Brake Noise Standing Still Magura Julie BAT
06-14-14, 10:31 AM
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Brake Noise Standing Still Magura Julie BAT
Hi all,
I have a bit of a noise coming from the rear brake, it makes no noise whatsoever when moving it's only at a stand still when you hold the rear brake on tight and put some tension on to the pedal or if you try to push the bike forwards.
I have had everything apart and cleaned it all, the rotor has been off the wheel and cleaned and refitted everything, made sure there are no loose items.
I do not remember this happening on old alu kona frame, I have a carbon cube frame now.
My next move was going to fit some washers between the calliper and mount on the frame.
Anyone have any ideas please ???
I have a bit of a noise coming from the rear brake, it makes no noise whatsoever when moving it's only at a stand still when you hold the rear brake on tight and put some tension on to the pedal or if you try to push the bike forwards.
I have had everything apart and cleaned it all, the rotor has been off the wheel and cleaned and refitted everything, made sure there are no loose items.
I do not remember this happening on old alu kona frame, I have a carbon cube frame now.
My next move was going to fit some washers between the calliper and mount on the frame.
Anyone have any ideas please ???
06-14-14, 10:57 AM
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Since this is a noise under static load, it should be pretty easy to test by feel and eye.
My first guess is that the disc is a bit loose on the hub. Or there might be a loose caliper mount screw.
Have a friend apply the brake and duplicate the noise, while you watch and feel the various parts to find where the movement is.
Meanwhile, I wouldn't add washers, or make any other modifications until I knew the specific cause, then only make changes specific to addressing that.
My first guess is that the disc is a bit loose on the hub. Or there might be a loose caliper mount screw.
Have a friend apply the brake and duplicate the noise, while you watch and feel the various parts to find where the movement is.
Meanwhile, I wouldn't add washers, or make any other modifications until I knew the specific cause, then only make changes specific to addressing that.
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06-14-14, 11:03 AM
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Thats what I thought but I tightened the rotor bolts to begin with then took it off and cleaned behind it I have had the caliper off and torqued it up fully both bolts
06-14-14, 11:21 AM
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It could simply be puck movement within the calipers. Don't fix or change anything until you know what needs fixing or changing.
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“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
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06-14-14, 12:53 PM
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Well I had replace the pads anyway so thats why I took the chance to clean everything as it was apart, how do you resolve puck movement ??
06-14-14, 01:12 PM
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Then if you do, it might be that you didn't seat one properly, or a retaining clip is missing, or not installed correctly. In the auto world, some mechanics use light adhesives to make sure parts are attached to each other and move together to prevent disc brake squeal, but I don't know is folks do it for bikes.
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“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
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06-14-14, 01:15 PM
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There has to be some clearance between the shoes/pucks and the caliper housing to allow free movement with the light retracting forces that bike brakes have. Avid (and maybe others?) have a thin spring which helps both with shoe retraction and placement. I don't think the OP's Magura has this feature. Besides trying various shoes to find a set that fits tighter I don't think there's a solution. But it will be interesting to read replies from other's more informed then I am. Andy.
