Adjusting brake pads to not go under the rim

BDFun
BDFun Posts: 67
edited April 2012 in Workshop
Hi all,

I got my bike (Trek 1.2) back from a LBS workshop, and as part of the service I had the wheels replaced Fulcrum Racing 7. Since getting it back, I noticed the brake pads on the front and rear are slightly under the wheel rim, meaning that as the pads wear, they will rub against the wheel.

To remedy this, I should move the brake pads up/down the calliper arms so they sit squarely in the middle of the brake rim when applied. However, on the front and back, they already go as far as they can, so I can't see what else I can do. Picture of the front brake calliper:
rk2847.jpg

I will be taking it back to the LBS workshop, as there is a defect with the wheel they have sold me, but I want to know out of curiosity how I would fix this problem.
Thanks in advance

Comments

  • desweller
    desweller Posts: 5,175
    There's no caliper in that photo...
    - - - - - - - - - -
    On Strava.{/url}
  • DesWeller wrote:
    There's no caliper in that photo...

    thats beacuse for sime reason the forum uses fixed width and lops photos in half if they are too big.

    bit silly really, monitors have grown in size and the forum should be auto sizing in this day and age.
  • BDFun
    BDFun Posts: 67
    Sorry all, I managed to post the wrong photo which didn't include any callipers! Updated original post.
  • desweller
    desweller Posts: 5,175
    DesWeller wrote:
    There's no caliper in that photo...

    thats beacuse for sime reason the forum uses fixed width and lops photos in half if they are too big.

    bit silly really, monitors have grown in size and the forum should be auto sizing in this day and age.

    I copied the link for the photo and viewed it separately, smart-arse ;-).
    - - - - - - - - - -
    On Strava.{/url}
  • desweller
    desweller Posts: 5,175
    Err, anyway, back to the original topic; if the caliper isn't loose or something like that then I wouldn't have thought there's much you can do. Are they long drop calipers by any chance?
    - - - - - - - - - -
    On Strava.{/url}
  • BDFun
    BDFun Posts: 67
    DesWeller wrote:
    Err, anyway, back to the original topic; if the caliper isn't loose or something like that then I wouldn't have thought there's much you can do. Are they long drop calipers by any chance?

    I thought that was the case.

    I'm not sure if they are long drop callipers or not. I did a quick measure of the front brake calliper and that has between 45mm to 55mm reach, but it needs a bit less than the minimum. The rear brake calliper is longer, but not long enough.
  • desweller
    desweller Posts: 5,175
    Intriguing. So the back caliper is too short and the front too long? Have you tried swapping them? AFAIK the only difference between front and rear is the length of the nut securing them to the fork and the frame brake bridge.
    - - - - - - - - - -
    On Strava.{/url}
  • k-dog
    k-dog Posts: 1,652
    Are the wheels in the dropout properly? The brake track shouldn't move too much between different wheels.
    I'm left handed, if that matters.
  • BDFun
    BDFun Posts: 67
    DesWeller wrote:
    Intriguing. So the back caliper is too short and the front too long? Have you tried swapping them? AFAIK the only difference between front and rear is the length of the nut securing them to the fork and the frame brake bridge.

    As strange as it sounds, the long calliper (back brake) is not long enough, and the short calliper (front brake) is not short enough.
    k-dog wrote:
    Are the wheels in the dropout properly? The brake track shouldn't move too much between different wheels.

    I did check this, and the wheels are seated in the drop out correctly.

    I'll give the LBS a ring tomorrow to see what they can suggest as I need to replace the front wheel they supplied me as it has existing damage on it. I'm surprised they didn't spot the issue before me...
  • crankycrank
    crankycrank Posts: 1,830
    I'm thinking maybe the block carriers are on the wrong side, i.e. upside down. Try switching L to R and R to L.