squeal be gone

[viv]

I know, I know. toe in. Well it aint workin Ive tried all degrees of toe in on my front Avid single Ds. I replaced the pads with some red Koolstops then went back to black. I cant make them stop squealing under hard braking. I sanded the pads ever so lightly and still no luck. Anyone else have this problem. I do all the maintenance aside from wheel building on my ride and this is the only one that stumps me.

[halls]

Well i've seen this in the shop on new bikes out of the box. Some things to try. Forget toe in for just a moment. #1 align the pad to be parallel to the rim.(i'am assuming you have v-brakes) Tighten pad nut to 15 pounds of effort on a 4 inch wrench (60 inch pounds ). Repeat this on the other side. then attach your cable to the brakes.(also with 60 inch pounds) set the pads touching on one side and about 4mm off on the other side. then squeeze lever about a dozen times and check alignment. if ok,move on to adjusting set screws for pad clearance,equal on both sides. Torque is important, pads can vibrate under hard braking if not similar alignment and torque. Finally , check the rim for any contamination from cleaning or lube liquids. Use a good clean agent, like simple green or iso alcohol then rinse . If this doesn't work, it might be worth going to a good shop and asking what next! I'am no guru, just some ideas to maybe help.:alien:

[viv]

Thanks. I think vibration may be the problem. Come to think, I had another rim on the bike that had the same problem. I think there may be some play at the posts. I may also try some grease. Too wet to ride might as well work on it.

[viv]

I'm so #&^! bored i'm gonna reply to my reply. Anybody see the latest MBA they suggest using kids sidewalk chalk on the rim to silence squeals. Anyone tried this? Any color suggestions?:banana:

[viv]

Just an update. Replaced my ageing single digits with some of the new single digit ultimates. Total silence one finger action. My old brakes had developed a lot of play at the post. Must have been creating a harmonic distortion or spacial anomoly. Any way now you cant hear me coming.

[firetruck]

Hey we don't need to hear all your problems.
See ya Friday. ride on.

[viv]

Hey, Dont you have work to do? My gear is packed, hows yours. also added a tray to the rack so i suppose we can bring your bike. chequamegone

[firetruck]

Don't worry about me. Just don't forget to bring your coffee.

[Trevize1138]

Problem: Brakes squeaking

Solution: Brakes need better lubrication. Apply WD40 liberally.

[viv]

I tried White Lightning but it just made me faster

[CinderCone18]

try angling your brake pads a tiny bit. Do NOT use lubricant!

[zerpy]

Lubricant? That sounds like a waste of money to me. Try tightening them down against the rim so that there is no space between the pad a rim, then snug them a little more. Try to push the bike, if you hear a squaeal then tighten them some more. Sooner or later you won't hear a squeal when you try to move the bike...

Another possibility is to remove the offending brakes compeletly, but that can be almost as expensive in the long run as WD40, minus the cost of the WD40.

[viv]

After having replaced my old Avid single ds with the New Ultimate single digits the squeel is gone. These new brakes are a wonderful display of craftsmanship and make for powerful stoppers. Just to be on the safe side though, I replaced the entire bike with a SC Blurr equipped with Hayes disks. This seams to be the utimate squeel fix and I would recommend it to anyone.,:D

[CinderCone18]

WD40 is possibley the worst thing you could use on your bike apart from a hack saw. wd40 is a water based lubricant, it ATTRACTS dirt and causes it to stick, it is also water based so when water comes in contact with it doesn't repell it. Never use it on or chain or anything for that fact it WILL wreck something. Use a waxed or teflon based lubricant. Plus it will work much better. Thanks.