Rubbing disc brake

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roverthehill
Posts: 125
Joined: Sat Nov 19, 2011 19:48 pm

Rubbing disc brake

Postby roverthehill » Wed Dec 12, 2012 20:43 pm

Okay, hopefully I can explain this properly....

I noticed that the rear disc was rubbing on something. So I popped the pads out and had a look at them - they are fine. I then spun the wheel and noticed that the disc is still rubbing. The disc is rubbing against the rear mount (not sure of the technical name of it). ie with the pads removed, the disc rubs against the mount were it's narrower - formula rx brakes.

I found this picture online which might help explain:
http://www.bikeradar.com/gear/category/ ... s-12-35528

the disc is rubbing against the inner edge of the white 'pocket' just below the pads on the bottom right of the photo.

So how do I readjust the set-up so the disc is central and not rubbing? I see there are a few screws on the mount but I don't want to mess about until I get some advice!!

Thanks in advance

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supersonic
Lives Here
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Joined: Fri Nov 25, 2005 11:50 am

Re: Rubbing disc brake

Postby supersonic » Wed Dec 12, 2012 20:46 pm

What is the hub, rotor (and size) and frame?

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The Rookie
Posts: 23042
Joined: Thu Apr 30, 2009 09:29 am

Re: Rubbing disc brake

Postby The Rookie » Thu Dec 13, 2012 11:47 am

So is it rubbing the frame, the adaptor between that and the caliper or the brake caliper (the white bit you stick the pads in).

If, as it sounds, its the caliper, you need to recentre it, refit the pads after pushing both pistons back, loosen the 2 bolts mounting the caliper to the adaptor so it's free to move sideways, pull the lever and then holding it pulled do up the mounting bolts a bit at a time...

roverthehill
Posts: 125
Joined: Sat Nov 19, 2011 19:48 pm

Re: Rubbing disc brake

Postby roverthehill » Thu Dec 13, 2012 19:59 pm

cheers the beginner.

That has more or less done the trick. There is still a very minor rub against the pad this time but the wheel so infinitely more free than before! Before, when I spun the wheel it would only go round 4-5 times!
Maybe when I take it for a spin the rubbing on the pad will disapear. otherwise, I'll try resetting again.

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The Rookie
Posts: 23042
Joined: Thu Apr 30, 2009 09:29 am

Re: Rubbing disc brake

Postby The Rookie » Thu Dec 13, 2012 21:39 pm

If it's been run poorly centered it's possible the pads are worn off square and need to bed back in again.


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