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 () 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..