Another wheel day (and so on).
A customer left me both the front and rear wheels of an SES (Smart Envy System) 4.5.
Today I'm rebuilding the front wheel.
It's a rim for rim brakes
from an era when tubeless wasn't supported and the rim had a nicely moderate width.
The rim model name on its own is A48, but since there are multiple models in the form of "○th generation A48,"
saying A48 doesn't necessarily refer only to this specific rim from this era.
DT 240 hub, 20H, black #14 Campagnolo spokes
built in reverse non-radial spoke pattern.
For a radial-laced front wheel, which is the simplest type of wheel,
the amount of center offset was quite large,
and the lateral trueing was also loose,
but what bothered me more was
the spoke from the next rim hole clockwise from the valve hole
was coming out from the near hub flange from my perspective—
in other words, it was built treating the rim as reverse-drilled.
Since the ENVE rim holes have no directional orientation on either the inner or outer side,
reverse-rim treatment isn't technically a problem.
That there's no deep reason for this becomes obvious when looking at the rear wheel,
but I'll write about that when I get to the rear wheel.
Campagnolo and Fulcrum complete-build wheels use
reverse-drilled rims,
but rim-brake rear wheels and disc-brake front and rear wheels
are built in G3 or 2:1 patterns instead,
so reverse-drilled rims can only be observed on rim-brake front wheels.
Some of Colnago's older carbon rims were also reverse-drilled,
and Racing Zero and older Colnago rims have such strong directional orientation in their holes
that wheels can't be built treating the rim as forward-drilled.
LEW rims have no hole orientation,
and Reynolds wheels from the era when they used LEW rims
were built with only the radial-laced front wheels
treated as reverse-drilled (the reason is unclear).
I've rebuilt it.
DT 240 hub, 20H, black CX Sprint spokes
built in reverse non-radial spoke pattern,
and properly drilled holes.
A customer left me both the front and rear wheels of an SES (Smart Envy System) 4.5.
Today I'm rebuilding the front wheel.
It's a rim for rim brakes
from an era when tubeless wasn't supported and the rim had a nicely moderate width.
The rim model name on its own is A48, but since there are multiple models in the form of "○th generation A48,"
saying A48 doesn't necessarily refer only to this specific rim from this era.
DT 240 hub, 20H, black #14 Campagnolo spokes
built in reverse non-radial spoke pattern.
For a radial-laced front wheel, which is the simplest type of wheel,
the amount of center offset was quite large,
and the lateral trueing was also loose,
but what bothered me more was
the spoke from the next rim hole clockwise from the valve hole
was coming out from the near hub flange from my perspective—
in other words, it was built treating the rim as reverse-drilled.
Since the ENVE rim holes have no directional orientation on either the inner or outer side,
reverse-rim treatment isn't technically a problem.
That there's no deep reason for this becomes obvious when looking at the rear wheel,
but I'll write about that when I get to the rear wheel.
Campagnolo and Fulcrum complete-build wheels use
reverse-drilled rims,
but rim-brake rear wheels and disc-brake front and rear wheels
are built in G3 or 2:1 patterns instead,
so reverse-drilled rims can only be observed on rim-brake front wheels.
Some of Colnago's older carbon rims were also reverse-drilled,
and Racing Zero and older Colnago rims have such strong directional orientation in their holes
that wheels can't be built treating the rim as forward-drilled.
LEW rims have no hole orientation,
and Reynolds wheels from the era when they used LEW rims
were built with only the radial-laced front wheels
treated as reverse-drilled (the reason is unclear).
I've rebuilt it.
DT 240 hub, 20H, black CX Sprint spokes
built in reverse non-radial spoke pattern,
and properly drilled holes.