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  1. #1
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    less leading than trailing spokes (32h rear disc hub / 24h rim)

    Can anybody tell me if, considering only one hub flange, the number of trailing spokes must be the same as leading spokes?

    I was considering mounting a 24h rim with a 32h hub using 2 trailing / 1 leading on the drive side and 1 trailing / 2 leading on the brake side.
    The overall count is even and this would allow me to leave every fourth hole free and distribute the holes on the flange.

  2. #2
    Nouveau Retrogrouch SuperModerator
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    less leading than trailing spokes (32h rear disc hub / 24h rim)

    Try it if you must, but just get the proper parts if you want a solid wheel build.
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    The trouble with common sense is it is no longer common

  3. #3
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    Hmmm...sounds like POWerwheels!

  4. #4
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    less leading than trailing spokes (32h rear disc hub / 24h rim)

    I am tempted to take an old wheel and cut out 8 spokes, but I do not have one I am willing to sacrifice.

    I have build a few (20") wheels with 8 spokes on one side and 16 on the other.
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    The trouble with common sense is it is no longer common

  5. #5
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    I already stumbled upon POWerwheels but I was not able to understand whether it is a joke. Given the rest of Sheldon Brown writings I think that something true hides there, but unfortunately it is not possible to ask him anymore.

  6. #6
    mtbpete
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    Geometrically it looks like the tensions will balance out since you're doing the reverse on the other side of the wheel. It also looks like it will induce some twist in the hub.

  7. #7
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    less leading than trailing spokes (32h rear disc hub / 24h rim)

    Quote Originally Posted by marcoxc View Post
    I already stumbled upon POWerwheels but I was not able to understand whether it is a joke. Given the rest of Sheldon Brown writings I think that something true hides there, but unfortunately it is not possible to ask him anymore.
    It is a total joke.
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  8. #8
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    Quote Originally Posted by marcoxc View Post
    I already stumbled upon POWerwheels but I was not able to understand whether it is a joke. Given the rest of Sheldon Brown writings I think that something true hides there, but unfortunately it is not possible to ask him anymore.
    Scroll down to the photo at the bottom of the inventor and read downward - it makes it pretty obvious that it's one of his annual April Fools' day articles.
    Attached Images Attached Images  
    I may or may not be laughing at you.

  9. #9
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    Doesn't Industry9 have a 2/1 24 spoke set of wheels. Although, their's was designed to run that way.
    Lead by my Lefty............... right down the trail, no brakes.

  10. #10
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    less leading than trailing spokes (32h rear disc hub / 24h rim)

    Quote Originally Posted by ziscwg View Post
    Doesn't Industry9 have a 2/1 24 spoke set of wheels. Although, their's was designed to run that way.
    Yes. Campy/Fulcrum were the first to bring it to market, many years ago AFAIK.
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  11. #11
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    FYI: I have built it and time will tell about durability. It has been a bit tricky to find a spoke pattern compatible with the spokes I had. First of all I assembled it as a "regular" wheelset with only 16 spokes, using half of 32 holes in hub, leaving out 8 holes in rim, resulting in a balanced wheel that could be trued although with fewer spokes. Then I added 4 trailing spokes on each side with a different (longer) spoke length.

  12. #12
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    Quote Originally Posted by marcoxc View Post
    FYI: I have built it and time will tell about durability. It has been a bit tricky to find a spoke pattern compatible with the spokes I had. First of all I assembled it as a "regular" wheelset with only 16 spokes, using half of 32 holes in hub, leaving out 8 holes in rim, resulting in a balanced wheel that could be trued although with fewer spokes. Then I added 4 trailing spokes on each side with a different (longer) spoke length.
    Somehow I missed this thread previously. Let us know how it works out.
    Rather than unbalancing the number of leading vs. trailing spokes, which means your tension varies significantly, I would have unbalanced the number of spokes per flange, as mentioned by others.
    Good luck!
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
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  13. #13
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    "Dish is illogical." Spoke of Vulcan.

  14. #14
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    less leading than trailing spokes (32h rear disc hub / 24h rim)

    Cute... picture-with-zero-explanation.
    What was the tension balance?
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  15. #15
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    @meltingfeather and @zerodish: my wheel has disc brakes and I assumed that unbalancing the number of spokes per flange (as in the photo) would result in more chances of breaking something. In the past with this same wheel I have broken spokes on both sides so I cannot say which flange (drive or disc) could run with fewer spokes.
    I just finished a ride climbing for 1000mt and everything is fine so far.
    If anybody is interested I can post a pic of the wheel.
    BTW, rebuilding the wheel I used 2.0 spokes instead of the previous 1.8 and now the ride is harsh. I did not expect such a difference.

  16. #16
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    Quote Originally Posted by marcoxc View Post
    @meltingfeather and @zerodish: my wheel has disc brakes and I assumed that unbalancing the number of spokes per flange (as in the photo) would result in more chances of breaking something. In the past with this same wheel I have broken spokes on both sides so I cannot say which flange (drive or disc) could run with fewer spokes.
    I would think that the large tension variation caused by unbalancing the leading vs. trailing spokes would cause more durability issues.
    The DS gets fewer spokes, and as others in this thread have mentioned, there are at least a few companies who use this design to achieve more uniform spoke tension left-to-right. Modern hub shells are more than rigid enough to handle the braking forces through the NDS flange.
    Quote Originally Posted by marcoxc View Post
    I just finished a ride climbing for 1000mt and everything is fine so far.
    If anybody is interested I can post a pic of the wheel.
    BTW, rebuilding the wheel I used 2.0 spokes instead of the previous 1.8 and now the ride is harsh. I did not expect such a difference.
    Hopefully everything works well for you.
    I'd like to see a picture.
    I think there is some other factor causing the perceived harshness in the ride. The difference in elasticity of those two spokes is almost nil... as in on the order of 0.001mm difference in deflection.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  17. #17
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    Seems like I am not allowed to post pictures...

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