Forum home Mountain biking forum MTB workshop & tech

disc rotors and glazing of pads

swod1swod1 Posts: 1,639
edited January 2016 in MTB workshop & tech
Any ideas what's the issue with my rear brake?

I fitted a new disc one of those uberbike floating rotors and put in some new pads (semi metallic) bedded the pads in fine but now after a week of use the pads seem to have glazed across the middle.

checked the position of pads to the disc and there is no rubbing and I don't drag my rear brake.

Has anyone come across this before is it because the rotor has loads of holes in it or something?

I have had issues with kelvar pads glazing over in the past but not organic/semi metal pads.

Interesting the front disc is just a cheap superstar with same material of pads and works great but this uses a different design and holes cut out of the metal.


  • rockmonkeyscrockmonkeysc Posts: 14,774
    Either something is set up wrong and they're dragging or you're dragging them more than you think.
    Dragging brakes is about the only way to glaze pads
    The resin melts which is what causes the glazing.
  • swod1swod1 Posts: 1,639
    Cheers for reply.

    I've spent some time today looking at it as I was cleaning the gears after the recent cold weather and it looks like either the wheel (it's quick release) hasn't been tight enough or over tight and been touching the pads.

    Reset the caliper position and rescued the pads wasn't too bad and try again.

    These discs look wider than shimano so maybe give less room to adjust.
Sign In or Register to comment.