Please help!

[zmtber]

both my front and rear brake sound like finger nails on a chalk board really bad to the point in wich my whole bike rattles i have gotten new bads and my brakes have all been looked at by the local bike mechanics but nothing. has this happened to you and how would you fix it, thank you

[SXtrailrider]

buy some cleaning stuff and spray the disk down wit hit see if that helps

[zmtber]

thanks adam you can just tell me tommorow at school plus i know more about bike than you do

[binary visions]

Two suggestions:

First of all, try re-aligning everything. Be meticulous about it, too, don't just slap it together. Pull the brakes off, grease your bolts, and very carefully re-install them. That sometimes solves squealing.

The second suggestion is to get your brake mounts faced - not all shops will have a tool for it, though. That's often a cause of brake squeal.

You didn't tell us what kind of brakes you're running, though! Also, have they always been like this or did something change recently?

[OGRipper]

Yeah we need more information. Take a few more minutes, help us help you. We don't even know if you have discs or v-brakes.

[zmtber]

they have always been like that but they have gotten worse and they are hayes 9 mag

[zmtber]

they are 8 inch rotors if it matters

[zmtber]

i have tried to raline them and they don't touch the pads when they spin free but the sound ony is when i us my brakes amnly on downill decent

[zmtber]

*is only.... and .....manly...... sory typo

[Biscuit]

*is only.... and .....manly...... sory typo
manly? are you sure?

That's the first time I've seen someone correct a typo with a typo.

[zmtber]

sry catn't speal, so can you help me

[Biscuit]

No. I find it much easier to stand back and point out flaws than to come up with ways to correct them.

[binary visions]

Like I said, if you're careful about your re-installation, and it still happens, it's probably a frame issue and you need to get your brake mounts faced.

[DH SB RIDER]

im a better biker then u zac....bigger air and bigger drops

[SBDHrida]

definitely face the brake mounts as binary visions has suggested. If that doesn't solve it, here are two somewhat simple suggestions that could help: First, try simply throwing dirt into the rotors and pads and then riding around with the brakes on for a while (sounds silly but its a suggestion strait from Avid for a similar problem). also, try removing the pads and scoring a criss cross pattern on them with a sharp razor blade.

[Bicyclist]

im a better biker then u zac....bigger air and bigger drops

Dude ur like totly xt-reme nda u r os gud at ridn bike.