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I've replace the discs and the pads withing the last 2-3 months and they make an un nerving grinding noise. I've checked my setup but can't isolate the issue. There are no gouges or anything in the discs. I'm baffled.

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Crockpot2001 said:
I've replace the discs and the pads withing the last 2-3 months and they make an un nerving grinding noise. I've checked my setup but can't isolate the issue. There are no gouges or anything in the discs. I'm baffled.

Cheers
I had a similar problem a couple of months ago and the culprit turned out to be the spring. Don't know what happened, but one of the fingers had bent and was rubbing on the disc.
 

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Is/Are the caliper(s) loose? I had a grinding noise occure and it took me almost a week to discover one of the caliper mounting bolts was ever so slightly loose and it let it rub justa little on the rotor. I too couldn't find any marks or wear indicating where the problem was. I've also had the caliper body rub ever so slightly on the rotor because of switching wheel sets and had to shim the mounting bolts to bring it farther to the side of the rotor. Might double check?
 

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My vote goes to the rotor hitting the caliper on the inboard side

when you squeeze your lever. If the inboard pad is adjusted real close to the caliper, the rotor gets pushed over and can hit it. Readjust your caliper so that the inboard pad can be dialed out away from the caliper and see what happens.
 

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Bike Junkie
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CPS washer

I had the same with my front rotor, the arms were slowly shaving away the CPS washer and a little of bolt on the inside. It's super close!
 

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ballbuster
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I have a bud...

Crockpot2001 said:
I've replace the discs and the pads withing the last 2-3 months and they make an un nerving grinding noise. I've checked my setup but can't isolate the issue. There are no gouges or anything in the discs. I'm baffled.

Cheers
who had a frame with the disc tabs slightly off. The caliper actually was rubbing the top edge of the rotor. It took us a while to figure out what was going on. On a ride, we took the washers off his water bottle cage, and put them under the CPS washers to space the caliper slightly more away from the rotor. Problem solved!
 
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