG71

    Member
    28 December 2009 at 11:53 pm

    hey rob thanks for explaining!

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