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  1. #1
    baj
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    Computer wire routing with V-brakes

    Can anybody provide me with a description or better yet a photo of how best to route the front wheel sensor wire with linear pull brakes? I have read Sheldon Brown's write-up but he doesn't address V-brakes. Thanks!

  2. #2
    Chairman of the Bored catatonic's Avatar
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    Yeah, I used to have a computer on a mountain bike set up like this.

    Wrap the excess cable along the brake cable housing, then when the housing ends at the noodle, then move the cable to the structural arch on your fork's sliders, to the other side of it, and from there run it down to where you want it.

    It eats up a lot of cable ties, but this specific mounting minimizes the amount of cable wrap you have to do (thus keeping the housing a bit more felxible than if it had 20 extra wraps), as well as keeps the cable from having any bad encounters with the fork as it's compressing.
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  3. #3
    Senior Member edp773's Avatar
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    I wrap the sensor wire around the brake cable until it reaches the metal noodle ( curved cable end). Then the cable is run down the outside of the right fork tube to the best location to mount the sensor. Make sure that there is plenty of slack in the sensor wire and loops around the brake cable. Wires pulled tight usually = damaged or broken wires. Apply tie straps as needed to prevent the sensor wire from snagging on anything and test ride the bike. When you are satisfied, cut off the excess tie strap material.
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  4. #4
    baj
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    OK, thanks.

    I don't have a suspension fork. I wasn't sure if it's better to run it down the right side brake arm so it doesn't have to cross along the horizontal part of the cable, or across and down the left side so that it doesn't need as much slack for when the brakes are opened. But if I understand you right, you are suggesting going straight from the noodle to the right fork blade, with enough slack for when the brakes are opened, and not routing the wire along the brake arms at all, right? Then the wire has to just hang in space between the fork and noodle, but still that might be the best possible arrangement.

  5. #5
    Senior Member edp773's Avatar
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    Quote Originally Posted by baj
    OK, thanks.

    I don't have a suspension fork. I wasn't sure if it's better to run it down the right side brake arm so it doesn't have to cross along the horizontal part of the cable, or across and down the left side so that it doesn't need as much slack for when the brakes are opened. But if I understand you right, you are suggesting going straight from the noodle to the right fork blade, with enough slack for when the brakes are opened, and not routing the wire along the brake arms at all, right? Then the wire has to just hang in space between the fork and noodle, but still that might be the best possible arrangement.
    Yes, this is correct, and that is how the LBS mounted mine. This keeps the wire away from the moving arm where it is less likely to get damaged. With six years experience of making and routing wires on road making machinery, I only modified their mount slightly. You want enough slack to be able to disconnect the brake cable without the wire becominng tight. The excess should be toward the outside of the fork, away from the moving tire. You want some wire hanging in space, but not an excessive amout.

    Maybe someone will post a picture that will be worth a thousand words.
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    baj
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    Quote Originally Posted by edp773
    Maybe someone will post a picture that will be worth a thousand words.
    That would be great. I think I get the idea, but like you said a thousand words and all that.

    I just got a new fitness-type bike, and have only ever put a computer on a road bike with caliper brakes before. That's easy.

    I also just noticed that the front brake cable doesn't get all that close to the place on the bar where the computer will be mounted, so I guess I just have to do the wire-hanging-in-space routine there too. Areo road levers with the brake cable going under the bar tape make for much more graceful wire routing.

  7. #7
    Senior Member edp773's Avatar
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    Try these links:

    http://img.photobucket.com/albums/v6...3/DSC00070.jpg

    http://img.photobucket.com/albums/v6...3/DSC00073.jpg

    If they do not work then maybe I will need to email them to you.
    Last edited by edp773; 05-13-06 at 08:12 PM.
    Born Again Bicyclist! I found my Faith.

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  8. #8
    baj
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    Thanks! The bike I'm putting it on is a Trek FX (looks like you have one too).

  9. #9
    Senior Member edp773's Avatar
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    Your welcome. Glad I could help.

    Yes, I purchased my 7.3 FX in February and it is a great bike.
    Born Again Bicyclist! I found my Faith.

    Giant Cypress, GF Wahoo, Trek 7.3FX, Schwinn Sprint

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