Squeaky rim brakes?

Nazca · 6 Jul 2015 at 12:11

My rear rim brakes have suddenly started squealing really loudly, on the road, coming to a stop.

I've cleaned the rim and brake pads and it still makes a racket.

I've taken it to a LBS. Cannot replicate the squeal inside it seems.

It's not a constant squeal - every time I brake the squeak comes and goes.

Any suggestions?

Thanks!

neil_g · 6 Jul 2015 at 12:14

toe the pads in slightly, usually helps.

Nazca · 6 Jul 2015 at 14:12

Sorry for my ignorance, but how does one do this?

topgun06 · 6 Jul 2015 at 14:18

Pad Toeing

This is the setting of pad angle as it touches the rim. Toeing refers to setting the pad so the pad's front edge strikes first, which tends to reduce squeal during braking. Caliper arms tend to have play in the pivots and the arms flex when the brake is applied. This may cause squealing in the brake pads. It is simplest to first ride the bike and see if the brakes squeal.

http://www.parktool.com/blog/repair-help/linear-pull-brake-service-v-brake-type

James07 · 6 Jul 2015 at 15:20

Mine do that every now and then, usually when braking hard down the steepest hills. Im not worrying about mine, if its happening when ever you brake then do the above.

Nazca · 7 Jul 2015 at 15:24

Didn't solve the problem

Colleague suggested the wheel may not be "trued". The bike is 2 weeks old, is it unusual for the wheels not to be aligned at such an early stage?

neil_g · 7 Jul 2015 at 15:35

depends if they rubbish wheels and/or youve been smashing them into the ground

spin them, do they wobble?

James07 · 7 Jul 2015 at 15:35

Nazca said:
Didn't solve the problem

Colleague suggested the wheel may not be "trued". The bike is 2 weeks old, is it unusual for the wheels not to be aligned at such an early stage?

It could be that but i doubt it, after two weeks the wheels could be out but that would be if youve abused them, can be wrecked in a day if youre not careful.

Do you have cheapo pads on the bike?

Nazca · 7 Jul 2015 at 16:26

James07 said:
It could be that but i doubt it, after two weeks the wheels could be out but that would be if youve abused them, can be wrecked in a day if youre not careful.

Do you have cheapo pads on the bike?

I've got Shimano 105 callipers. Not sure about the pads. I assume they came with the group set

James07 · 7 Jul 2015 at 16:53

What bike is it?

Have a look at this link

James07 · 10 Jul 2015 at 16:08

I take it they failed completely? xD