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  1. #1
    you guys ridin'? MTBaddict's Avatar
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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?
    Santa Cruz Heckler, Gary Fisher Hoo Koo E Koo, Schwinn Le Tour III, Giant Perigee, Motobecane Le Champion Ti SL, Jamis Nova, Salsa Vaya

  2. #2
    crosser
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    frm has a ball beared min-v ,thant works well
    and it is super lightweight .128 gramm ,including everything .

  3. #3
    blah onetwentyeight's Avatar
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    paul components use a "o-ring sealed stainless steel pivot"


  4. #4
    you guys ridin'? MTBaddict's Avatar
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    Quote 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?
    Santa Cruz Heckler, Gary Fisher Hoo Koo E Koo, Schwinn Le Tour III, Giant Perigee, Motobecane Le Champion Ti SL, Jamis Nova, Salsa Vaya

  5. #5
    you guys ridin'? MTBaddict's Avatar
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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.).
    Santa Cruz Heckler, Gary Fisher Hoo Koo E Koo, Schwinn Le Tour III, Giant Perigee, Motobecane Le Champion Ti SL, Jamis Nova, Salsa Vaya

  6. #6
    Senior Member TimJ's Avatar
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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.
    fun facts: Psychopaths have trouble understanding abstract concepts.
    "Incompetent individuals, compared with their more competent peers, will dramatically overestimate their ability and performance relative to objective criteria."

  7. #7
    you guys ridin'? MTBaddict's Avatar
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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!
    Santa Cruz Heckler, Gary Fisher Hoo Koo E Koo, Schwinn Le Tour III, Giant Perigee, Motobecane Le Champion Ti SL, Jamis Nova, Salsa Vaya

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