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  1. #1
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    Applying fatbike drilled rim techniques to a childs BMX

    Anyone tried this?
    My intent is to re-lace a 32h rim as a 16h and drill out every missing spoke with a 7/8" hole. (or a 36H down to 18, which is more likely what it has)

    My almost 8 year old son is tall and thin and most BMX are overkill for him. A 60lb child on a 26lb bike.
    He barely has enough power to make it up a slight incline, let alone a hill. I'm not worried about him busting it dirt jumping or something.
    Strength is not a major issue at his weight, I'm even considering making swiss cheese out of a junkyard mongoose frame just to see if it can hold it's structural integrity with 1/2-2/3 as much metal.

    That way he can have a mini pugsley just like his dad.

  2. #2
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    Quote Originally Posted by roobydoo View Post
    Anyone tried this?
    My intent is to re-lace a 32h rim as a 16h and drill out every missing spoke with a 7/8" hole. (or a 36H down to 18, which is more likely what it has)

    My almost 8 year old son is tall and thin and most BMX are overkill for him. A 60lb child on a 26lb bike.
    He barely has enough power to make it up a slight incline, let alone a hill. I'm not worried about him busting it dirt jumping or something.
    Strength is not a major issue at his weight, I'm even considering making swiss cheese out of a junkyard mongoose frame just to see if it can hold it's structural integrity with 1/2-2/3 as much metal.

    That way he can have a mini pugsley just like his dad.
    I did something similar years ago. Used a crows foot pattern to lace a 36h rim wth 18 spokes. Do it!

  3. #3
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    I should add that smaller runs are stronger by virtue of them merely being smaller. The 18 spoke 20" rim I laced for my kid's bike was plenty strong and actually the distance between spokes on thatsmall of a rim was about equal to a 32 spoke 29er.

  4. #4
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    Trials rims are often drilled as well. And they don't baby them...

  5. #5
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    Quote Originally Posted by JoeG View Post
    Trials rims are often drilled as well. And they don't baby them...
    That's what I run on the front of my Pugsley, a rear 47mm trials rim.

    looks like it could save me a fair bit of weight, if it works well I may make a habit of it on my kids bikes.

  6. #6
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    Back in the 1980s (or 1970s?) some Mongoose BMXs came with ~20mm holes between the spokes, combined with rimtapes which appeared to be alu - or at least shiny. So, it's not a new thing at all. Those old rims didn't seem noticeably less reliable than ones without holes.

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