My front disc wont work!!

speedysi
speedysi Posts: 6
edited July 2009 in MTB workshop & tech
A friend of mine kindly gave me a set of HAYES sole disc brakes. My loccal bike shop then told me if I bought the rotors from them they would fit the whole lot for free (nice). The rear is starting to bed in nicely, but the front just wont work. I then noticed that the disc is not centered. They said that the mounts in the fork are a little out!! Also I can pull the lever back to the bar. LBS reckons a bleed might help. There is no more caliper adjustment. Could you put some washers between the hub and disc to help the centering?
Sorry about the numpty questions!!
:?:

Comments

  • speedysi
    speedysi Posts: 6
    Oh and it squeals like a mad mouse aswell!!
  • supersonic
    supersonic Posts: 82,708
    If they are post mount calipers, which 99% are, you should be able to centre them on that. But be aware that the inner pad is adjustable. Sounds like they need a bleed, maybe new pads and setting up from scratch.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • ride_whenever
    ride_whenever Posts: 13,279
    The soles are a real pain due to being a single piston design (ie literally one piston rather than a pair) so as the pads wear you need to keep re-centering the pads.

    If the rotor cannot be centered then you need to either shim the rotor (hope make some good shims) or space the caliper across.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • speedysi
    speedysi Posts: 6
    I rekon a bleed (couldnt hurt) and shimming the rotor is the way forward. The pads are new. I git them for free so cant complain to much!! Another visit to LBS is in order.
    Thanks for your advice.
  • psymon
    psymon Posts: 1,562
    both sides of soles can be adjusted by allen key. spacing the disc out isnt a problem really. we have to to it to all the Whyte race 19s we sell (with a big spacer made specificaly by Hope) as the combo of pro2 hub , SID forks and Stroker brakes means that there isnt enough room to play with. and this is a £2k bike!
    FAST

    FASTER
  • supersonic
    supersonic Posts: 82,708
    Are you sure the hydraulic side can be allen key adjusted? I thought it was an open master cyclinder, single sided hydro brake caliper?
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • speedysi
    speedysi Posts: 6
    The calipers seem to be as far towards the hub as they will go (if that makes sense!). The rotor is almost touching the non piston side.
  • supersonic
    supersonic Posts: 82,708
    Is it a post mount or IS caliper?

    PS both sides are indeed allen key adjustable.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • speedysi
    speedysi Posts: 6
    Its post mount. LBS have put a shimano bracket on as the sole is for 160 and Ive put 180 on. Yeah discovered the allen bolts. The non piston side was wound right in ie very little pad visible.

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