|
|
| *Vultures Knob>>>Cycling |
Why do my disc brakes squeak? |
Why do my disc brakes squeak? If it's not from microscopic rust or some contamination, it's usually because of harmonic vibrations caused by warp in the rotor or loose hardware/pads. If you can steady the bike and spin the wheel, watch closely where one side of the rotor comes near a pad....if you see variation, you can attempt to bend the rotor true again with a crescent wrench (gently) and it may help. If you don't feel comfortable with your skills here, take it to a shop - it's easy to screw up a rotor if you start bending in the wrong places or do it too much. Sometimes loose mounting hardware or pads that don't fit well in the caliper will cause shimmy and noise(loose pads are a manufacturing problem, nothin' you can do about it). Avid mechanicals seem to have this problem...I have some older sets that are great but my two newer ones click and shimmy because the pads have too much play in the caliper. If things look nice and true, then clean up the pads and rotor to see if that helps. Get some Ajax powder and 400grit wet-dry sandpaper, then scrub them a couple times with it. Use a block when you sand the disc pads...they're soft and very easy to concave. You want to keep them flat. Dry everything off and go burn in your brakes again. If it still squeaks after the break-in period, then you might consider trying a new rotor or one of a different style. (Note: if your pads are contaminated by oils, scrubbing them probably won't help...buy new ones and be sure to scrub the rotor before you intall the new pads.) usually because they need replaced. it's the nature of the brakes to squeak, especially when there is a little dirt or dush on them also a little moisture can cause noise that's one of the reasons I don't like disc brakes on my road bikes, but they are OK on my MTB Check you haven't got a squirrel trapped in them Any of the following: 1. Water on pads-this is going to happen from time to time 2. Cracked pads-replace pads 3. Pads rubbing against rotor-adjust caliper position or use shims. They have a mouse stuck in them. Is it loud or barely noticeable? If it's fairly quiet, you probably have some drag and need to either shim the caliper one way or the other or bend the rotor slightly (a little goes a long way!) If it screams like a banshee, it's probably wet. If it's been dry a few days, you probably have dirty/oily pads and rotors and will need to clean them with isopropyl alcohol. |
| Tags |
| Cycling Bike Race Bike Insurance Bike Repair Bicycle Shop Bike Tours |
Bike Categories--Copyright/IP Policy--Contact Webmaster |