Wheel day again (and so on).
Continuing from yesterday.
I'm rebuilding the Yoreleo's rear wheel.
Unlike the front wheel, I'm reusing the rear hub.
To check spoke length
(not that I blindly trust it)
I've already removed one spoke from each side of the hub flange.
Broke it down to just the rim.
Something I'd noticed during the front wheel work:
this rim's hole offset is
set up as a reverse rim.
But this rim can't really be called a reverse rim.
In its original state, it was laced as a standard rim.
Here's the valve hole viewed from inside with the rim level.
Since it's an offset rim, as a rear rim
the right side is up in the image.
If this were a standard rim's hole offset,
the hole to the right of the valve hole should
be lower than the one on the left,
but in reality it's the opposite.
And this isn't just some optical illusion from the holes next to the valve—
this alternating left-right hole offset clearly
continues all the way around.
So the question is whether this is a reverse rim,
or more precisely, whether it should be laced as a standard rim
or as a reverse rim—
and the answer is the former.
In the rim holes on either side of the valve hole,
I installed test spokes
("DT 12mm aluminum nipples
with CX-RAY 300mm spokes threaded in
just until the threads hide")—
color-coded silver and black.
From here, I pulled the nipples all the way out through the rim holes,
leveled the rim,
and observed how much the spokes sag
under their own weight
in both orientations—
rim right side up and rim left side up.
↑Here's with the rim right side face up.
You can clearly see the directional difference in the rim holes.
The spoke sagging lower
should connect to the hub flange beyond it,
so based on the rim hole directionality,
this rim is a standard rim.
↑And here with the rim left side face up.
The spoke sagging more under its own weight
switched from silver to black,
but that still means
in terms of rim hole directionality,
it's a standard rim.
To sum up: normally, a rim aligns
the hole offset (lateral position)
with the directionality from the rim holes to the hub flanges,
but on this Yoreleo rim,
the hole offset is reverse while the directionality is standard,
which is what's strange about it.
For example, if you took a Mavic Open Pro-style eyeleted rim
(no directional bias in the rim holes)
and deliberately reversed the right-drop left-drop
to lace it as a reverse rim,
viewing the left and right spokes from front and back shows them
crossing near the rim holes as in the diagram above,
and the spoke angle gets shallower on both sides,
which theoretically increases lateral stiffness slightly—
but that difference isn't perceptible,
and it looks ugly and crude
so nobody does it.
Regarding why Yoreleo drilled holes like this:
until they explain a rational reason,
I'm calling Yoreleo
"the idiot who set the rim-drilling machine wrong."
If you can present a reason that convinces me,
I'll apologize for calling you an idiot and introduce it here,
so please tell me.
↑This is the image from earlier
when the right side face was down,
and you can see it's quite hard
to connect the silver spoke to the non-freewheel flange
as it should be.
In other words, directionality matters more than
lateral hole position in determining whether to treat it as a standard rim.
So I'm lacing this one as a standard rim.
The original front and rear were done that way too.
Built it.
Yoreleo's 24H hub
silver spokes, silver nipples, semi-CX Sprint rim
forced 2X lacing both sides.
Truing comes later.
Since the original had black nipples and I'm switching to silver,
when I broke it down to just the rim,
I ended up with an opportunity to measure the rim's actual weight
with nothing inside it—
and I did actually measure it,
but I have no intention of telling you what it was.
↑wow what a jerk
Thnak Yuo For Waityng! Pleese Vew Thes Emage!
Frunt Weel Rim!
Rear Weel Rim!
↑stooooop!
Continuing from yesterday.
I'm rebuilding the Yoreleo's rear wheel.
Unlike the front wheel, I'm reusing the rear hub.
To check spoke length
I've already removed one spoke from each side of the hub flange.
Broke it down to just the rim.
Something I'd noticed during the front wheel work:
this rim's hole offset is
set up as a reverse rim.
But this rim can't really be called a reverse rim.
In its original state, it was laced as a standard rim.
Here's the valve hole viewed from inside with the rim level.
Since it's an offset rim, as a rear rim
the right side is up in the image.
If this were a standard rim's hole offset,
the hole to the right of the valve hole should
be lower than the one on the left,
but in reality it's the opposite.
And this isn't just some optical illusion from the holes next to the valve—
this alternating left-right hole offset clearly
continues all the way around.
So the question is whether this is a reverse rim,
or more precisely, whether it should be laced as a standard rim
or as a reverse rim—
and the answer is the former.
In the rim holes on either side of the valve hole,
I installed test spokes
("DT 12mm aluminum nipples
with CX-RAY 300mm spokes threaded in
just until the threads hide")—
color-coded silver and black.
From here, I pulled the nipples all the way out through the rim holes,
leveled the rim,
and observed how much the spokes sag
under their own weight
in both orientations—
rim right side up and rim left side up.
↑Here's with the rim right side face up.
You can clearly see the directional difference in the rim holes.
The spoke sagging lower
should connect to the hub flange beyond it,
so based on the rim hole directionality,
this rim is a standard rim.
↑And here with the rim left side face up.
The spoke sagging more under its own weight
switched from silver to black,
but that still means
in terms of rim hole directionality,
it's a standard rim.
To sum up: normally, a rim aligns
the hole offset (lateral position)
with the directionality from the rim holes to the hub flanges,
but on this Yoreleo rim,
the hole offset is reverse while the directionality is standard,
which is what's strange about it.
For example, if you took a Mavic Open Pro-style eyeleted rim
(no directional bias in the rim holes)
and deliberately reversed the right-drop left-drop
to lace it as a reverse rim,
viewing the left and right spokes from front and back shows them
crossing near the rim holes as in the diagram above,
and the spoke angle gets shallower on both sides,
which theoretically increases lateral stiffness slightly—
but that difference isn't perceptible,
and it looks ugly and crude
so nobody does it.
Regarding why Yoreleo drilled holes like this:
until they explain a rational reason,
I'm calling Yoreleo
"the idiot who set the rim-drilling machine wrong."
If you can present a reason that convinces me,
I'll apologize for calling you an idiot and introduce it here,
so please tell me.
↑This is the image from earlier
when the right side face was down,
and you can see it's quite hard
to connect the silver spoke to the non-freewheel flange
as it should be.
In other words, directionality matters more than
lateral hole position in determining whether to treat it as a standard rim.
So I'm lacing this one as a standard rim.
The original front and rear were done that way too.
Built it.
Yoreleo's 24H hub
silver spokes, silver nipples, semi-CX Sprint rim
forced 2X lacing both sides.
Truing comes later.
Since the original had black nipples and I'm switching to silver,
when I broke it down to just the rim,
I ended up with an opportunity to measure the rim's actual weight
with nothing inside it—
and I did actually measure it,
but I have no intention of telling you what it was.
↑wow what a jerk
Thnak Yuo For Waityng! Pleese Vew Thes Emage!
Frunt Weel Rim!
Rear Weel Rim!
↑stooooop!