Today it's wheels again (and so on).
A customer brought in the rear wheel of a ZIPP 404 NSW
rim brake model.
It's not the current model but the previous generation,
with different logos and rim width.
The hub is a ZIPP Cognition,
and the freebody is for SRAM XDR.
The freebody itself has no defects, but
when we tried to swap it for a Shimano freebody,
a problem arose that I can't write about here.
Considering the price of the freebody and such,
it was decided that it would be better to rebuild the rear wheel
with an Evo hub instead.
This was actually the customer's suggestion.
It's a tubeless-ready rim, and
the exterior finish is incomparably
cleaner than the ZIPP rims of old.
Finished building it.
Evo hub, 24H, black semi-comp, 4-cross lacing with cross-threading.
Next, inspection of the front wheel paired with it.
It just had a slight wobble and was otherwise fine.
I say "paired with" rather than "paired" because
the front wheel is the current model with a wider rim—basically a different part.
Different grade and rim depth; the rear is a 404 NSW
and the front is a 303 Firecrest.
The other day, with a cosmetic disc brake version of this wheel,
we rebuilt the rear wheel by flipping the rim left-to-right
just to align the ZIPP logo orientation relative to the valve hole
between front and rear wheels,
but that was only possible because it was disc brake—
you can't do that with rim brake wheels.
↑On this side, the upper half of the ZIPP logo
is visible counterclockwise from the valve hole, but
↑on the opposite side, the lower half of the ZIPP logo
is visible clockwise from the valve hole.
Even if this relationship were different between front and rear wheels,
with a rim brake model,
←←←rotation direction←←←
→→→rotation direction→→→
the braking surface file finish has left-right properties,
so you can't flip the rim left-to-right.
The front wheel spokes are not the neck-broke black CX-RAY,
but rather CX Sprint.
18H not 20H, so this is better in my opinion.
This front hub shell is rim brake, yet it has
an asymmetrical shape like a pepper mill or a chess pawn.
↑Like this
ZIPP wheels vary quite a bit depending on the model.
For example, disc brake wheels are built with
76D (front) and 176D (rear) hubs, ZR1 hubs,
Cognition hubs, and so on.
Because of this, even if you extract the weight of parts
other than the rim (the "uni") from a given wheel,
you can't reverse-engineer the approximate rim weights
of all wheels from the same generation.
So whenever I can, I try to actually measure
ZIPP rim weights directly.
I did that this time too.
And I'm not telling anyone.
↑Man, what a jerk!
My apologies for the wait!
Please take a look at this image!
↑Stop it!!
A customer brought in the rear wheel of a ZIPP 404 NSW
rim brake model.
It's not the current model but the previous generation,
with different logos and rim width.
The hub is a ZIPP Cognition,
and the freebody is for SRAM XDR.
The freebody itself has no defects, but
when we tried to swap it for a Shimano freebody,
a problem arose that I can't write about here.
Considering the price of the freebody and such,
it was decided that it would be better to rebuild the rear wheel
with an Evo hub instead.
This was actually the customer's suggestion.
It's a tubeless-ready rim, and
the exterior finish is incomparably
cleaner than the ZIPP rims of old.
Finished building it.
Evo hub, 24H, black semi-comp, 4-cross lacing with cross-threading.
Next, inspection of the front wheel paired with it.
It just had a slight wobble and was otherwise fine.
I say "paired with" rather than "paired" because
the front wheel is the current model with a wider rim—basically a different part.
Different grade and rim depth; the rear is a 404 NSW
and the front is a 303 Firecrest.
The other day, with a cosmetic disc brake version of this wheel,
we rebuilt the rear wheel by flipping the rim left-to-right
just to align the ZIPP logo orientation relative to the valve hole
between front and rear wheels,
but that was only possible because it was disc brake—
you can't do that with rim brake wheels.
↑On this side, the upper half of the ZIPP logo
is visible counterclockwise from the valve hole, but
↑on the opposite side, the lower half of the ZIPP logo
is visible clockwise from the valve hole.
Even if this relationship were different between front and rear wheels,
with a rim brake model,
←←←rotation direction←←←
→→→rotation direction→→→
the braking surface file finish has left-right properties,
so you can't flip the rim left-to-right.
The front wheel spokes are not the neck-broke black CX-RAY,
but rather CX Sprint.
18H not 20H, so this is better in my opinion.
This front hub shell is rim brake, yet it has
an asymmetrical shape like a pepper mill or a chess pawn.
↑Like this
ZIPP wheels vary quite a bit depending on the model.
For example, disc brake wheels are built with
76D (front) and 176D (rear) hubs, ZR1 hubs,
Cognition hubs, and so on.
Because of this, even if you extract the weight of parts
other than the rim (the "uni") from a given wheel,
you can't reverse-engineer the approximate rim weights
of all wheels from the same generation.
So whenever I can, I try to actually measure
ZIPP rim weights directly.
I did that this time too.
And I'm not telling anyone.
↑Man, what a jerk!
My apologies for the wait!
Please take a look at this image!
↑Stop it!!