my guess is that you'll need 2 spoke lengths for each side to get it to work.
I have a feeling AEO may be right on this one...the effect of pairing holes on hubs is not the same as pairing holes on rim - because you are pairing one spoke from each side - not pairs at a time per side.
However, the effect is +/- 3.25 degrees of shift when a drive side and non-drive spoke are paired at 7.5 degrees apart.
So I should be able to add a Spokechart tab that provides 2 modified crossings to enter when calculating spoke lengths per side for a given amount of degrees.
=8-)
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Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
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4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life