Rear Brakes Catching when at Speed

quinnc22

I have a problem with my MTB rear disk brakes I think.

When decending once I get up to any sort of decent speed it sounds like something is rubbing near the rear wheel.

I think it is probably the rear brakes because they get quite hot and there is nothing else that seems to come in contact with the rear wheel.

I have adjusted the brakes a good few times and the pads come nowhere near the rotor.

Any ideas?

CianRyan

Does the wheel sit right?
The tyre on my old MTB use to rub the seat stay like mad until I sorted it.

My wheel had a slight buckle and just needed to be trued.

quinnc22

Yeh wheel is true and doesn't come close enough to any part of the frame to rub

manwithaplan

Sometimes a wheel can be true but there could be some play at the hub causing it to rub when pressure is put on. Grab the wheel at the rim and try to move it laterally. If there's significant movement, you might have hub problems. No point in going into what they might be at this stage but check it in any case.

cdaly_

^^^^ What he said. Or freehub problems. And this sort of problem may only show up when free-wheeling at speed (ie. descending).

quinnc22

Thanks for the replies, I'll take a look at it tonight after work