Wheels again today (and so on).
I received a Shimano WH-RS300 rear wheel from a customer.
Straight gauge spoke hub, 20H
It has same-diameter aero spokes on both sides with a 2-cross lacing pattern, but
The customer doesn't see it as a wheel—
they only see it as
"a 20H rear hub that can use 11-speed sprockets."
Since they don't need the disassembled rim or spokes,
their request is to use this hub to build
the rear wheel for the Nomu Lab Wheel #1.
I disassembled the wheel.
The image above shows the original black spokes and silver CX-RAY.
For this rear wheel, the spoke length was 304mm on both sides—the same length—but
there's a normal amount of flange offset for a rear wheel,
and with high-low flanges, there's no way the spokes should be the same length.
Like Campagnolo complete wheels with steel spokes,
I thought maybe these had extra-long thread sections compared to generic spokes
to absorb the left-right spoke length difference through thread length alone,
but it turned out the thread length was basically the same as generic spokes.
That's just sloppy.
Based on my calculations using the hub measurements,
the difference came out to about 2.5mm.
When you round this to whole millimeters,
depending on the rim inner diameter, you might get a 2mm difference left-to-right,
or sometimes it gets judged as a 3mm difference.
The original rim has quite a bit of offset,
so that could cover about 1mm of spoke length difference at most,
but not enough to cover 2mm or 3mm.
In fact, when I built it with the Nomu Lab Wheel #1 rim,
I changed the length by 2mm left and right.
Since I'm not invoking the summoning incantation for that thing,
it won't stay in the archives,
but the weight of this rim might actually have
pretty high value as blog material.
It's built.
On the freewheel side, I used #14 Leader straight gauge
(though #14 Champion straight gauge would have worked too),
and on the non-freewheel side, CX Sprint straight gauge.
I'll do the truing later.
I received a Shimano WH-RS300 rear wheel from a customer.
Straight gauge spoke hub, 20H
It has same-diameter aero spokes on both sides with a 2-cross lacing pattern, but
The customer doesn't see it as a wheel—
they only see it as
"a 20H rear hub that can use 11-speed sprockets."
Since they don't need the disassembled rim or spokes,
their request is to use this hub to build
the rear wheel for the Nomu Lab Wheel #1.
I disassembled the wheel.
The image above shows the original black spokes and silver CX-RAY.
For this rear wheel, the spoke length was 304mm on both sides—the same length—but
there's a normal amount of flange offset for a rear wheel,
and with high-low flanges, there's no way the spokes should be the same length.
Like Campagnolo complete wheels with steel spokes,
I thought maybe these had extra-long thread sections compared to generic spokes
to absorb the left-right spoke length difference through thread length alone,
but it turned out the thread length was basically the same as generic spokes.
That's just sloppy.
Based on my calculations using the hub measurements,
the difference came out to about 2.5mm.
When you round this to whole millimeters,
depending on the rim inner diameter, you might get a 2mm difference left-to-right,
or sometimes it gets judged as a 3mm difference.
The original rim has quite a bit of offset,
so that could cover about 1mm of spoke length difference at most,
but not enough to cover 2mm or 3mm.
In fact, when I built it with the Nomu Lab Wheel #1 rim,
I changed the length by 2mm left and right.
Since I'm not invoking the summoning incantation for that thing,
it won't stay in the archives,
but the weight of this rim might actually have
pretty high value as blog material.
It's built.
On the freewheel side, I used #14 Leader straight gauge
(though #14 Champion straight gauge would have worked too),
and on the non-freewheel side, CX Sprint straight gauge.
I'll do the truing later.