Cycling Equipment · Public discussion

V-Daptor, Mini-V, etc.

Started by Matt O'Toole · · Last activity · 18 posts · 381 views

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Cycling Equipment
Published
14 October 2007
Last activity
24 October 2007
Original author
Matt O'Toole
Posts
18
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  1. What's the best way to make old brake levers (ca '95, for traditional
    cantilevers) compatible with newer MTB brakes? Should a use a regular
    V-brake with a V-Daptor, a Tektro Mini-V, or what? Good modulation is
    important.

    The problem is, I need a new suspension fork, but I don't want to replace
    everything else -- brakes, brake levers, shifters, etc. I'm sick of
    combing eBay for old Judy parts and other old forks with brake hangers.

    Of course it would be great if clamp-on brake hangers were available.

    Matt O.

  2. Matt O'Toole said:

    What's the best way to make old brake levers (ca '95, for traditional
    cantilevers) compatible with newer MTB brakes? Should a use a regular
    V-brake with a V-Daptor, a Tektro Mini-V, or what? Good modulation is
    important.

    The problem is, I need a new suspension fork, but I don't want to replace
    everything else -- brakes, brake levers, shifters, etc. I'm sick of
    combing eBay for old Judy parts and other old forks with brake hangers.

    Of course it would be great if clamp-on brake hangers were available.

    Matt O.

    Just get new brake levers, around $15 for some spiffy Tektros. If you
    have integrated shifter/brake levers, the basic Shimano EZ-fire combos
    used on cheapie mtbs and hybrids shift just fine and have a long pull
    for vee brakes. Available for seven and eight speed clusters for $30-
    ish.

    If you're attached to your old kit, then use a Travel Agent. I saw a
    new version that attaches inline in case you want to use the old
    levers with cable disc brakes.

  3. Matt O'Toole said:

    What's the best way to make old brake levers (ca '95, for traditional
    cantilevers) compatible with newer MTB brakes? Should a use a regular
    V-brake with a V-Daptor, a Tektro Mini-V, or what? Good modulation is
    important.

    The problem is, I need a new suspension fork, but I don't want to replace
    everything else -- brakes, brake levers, shifters, etc. I'm sick of
    combing eBay for old Judy parts and other old forks with brake hangers.

    Of course it would be great if clamp-on brake hangers were available.

    New levers are cheaper than the adapters but either will work. MiniV
    have clearance issues, not always workable.
    --
    Andrew Muzi
    www.yellowjersey.org
    Open every day since 1 April, 1971

  4. A Muzi said:


    MiniV have clearance issues, not always workable.

    What is the typical limitation on tire size for such brakes? I have a
    flat bar road bike with fattish slicks (about 38mm) whose crappy,
    crappy rear cantilevers I would like to replace with Mini-Vs if it's
    plausible.

    Does anybody here know the pivot-to-cable distance for Tektro Mini-
    Vs?

    Chalo

  5. Quoted message said:
    A Muzi said:

    MiniV have clearance issues, not always workable.

    Chalo said:

    What is the typical limitation on tire size for such brakes? I have a
    flat bar road bike with fattish slicks (about 38mm) whose crappy,
    crappy rear cantilevers I would like to replace with Mini-Vs if it's
    plausible.
    Does anybody here know the pivot-to-cable distance for Tektro Mini-
    Vs?

    Cable clears a 35mm tire on most bikes. Stud position might vary a small
    amount.
    --
    Andrew Muzi
    www.yellowjersey.org
    Open every day since 1 April, 1971

  6. A Muzi said:
    Matt O'Toole said:

    What's the best way to make old brake levers (ca '95, for traditional
    cantilevers) compatible with newer MTB brakes? Should a use a regular
    V-brake with a V-Daptor, a Tektro Mini-V, or what? Good modulation is
    important.

    The problem is, I need a new suspension fork, but I don't want to replace
    everything else -- brakes, brake levers, shifters, etc. I'm sick of
    combing eBay for old Judy parts and other old forks with brake hangers.

    Of course it would be great if clamp-on brake hangers were available.

    New levers are cheaper than the adapters but either will work. MiniV
    have clearance issues, not always workable.

    Do the adaptors work well, or are they hopelessly fiddly to set up?

    This seems like the best solution, because if I get new brake levers I have to
    get new shifters too.

    I'm also thinking of making a cable hangar out of a brake booster.

    Matt O.

  7. A Muzi said:
    Quoted message said:

    A Muzi wrote:

    Quoted message said:
    Quoted message said:
    Quoted message said:

    MiniV have clearance issues, not always workable.

    Quoted message said:

    Cable clears a 35mm tire on most bikes. Stud position might vary a small
    amount.

    So it probably wouldn't clear a 2" MTB tire...

    Matt O.

  8. Matt O'Toole said:


    I'm also thinking of making a cable hangar out of a brake booster.

    There's this:
    http://harriscyclery.net/itemdetails.cfm?ID=1805

    A bolt-on cable hanger. As the disclaimer says, it should go on the
    top loop of the sliders, not on the crown.

  9. Hank Wirtz said:
    Matt O'Toole said:

    I'm also thinking of making a cable hangar out of a brake booster.

    There's this:
    http://harriscyclery.net/itemdetails.cfm?ID=1805

    A bolt-on cable hanger. As the disclaimer says, it should go on the
    top loop of the sliders, not on the crown.


    I'd be more inclined to try a powerhanger first, as this design doesn't
    have the unstable equilibrium of the Tektro stop. With the Tektro the
    brakes will fail if the bolt slips, as it is not designed to work with a
    flat surface.

    --
    /Marten

    info(apestaartje)m-gineering(punt)nl

  10. Chalo said:
    A Muzi said:

    MiniV have clearance issues, not always workable.

    What is the typical limitation on tire size for such brakes? I have a
    flat bar road bike with fattish slicks (about 38mm) whose crappy,
    crappy rear cantilevers I would like to replace with Mini-Vs if it's
    plausible.

    Does anybody here know the pivot-to-cable distance for Tektro Mini-
    Vs?

    76mm on the Tektro 926A.

  11. Matt O'Toole said:

    Do the adaptors work well, or are they hopelessly fiddly to set up?

    I've used the Travel Agent and found the set-up a minor, but not negligible trouble. The cable had to be "helped" some with a tool to settle properly at the transition and you had to guesstimate how much slack you were going to end up with.
    Still, no big deal. It might have you grumbling, but not cursing out loud.

  12. What is a Powerhanger?

    SW

  13. Steve Watkin said:

    What is a Powerhanger?

    SW


    www.m-gineering.nl/pwrhanger.jpg

    --
    /Marten

    info(apestaartje)m-gineering(punt)nl

  14. M-gineering said:
    Steve Watkin said:

    What is a Powerhanger?

    Quoted message said:

    www.m-gineering.nl/pwrhanger.jpg

    Clever.

    Jasper


  15. Quoted message said:

    New levers are cheaper than the adapters but either will work. MiniV
    have clearance issues, not always workable.

    YCHYCAEIT
    there you are 80mph sideways over the snow, tap the rear off the
    snowbank head down the straight foot down and...
    the experience comes to a stop as the floor pan slides up onto a 1'
    drift

  16. Jasper Janssen said:
    Quoted message said:
    Quoted message said:

    What is a Powerhanger?

    Quoted message said:
    Quoted message said:

    www.m-gineering.nl/pwrhanger.jpg

    Quoted message said:

    Clever.

    Clever in that they realized it required a 2:1 lever ratio of the
    cable anchor and that its angles needed to be matched to that specific
    fork spacing between anchor bolt to cantilever pivots. The two cable
    anchor levers are so short that a bit of pad wear can ruin the
    geometry as cosine error becomes limiting. The only plus I see is
    more tire clearance for mud, but then that gets lost if you ride in
    mud that causes rapid pad wear. I suspect this device will either get
    a redesigned or go away all together.

    Jobst Brandt

  17. datakoll aka gene daniels said:

    ...
    there you are 80mph sideways over the snow, tap the rear off the
    snowbank head down the straight foot down and...
    the experience comes to a stop as the floor pan slides up onto a 1'
    drift

    HEY! That sounds like my daily commute!

    --
    Tom Sherman - Holstein-Friesland Bovinia
    Beer - It's not just for breakfast anymore!

  18. Quoted message said:
    Jasper Janssen said:
    Quoted message said:

    > What is a Powerhanger?

    Quoted message said:
    Quoted message said:

    www.m-gineering.nl/pwrhanger.jpg

    Quoted message said:

    Clever.

    Clever in that they realized it required a 2:1 lever ratio of the
    cable anchor and that its angles needed to be matched to that specific
    fork spacing between anchor bolt to cantilever pivots. The two cable

    Yes, exactly.

    Quoted message said:

    anchor levers are so short that a bit of pad wear can ruin the
    geometry as cosine error becomes limiting. The only plus I see is
    more tire clearance for mud, but then that gets lost if you ride in

    More clearance compared to what?

    Quoted message said:

    mud that causes rapid pad wear. I suspect this device will either get
    a redesigned or go away all together.

    And what exactly do you use *then* to hold the end of your outer cable?

    Jasper

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