Another day of wheel work (and so on).
I rebuilt the rear wheel of the Ambrosio Metamorphosis the other day,
and now the customer wants the front wheel rebuilt as well.
Earth-mark Record hub, 32H, with Sachetti butted spokes
built in 6-cross Italian lacing, but
the rim is oriented the wrong way, which bothers them, so they want it rebuilt.
There's no centering issue.
There is some runout, so depending on the phase, it might be detected, but
at least in the position shown in the images, there's no problem.
The spoke tension is low,
but I'm not sure if it was always like this or if it's sagged over time.
Also, this rim is different, but
those ultra-light pipe rims from the old days (under 300g) can only be laced
at about this tension or slightly higher.
I thought the spoke length was short when viewed from the outer side, but
the nipples are only 11mm long, so the shortness of the spokes
is also visible from the inner side.
The nipples that come with Sapim's CX-RAY are 14mm long, but
while the spoke length is about the same,
the spoke threads are hidden inside the nipple,
so you can't tell at a glance. This is common in many cases,
and even appears in manufacturers' standard pre-built wheels.
Even before the rim orientation issue, the valve hole position
was awkwardly placed within the final crossing pair of four spokes on each side.
Part of the hub flange had rusted due to galvanic corrosion,
and white rust had crystallized like salt, gripping the spokes, so
when I tried to remove the spokes,
they bent like straight spokes.
I won't buff the hub, but
I quickly removed the rust and polished it lightly.
The rust was severe enough in some areas that new spokes couldn't fit, so
I also cleaned the flange holes with a thin round file.
Many of the eyelet crimps had loosened.
Since they're double eyelets, they don't spin freely, but
↑they can move within about this range
(rotating clockwise from the previous image).
There's nothing I can do about this, so I'll build the wheel as-is.
Built.
32H CX-RAY 6-cross lacing withgold aluminum nipples.
Update: They were orange, my apologies.
I don't think lacing is necessary, so I won't do it.
I considered using CX-Sprint, but
I judged that the front wheel has sufficient stiffness with CX-RAY.
I rebuilt the rear wheel of the Ambrosio Metamorphosis the other day,
and now the customer wants the front wheel rebuilt as well.
Earth-mark Record hub, 32H, with Sachetti butted spokes
built in 6-cross Italian lacing, but
the rim is oriented the wrong way, which bothers them, so they want it rebuilt.
There's no centering issue.
There is some runout, so depending on the phase, it might be detected, but
at least in the position shown in the images, there's no problem.
The spoke tension is low,
but I'm not sure if it was always like this or if it's sagged over time.
Also, this rim is different, but
those ultra-light pipe rims from the old days (under 300g) can only be laced
at about this tension or slightly higher.
I thought the spoke length was short when viewed from the outer side, but
the nipples are only 11mm long, so the shortness of the spokes
is also visible from the inner side.
The nipples that come with Sapim's CX-RAY are 14mm long, but
while the spoke length is about the same,
the spoke threads are hidden inside the nipple,
so you can't tell at a glance. This is common in many cases,
and even appears in manufacturers' standard pre-built wheels.
Even before the rim orientation issue, the valve hole position
was awkwardly placed within the final crossing pair of four spokes on each side.
Part of the hub flange had rusted due to galvanic corrosion,
and white rust had crystallized like salt, gripping the spokes, so
when I tried to remove the spokes,
they bent like straight spokes.
I won't buff the hub, but
I quickly removed the rust and polished it lightly.
The rust was severe enough in some areas that new spokes couldn't fit, so
I also cleaned the flange holes with a thin round file.
Many of the eyelet crimps had loosened.
Since they're double eyelets, they don't spin freely, but
↑they can move within about this range
(rotating clockwise from the previous image).
There's nothing I can do about this, so I'll build the wheel as-is.
Built.
32H CX-RAY 6-cross lacing with
Update: They were orange, my apologies.
I don't think lacing is necessary, so I won't do it.
I considered using CX-Sprint, but
I judged that the front wheel has sufficient stiffness with CX-RAY.