Whistling discs...
ChrisLS
Posts: 2,749
...forgive me this stupid question, but my mountain bike is the first bike I've owned with disc brakes, really like them...one small problem however, is the front disc seems to whistle...well somewhere between a squeak and a whistle...any suggestions or experience anyone?
Thanks in advance,
Chris
Thanks in advance,
Chris
...all the way...'til the wheels fall off and burn...
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Comments
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Does that happen all the time or just when you brake?
How long have you had the brakes, have they had enough time to be properly bedded in (could be as much as 40 hard stops)?
It could be worth stating what model brakes they are too. My last bike had a set of Juicy 5's on and they always seemed to make a "turkey warble" under braking.0 -
...they are Juicy 5's, and yes I get the warble when braking! The whistle is constant more or less. The bike has only done nearly 500miles......all the way...'til the wheels fall off and burn...0
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The warbling is due to the holes in the rotor as they pass the pads, they make that sound when the brake is applied.
As for the whistling....not heard of whistling brakes before, 'pinging' & 'tinging' noises yeah, whistling's a new one on me!
Are the rotors true & not catching on the pads at all?
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My Hayes disc brakes whistle! Some bizzare combo with the fork, when I get up to speed and the air flow increases it plays music!0
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do you mean the whistling as in when you push the bike etc then it makes a wierd noise ermm cant describe the noise but i think i know what you mean. i have had the same problem. make sure the discs are straight and if they are then the pistons in the calipers may not be returning properly. also if this is not the case then you can buy shims to straighten up the caliper to the disc.0
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It could be worth trying to realign the calliper, IIRC it was pretty easy with the juicy 5's.
Just undo the two main bolts that hold the calliper in place (enough so the calliper will move side to side), pump the brake lever a few times and hold it in while tightening the bolts.0 -
...thanks for the advice guys......all the way...'til the wheels fall off and burn...0
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My cross country bike is doing the same, I reckon this is due the there actually being nothing left on the pads but metal mind..0
