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My brakes/rims suck!!!(12 posts)

My brakes/rims suck!!!adventurefind
Sep 12, 2002 6:22 AM
Is anyone running Velocity rims? I can't get the squel out of mine. My rims are not machined, could that be the problem? I have Sachs brake pads on front and they still have a lot of meat. I think the only alternative would be to try new pads. DA! It drives me nuts! The rear is alright, but the front squelas like a pig being prepped for castration by a FFA student (I was one, and castrated a pig for a grade in high school).

Any suggestion would help.
re: My brakes/rims suck!!!triangleforge
Sep 12, 2002 8:16 AM
What brakes are you running? It might not be the pads or rims, as some brakes just can't be quieted -- Rivendell, for example, specifically says in their catalog on the Avid Shorty Brakes that it's possible that they will squeal no matter what you do, and that they won't refund your money just because you can't make it stop. Not all of the Avids on bikes I know of squeal, but a substantial miniority do, no matter what.

It's also conceivable that the fork/seatstays or Canti posts are flexing just enough, which you could cure with an add-on brake arch (my brain just can't locate the official name for these doohickies right at the moment -- sorry!) by Salsa or similar.

Good Luck!
re: My brakes/rims suck!!!adventurefind
Sep 12, 2002 8:34 AM
I have Sachs brakes on my cross rig. I used to have the brakes on a Bontrager and they worked fine. But just for the odd reason, the front brake and the wheel don't get along. I am just going to get new pads and see if it helps.
Include me in that substantial minoritySteve_O
Sep 12, 2002 9:58 AM
I have Avids and have learned to live with the squealing.

Thanks to advice from this forum I now run them with lots of toe-in and it seems to help things. Also I recently got some Kool Stop all weather pads (red colored ones) and they seem to help reduce the squeal over stock Avid pads...

Finally Avid sent me some special compound pads which also helped (until I wore them thin)...

I can't say that I am familar with Sachs brakes but this topic of squealing cantis does seem to come up a lot...
Me too, my avid (front) is a squeler as well.atpjunkie
Sep 12, 2002 1:11 PM
new compound helps for about the first 3 rides.
gotta try some cool stops. Canti's just squeal, even my old mafacs tended to howl.
re: My brakes/rims suck!!!www-mtnpedaler-com
Sep 13, 2002 7:04 AM
Try sanding or filing the pads down a little. Sometimes my pads get a glaze on them and start to squeal. I just file off the glaze and it stops the noise. It's only a temp fix though.
re: My brakes/rims suck!!!Ash
Sep 13, 2002 9:10 AM
I think rim brakes just need care and attention on a regular basis.

If they are glazed at all you are losing stopping power and probably contributing to squeal.

Use green scotch brite pads on the rims to remove pad residue and other crap.

Use file or sand paper on the pads, and toe them in.

I rememeber something on Bontrager's site from years ago where he showed how to set up cantilever brakes to get the best stopping power. In his set up, the brakes 'feel' mushy but that mush is actually the brake pad squeezing into the rim, which is where the power comes from. Firm feeling brakes have the impression of being stronger but I don't think they are as compared to his set up. In my experience the firm feeling brake setup also tended to squeal more.

Hope that helps.

Do many /any people run V brakes using that pulley thingy that allows you to use regular non-v brake levers?
re: My brakes/rims suck!!!www-mtnpedaler-com
Sep 13, 2002 11:51 AM
Yeah, I've jumped on a couple of bikes with the pulley thing. I only did a tour of the parking lot. They felt mushy but had big stopping power.
V-brakesadventurefind
Sep 13, 2002 12:38 PM
I did have my rig set up with Avid v-brakes and travel agents. The nice thing about the agents was that they had barrel adjusters, making tweaks easy. But they did squeal though, and I thought putting on my old cantis would help.
Yep I've got those pulleysOffRoadTourer
Sep 13, 2002 4:55 PM
The pulleys are called "Travel Agents" sold through Quality Bicycle Products.

I have them on a set of Avid SD 3.0 V-brakes and use Paul Cross Levers and Shimano STI levers. They work very, very well, lots of power and modulation. I cannot recommend them enough. I have never heard a howl or screech out of them. The only hassle is the initial set-up of the cable and the travel agent is a pain, fortunately you only need to do that once.
BRAKESHENRY K
Sep 18, 2002 3:39 AM
I've used the travel agents. They work well but I took them off before a week long ride with the fear that if something went wrong with them miles from parts it would not be a good situation. As I have said many times...we need disc brakes that work with STIs!!!
Yes! But it will never happenpeter in NVA
Sep 19, 2002 1:21 PM
I want discs for my cross but after watching (for the 100th time) the 2000 World Cyclo-Cross Championships video, realized the pros don't need them. Why bother if you get a new bike up to three times in a race. If cross didn't allow bike replacement then I think the market would be pressured for discs-like mountain bikes.