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Wheelbuilders! Hope/mavic wheel build spoke Q?

Andy BAndy B Posts: 8,115
edited March 2012 in MTB workshop & tech
I'm going to be building up some wheels soon

But I'm getting different spoke lengths from different spoke calculators

I'm using Hope Pro II Evo hubs (std 135 rear spacing version) & Mavic XC 717 Disc rims with a 3x pattern

One calculator gives measurements of 262.3/263.9 for the front & 263.3/262.7 for the rear

Another calculator gives 260.7/262.5 for the front & 261.8/261.8 for the rear

I'm guessing that 264mm spokes will cover all eventualities?

Can anyone who has built up these parts into a wheel confirm that 264mm is the correct length?
2385861000_d125abe796_m.jpg

Posts

  • TorresTorres Posts: 1,266
    Never built that combo but can't be too much help I'm afraid.

    have you made sure you've selected the same nipple lengths on all 3 calculators? And did you do the measurements yourself or use the calculators databases?

    Both can affect the result; Wheelpro reccomends taking the hub measurements from the manifacturers webby but always measuring the rims ERD yourself.
    What We Achieve In Life, Echoes In Eternity
  • estampidaestampida Posts: 1,008
    as a guide

    I have built wheels on pro 2 with an erd of 540 (sun rims)

    came out at 260-262 range

    they tend to state the erd on the rim sticker I have never measured, if the rim is slightly egg shaped
    it could be miss-measured

    always round down the spoke size as a tiny bit of thread showing is way better than running out of thread on the spoke
  • benpinnickbenpinnick Posts: 4,148
    I agree, I would expect a 260/262 mix for these rims.
    A Flock of Birds
    + some other bikes.
  • Andy BAndy B Posts: 8,115
    I've erred on the side of caution & gone for 264mm

    I can roll more thread on the spokes if needs be

    CRC are doing DT Revelation spokes at virtually trade prices & I wasn't going to pass that up
    2385861000_d125abe796_m.jpg
  • mrmonkfingermrmonkfinger Posts: 1,452
    I've just build on hope hubs and a sun rim with ERD of 543mm. Spokes were 264mm all round, that length was just right.

    Interwebz says the mavics are 538.5mm. So 260mm or 262mm sounds right for this combo.
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