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Radial truing

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Radial truing

Old 09-17-23, 08:33 AM
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Originally Posted by Dan Burkhart
The fact remains that adjusting for radial true on a dished wheel by turning the nipples on both sides equally will introduce a lateral out of true to the non drive side which then must be dealt with by truing to the drive side. I try to deal with it in a way that if anything will bias the area to the drive side and then correct to the non drive.
Not in my experience. Or, rather, itís not something that causes much problem. Yes, you might have to go back after a radial truing to adjust the lateral true but adjusting the lateral true wonít reintroduced the radial truing problem. Everything Iíve read in addition to the way that I take out a problem with roundness is similar to this from Sheldon Brown

For vertical truing, find the highest high spot on the rim. If the center of this high spot is between two spokes, tighten each of them 1/2 turn. If the high spot is centered over one spoke, tighten that spoke one full turn, and each of the two spokes next to it that go to the other flange, 1/2 turn. It takes a larger adjustment to affect the vertical truing than the horizontal truing. Vertical truing should usually be done by tightening spokes, gradually building up the tension in the wheel as you go along.
The main take away is the bolded part. Adjusting the lateral true is a relatively minor adjustment compared to the radial true. Itís easy to go back and clean up any introduced lateral true after a radial adjustment.
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Old 09-17-23, 02:12 PM
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Originally Posted by cyccommute
You canít put tension out of mind. If you are going to talk about vectors, you have to talk about tension. A vector is a defined as a quantity will magnitude and direction. ďTensionĒ is a force and it has direction from the hub to the rim......
I think you missed my point. It's not about semantics but a shift in focus from inputs to results.

You and others are arguing about inputs, ie. Whether nipples on both sides need to turned equally or not while I'm suggesting that observing where the rim ends up is easier than obsessing how exactly it got there.

Back to the piano. It's not about how far you pull the rope, how much it stretches, or how much the jib sags. It's simply a matter of watching the piano, and stopping when it's at the right height.

When teaching wheel building and truing, I explain that spokes pull both in and across, and in dished wheels the left side pulls across more than the right. After that students focused on position quickly adapt as they start truing.

But I'm not going to argue. Folks can read all the posts, learn a bit from each and get a sense of the big picture on their own.
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