A customer brought in a Racing Zero Carbon DB for inspection.
It's brand new and the customer wanted a full inspection.
Let me start with the rear wheel.
The wheel appears perfectly centered, but
there was a slight wobble, so I corrected it.
The spokes on the freewheel side (the two spokes in the 2:1 configuration) fit perfectly into the C-groove of the Campagnolo spoke wrench, but
the spokes on the non-freewheel side (the one spoke in the 1:1 configuration) don't fit.
This is a left-right reverse asymmetric spoke diameter build.
The thicker spoke on the one-spoke side was the same on the front wheel too.
Next, the front wheel.
It looks perfectly centered.
In the image above it appears that way, but
when I checked at the angle where the wobble was faint,
there was a barely detectable amount of runout.
I corrected the lateral runout, and now no runout or centering error can be detected at any angle.
Even in the original condition of this front wheel, the precision is extremely well executed as far as stock wheel specs go.
This is just my observation, but for disc brake wheels where there's no brake shoe close to the rim,
runout and centering errors are harder to spot visually,
so there seems to be less care taken with precision—many are quite rough.
Or maybe it was always this way, but
wheels with hand-built specs, especially those that come on complete bikes with mid-range components, seem particularly bad.
The spoke next to the valve hole—the one on the left side in the image above—has a very thin black anodize coating,
and that's visible from the side, but
from the front and back it's almost entirely silver.
Since the spoke itself showed no deformation or other issues,
I left it as is this time.
It's brand new and the customer wanted a full inspection.
Let me start with the rear wheel.
The wheel appears perfectly centered, but
there was a slight wobble, so I corrected it.
The spokes on the freewheel side (the two spokes in the 2:1 configuration) fit perfectly into the C-groove of the Campagnolo spoke wrench, but
the spokes on the non-freewheel side (the one spoke in the 1:1 configuration) don't fit.
This is a left-right reverse asymmetric spoke diameter build.
The thicker spoke on the one-spoke side was the same on the front wheel too.
Next, the front wheel.
It looks perfectly centered.
In the image above it appears that way, but
when I checked at the angle where the wobble was faint,
there was a barely detectable amount of runout.
I corrected the lateral runout, and now no runout or centering error can be detected at any angle.
Even in the original condition of this front wheel, the precision is extremely well executed as far as stock wheel specs go.
This is just my observation, but for disc brake wheels where there's no brake shoe close to the rim,
runout and centering errors are harder to spot visually,
so there seems to be less care taken with precision—many are quite rough.
Or maybe it was always this way, but
wheels with hand-built specs, especially those that come on complete bikes with mid-range components, seem particularly bad.
The spoke next to the valve hole—the one on the left side in the image above—has a very thin black anodize coating,
and that's visible from the side, but
from the front and back it's almost entirely silver.
Since the spoke itself showed no deformation or other issues,
I left it as is this time.