Triumphrat

GatorBait

I just had new Avons mounted and replaced the brake pads (front & rear) while I had the wheels off.

Now, when moving, I can hear a "buzzing" from the front brakes, which increases slightly in volume when the brake is applied.

The rear brake doesn't do this at all.

Any ideas on what I should look at or tips?

KD5QOQ

If it's kind of a "whizzing" sound that's normal.
I think it's caused by the cooling slots/holes in the rotor.

__________________
Jimbo
Kroger Plus Member
99 Adventurer(cafe'd), 06 SV1000S
05YZ450F
89 CR500

GatorBait

Except my Legend rotors don't have holes in it ... it's a solid disk. And, I didn't notice this BEFORE I changed the pads.

I'm thinking it's something in the pads vibrating or the clips are misaligned. I'll just have to remove the caliper and look around in how the pads are mounted and make sure nothing slipped out of place when I swapped out the pads.

Cuppa500

Al the ones I've ever seen have drilled discs. Have yours been changed?

Cuppa

coppi0_3

It´s the same noise in the front disk of my 2000 Legend. It started when I put the rear pads in the front caliper because they were thicker. Then i thought these pads could have the specific shape for the rear caliper, so I changed the pads again, this time a new set for the front and cleaned both calipers. I mounted carefully clips and everything but the sound remains. I don´t think the disk is out of true but I´m not sure. i´ll be grateful if someone knows how to solve this. Thank you.

GatorBait

You are right - the Legend DOES have drilled rotors! I must have been thinking of a different bike ....


[ This message was edited by: GatorBait on 2007-03-27 08:33 ]

parrycm

I've changed pads on both front and rear, and never heard a buzzing sound either before or after. It's difficult to imagine what could cause it, given it's a pretty simple set up. I've always used OEM pads - I don't know if that is a factor or not.

All I can suggest is raising the wheel and spinning it and have an assistant operate the brake. See if you can identify any looseness or resonance.

__________________
Chris

"Panniers can never hold everything you want, but they CAN hold everything you need."

Thunderbum

Mine buzzed with new pads, louder when braking, too. I fixed it with louder mufflers. Now, no buzz.

GatorBait

HAH!! That would solve the problem! ;-)

Like using the radio as a "rattle remover" in a car! (just turn up the volume)

[ This message was edited by: GatorBait on 2007-03-28 21:37 ]

Thunderbum

Actually, the cause is most likely the new pads you fitted. The front calipers on our bikes have the pistons on one side and not the other. The caliper is supposed to relax a little when you release the brakes, but nothing forces the calipers to do so. As a result, as the calipers collect road grime, they tend to stick a bit, and hold the inner pad ever so gently against the disc. The drilled holes in the disc provide the buzz. The resulting pad wear is minimal, nothing to worry about. As the pads break in, they provide more space for the calipers to relax, and the buzz should go away gradually. Also, the surface of the pads becomes more smooth as the surface is worn away, so the buzz you get while braking should diminish with time as well. This might be why you didn't notice it before.
A relatively easy check for any problems is to lift the front wheel off the ground with a center stand or maybe a bottle jack and spin the front wheel by hand. if the wheel spins for a while after you stop pushing, you have nothing to worry about. If it stops quickly or is hard to spin, take the caliper(s) apart again and clean and lubricate (with the pads removed) the hard parts. Don't use any harsh solvents because they can deatroy the piston seals and cause brake fluid to leak out, which will find it's way onto the surface of the pads and ruin your braking power.