Wheels again today (and so on).
Built a front wheel with a 40mm-deep carbon rim and dynamo hub.
The rim depth measures 39.7mm actual,
but even 35mm-deep rims get called "C40" or whatever these days,
so it's fine.
Shimano Alfine Dynamo 8-speed 24H hub in all-black CX-RAY,
laced 4-cross reverse Italian with no spoke leads.
It's also a centerlock disc hub, and there's a slight dish,
but not enough to warrant asymmetrical or offset lacing patterns.
The spoke lengths differed by 0.6mm in calculation,
and rounded to 1mm difference in practice.
The rim is a hookless tubeless rim without a hump.
You might say: if there's no hump, can you really call it tubeless?
The center channel alone appears on old hump-free rims too, like the Alpinist CLX.
But this rim is hookless,
so it couldn't possibly be tubeless-incompatible.
There's a seal on the hub shell—
this is because when threading spokes through the flanges,
the spokes contact the hub shell,
and the seal prevents scratches during assembly.
The distance from the hub shell's centerline to each flange isn't equal—
the disc-mount side is narrower.
Especially the inpokes on the disc-mount flange don't slide through cleanly;
you have to thread the spoke's nipple into the flange hole to get it through.
During that process the spoke's flats risk scraping the hub shell,
so the seal protects not just against the threaded section but also against that contact point.
Built a front wheel with a 40mm-deep carbon rim and dynamo hub.
The rim depth measures 39.7mm actual,
but even 35mm-deep rims get called "C40" or whatever these days,
so it's fine.
Shimano Alfine Dynamo 8-speed 24H hub in all-black CX-RAY,
laced 4-cross reverse Italian with no spoke leads.
It's also a centerlock disc hub, and there's a slight dish,
but not enough to warrant asymmetrical or offset lacing patterns.
The spoke lengths differed by 0.6mm in calculation,
and rounded to 1mm difference in practice.
The rim is a hookless tubeless rim without a hump.
You might say: if there's no hump, can you really call it tubeless?
The center channel alone appears on old hump-free rims too, like the Alpinist CLX.
But this rim is hookless,
so it couldn't possibly be tubeless-incompatible.
There's a seal on the hub shell—
this is because when threading spokes through the flanges,
the spokes contact the hub shell,
and the seal prevents scratches during assembly.
The distance from the hub shell's centerline to each flange isn't equal—
the disc-mount side is narrower.
Especially the inpokes on the disc-mount flange don't slide through cleanly;
you have to thread the spoke's nipple into the flange hole to get it through.
During that process the spoke's flats risk scraping the hub shell,
so the seal protects not just against the threaded section but also against that contact point.