Another day with wheels (and so on).
A customer left me a 25mm tall Chinese carbon tubeless rim.
The measured weight came to 614g, but
oops, that was the total for both rims.
↑the lighter one
↑the heavier one
Both were fluctuating 1g lighter than what the scale showed in the photos,
but I captured the ones where the display was stable for longer.
Both are offset rims.
According to the manufacturer's specs that came with them,
the ERD values are absolutely nonsensical to the point where you couldn't build a wheel,
and the max tension is listed as 150 kgf, but
even if that were true, you can't tighten the nipples that much without either
them spinning or breaking, so it's not realistic.
The max air pressure is listed as 8.6 bar,
but you shouldn't trust that either.
As for max tension, it's definitely true that for the weight,
these rims can take a surprisingly tight build.
Actually, they hold more tension than the Noms Lab Wheel #8.
It's built.
PowerWay 6-bolt disc hub, 24H,
built in a half-CX sprint 64-spoke reverse Italian equivalent pattern,
with turquoise aluminum nipples.
I'll do the cross-lacing pattern later.
As mentioned in the title,
the rim's outer perimeter has no holes except for the valve hole.
I wrote "equivalent" to 64-spoke pattern because
on this front hub,
the right flange holes are evenly spaced, but
the left flange holes have a sparse-dense phase pattern
apparently just to accommodate both
threading spokes with this flange diameter
and having a 6-bolt disc mount.
Calculating spoke length is tedious.
From the inside, it looks like this.
A customer left me a 25mm tall Chinese carbon tubeless rim.
The measured weight came to 614g, but
oops, that was the total for both rims.
↑the lighter one
↑the heavier one
Both were fluctuating 1g lighter than what the scale showed in the photos,
but I captured the ones where the display was stable for longer.
Both are offset rims.
According to the manufacturer's specs that came with them,
the ERD values are absolutely nonsensical to the point where you couldn't build a wheel,
and the max tension is listed as 150 kgf, but
even if that were true, you can't tighten the nipples that much without either
them spinning or breaking, so it's not realistic.
The max air pressure is listed as 8.6 bar,
but you shouldn't trust that either.
As for max tension, it's definitely true that for the weight,
these rims can take a surprisingly tight build.
Actually, they hold more tension than the Noms Lab Wheel #8.
It's built.
PowerWay 6-bolt disc hub, 24H,
built in a half-CX sprint 64-spoke reverse Italian equivalent pattern,
with turquoise aluminum nipples.
I'll do the cross-lacing pattern later.
As mentioned in the title,
the rim's outer perimeter has no holes except for the valve hole.
I wrote "equivalent" to 64-spoke pattern because
on this front hub,
the right flange holes are evenly spaced, but
the left flange holes have a sparse-dense phase pattern
apparently just to accommodate both
threading spokes with this flange diameter
and having a 6-bolt disc mount.
From the inside, it looks like this.