Another wheel day (and so on).
I built a disc brake front wheel with Tni's SUB1 rim.
This rim was the last pair a customer had on reserve,
but since it's 20H and 24H with one hole count each,
I originally planned to build a rim brake wheel.
However, using Tni's LW Super hub opened up the option
to build disc brake front and rear wheels,
so I ended up building a disc brake wheel instead.
LW Super 20H, half-CX Sprint with forced left-right 2-cross lacing.
I'll solder the spokes later.
If I had gone with all CX-RAY purely for lightness,
the calculation shows it would be about 10.44g heavier.
Whether I can actually feel the difference of 10.44g in the spokes portion of the wheel is questionable,
but the difference in stiffness between half-CX Sprint and all CX-RAY should be noticeable,
so I went with half-CX Sprint.
The 10.44g difference is rounded down past the third decimal place,
and if I note that the specific gravity of the spokes is calculated as 64.5% for CX-RAY
and 78% for CX Sprint,
that's essentially describing spoke length.
A 14-gauge plain spoke at 1mm weighs 0.0257g,
and with 10 spokes, if the spoke length is L, then
L × 0.0257 × 10 × (0.78 − 0.645) = 10.44
When I solve for L, it doesn't come out to an integer,
but that's because I rounded down after 10.44,
which means the integer you get by rounding up the first decimal place of L's result
is the answer.
The rounding-up difference is approximately 0.1mm.
The SUB1 complete wheels come in both rim brake and
disc brake versions,
and on the disc brake version,
the rim sidewall doesn't have the Campagnolo AC3-like finish,
but the rims sold individually do have
the AC3-like finish in the brake zone.
I built the wheel following the same proper left-right orientation
as if I were building a rim brake wheel.
The nipple colors are only green in the range of the image above,
I've arranged them in rainbow order (VAS arrangement).
I built a disc brake front wheel with Tni's SUB1 rim.
This rim was the last pair a customer had on reserve,
but since it's 20H and 24H with one hole count each,
I originally planned to build a rim brake wheel.
However, using Tni's LW Super hub opened up the option
to build disc brake front and rear wheels,
so I ended up building a disc brake wheel instead.
LW Super 20H, half-CX Sprint with forced left-right 2-cross lacing.
I'll solder the spokes later.
If I had gone with all CX-RAY purely for lightness,
the calculation shows it would be about 10.44g heavier.
Whether I can actually feel the difference of 10.44g in the spokes portion of the wheel is questionable,
but the difference in stiffness between half-CX Sprint and all CX-RAY should be noticeable,
so I went with half-CX Sprint.
The 10.44g difference is rounded down past the third decimal place,
and if I note that the specific gravity of the spokes is calculated as 64.5% for CX-RAY
and 78% for CX Sprint,
that's essentially describing spoke length.
A 14-gauge plain spoke at 1mm weighs 0.0257g,
and with 10 spokes, if the spoke length is L, then
L × 0.0257 × 10 × (0.78 − 0.645) = 10.44
When I solve for L, it doesn't come out to an integer,
but that's because I rounded down after 10.44,
which means the integer you get by rounding up the first decimal place of L's result
is the answer.
The rounding-up difference is approximately 0.1mm.
The SUB1 complete wheels come in both rim brake and
disc brake versions,
and on the disc brake version,
the rim sidewall doesn't have the Campagnolo AC3-like finish,
but the rims sold individually do have
the AC3-like finish in the brake zone.
I built the wheel following the same proper left-right orientation
as if I were building a rim brake wheel.
The nipple colors are only green in the range of the image above,
I've arranged them in rainbow order (VAS arrangement).