Front wheel wobble when disc brake applied

mattwarin
mattwarin Posts: 49
edited July 2014 in MTB workshop & tech
Hi,
When I pull on my front brake my bike judders, I've worked out that the disc can move a mm or so independent of the hub. i've tried taking it off, cleaning it, tightening it up, but this doesn't work. Any ideas?
thanks for your help,
Mountain bike - genesis altitude

Road bike - 80's steel saracen audax frame

Comments

  • mattwarin
    mattwarin Posts: 49
    they're shimano centre lock rotors, thanks again
    Mountain bike - genesis altitude

    Road bike - 80's steel saracen audax frame
  • The Rookie
    The Rookie Posts: 27,812
    The slight movement of the disc is normal and nothing to do with the judder (there is no force applied to move the disc forward relative to the hub, only backwards, whilst you are braking) it could be loose QR, fork bushes or play in the headset bearing.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • jimothy78
    jimothy78 Posts: 1,407
    ..or dodgy spoke tension

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