Help!
I have a 40 spoke rear wheel of a tandem bicycle. I'm replacing the rim, which is bent after hitting a big pothole at high speed. It's a velocity fusion 40-spoke rim. This is the first wheel that I've built, though I've wanted to try this for a long time. (I'm using Sheldon Brown's website as my reference guide). It is a triple cross spoke pattern.
The problem I'm experiencing is that half of the spokes seem like they are too long! the problem spokes are the leading spokes from the outside of the flange on the drive side (shown in dark blue in Sheldon's diagram) and the trailing spokes from the inside of the flange on the non-drive side (shown in Yellow). When you go along the outside of the rim the pattern is: 2-spokes of the right length, 2 that seem to short, 2, 2, 2, all the way around.
I've checked 1000 times and the sequence of spokes on my wheel is the same as his diagram (trailing drive side, trailing non-drive, leading drive side, leading non-drive, in that order repeating itself the whole way around) and the pattern just LOOKS right.
BUT... Something's wrong.
The spokes are the proper length (again, I'm using the same spokes as before) the rim is the right size (700c). and I am TOTALLY BAFFLED.
Help?
I have a 40 spoke rear wheel of a tandem bicycle. I'm replacing the rim, which is bent after hitting a big pothole at high speed. It's a velocity fusion 40-spoke rim. This is the first wheel that I've built, though I've wanted to try this for a long time. (I'm using Sheldon Brown's website as my reference guide). It is a triple cross spoke pattern.
The problem I'm experiencing is that half of the spokes seem like they are too long! the problem spokes are the leading spokes from the outside of the flange on the drive side (shown in dark blue in Sheldon's diagram) and the trailing spokes from the inside of the flange on the non-drive side (shown in Yellow). When you go along the outside of the rim the pattern is: 2-spokes of the right length, 2 that seem to short, 2, 2, 2, all the way around.
I've checked 1000 times and the sequence of spokes on my wheel is the same as his diagram (trailing drive side, trailing non-drive, leading drive side, leading non-drive, in that order repeating itself the whole way around) and the pattern just LOOKS right.
BUT... Something's wrong.
The spokes are the proper length (again, I'm using the same spokes as before) the rim is the right size (700c). and I am TOTALLY BAFFLED.
Help?