Another day of wheel building (and so on).
A customer brought in an Araya Aero 4 rim for me to work with.
You really do find these things if you look in the right places.
I have the same rim myself, but mine are 24H and 28H.
I definitely don't have any in this hole count.
The rear hub is a PowerTap PRO that I have on hand.
Just to be clear, it's brand new.
And just to be extra clear,
it doesn't come to customers like this (obviously).
It's already been through something, but let's not worry about that.
Got the rear wheel built.
Spokes are half-comp, laced 4-cross.
Couldn't do 8-cross.
Since there's no way around it, I'll mention it:
315mm spokes are required.
With radial lacing, spoke length (the length component when viewed from the side)
is simply determined by subtracting the hub flange diameter from the rim height.
The rim height and hub flange diameter are effectively equivalent values for spoke length calculation.
With tangent lacing, things change.
As the hub flange diameter approaches zero, the spoke path gets closer to radial,
and when it reaches zero it becomes radial—
but it's the inverse here.
With large flanges, the spokes actually end up longer.
The condition for shorter spokes with radial lacing is
"high rim / large flange,"
but with tangent lacing it's
"high rim / small flange."
That said, the main reason I couldn't lace the non-drive side in 8-cross this time
wasn't really the hub's flange diameter—it was the Aero 4's inner rim diameter.
When I checked, even if it were a G3 hub (slightly smaller flange than the PRO hub),
the required spokes would be unobtainable lengths.
Front wheel's done too.
Using the customer's Tni Wing hub
with the CX-RAY in inpoke radial lacing.
A customer brought in an Araya Aero 4 rim for me to work with.
You really do find these things if you look in the right places.
I have the same rim myself, but mine are 24H and 28H.
I definitely don't have any in this hole count.
The rear hub is a PowerTap PRO that I have on hand.
Just to be clear, it's brand new.
And just to be extra clear,
it doesn't come to customers like this (obviously).
It's already been through something, but let's not worry about that.
Got the rear wheel built.
Spokes are half-comp, laced 4-cross.
Couldn't do 8-cross.
Since there's no way around it, I'll mention it:
315mm spokes are required.
With radial lacing, spoke length (the length component when viewed from the side)
is simply determined by subtracting the hub flange diameter from the rim height.
The rim height and hub flange diameter are effectively equivalent values for spoke length calculation.
With tangent lacing, things change.
As the hub flange diameter approaches zero, the spoke path gets closer to radial,
and when it reaches zero it becomes radial—
but it's the inverse here.
With large flanges, the spokes actually end up longer.
The condition for shorter spokes with radial lacing is
"high rim / large flange,"
but with tangent lacing it's
"high rim / small flange."
That said, the main reason I couldn't lace the non-drive side in 8-cross this time
wasn't really the hub's flange diameter—it was the Aero 4's inner rim diameter.
When I checked, even if it were a G3 hub (slightly smaller flange than the PRO hub),
the required spokes would be unobtainable lengths.
Front wheel's done too.
Using the customer's Tni Wing hub
with the CX-RAY in inpoke radial lacing.