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spoke length size 289.2...should i size down?

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spoke length size 289.2...should i size down?

Old 04-07-09, 08:44 PM
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fatigoworld
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spoke length size 289.2...should i size down?

did my spoke length calculations and they are this...

rear drive side - 289.2

rear non drive side - 292.6

front - 294.6

so should i use....289, 292, 294

or....288, 292, 294

or whatever else you can reccomend, this is my first build and i am using DT Competition double butted 14 15 spokes....
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Old 04-07-09, 09:21 PM
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Sizing down is fine. Go with the closest that you can find. I prefer to round down. There is usually plenty of thread to not really have to worry about any of this. BTW - if you think these guys are cutting thier spoke to within .1mm then....well...then....you need to spend some time in manufacturing.
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Old 04-07-09, 09:25 PM
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^ +1 If you want them exact... You can order CXRays from Alchemy Bicycle Works and they will cut and roll them for you.
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Old 04-07-09, 10:53 PM
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i didnt imply that i wanted them exact. i was asking that for the 289.2.....should i use 289 or 288?

ive read that the spokes can stretch, i dont want to go with 289 and run out of thread after stretching, or if i go with 288 it may be too short...
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Old 04-08-09, 12:41 AM
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Originally Posted by fatigoworld View Post
ive read that the spokes can stretch, i dont want to go with 289 and run out of thread after stretching, or if i go with 288 it may be too short...
Go with the shorter length. There's nothing more annoying than running out of threads before you can bring a wheel up to proper tension. Then the only solution is to unlace and replace with shorter spokes (or be satisfied with under-tensioned wheels).

Spokes won't stretch over time, but they definitely elongate as you increase the tension on them. Especially the thin ones.
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