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-   -   Can I lace a 24h to a 32h hub? (https://www.bikeforums.net/bicycle-mechanics/696048-can-i-lace-24h-32h-hub.html)

devalious 11-18-10 09:26 AM

Can I lace a 24h to a 32h hub?
 
Can I lace a 24h to a 32h hub? I'm trying to convert my single speed to fixed.

Thanks

Steev 11-18-10 09:47 AM

It gets very complex. You will end up with multiple spoke lengths. Better to get matching parts. This question is much better asked in the mechanics forum.

Scrodzilla 11-18-10 09:54 AM

Moving to mechanics.

fietsbob 11-18-10 10:32 AM

Specialty racing time trials? forces in stopping a fixed gear bike are high on the street,
sudden stops to not be killed in a collision, a prime example
I'd get a common 32 hole rim for the rear,

sell that rim to the next guy who will be asking will A fit B soon.

maybe that's where this rim came from .. someone else asked a similar question a day or 2 ago.

AEO 11-18-10 08:40 PM

you can lace it if it the hub has uneven dishing, but if you want to lace it to a hub with even dishing on each side, then lace it up to a 36h.

you use 2.19x, or roughly a 2 cross length with +2mm when lacing a 24h rim to a 36h hub. The spokes go in pairs with one hole skipped between pairs.

fietsbob 11-19-10 01:38 AM

Maybe as a front, not a rear , a front you can use a radial lacing skip 4 holes in the hub on each side .

Squirrelli 11-19-10 01:43 AM

Is it possible to lace it to a 48h hub?

Kimmo 11-19-10 04:29 AM


Originally Posted by AEO (Post 11810067)
you can lace it if it the hub has uneven dishing, but if you want to lace it to a hub with even dishing on each side, then lace it up to a 36h.

Could you explain the reasoning there?

zzyzx_xyzzy 11-19-10 05:53 AM

for a rear wheel, if the rim doesn't have a lot of difference between left and right spoke holes, you could try triplet lacing, 16 spokes on right side and 8 on left. In theory you end up with more even spoke tension but less lateral stiffness.

AEO 11-19-10 11:03 AM


Originally Posted by Kimmo (Post 11811356)
Could you explain the reasoning there?

if there's a lot of dishing on one side, then the spoke tension will be low on the opposite side, so you can take out half the spokes, 32h/2/2= 8 to bring up the non drive side to adequate tension.

When done with a road hub, it's about 100% drive side, 85% NDS spoke tension.

AEO 11-19-10 11:09 AM


Originally Posted by Vixtor (Post 11811227)
Is it possible to lace it to a 48h hub?

It is, but you'll need to lace it radially or use a few different lengths.

360/(48/2) = 15. So the spoke holes on a 48h hub will be 15deg apart on each side with a 7.5deg offset between the two sides.
360/(24/2) = 30. So the spoke holes on a 24h hub will be 30deg apart on each side with a 15deg offset between the two sides.

What will happen is that ONE side of a 48h hub will match up perfectly, BUT the opposite side will be be off by 7.5deg and give you all sorts of headaches.


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