New brake juddering

Discussion in 'Bicycle Mechanics and Repairs' started by dave147, 8 Feb 2018.

  1. dave147

    dave147 Active Member

    just been out on my bike with the new wheels and brakes had a judder /vibrations when braking what have I done wrong
     
  2. fossala

    fossala Über Member

    Location:
    Cornwall
    What type of brakes are they, cantilever?
     
  3. OP
    OP
    dave147

    dave147 Active Member

    0AE6FE65-8135-4F40-9FA9-3EC9ABA055E2.jpeg Ultegra cud it be the new pad on the new rim it did go of a bit but first couple of brakes was a big vibrarion
     
  4. bikingdad90

    bikingdad90 Formerly chris harte

    Brake cable looks too short to me.

    Is it torqued up right at the bolt?
     
  5. fossala

    fossala Über Member

    Location:
    Cornwall
    First thing I would check is that all bolts are tightened to the recommended amount. I would then make sure there is no play in the headset. Then if it is still present I would toe in the brake pads a little bit.
     
  6. screenman

    screenman Legendary Member

    Did you clean the protective coating off of the wheels, I use brake cleaner.
     
    raleighnut likes this.
  7. Tangoup51

    Tangoup51 Well-Known Member

    Make sure there is no headset play
    Brake caliper bolt is tightened properly
    No bearing play in front wheel
    QR skewers tightened correctly
    Fork sitting correctly on skewer
    Make sure rim is true
    Make sure pads are tightened
     
  8. Drago

    Drago Guru

    Location:
    Poshamptonshire.
    Is the toe in on the brake blocks set correctly?
     
    Alan O, ADarkDraconis and screenman like this.
  9. raleighnut

    raleighnut Guru

    Location:
    On 3 Wheels
    As @screenman says clean the protective coating off the rim, mind you I use 'Fairy Liquid' and a scouring pad especially with tyres fitted.
     
  10. OP
    OP
    dave147

    dave147 Active Member

    Every thing tight didn’t clean rims as I didn’t know to. Also this toe in business how much shud it be. Gona hit YouTube up and have a look on there
     
  11. mrandmrspoves

    mrandmrspoves Middle aged bald git.

    Location:
    Narfuk
    Toe in is set so the leading edge of the brake pad hits the rim first.
    I use a thin piece of card from a cereal packet folded in half. Loosen the retaining nut for the brake pad and then trap the card between the wheel rim and the rear end of the brake pad. Adjust the position of the pad so it meets the rim correctly, then squeeze the brake lever tightly so it compresses the card against the rim while you tighten the retaining nut again. This will give you appx 2mm toe in and can help prevent squealing and shuddering. Repeat on the other 3 brake blocks.
     
    burntoutbanger likes this.
  12. OP
    OP
    dave147

    dave147 Active Member

    I’ll give that a go thanks so much
     
  13. OP
    OP
    dave147

    dave147 Active Member

    Was thinking it was just new pads breaking in
     
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