I've come across a problem with my rear disc brake making a rubbing sound, and i'm having some difficulty diagnosing the problem, so i thought i'd put out a question to the experts here on Farkin!
Basically, i went up over a curb on Wednesday last week, and without thinking didn't hop my backwheel up - i was carrying a bit of speed which led to my rear tube rupturing (silly i know - I've learned my lesson!).
A problem arose when i replaced the tube and reaffixed the rear wheel. Now, i can hear a rubbing which i believe is the disc on the pads. When spinning the wheel slowly (bike upside down for a quick service), i can hear a slight rub on one section of the disc/wheel, followed by a more noticeable one a short part of the spin later. What's got me stumped however is that i've visually inspected the disc, and can't notice any bend at all - i've got good eyesite (
) so it's really starting to bug me. The rear brake still stops fine, and the disc appears fairly clean (although i'm going to grab some metho this afternoon for a proper clean). I've also run a thin cloth through the caliper/pads in case there's anything major clogged up there, to no avail.
I'm 85% sure that the noise is coming from the disc/caliper/pads, but i'm not sure whether there's any chance it could be the hub? I'm riding a Giant Alias 09, with stock Shimano M486 hydraulics and rotors.
Has anyone got any idea how i might find out the actual issue, or steps that i could take to eliminate others? It doesn't seem to affect braking at all, so it's not a critical issue, but the sound is annoying me!!
Thanks in advance..
Basically, i went up over a curb on Wednesday last week, and without thinking didn't hop my backwheel up - i was carrying a bit of speed which led to my rear tube rupturing (silly i know - I've learned my lesson!).
A problem arose when i replaced the tube and reaffixed the rear wheel. Now, i can hear a rubbing which i believe is the disc on the pads. When spinning the wheel slowly (bike upside down for a quick service), i can hear a slight rub on one section of the disc/wheel, followed by a more noticeable one a short part of the spin later. What's got me stumped however is that i've visually inspected the disc, and can't notice any bend at all - i've got good eyesite (
I'm 85% sure that the noise is coming from the disc/caliper/pads, but i'm not sure whether there's any chance it could be the hub? I'm riding a Giant Alias 09, with stock Shimano M486 hydraulics and rotors.
Has anyone got any idea how i might find out the actual issue, or steps that i could take to eliminate others? It doesn't seem to affect braking at all, so it's not a critical issue, but the sound is annoying me!!
Thanks in advance..