Today it's wheels again (and so on).
A customer brought in a rear wheel built with a 38mm high-carbon WO rim (tubeless incompatible).
Novatec FS522 straight-pull hub, 24H.
Built with forced 2-cross lacing on both sides, using Pillar black square aero spokes.
The non-drive side is loose, and out-of-true develops with each ride, so they requested a rebuild.
↑Drive side too
↑Non-drive side too
The final cross isn't woven on either side.
Also, there's no particular reason it had to be, but it was built with 16mm long nipples.
The rim had shifted toward the non-drive side.
The drive side is pretty tensioned up—not quite at a dead end, but close—and with thread-lock compound still holding, turning the nipple on these flat spokes without stripping would have been quite difficult.
Besides, for truing, it's easiest to tighten in the direction of the low-tension non-drive side, so over time the rim likely shifted non-drive.Considering the non-drive side is tensioned this hard from dead-center and yet still feels loose (as noted, the drive side can barely be tightened further), with a high-low flange hub and forced symmetrical lacing with equal spoke lengths on both sides, there's just no way around it.
The same would be true even if both sides were CX-RAY for weight savings.
I carefully loosened everything starting from the valve hole, leaving only the final-cross spokes on both sides—four spokes in one pair that I never touched the nipples on.
↑Non-drive side
↑Drive side
↑Non-drive side
↑Drive side
I was pretty sure before disassembling when I shined a light inside the rim, but they cut corners by using the same spoke length on both sides.
Also, there are marks from when the wheel was initially assembled—someone pressed a flat-head bit into the nipple slots and turned them.
I do the same thing, but I don't leave marks like that.
All 280mm. With 169.3g ÷ 24 spokes ÷ 280mm, the weight per mm is 0.0251934...g. Since I define 100% spoke gravity as 0.0257g, the spoke gravity ratio comes to 0.980287...%, so 98% is fine.
Initially I planned to reuse the spokes and thought that even with equal-length lacing on both sides, weaving the non-drive side and tying off would manage, but I decided to go with CX-Sprint and asymmetrical lacing instead.
The 12 leftover Pillar spokes can serve as drive-side spares.
Now I can drop the chain inside the sprocket to my heart's content!
Rebuilt.
I used black CX-Sprint on the non-drive side.
The final cross is woven on both sides.
I'll tie it off later.
The nipples are basically black aluminum, but per the customer's request, I used red aluminum nipples on both sides of the valve hole.
Both are DT 12mm length.
A customer brought in a rear wheel built with a 38mm high-carbon WO rim (tubeless incompatible).
Novatec FS522 straight-pull hub, 24H.
Built with forced 2-cross lacing on both sides, using Pillar black square aero spokes.
The non-drive side is loose, and out-of-true develops with each ride, so they requested a rebuild.
↑Drive side too
↑Non-drive side too
The final cross isn't woven on either side.
Also, there's no particular reason it had to be, but it was built with 16mm long nipples.
The rim had shifted toward the non-drive side.
The drive side is pretty tensioned up—not quite at a dead end, but close—and with thread-lock compound still holding, turning the nipple on these flat spokes without stripping would have been quite difficult.
Besides, for truing, it's easiest to tighten in the direction of the low-tension non-drive side, so over time the rim likely shifted non-drive.Considering the non-drive side is tensioned this hard from dead-center and yet still feels loose (as noted, the drive side can barely be tightened further), with a high-low flange hub and forced symmetrical lacing with equal spoke lengths on both sides, there's just no way around it.
The same would be true even if both sides were CX-RAY for weight savings.
I carefully loosened everything starting from the valve hole, leaving only the final-cross spokes on both sides—four spokes in one pair that I never touched the nipples on.
↑Non-drive side
↑Drive side
↑Non-drive side
↑Drive side
I was pretty sure before disassembling when I shined a light inside the rim, but they cut corners by using the same spoke length on both sides.
Also, there are marks from when the wheel was initially assembled—someone pressed a flat-head bit into the nipple slots and turned them.
I do the same thing, but I don't leave marks like that.
All 280mm. With 169.3g ÷ 24 spokes ÷ 280mm, the weight per mm is 0.0251934...g. Since I define 100% spoke gravity as 0.0257g, the spoke gravity ratio comes to 0.980287...%, so 98% is fine.
Initially I planned to reuse the spokes and thought that even with equal-length lacing on both sides, weaving the non-drive side and tying off would manage, but I decided to go with CX-Sprint and asymmetrical lacing instead.
The 12 leftover Pillar spokes can serve as drive-side spares.
Now I can drop the chain inside the sprocket to my heart's content!
Rebuilt.
I used black CX-Sprint on the non-drive side.
The final cross is woven on both sides.
I'll tie it off later.
The nipples are basically black aluminum, but per the customer's request, I used red aluminum nipples on both sides of the valve hole.
Both are DT 12mm length.