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  1. #1
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    24hole hub to a 36hole rim ?

    Good day mtbr folks

    I have a shimano mt55 29er wheelset, it uses a 24hole hub, straight pull spokes. I crashed the front wheel and im looking for an alternative this week while i order the replacement 24hole rim.

    is it possible to lace the hub and keep the 301mm spokes on a 36 rim?
    option 1: i will lace it as it looked on the stock wheelset but skip every 3rd hole.
    option 2: or keep the 4 spokes together and make it look like this
    http://buffal0b1ll.com/bikes/100_1330.jpg

    how strong is this wheel (option1 and option2 lacing) and are there any other rim options? right now the only available rims in my LBS are 36 and 32h. everything else is on order and wont be here til the next month. i know i can buy a new set of wheels right now while i wait but there must be something else i can do to these hubs? atleast something i can use on the friendly roads. thanks!

  2. #2
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    What is a friendly road?
    Trees & rocks do not move, while cars are big, heavy, fast, and piloted by angry cycle-haters.
    ----
    No, unless the replacement rim has the same ERD.
    A 24 spoke wheel will never be as strong / stiff as a 32 or 36h wheel.
    Factory wheels use proprietary parts, and do not play well with others.
    IME - shiitcan the 24h hub, keep the rear as a spare, get a new set of 32h wheels, and at all costs, avoid roads.
    The best is the one you want to ride most often..

  3. #3
    Nouveau Retrogrouch SuperModerator
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    24hole hub to a 36hole rim ?

    Quote Originally Posted by severthee View Post
    Good day mtbr folks

    I have a shimano mt55 29er wheelset, it uses a 24hole hub, straight pull spokes. I crashed the front wheel and im looking for an alternative this week while i order the replacement 24hole rim.

    is it possible to lace the hub and keep the 301mm spokes on a 36 rim?
    option 1: i will lace it as it looked on the stock wheelset but skip every 3rd hole.
    option 2: or keep the 4 spokes together and make it look like this
    http://buffal0b1ll.com/bikes/100_1330.jpg

    how strong is this wheel (option1 and option2 lacing) and are there any other rim options? right now the only available rims in my LBS are 36 and 32h. everything else is on order and wont be here til the next month. i know i can buy a new set of wheels right now while i wait but there must be something else i can do to these hubs? atleast something i can use on the friendly roads. thanks!
    Straight pull hubs need to be laced in a specific way. Not likely it will work with the 36 hole rim. Even less likely the spokes could be reused.
    mtbtires.com
    The trouble with common sense is it is no longer common

  4. #4
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    Quote Originally Posted by Flyin_W View Post
    What is a friendly road?
    Trees & rocks do not move, while cars are big, heavy, fast, and piloted by angry cycle-haters.
    ----
    and at all costs, avoid roads.
    lol so true, it is actually more hostile down the street

    the wtb speedisc erd is 603mm
    the alex rim erd is 601-602mm
    i measured the mt55 at 600mm

    trust me i tried throwing away the front hub,, but after servicing it and retensioning (twas my first time) i got a little bit attached to it. i ll build on it as an experiment. but at the same time i ll build a 32spoke wheel and give myself some peace of mind

  5. #5
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    Quote Originally Posted by shiggy View Post
    Straight pull hubs need to be laced in a specific way. Not likely it will work with the 36 hole rim. Even less likely the spokes could be reused.
    i was actually thinking of lacing it the same way as stock. just skipping every 3rd hole on the 36h rim. i thought it would look the same with just a little spread?

  6. #6
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    In my opinion? You're wasting your time lacing up a rim temporarily (and it would be highly unadvisable using a straight-pull hub, as the number of the rim holes would need to match the hub to keep everything running as designed)...go out for a run for a week until you can get the proper replacement, or borrow a front from a riding buddy. To do what you are asking is to invite wheel failure.

    Now, that said, the reason it worked in the picture you posted is because it is a regular-drilled hub. As Shiggy said, it is unlikely it would work.

  7. #7
    Nouveau Retrogrouch SuperModerator
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    24hole hub to a 36hole rim ?

    Quote Originally Posted by severthee View Post
    i was actually thinking of lacing it the same way as stock. just skipping every 3rd hole on the 36h rim. i thought it would look the same with just a little spread?
    Because the drilling is different you are changing the lacing pattern, and skipping holes may require varying spoke lengths.

    A 2-3mm difference in ERD can also be enough to need different spoke lengths.
    mtbtires.com
    The trouble with common sense is it is no longer common

  8. #8
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    thanks for the insights.

    i went ahead and just built a 32hole wheelset to scratch my itch.
    but everyone knows that tinkerers only have moments of peace.

    so i bought a 36h rim. and plotted the spokes. i realized that even though they are straight pull, they still have a degree of play. you can move them to some extent.
    now i have two options of distributing the spokes. technically im just using the same exact lacing.

    (pardon the crap in the pictures, i needed them to center the rim)

    option1
    http://farm9.staticflickr.com/8249/8...1be729fc_b.jpg
    http://farm9.staticflickr.com/8513/8...0468d67b_b.jpg

    option2
    http://farm9.staticflickr.com/8239/8...e77c44d4_b.jpg
    http://farm9.staticflickr.com/8373/8...5673b1bb_b.jpg

    side by side with the stock rim and lacing
    http://farm9.staticflickr.com/8103/8...51aeb60d_b.jpg
    http://farm9.staticflickr.com/8511/8...52cc155d_b.jpg

    which spacing/spoke distribution should work best? or it doesnt matter at all?

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