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Spoke Length for SA AW hub and Sun CR - 18 590mm Rim

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Spoke Length for SA AW hub and Sun CR - 18 590mm Rim

Old 10-09-12, 10:51 AM
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canflyboy 
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Spoke Length for SA AW hub and Sun CR - 18 590mm Rim

I'm about to order a rim for my Raleigh Sports to replace the badly pitted rear rim. I'm going with the Sun CR-18 and would like to re-spoke the wheel at the same time. I'd like to order both spokes and rim at the same time rather than have to wait, measure, order, wait and then build. Would anyone happen to have the spoke lengths handy for the SA AW hub and Sun CR-18 590mm Rim - 36 spoke - 3 cross


Thanks

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Old 10-09-12, 11:01 AM
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rhm
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274 for 36 spokes (3-x)
or
271 for 40 (3x)
or
281 for 40 (4x)

But don't take my word for it. I have screwed this up many times. Try this calculator.
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Old 10-09-12, 02:12 PM
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gna
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I believe rhm has the numbers correct. If you want to replace the spokes, spoke washers will help. See Bikesmith Design SA Tips
You can reuse spokes from raised center Raleigh rims if they are in good shape, though.
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Old 10-09-12, 02:18 PM
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I do not know about Sun, but a lot of rims vary from batch to batch and
are not always true to the advertised ERD. I know I've personally had
this experience with ALEX rims, and I think Mr Bunny also mentioned it
once upon a time.

Do what you want, but were it me, I'd wait for the rims to arrive and
measure the ERD myself. This is the calculator I use wheelpro.co.uk
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Old 10-09-12, 02:41 PM
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Originally Posted by 3alarmer View Post
I do not know about Sun, but a lot of rims vary from batch to batch and
are not always true to the advertised ERD. I know I've personally had this experience with ALEX rims, and I think Mr Bunny also mentioned it once upon a time.
FWIW, I built 3 pairs (6 wheels) this spring using CR-18 590 ERD rims and the calculated lengths worked out fine.
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Old 10-09-12, 03:06 PM
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I just reuse the spokes that are already on the bike. Haven't had a problem, and I've done this with several 3-speeds.
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