Another day on wheels (and so on).
Continuing from yesterday.
I'm rebuilding the rear wheel that came laced with a
Reserve 30 | HD rim.
DT 350 BOOST hub, 28H
All-black Campagnolo Record, 64-spoke reverse Italian lacing.
Not JIS lacing.
Looking closely at the top image, you can see the paint
on the freewheel-side inpokes is worn from contact.
This hub has reverse high-low flanges, so with an offset rim,
64-spoke lacing gives spoke lengths that are
roughly equal (within 1mm) on both sides.
That said, DT hasn't explicitly stated whether they
deliberately designed reverse high-low flanges with spoke length in mind,
the way Gravel Tack did with their front hub.
The contemporary 240 hub also has reverse high-low flanges,
but the dimension difference is more modest than the 350.
Also, this wheel's rim is
quite heavily offset.
The original spoke length appears short
for a generic nipple, but as I noted with the front wheel,
it looks appropriate for this nipple.
Dead center, but tensioned slightly looser than the front wheel.
This is more likely due to individual differences in builder technique
rather than manufacturer intent.
You might think the reverse high-low flange means
the non-driveside would be loose,
but even comparing the high-tension driveside spokes,
it's noticeably looser than the front wheel.
The spoke tension asymmetry drawback from the hub dimensions
seems to be nearly canceled out by the rim offset.
Rebuilt it.
28H, half-black CX Sprint
64-spoke reverse Italian lacing.
I didn't do JIS lacing.
↑This is the original freewheel-side inpoke,
and you can see chain-drop damage marks.
Reverse Italian lacing causes less spoke damage from chain drops
than JIS lacing, and since the original was reverse Italian,
I carried that pattern forward this time.
That said, the freewheel side went from 6-spoke to 4-spoke,
so the contact marks on the hub flange don't line up
with the new inpokes.
The model name sticker on the rim is applied the same way
relative to the offset direction on both wheels, so
because the offset reverses between front and rear,
the rear wheel appears backwards when viewed from the right side.
On Reserve wheels for MTB, the numbers in the model name
refer to the rim's internal width.
There are three: 28, 30, and 31. The 28 comes only in 28 | XC Carbon,
the 31 only in 31 | DH Carbon, while
the 30 offers plenty of lineup options even just in carbon—
30 | XC, 30 | HD, 30 | DH, and 30 | SL.
The 30 series varies the carbon layup and weight carefully by model,
which also slightly changes rim height.
Below are the rim heights and claimed weights for 29-inch rims:
30 | XC: 19mm height, 400g
30 | HD: 20mm height, 516g
30 | DH: 21mm height, front rim 585g, rear rim 645g
30 | SL: 19mm height, 371g
With this rim, the nipple friction was extremely light—
they wound in smoothly and easily.
I think this is because the outermost carbon layer
has a smooth finish.
Building without chatter and tensioning easily might be thanks to
the bead-up around the rim holes and the rim's heavier weight.
You can feel it while building: the rim is noticeably stiffer.
So if this were a 30 | SL rim instead,
even though the nipples would turn just as smoothly,
I'm not sure I could tension it the same way this time.
On the manufacturer's website photos, below the "30" in the model name sticker
is a marking for "HD" or "SL" and so on, but
this rim only had a "29" there—
the rim size marking—so initially I
couldn't identify which 30 model
this rim was.
I was able to identify it by
weighing the rim.
And naturally, I have no intention of sharing the specific number.
↑wow this guy's got bad vibes
Sorry for the wait! Please check out this image!
Front wheel's rim!
Rear wheel's rim!
↑cut it out!
Continuing from yesterday.
I'm rebuilding the rear wheel that came laced with a
Reserve 30 | HD rim.
DT 350 BOOST hub, 28H
All-black Campagnolo Record, 64-spoke reverse Italian lacing.
Not JIS lacing.
Looking closely at the top image, you can see the paint
on the freewheel-side inpokes is worn from contact.
This hub has reverse high-low flanges, so with an offset rim,
64-spoke lacing gives spoke lengths that are
roughly equal (within 1mm) on both sides.
That said, DT hasn't explicitly stated whether they
deliberately designed reverse high-low flanges with spoke length in mind,
the way Gravel Tack did with their front hub.
The contemporary 240 hub also has reverse high-low flanges,
but the dimension difference is more modest than the 350.
Also, this wheel's rim is
quite heavily offset.
The original spoke length appears short
for a generic nipple, but as I noted with the front wheel,
it looks appropriate for this nipple.
Dead center, but tensioned slightly looser than the front wheel.
This is more likely due to individual differences in builder technique
rather than manufacturer intent.
You might think the reverse high-low flange means
the non-driveside would be loose,
but even comparing the high-tension driveside spokes,
it's noticeably looser than the front wheel.
The spoke tension asymmetry drawback from the hub dimensions
seems to be nearly canceled out by the rim offset.
Rebuilt it.
28H, half-black CX Sprint
64-spoke reverse Italian lacing.
I didn't do JIS lacing.
↑This is the original freewheel-side inpoke,
and you can see chain-drop damage marks.
Reverse Italian lacing causes less spoke damage from chain drops
than JIS lacing, and since the original was reverse Italian,
I carried that pattern forward this time.
That said, the freewheel side went from 6-spoke to 4-spoke,
so the contact marks on the hub flange don't line up
with the new inpokes.
The model name sticker on the rim is applied the same way
relative to the offset direction on both wheels, so
because the offset reverses between front and rear,
the rear wheel appears backwards when viewed from the right side.
On Reserve wheels for MTB, the numbers in the model name
refer to the rim's internal width.
There are three: 28, 30, and 31. The 28 comes only in 28 | XC Carbon,
the 31 only in 31 | DH Carbon, while
the 30 offers plenty of lineup options even just in carbon—
30 | XC, 30 | HD, 30 | DH, and 30 | SL.
The 30 series varies the carbon layup and weight carefully by model,
which also slightly changes rim height.
Below are the rim heights and claimed weights for 29-inch rims:
30 | XC: 19mm height, 400g
30 | HD: 20mm height, 516g
30 | DH: 21mm height, front rim 585g, rear rim 645g
30 | SL: 19mm height, 371g
With this rim, the nipple friction was extremely light—
they wound in smoothly and easily.
I think this is because the outermost carbon layer
has a smooth finish.
Building without chatter and tensioning easily might be thanks to
the bead-up around the rim holes and the rim's heavier weight.
You can feel it while building: the rim is noticeably stiffer.
So if this were a 30 | SL rim instead,
even though the nipples would turn just as smoothly,
I'm not sure I could tension it the same way this time.
On the manufacturer's website photos, below the "30" in the model name sticker
is a marking for "HD" or "SL" and so on, but
this rim only had a "29" there—
the rim size marking—so initially I
couldn't identify which 30 model
this rim was.
I was able to identify it by
weighing the rim.
And naturally, I have no intention of sharing the specific number.
↑wow this guy's got bad vibes
Sorry for the wait! Please check out this image!
Front wheel's rim!
Rear wheel's rim!
↑cut it out!