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Wheelbuilding question

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01 / Original postWheelbuilding questionloosejello · 2 Jun 2005 02 / This pagePosts 1–11Page 1 of 1 · chronological order 03 / Latest replyPost #11loosejello · 2 Jun 2005

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Original section
rec.sport.unicycling
Published
2 June 2005
Last activity
2 June 2005
Original author
loosejello
Posts
11
Discussion status
Public discussion
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314
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0
Topics
Inner tubesRim tape and valvesWheel building

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  1. Original post
    loosejello
    Archived post
    #1

    I just built a KH 2005 hub into a 24" Alex DX32. The spokes seem to be a
    bit short, they are a few mm short of the rim. I was tightening up the
    wheel, and 2 spokes popped out of their nipples, and now won't go back
    in. What do I do? How far is the spoke supposed to go into the
    nipple/rim?

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  2. onetrack
    Archived post
    #2

    that usually means you have laced it wrong. double check your hub and
    rim, to see if the spokes are in the right places. post a pic if you
    can.

    mike

    --
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  3. loosejello
    Archived post
    #3

    Everything is right, as far as I can tell.

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  4. tholub
    Archived post
    #4

    You should be able to screw on each spoke until only about two threads
    are left showing, before the wheel gets very much tension. If you can't
    even engage the threads, you either have laced the wheel wrong or you
    have spokes which are too short.

    If you laced the wheel inconsistently, you will have some spokes which
    are too short and some which are too long. Check to see that each set
    of spokes (inbound and outbound on each side) is set properly with one
    spoke in every 4 holes (3 spokes between), and that the number of spoke
    crossings is correct.

    If you used the wrong lacing pattern, you can just back out and lace it
    properly; you might have spokes appropriate for a three-cross lacing
    pattern and you laced it four-cross (or whatever).

    If your spokes are too short, you might be able to get away with
    changing the lacing pattern (three-cross to two-cross or whatever) to
    reduce the required spoke length.

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  5. Loosemoose
    Archived post
    #5

    I started building a wheel last night as well, a KH/Onza hub into a
    Surly LM rim, and I thought the spokes were playing around with me. Are
    some spoke engaged and some spokes falling short? Try straightening the
    spokes you've already installed (stop them from bowing) and that might
    give you the extra play you need to get the spokes nippled properly.

    What instructions are you using to build it up? Have you checked the
    spoke length on the 'UDC Spoke Calculator'
    (http://www.unicycle.uk.com/SpokeCalc.asp?id=269)? I get 235.52mm for
    the length. What are you currently using?

    Loose.

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  6. loosejello
    Archived post
    #6

    Whoa whoa whoa people, I'm not an idiot. I laced the wheel correctly.
    All spokes are even, about 3 mm from the rim when pointing at the right
    hole. I measured a spoke and it looks to be about 231.5 mm. I think the
    spokes were cut too short. If that's the case, what should I do about
    it? On the 2 spokes the popped loose, if I take the spoke off to the
    side and try to put the nipple on until the threads hit, the nipple goes
    on until 1 or no threads are showing.

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  7. evil-nick
    Archived post
    #7

    I just got a KH2005 hub and am having the LBS install it... 'cause I was
    afraid of this exact same thing happening 😉

    But I got a related question: I still have the tire strip from the rim
    before I took the tire off (I figured I'd cut labor by getting the wheel
    off myself). Can I reuse that strip, or should I get a new one? In
    case I'm using incorrect terminology, it's the rubber strip thingy that
    protects the tube from the spoke thingy's on the rim 😉

    --
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    its path. Where the fear has gone there will be nothing. Only I will
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    * Bene Gesserit Litany Against Fear.

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  8. Loosemoose
    Archived post
    #8

    The Strip of stuff that covers the nipples inside the rim is called 'Rim
    Tape' and no, you should never re-use it, always get a new roll. If the
    glue isn't up to the job it will become detached, slide around inside
    the rim & possibly uncover the end of a nipple. This is bad news if you
    want to keep your inner tube unpunctured...

    Loose.

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  9. tholub
    Archived post
    #9

    If you asked for 235mm spokes and they gave you 231mm, ask them to give
    you a new batch.

    You can re-use a rim strip if it's not an adhesive one. The black
    rubber ones (or red polyeurethane) are both reusable if they are not
    visibly worn out or torn.

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  10. One on one
    Archived post
    #10
    loosejello said:

    * How far is the spoke supposed to go into the nipple/rim? *

    The spoke needs to go to the head of the nipple. It should go right to
    the end. If it doesn't, you risk the possibility of the nipple snapping
    off at the head. With the spoke threaded to the end, it will give
    strength to the nipple.

    --
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    "However, like the jet pilot, if the Coker rider tries to turn too fast,
    he/she could black out."
    -Memphis Mud

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  11. loosejello
    Archived post
    #11

    Yeah, the spoke only goes into the nipple maybe 1/4", and the nipple is
    5/8" long. I emailed UDC and they are sending new spokes at no cost to
    me. Sweetness!

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