A customer dropped off a Racing Zero with me.


The rear wheel had some center drift, but
considering how much it's been used, there wasn't much lateral wobble.



Since it's always Mavic around here, it wouldn't be fair not to show some Fulcrum for a change.
Though it's not brand new!

The rim is shifted toward the freewheel side,
but the actual amount of drift (the amount you'd need to move during truing)
is only half of the gap you can see at the hub.

I keep saying I'll write about this in detail someday but still haven't, but
I'm fairly confident from experience that
"on aged rear wheels (wheels with an occhio in particular),
the rim tends to shift toward the side where the spoke angle is more upright."
This phenomenon definitely occurs.

From here on it's speculation, but
I'd guess that maybe half of this visible drift is from settling during use,
and the other half was already there to begin with.