Straight pull hubs, spokes interlacing - yes or no?
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  1. #1
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    Straight pull hubs, spokes interlacing - yes or no?

    Hi Guys,
    I just wanted to hear your opinion regarding interlacing spokes (physically crossing) using straight pull hubs.
    I see that some people do cross spokes and some do not. Obviously were talking about 2x or 3x lacing.

    Whats your take on this? Any experience?

    Im asking as recently I was building a wheel based on powertap GS hub and I did the interlacing as per manufacturer recommendation.
    I must say that I had serious troubles to true the wheel and keep the equal spoke tension at the same time. Looking closer to the hub and the way the spokes were running I noticed that by interlacing them the spokes were significantly curved at the cross section which caused that they were not running in straight line from hub to the rim. The hub spoke wholes are widely spaced so Im scratching my head if the interlacing was really required.

    Thanks for putting your 2-cents on this one
    Tomasz
    Custom wheels handcrafted in Switzerland
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    https://blackcatwheels.ch/

  2. #2
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
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    They definitely don't have to touch. On most of the wheels like this that I see they don't, and I've built a few and laced them so they didn't. I'm sure someone will post a good reason one way or the other but my experience has been that they're ok not overlapping physically.
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  3. #3
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    The only thing that interlacing them does is normalize the bracing angle between heads in and heads out (or leading and trailing on a straight pull hub) spokes. I've test built several j-bend spoked wheels without interlacing and it works 100% fine.

    If you are going to torture the spokes to get them to where they can interlace, then don't. But also, if you are lacing a straight pull hub where there is that much of an angle to get them to interlace, then you are dealing with a hub that has a flange design that isn't that great. I don't love straight pull hubs because this is often the case.

  4. #4
    A wheelist
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    Quote Originally Posted by November Dave View Post
    I've test built several j-bend spoked wheels without interlacing and it works 100% fine.
    I've been tempted to do a non-interlaced j-bend set of wheels for myself for years. I've never read, with an acceptable explanation, of why we interlace spokes. "Because we've done it like that for a hundred years" doesn't count.
    .

  5. #5
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    Quote Originally Posted by Mike T. View Post
    I've been tempted to do a non-interlaced j-bend set of wheels for myself for years. I've never read, with an acceptable explanation, of why we interlace spokes. "Because we've done it like that for a hundred years" doesn't count.
    There are reasons to interlace other than "because we've done it like that for a hundred years".

    One of the best books about wheel building is "The Bicycle Wheel" by Jobst Brandt. Quote from the book:

    Spokes in a crossed pattern are usually interlaced at their last crossing before reaching the rim. Spokes coming from between the flanges are laid over those from outside the flanges. Interlaced spokes take up each other's slack during severe radial loading and reduce the chance of spokes becoming loose. If spokes become loose, their nipples can unscrew. Radial spokes cannot be interlaced and therefore, lose alignment from road shock more easily. Interlacing also gives more clearance between the spokes and the derailleur on rear wheels.

  6. #6
    'brifter' is a lame word.
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    And there is the good reason I was talking about last year.
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  7. #7
    changingleaf
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    Like November Dave said, the bracing angle is not the same for the inside spokes and outside spokes of either flange, which means the ideal tension will not be exactly the same on one side or the other, so interlacing them makes the bracing angle the same. And can help a little to keep the spokes from loosening. But, a wheel can also operate just fine if built well without interlacing the spokes.

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