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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 11-07-08, 10:07 PM   #1
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Brakes with Sealed, Precision Pivots

I haven't worked with many cantilever brakes, but the ones that I have worked with were designed to rotate directly on the 8mm diameter "braze-on" frame post. Over time, the post can wear out-of round. I have more experience with V-brakes that mount on the same type of post but incorporate an internal bushing on which the caliper arm rotates. There is no relative motion between the bushing and the braze-on post, only between the caliper arm and the bushing.

I am concerned about wear and corrosion of the post and would like to know if there are common canti brakes that use a bushing or bearing to avoid damage to the post. How many of these designs actually use seals to maintain the bushing/lubrication and keep contamination out?
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Old 11-08-08, 06:44 AM   #2
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frm has a ball beared min-v ,thant works well
and it is super lightweight .128 gramm ,including everything .
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Old 11-08-08, 08:58 AM   #3
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paul components use a "o-ring sealed stainless steel pivot"

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Old 11-08-08, 02:32 PM   #4
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Originally Posted by Elmar Schrauth View Post
frm has a ball beared min-v ,thant works well
and it is super lightweight .128 gramm ,including everything .
SWEET! I like cartridge bearings.

I see they are made from titanium I am afraid to ask the price. Probably cost more than Paul's. Do they make an aluminum version?
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Old 02-19-09, 06:04 PM   #5
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Do Shimano BR-R550 brakes rotate on the canti post or do they have an internal bearing/bushing on which they rotate (like Paul's, Shimano XT, etc.).
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Old 02-20-09, 12:11 PM   #6
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Ye olde suntour xc pro brakes pivot on a brass bushing. So do some models of older dia compe brakes, basically any kind where the return spring is internal will pivot around a bushing rather than the post. You can find 'em nos on ebay.
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Old 02-21-09, 10:14 AM   #7
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That's a good clue, I suspected that those with an internal spring probably had an internal bushing as well. Thanks!
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