Today it's wheels again (and so on).
But before that.
I received front and rear wheels with carbon WO rims from a customer.
I'll be rebuilding the rear wheel anyway,
but the specs are determined by the front wheel service, so I'll start with that.
The front wheel apparently has both lateral and radial runout plus centering issues,
with particularly bad radial runout according to the customer.
↑The rim can apparently be tensioned up to 180 kgf,
but I definitely won't tension it that much.
(Other parts can't handle that kind of tension anyway.)
The front hub is from the same maker as that mysterious super-wide flange hub,
but with normal flange width,
and it's built with black CX-RAY spokes in reverse radial lacing.
When I put the center gauge against the rim on the loose side...
↑There's this much gap on the other side.
It's quite off-center.
But what was even worse, just as the customer said, was the radial runout—
I worked it in aggressively and got it nice and clean.
The spoke tension was already quite tight from the start,
but I worked with a tendency to increase it, so the spoke tension went up slightly.
The customer said that if this work required disassembling the wheel
or replacing spokes, they wanted to switch to silver CX-RAY,
but if we could reuse them as-is, that was fine—
and we managed to do it without replacing spokes.
Next up is the rear wheel.
A 24-hole rear hub that looks kind of like a Leaf hub,
built with all-black CX-RAY in 4/6 lacing.
The customer says it rubs on the left chainstay when they rock the bike,
but since the freewheel side is tensioned very tight,
I can't increase the non-freewheel side tension any further.
I usually write disparagingly about non-freewheel side radial lacing,
but this rear wheel was reasonably well tensioned.
I mean, for this lacing pattern.
When I disassembled the rear wheel,
looking at how the spokes bite into the hub flanges—
↑Freewheel side radial
↑Freewheel side reverse
↑Non-freewheel side
You can see the non-freewheel side doesn't bite in as much.
There are differences in the angle of incidence to the rim,
but generally speaking, spoke tension correlates with bite depth.
I rebuilt it.
Since the front wheel has black spokes, I used black spokes for the rear too.
I did 24-hole semi-competition 4/6 lacing with cross connections.
Before rebuild
After rebuild
The deformation when squeezing the spokes from both sides has decreased dramatically.
The freewheel side deformation is roughly the same,
but the non-freewheel side deformation has dropped significantly.
When the lateral deformation of the non-freewheel side spokes decreases,
it becomes much less likely to have left chainstay rub.
But before that.
I received front and rear wheels with carbon WO rims from a customer.
I'll be rebuilding the rear wheel anyway,
but the specs are determined by the front wheel service, so I'll start with that.
The front wheel apparently has both lateral and radial runout plus centering issues,
with particularly bad radial runout according to the customer.
↑The rim can apparently be tensioned up to 180 kgf,
but I definitely won't tension it that much.
(Other parts can't handle that kind of tension anyway.)
The front hub is from the same maker as that mysterious super-wide flange hub,
but with normal flange width,
and it's built with black CX-RAY spokes in reverse radial lacing.
When I put the center gauge against the rim on the loose side...
↑There's this much gap on the other side.
It's quite off-center.
But what was even worse, just as the customer said, was the radial runout—
I worked it in aggressively and got it nice and clean.
The spoke tension was already quite tight from the start,
but I worked with a tendency to increase it, so the spoke tension went up slightly.
The customer said that if this work required disassembling the wheel
or replacing spokes, they wanted to switch to silver CX-RAY,
but if we could reuse them as-is, that was fine—
and we managed to do it without replacing spokes.
Next up is the rear wheel.
A 24-hole rear hub that looks kind of like a Leaf hub,
built with all-black CX-RAY in 4/6 lacing.
The customer says it rubs on the left chainstay when they rock the bike,
but since the freewheel side is tensioned very tight,
I can't increase the non-freewheel side tension any further.
I usually write disparagingly about non-freewheel side radial lacing,
but this rear wheel was reasonably well tensioned.
I mean, for this lacing pattern.
When I disassembled the rear wheel,
looking at how the spokes bite into the hub flanges—
↑Freewheel side radial
↑Freewheel side reverse
↑Non-freewheel side
You can see the non-freewheel side doesn't bite in as much.
There are differences in the angle of incidence to the rim,
but generally speaking, spoke tension correlates with bite depth.
I rebuilt it.
Since the front wheel has black spokes, I used black spokes for the rear too.
I did 24-hole semi-competition 4/6 lacing with cross connections.
Before rebuild
After rebuild
The deformation when squeezing the spokes from both sides has decreased dramatically.
The freewheel side deformation is roughly the same,
but the non-freewheel side deformation has dropped significantly.
When the lateral deformation of the non-freewheel side spokes decreases,
it becomes much less likely to have left chainstay rub.