Originally Posted by
noglider
Very impressive. How did you calculate the spoke lengths?
I didn't. Spoke length depends on the rim and the number of crosses, which I can't predict. Use one of the many spoke calculator programs to figure out the base spoke size. I drew the picture and measured the distance between the expected hole and the existing hole. My whole point is that this is a cave man approach to a problem that many people would be inclined to overthink. My brain hurts just thinking about it. So I didn't.
Originally Posted by
JohnDThompson
Have you tried looking for 40h rims in tandem-oriented shops
?
Yes; as I say, I much prefer to get a matching pair of rims with the correct number of spokes. And I've done pretty well. 40h rims are out there, and you can find them. But that's not what this thread is about.
Originally Posted by
pastorbobnlnh
My only suggestion would be to add the directions you used to begin this thread to the PDF and to specify whether this is for a 3X or 4X pattern (or that it doesn't matter).
Ha, you know, I don't think I checked! Between 3x and 4x I don't think it matters. It's really a question of the angle at which the spoke reaches the flange, with smaller numbers of crosses, the discrepancy will be greater.