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  1. #1
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    Spok length help.

    Anyone mind double checking my spoke length before I order?
    King ISO hubs. 32 hole. 3 cross. Stans Alpine 26".


    Gracias

  2. #2
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    What spoke lengths did you calculate so that they can be double checked?

  3. #3
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    259 front and rear.

  4. #4
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    Using the King ISO MTB Front & Rear specs I found online... I got:

    Front - 258 disc/259 drive
    Rear - 259 or 260 disc/258 drive

    that rear disc side came out to 259.6mm. Choose which way you want to round. The others were pretty clear.

    Used the following to calculate:

    Rim ERD per Stans: 537
    King Hub info: Hub Specs | Chris King Precision Components
    Spoke Length Calculator: Spoke length calculator for calculating spokelengths

  5. #5
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    In my experience Notubes claims the ERD to the nipple shoulder only (instead of spoke end, which ideally reach the bottom of the nipple groove), so I calculated spoke lengths using an ERD of 540 mm. Measurements were for the King ISO hub front and ISO cassette hub (not singlespeed) rear. Here's the calc I used, I've built eight wheels and the results have always been as they should: Freespoke

    Front left: 260.1
    Front right: 260.9

    Rear left: 261.3
    Rear right: 259.9

    EDIT: I wrote my response while viewing other numbers. I suspect that the ERD of 537 is undersized, which explains the difference in the results we got. If you measure the ERD of the rim yourself, you'll know for sure.

  6. #6
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    I appreciate the help. Just ordered 32 258's and 32 259's. I'll update later.

  7. #7
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    I'm especially interested to hear the measured ERD for the rim and how far into the nipples the spokes thread when the wheel is tight and true. If it's really 537, the wheel should build up and last just fine.

  8. #8
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    I've built sets with the old Stan's Arch and Iron Cross using the ERD on the website. No issues. But then again I have never actually measured the actual ERD. I have found Stan's to be pretty reliable on their information.

  9. #9
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    Did the spokes reach the screwdriver groove on the nipple?

    This is a difference that will most likely not cause any issues, but could potentially cause the nipple to break at the shoulder. So it could go unnoticed easily.

    Spok length help.-nipple-thread.jpg

  10. #10
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    Got the flashlight out and checked since I haven't put the rim tape on yet. The bulk of them are to the groove on the Iron Cross rims. There are a few with some nipple thread visible on the rear wheel, maybe 1 or 2 threads. Front is almost spot on..

  11. #11
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    Sounds good to me. I'd ride wheels you built.

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