Nomu Lab Diary

Built a front wheel with a hole-free carbon rim (front wheel, so part one)

Another day with wheels (etc. etc.).
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A customer left with me two 24H, 40mm-deep carbon rims for disc brake front and rear wheels—
the outer circumference has no holes except for the valve hole.
The lower image is supposedly 1g lighter,
but actually the upper rim sits stable at 404g,
while the lower one mostly reads 404g
and occasionally fluctuates down to 403g (even sitting still),
so I timed the photo for when it showed 403g.
There is a difference, so I'll use the lighter one for the rear wheel.

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Built.

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ENVE sparse-dense phase hole flanged hub, 24H
half-CX black sprint
In terms of lacing, 4-4 reverse Italian
with black aluminum nipples.
I'll do the truing later.

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The ENVE sparse-dense phase flanged hub comes in both carbon and aluminum versions—
this is the aluminum one.
It wasn't bought separately but came from a disassembled complete wheel,
and while there's no dirt or visible wear,
there are lacing marks in the flange holes.
Both front and rear hubs were previously laced reverse Italian.
Since I'm building the front wheel in reverse Italian again,
I've threaded the spokes to match the inpoke marks,
the way they were before.

The rear wheel will be built JIS pattern.
On a separate ENVE note: there was a rim brake complete wheel
that was laced all-black CX-RAY in 4-4 reverse Italian.
We rebuilt it here in black half-comp 4-6 Italian and trued it.
The rim broke, so it went back to the manufacturer,
and they reused just the hub—very diligently relacing it—
but it came back all-black CX-RAY in 4-4 reverse Italian again,
and apparently it didn't ride right,
so we rebuilt it here in black half-comp 4-6 Italian with truing,
which made it the fourth wheel build on that single hub.

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This hub is the type that, when laced for 2-cross,
ends up at nearly 3-cross angles,
so no matter who builds it, a 4-4 pattern
becomes equivalent to 4-6.
If you made the left side disc front flange and right side rear flange
standard symmetrical flanges,
anyone building it would end up with what's equivalent to 4-6,
which is something I probably mention every time this hub comes up.

If the right side were 3-cross instead of 2-cross,
and you pulled the final-cross spoke from the far end of the dense flange,
you could barely manage asymmetrical front-rear lacing,
but I didn't take it that far.
Going against the original inpoke marks is nominally a reason,
but not really a big one.
I'll contradict it on the rear wheel anyway.

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By the way, this rim—the molding around the valve hole, the finish—

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↑looks identical to the rim I built yesterday.

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↑today's rim
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↑yesterday's rim
...they came from the same place.
I honestly have no idea where yesterday's rim came from,
but when I asked the customer about today's,
they said they don't know the manufacturer but bought it on AliExpress.

Today's rim was purchased as a gravel option,
and the actual measurements are rim height 40mm, rim inner width (hooked rim) 27.4mm,
and rim outer width 33.5mm.

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