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Popping noise from front disc brake?

Old 02-20-18, 12:30 AM
  #1  
her0n
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Popping noise from front disc brake?

My front disc brake is being weird right now. If the front wheel gets dropped or bounces a little, and I press the front brake lever, it will make a popping/cracking noise. I think it might be something about how my calipers are fastened, but Iím not sure.
Please help!
Thanks
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Old 02-20-18, 04:36 AM
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xenologer
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go to a repair shop and get some in-person help

asking here isn't going to go anywhere because:
-we can't see what's going on
-you lack the bike technical knowledge to communicate the problem in any useful way to us
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Old 02-20-18, 09:27 AM
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Skipjacks
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Mine did that. It turned out the rotor was SLIGHTLY not quite flat from the factory. It would happen on hard breaking. I'd get a real bumpy stop.

Wasn't noticeable visually. Barely registered on a micrometer. Only found it because the service tech had previously noticed a part recall for a specific rotor from the brake manufacturer that hadn't even been communicated to the bike manufacturer yet. And it only affected a small handful of rotors so it was a really obscure problem.

The point is....see the post above. Take it to a shop.

You aren't going to diagnose and fix this yourself.

Heck, I was dumb lucky that the tech at my shop had heard about the recall. It wasn't something I would have EVER heard about, or guessed to fix.
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Old 02-20-18, 09:54 AM
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What kind of axle do you have, regular q/r?


When the bike industry in their infinite wisdom decided to put the caliper on the rear of the fork, they arranged so that braking forces will push the axle DOWN, while riding forces pushes the axle UP.
If your q/r isn't done up real tight, riding and braking can shunt the axle up & down in the dropout.
So check your q/r.
If it's an external cam, replace with internal cam.
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Old 02-20-18, 05:39 PM
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her0n
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My q/r is tight as can be, almost too much to the point where it would strip. I’m taking it into the shop today, as I have no clue about how to explain my problem. Visually, looks perfect. Thanks for the help.
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