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  1. #1
    veggie
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    May 2010
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    A couple quick wheel build questions

    First, is the spoke calculator on prowheelbuilder.com a good one?

    Second, what does "CL" mean when looking at hub measurements?
    I will be building a wheelset using e13 trs hubs. They list measurements as CL to DS/NDS. Their numbers are here. Based on the numbers I'm assuming it means center of the hub to the drive/non-drive flange, but I just wanted to make sure. And since prowheelbuilder uses flange to locknut measurements, on a 142mm hub I would use 142/2=71, 71-center to flange=flange to locknut?

    Hope that all made sense. I have built wheels and have a general idea of what I'm doing, but I've never had to measure for spokes and the cost of this set is making me nervous and double check everything.

    Thanks!

  2. #2
    mtbr member
    Reputation: 4slomo's Avatar
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    Jul 2006
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    1,565
    CL is an abbreviation for the center line of the hub, midway between the spacers that fit to the frame.

    You should be measuring from the locknut to the flange on the hub, and then entering that number into the calculator, rather than relying on listed measurements. Likewise, you should be measuring ERD of your rim, rather than relying on listed measurements. Then you have a better than average chance of ordering the correct spoke lengths.
    Hey everybody, ride my wheels! They ride good, real good.
    I'm a wheel builder. SRLPE Wheel Works. Send me a PM.

  3. #3
    transmitter~receiver
    Reputation: meltingfeather's Avatar
    Join Date
    May 2007
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    8,133
    Quote Originally Posted by rossimcfly View Post
    First, is the spoke calculator on prowheelbuilder.com a good one?
    no.
    use something else.
    The DT Swiss calculator is fine, just put in all your own numbers and make sure you understand what each input is (don't guess).
    read the disclaimer to see how much confidence they have in their own calculator.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

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