Another wheel day (and so on).
From a customer
A Zentis
Squad
2.5...no, 2.5SL rear wheel that I'm working on.
In this industry, specs touted as particularly lightweight are tagged with "SL,"
but compared to the old 2.5, the 2.5SL
features a wider rim plus tubeless-ready construction,
so weight-wise it's actually heavier.
Anyway, the customer wants me to rebuild this 24-spoke rear wheel
as a disc brake front wheel.
↑It was a DT old 240S straight 24H, all-black aero-light straight (past tense).
This rim is made for equal spoke counts left and right,
and while the rim holes have offset and it's not an offset rim per se,
it has left and right characteristics
from a performance standpoint.
The hole offset isn't balanced equally left and right;
Freewheel side (centered)
Non-freewheel side (offset to the left (top of image))
Freewheel side (centered)
Non-freewheel side (offset to the left (top of image))
That's the hole offset pattern, and if you feed spokes from the freewheel-side flange through the offset holes,
the non-freewheel-side spokes won't have the right entry angle and the spoke angle becomes very tight.
Built it.
Revo disc hub, 24H (←only comes in 24H spec)
Black half CX Sprint 64 reverse Italian lacing.
I'll do the spoke wrapping later.
By the way, if someone asks "what's the lightest rim?" the answer for mass-produced stuff
is probably the EDGE 25mm tubular rim early model
at around 195 grams.
If it's "what's the lightest clincher rim?" then
Stan's Grail CB7 at the claimed 300g
(measured 289g on my scale) might be it,
but that's a disc-brake-only rim with no braking zone.
So if it's "the lightest rim brake clincher with a braking zone?"
I'd say it's the Zentis old Squad 2.5 WO rim (tubeless incompatible).
At least among everything I've seen.
The old Squad 2.5 rim also came in tubular,
and naturally those are lighter than clinchers, but
in the murky world of tubulars
unfortunately they're nothing particularly special on the lightweight front.
The customer knows all this context, and while
the 2.5SL getting heavier with the wider rim despite its name is unavoidable,
they still wanted to know the actual weight.
I'll tell the customer, but I have no obligation to tell you reading this,
so I'm not posting it here.
↑wow this guy's got a bad attitude
Sorry for the wait!
Please see this image!
Regarding the old 2.5 rim (→here) for details!
I've measured both specs!
↑Okay stop it!
From a customer
A Zentis
Squad
2.5...no, 2.5SL rear wheel that I'm working on.
In this industry, specs touted as particularly lightweight are tagged with "SL,"
but compared to the old 2.5, the 2.5SL
features a wider rim plus tubeless-ready construction,
so weight-wise it's actually heavier.
Anyway, the customer wants me to rebuild this 24-spoke rear wheel
as a disc brake front wheel.
↑It was a DT old 240S straight 24H, all-black aero-light straight (past tense).
This rim is made for equal spoke counts left and right,
and while the rim holes have offset and it's not an offset rim per se,
it has left and right characteristics
from a performance standpoint.
The hole offset isn't balanced equally left and right;
Freewheel side (centered)
Non-freewheel side (offset to the left (top of image))
Freewheel side (centered)
Non-freewheel side (offset to the left (top of image))
That's the hole offset pattern, and if you feed spokes from the freewheel-side flange through the offset holes,
the non-freewheel-side spokes won't have the right entry angle and the spoke angle becomes very tight.
Built it.
Revo disc hub, 24H (←only comes in 24H spec)
Black half CX Sprint 64 reverse Italian lacing.
I'll do the spoke wrapping later.
By the way, if someone asks "what's the lightest rim?" the answer for mass-produced stuff
is probably the EDGE 25mm tubular rim early model
at around 195 grams.
If it's "what's the lightest clincher rim?" then
Stan's Grail CB7 at the claimed 300g
(measured 289g on my scale) might be it,
but that's a disc-brake-only rim with no braking zone.
So if it's "the lightest rim brake clincher with a braking zone?"
I'd say it's the Zentis old Squad 2.5 WO rim (tubeless incompatible).
At least among everything I've seen.
The old Squad 2.5 rim also came in tubular,
and naturally those are lighter than clinchers, but
in the murky world of tubulars
unfortunately they're nothing particularly special on the lightweight front.
The customer knows all this context, and while
the 2.5SL getting heavier with the wider rim despite its name is unavoidable,
they still wanted to know the actual weight.
I'll tell the customer, but I have no obligation to tell you reading this,
so I'm not posting it here.
↑wow this guy's got a bad attitude
Sorry for the wait!
Please see this image!
Regarding the old 2.5 rim (→here) for details!
I've measured both specs!
↑Okay stop it!