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21” to 19” rim using the 21” hub.

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Old Jul 21, 2018 | 04:42 PM
  #1  
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Default 21” to 19” rim using the 21” hub.

Hello all,

Hoping someone can provide insight to my current dilemma. I have a 2006 Sportster custom, I recently decided to do a wheel swap from the stock 21” to a 19”. The question I have is if I can use my hub from the 21” and lace it using the 19” rim and spokes? One thing I have noticed is that the hub from the 21” is a staggered eyelet patten, whereas the 19” has an in-line pattern. Does the 21” staggering affect the pattern layout? Both the 19” and 21” use 40 spokes. I tried to lace the 21” staggered pattern hub to the 19” rim with the 19” spokes but when I do so the threads max out on the outer spokes, which then doesn’t allow them to engage the rim.
Is this just a matter of buying new spokes or should the ones from the 19” rim work? I assumed they would but maybe the staggered pattern of the 21” hub plays a role?

Any advice helps!

- Hunter


21” diagram showing pattern of hub


21” rim with hub (notice staggered pattern) also 40 spokes same pattern.


19” wheel before I disassembled (notice the in-line pattern on hub) same spoke pattern with 40.
 
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Old Jul 21, 2018 | 09:16 PM
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i'm definitely not the expert on lacing hubs, but neither my 2003 custom with a 21'' front wheel, or my 2002 hugger with 19'' front wheel had that spoke pattern..
 
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Old Jul 21, 2018 | 09:35 PM
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Odd, where they 40 spoke? The pictures I included are factory HD lacing with 40 spokes. Would you mind sending pictures and counting the spokes to double check?

- Hunter
 
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Old Jul 22, 2018 | 06:49 AM
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i would, but i don't have either of them any more...

well, maybe they were. pulled up a couple of pics online and they appear to be laced that way. i guess the old memory is fading



 

Last edited by skratch; Jul 22, 2018 at 06:55 AM.
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