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  1. #1
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    20 inch Mtb from Tuning Pedals

    Hello

    My name is Ronny from Tuning Pedals in Germany. I have a little Onlineshop and I love to build kids bikes.
    Here some fotos hope you like it.

    This bike weight 7800 h include Pedals.
    Comes with xt 10 speed.






    The next project weight 7440 g and comes also with a xt 10 speed








    And this will be the next one




  2. #2
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    Sehr Gut Ronny.

    You can save a bit more weight by using even fewer spokes. Even on a kids 24" bike, the wheels I have built with 12 spokes (front) and 18 spokes (rear) have been completely reliably. see thread; Kid specific Wheel Build for 40lb rider NEED HELP

    What are the rigid forks you are now using, what do they weigh?
    For a lightweight suspension fork, it is fairly easy to shorten an early 1990''s manitou to fit 20" wheels, weighing around 1100gr. See post #7 on thread Suspension fork shortening

  3. #3
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    Hello

    I take 20 and 24 spokes. I use novatec superlight hubs. This is a good compromise.
    The fork is a OEM and weight include painting 600 g. It's OK.

    I think I can save 500 - 1000 G but this need too much money

  4. #4
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    VERY nice looking bikes Ronny. What do you charge for one of these?

  5. #5
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    Too much 😅.

  6. #6
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    Quote Originally Posted by zzeuzz View Post
    Hello

    I take 20 and 24 spokes. I use novatec superlight hubs. This is a good compromise.
    The fork is a OEM and weight include painting 600 g. It's OK.

    I think I can save 500 - 1000 G but this need too much money
    Cheapest weight loss to be found is from leaving off excess parts, not from buying lighter parts.

    For a kids 20" front wheel, I think you could safely and reliably build the wheel by lacing with only 10 spokes (requires radial lacing pattern since 5 spokes per side is an odd number). My kids have ridden 12 spoke 20", 24" and now 26" front wheels with no problems, I have test ridden the 12 spoke front 26" wheel and it held up fine under my adult weight. Smaller rim diameter of a 20" wheel makes it much stronger than same spoke count on a larger wheel.

    For the rear wheel using 24 hole rims/hubs, you can easily loose half of the non-drive side spokes without sacrificing much strength, so try a 12+6=18 spoke rear wheel. The resulting increase of the spoke tension for the remaining non-drive side spokes is actually beneficial to spoke life since the metal does not stress cycle as much and fatigue as fast.
    Loosing total of 16 spokes should save around 100gr of free rotational weight.

  7. #7
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    This is correct. But I don't like this 😀

  8. #8
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    The girls bike is ready. Sorry for the Bad pictures.

    20 inch Mtb from Tuning Pedals-uploadfromtaptalk1448998802156.jpg

    20 inch Mtb from Tuning Pedals-uploadfromtaptalk1448998953128.jpg



    Ronny

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