Wheels again today (and so on).
Continuing from yesterday.
I built the rear wheel for my personal Nomu Lab Wheel No. 9.
Against an estimated weight of 653g, it came out to 618g,
but that's because the hub is a Tni LW Super Hub
rather than a Tni Revo Disk Hub.
The rim is 285g against the nominal 273g that was the basis for the estimate,
so if it were actually 273g,
the wheel would be 606g.
For the spokes, I actually chose a larger spoke weight ratio
(built with heavier spokes),
using 14-gauge Champion straight on the freewheel side
and CX Sprint straight on the non-freewheel side.
If I had instead used half-CX Sprint—that is,
CX Sprint on the freewheel side and CX-RAY on the non-freewheel side—
it would be as much as 31g lighter,
but on my personal wheel I deliberately chose Champion/CX Sprint instead.
If I had used all CX-RAY spokes,
it would be another 11g lighter than half-CX Sprint,
and if the rim were actually 273g,
that would be 618−12−31−11 = 564g.
If you're fine with just a wheel that feels light to hold,
that's an option too.
The Revo Disk Hub only has a published weight spec
for the Shimano 11-speed HG freebody version,
but the LW Super Hub comes in at 176g for Shimano 11-speed
and 168g for SRAM XDR.
This particular unit came in at 1g over the nominal value.
LW Super Hub 24H Champion/CX Sprint
46 left-right forced 2-cross lacing with spoke nipple wrench applied,
rainbow (VAS) arranged nipples.
The old ETRTO standard means "when mounted on a rim with 15mm inner width,
the tire will be the width as marked."
Under the new ETRTO standard,
the rim inner width baseline changed to 19mm.
The Nomu Lab Wheel No. 9 rim has an inner width of
23.5mm, so it's wider than the old or new ETRTO
standards. Against that, I mounted a Continental Grand Prix 5000
tubular tire (which should be old ETRTO) on the front wheel,
and at 5 psi the tire's maximum width measured 29.5mm in actual testing.
The rear wheel has a Grand Prix 5000 S-TR tubular tire
(new ETRTO) at 5 psi,
and the tire's maximum width measured 29.7mm in actual testing.
For some reason they came out almost exactly the same width.
Continuing from yesterday.
I built the rear wheel for my personal Nomu Lab Wheel No. 9.
Against an estimated weight of 653g, it came out to 618g,
but that's because the hub is a Tni LW Super Hub
rather than a Tni Revo Disk Hub.
The rim is 285g against the nominal 273g that was the basis for the estimate,
so if it were actually 273g,
the wheel would be 606g.
For the spokes, I actually chose a larger spoke weight ratio
(built with heavier spokes),
using 14-gauge Champion straight on the freewheel side
and CX Sprint straight on the non-freewheel side.
If I had instead used half-CX Sprint—that is,
CX Sprint on the freewheel side and CX-RAY on the non-freewheel side—
it would be as much as 31g lighter,
but on my personal wheel I deliberately chose Champion/CX Sprint instead.
If I had used all CX-RAY spokes,
it would be another 11g lighter than half-CX Sprint,
and if the rim were actually 273g,
that would be 618−12−31−11 = 564g.
If you're fine with just a wheel that feels light to hold,
that's an option too.
The Revo Disk Hub only has a published weight spec
for the Shimano 11-speed HG freebody version,
but the LW Super Hub comes in at 176g for Shimano 11-speed
and 168g for SRAM XDR.
This particular unit came in at 1g over the nominal value.
LW Super Hub 24H Champion/CX Sprint
46 left-right forced 2-cross lacing with spoke nipple wrench applied,
rainbow (VAS) arranged nipples.
The old ETRTO standard means "when mounted on a rim with 15mm inner width,
the tire will be the width as marked."
Under the new ETRTO standard,
the rim inner width baseline changed to 19mm.
The Nomu Lab Wheel No. 9 rim has an inner width of
23.5mm, so it's wider than the old or new ETRTO
standards. Against that, I mounted a Continental Grand Prix 5000
tubular tire (which should be old ETRTO) on the front wheel,
and at 5 psi the tire's maximum width measured 29.5mm in actual testing.
The rear wheel has a Grand Prix 5000 S-TR tubular tire
(new ETRTO) at 5 psi,
and the tire's maximum width measured 29.7mm in actual testing.
For some reason they came out almost exactly the same width.