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Calling all wheel nerds, normal nerds also welcome

Discussion in 'Downhill & Freeride' started by englertracing, Mar 14, 2019 at 6:05 PM.

  1. englertracing

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    So I've found all sorts of graphs about tension and lateral stiffness
    but how about spoke count on a like hub and rim?
    32 has 14% more spokes than 28, but I am certain that the wheel wont be 14% stiffer laterally.
    any numbers, graphs, theories?
     

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  2. jonKranked

    jonKranked Press Button, Receive Stupid

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    I have 28 spoke carbon xc wheels. The difference in stiffness is noticeable (carbon, not spoke count, but I don't find the spoke count to be detrimental. Then again it is xc). Everything else I'm on is 32. Both my sets of carbon wheels gave bladed spokes (largely coincidence, not specifically my choice). I was listening to a podcast or maybe watching some redbull special about a WC racer and I recall them saying something about bladed spokes being more laterally compliant. But I have no way to quantify that.
     
  3. englertracing

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    I found this
    spoke count.png
     

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  4. ZHendo

    ZHendo Turbo Monkey

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    Another important consideration is lacing pattern...you can make a lower spoke count wheel stiffer (not the same as stronger...) by using fewer crosses. That's how a lot of companies are getting away with using fewer spokes on complete wheels to drop weight
     
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  5. jstuhlman

    jstuhlman We noticed.

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    i’ll take my 32h 3x and not look back, thanks.
     
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  6. Westy

    Westy the teste

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    What if you are throwing a massive whip?
     
  7. Jm_

    Jm_ Turbo Monkey

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    superboost
     
  8. Happymtb.fr

    Happymtb.fr Monkey

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  9. slyfink

    slyfink Turbo Monkey

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    This is what Roger Musson wrote about spoke count in his book "Professional Guide to Wheel Building" (I have the 6th edition, not sure how many have come out since [edited to add: he's at 7 now.]):
    upload_2019-3-18_10-46-23.png
    source
     
    #9 -   Mar 18, 2019 at 10:48 AM
    Last edited: Mar 18, 2019 at 10:52 AM
  10. Cerberus75

    Cerberus75 Monkey

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    I find you dont notice much difference if the wheel is built well. Until you get a stick in the spokes. You can loose a spoke and ride out with 32 count.
     
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  11. slyfink

    slyfink Turbo Monkey

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    this has been my experience as well.
     
  12. mykel

    mykel Turbo Monkey

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    Yup, soft taco a wheel.
    Remove from fork.
    Beat against ground to "true" it back up.
    Wrap broken (3) spokes around adjacent spokes
    Re-install wheel
    Ride - albeit slowly, out.

    32 FTW.
     
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  13. Jm_

    Jm_ Turbo Monkey

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    Oh, you've been to South Mountain too.
     
  14. johnbryanpeters

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    Been there, done that...
     
  15. slyfink

    slyfink Turbo Monkey

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  16. englertracing

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    I like the Idea of a 36h with dt aerolite
    but nobody is doing 36h anymore really, I mean 36h hadley hubs can be had for cheap... Flanges are narrow AF though and nobody makes a rim for that really.

    But really I was just curious about the theoretical comparison of the same hub and wheel design with
    36 spoke with something like DT revolution 2.0 - 1.5 - 2.0
    32 spoke with something like DT Competion Race with 2.0 - 1.6 - 2.0
    28 spoke with something like DT Competion with 2.0 - 1.8 - 2.0
     
  17. jonKranked

    jonKranked Press Button, Receive Stupid

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  18. Jm_

    Jm_ Turbo Monkey

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    350g aluminum rims...what did people think would happen? lol....

    It's been discussed before, but a HUGE amount of stiffness comes from the rim itself. If anything, some of the carbon rims do allow you to go to lesser spoke counts, but a majority of this on high end bikes is to save weight and cost and look cool IMO, not to build a durable light and stiff wheelset. That's not the ultimate priority on a mass produced bike where 4 spokes less makes your bike lighter than the next brand.