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Old 11-30-19 | 10:17 AM
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WizardOfBoz
Generally bewildered
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Joined: Aug 2015
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From: Eastern PA, USA

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Originally Posted by Mad Honk
Wiz,
I have seen wheels with spokes tied, spokes twisted into each other, and straight cross patterns of all configurations that work well. But there are always constants about the wheels. Even tensions across both sides of the wheel. Regardless of the pattern chosen the tension to the hub to rim needs to be pretty close to have a wheel that works. When the tension between both sides of the rim is different , it will result n a wheel that does not track correctly. HTH, MH
Agree, MH. Breaking the force dimensions into the three parts was my attempt to show that the forces have to be the same in all directions: lateral (the sum of the each tension times the sine of the spoke's lateral angle with the center plane of the rim), the tangential (the sum of each spokes force vector times the cosine of the angle of the spoke with a wheel tangent measured viewing the wheel from the side) and the radial (harder to express, but basically, the idea is that the rim has to be pulled to center by forces that sum to zero). In addition to the overall forces summing to zero, you have the local effects. With the spokes being different tensions, and of necessity being in a batter of higher higher lower lower tension, you can get the tangential local forces pretty much equaled out, and the lateral (truing) forces equaled out, but the pattern means that every 60° one has a repeating patter where the rim is closer to the hub (the two spokes that are high high), then farther from the hub (the low low spokes).

Since others have done this, and also have done some pretty wild and silly things that you mention, and I assume that they have worked, I suspect that torger will be ok. Though keeping those spoke lengths straight would probably confuse me. But pretty soon I'll be consigned to the Wisconsin Home for the Bewildered, so I suspect torger has an advantage. I will say, though, that the weirdnesses (twists, different spoke lengths, skipping holes in the hub) are probably suboptimal in some sense. torger has made a case that other criteria override this aspect of non-optimality. As I say, I think he'll be ok.
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Last edited by WizardOfBoz; 11-30-19 at 10:21 AM.
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