Cycling Equipment · Public discussion

XT cantilevers

Started by Bryan · · Last activity · 4 posts · 617 views

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Cycling Equipment
Published
12 September 2003
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15 September 2003
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Bryan
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  1. Hi,

    Hope someone can help. I have some old XT canti's that I want to put on my touring bike. The problem
    seems to be that with the fork blades closer together there doesn't seem to be enough power in the
    return spring to pull the brakes fully away from the rim. Unfortunatley the canti bosses only have
    one hole to put the spring through, and though I have tried tightening the springs by 'winding them
    up' I dont seem to be getting anywhere. Also I've greased the cable to make sure its running freely,
    and that hasn't helped.

    Does anyone know if it is possible to remove the spring from XT cantis (I can then realy try and
    imporve the power), or has anyone got any other ideas. Failing that what braeks would make a decent
    alternative (I've thought about Avid Shorty's, any good?), V's are not an option due to drop bars.

    TIA

    Bryan

  2. Bryan asked:

    Quoted message said:

    Hope someone can help. I have some old XT canti's that I want to put on my touring bike. The
    problem seems to be that with the fork blades closer together there doesn't seem to be enough
    power in the return spring to pull the brakes fully away from the rim. Unfortunatley the canti
    bosses only have one hole to put the spring through, and though I have tried tightening the
    springs by 'winding them up' I dont seem to be getting anywhere. Also I've greased the cable to
    make sure its running freely, and that hasn't helped.

    Does anyone know if it is possible to remove the spring from XT cantis (I can then realy try and
    imporve the power), or has anyone got any other ideas. Failing that what braeks would make a
    decent alternative (I've thought about Avid Shorty's, any good?), V's are not an option due to
    drop bars.

    There were lotsa different generations of XT cantilevers. Most, however featured two different
    spring holes _inside_ the cantilever, for the other end of the spring. The intent was to accommodate
    brake levers with/without built-in return springs.

    Make sure that the cantilever boss is smooth and well greased.

    See also sheldonbrown.comcantilever adjustment.html

    Sheldon "My Favorite Cantis" Brown +----------------------------------------+
    | It is easier to ask forgiveness | than it is to get permission | --Admiral Grace Hopper |
    +----------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone
    617-244-9772 FAX 617-244-1041 harriscyclery.comharriscyclery.com Hard-to-find parts shipped Worldwide
    captainbike.comcaptainbike.com sheldonbrown.comsheldonbrown.com

  3. In article <[email hidden]>,

    Kraig Willett said:

    "Tim McNamara" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    I think you're micro-focusing on something that is inconsequential.

    When do performance gains become consequential for you, Tim? 1%, 10%, 50%? The number you give
    will help put your comments into a better perspective for those reading.

    For me personally? Don't know when those gains become consequential- I no longer race so performance
    is really not a personal issue any more. OTOH I have a lot more fun on my bike than I did in the 10
    years I raced and that's far more important to me. For me, nowadays, "performance" is evaluated
    differently and "performance gains" are more related to comfort and endurance than speed. I can ride
    400 km in about 18 hours without too much trouble, having gotten into doing brevets this year. So
    the yardstick I use to evauate things currently is different than it was.

    When I was racing, performance gains would have been evaluated on a cost-benefit basis. If a 1% gain
    cost $1000, I wouldn't have bothered. For a 1% or 2% gain to have been worth chasing, I would have
    had to have been convinced that I could not make any further gains by doing something like losing
    weight or a better training structure. Very few riders- and probably no non-professionals IMHO- are
    anywhere near the upper limits of their potential fitness and physical performance. IMHO it makes
    sense to maximize my fitness and abilities- which is cheap- rather than spend beaucoup bucks on
    stuff which will in all likelihood provide equivocal gains at best.

    I see a lot of guys at bike races riding bikes that look like they were cobbled together out of a
    dumpster who kick the asses of guys riding $8,000 worth of wonderbike. Speed is not really for sale,
    and neither is race smarts.

  4. In article said:


    There were lotsa different generations of XT cantilevers. Most, however featured two different
    spring holes _inside_ the cantilever, for the other end of the spring. The intent was to
    accommodate brake levers with/without built-in return springs.

    Sheldon--

    I am installing XT (model BR-M732) cantilevers on my cyclocross bike, with current non-STI Shimano
    Ultegra/Dura Ace brake levers (the kind you sell at Harris); as you mention, there are two spring
    holes inside the cantilever, one marked 'normal,' the other 'SLR.'

    Which setting should I use with this lever?

    TIA Michael

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