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990 Brake mounts + Caliper brakes?

Old 11-22-10, 02:16 PM
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990 Brake mounts + Caliper brakes?

From reading the forums, I've figured out that 990 brake mounts = u-brake mounts.

Can someone tell me explicitly though if these caliper brakes would be compatible with 990 mounts? Or is that whole distinct brake mount situation?

For the record, I am aware this makes little to no sense but I am getting experimental here.
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Old 11-22-10, 03:48 PM
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First, those are not caliper brakes. Those are Cantilever brakes.
This is a caliper brake: https://www.danscomp.com/484009.php?cat=PARTS

Now to answer your question, no the brakes in your link will not work with 990 (U-Brake) mounts.
The pivot point on 990s (where the brake mounts to the frame) is above the rim. The pivot point on cantis & V-brakes are below the rim
-Bill
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Old 12-10-10, 11:29 PM
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Originally Posted by wds178
First, those are not caliper brakes. Those are Cantilever brakes.
This is a caliper brake: https://www.danscomp.com/484009.php?cat=PARTS

Now to answer your question, no the brakes in your link will not work with 990 (U-Brake) mounts.
The pivot point on 990s (where the brake mounts to the frame) is above the rim. The pivot point on cantis & V-brakes are below the rim
-Bill
Is the different pivot point just to accommodate the different brake designs, or is there an advantage to having one or the other as far as braking performance? I noticed that some U-brakes posts are mounted on the seat stays, while some are mounted on the chain stays. Is there an advantage to either mounting location?
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Old 12-12-10, 03:57 PM
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Originally Posted by vredstein
Is the different pivot point just to accommodate the different brake designs, or is there an advantage to having one or the other as far as braking performance? I noticed that some U-brakes posts are mounted on the seat stays, while some are mounted on the chain stays. Is there an advantage to either mounting location?
that is a good question
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Old 12-13-10, 12:37 PM
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chainstay mounts under the chain stays means you can run any brake with a small drivetrain (such as 25/9, a very popular combo) and not worry about the chain rubbing on the brake. I have a frame with lowered chainstays (welded a little lower on the BB shell), low-profile Fly brake, and low-profile mounts, so I can run a 27/10 ratio without any problem. some say that chainstay brakes work better, but I think it has more to do with the dialed-ness of the brake setup you have.
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