A customer brought in a Shamal Ultra rear wheel for disc brakes.
They bought it at auction but are suspicious about its condition, so they want a full inspection.
They also want to swap the freewheel body from Campagnolo to Shimano compatibility.
The aluminum rim Shamal Ultra DB is actually already discontinued—
it was only produced between model years 2018 and 2020.
The aluminum rim model for rim brakes does exist in the 2023 lineup,
but for disc brake models in the Shamal series,
only the carbon rim version—the Shamal Carbon DB
(not the Shamal Ultra Carbon DB)—remains in production.
You can see a line where the rim's side profile changes at what would be the brake zone,
and the outermost side isn't parallel but rather tapers in a V-shape toward the outside.
To exaggerate a bit, it has a tapered shape like an abacus bead.
Swapping the freewheel body is fine, but—
The lockbolt for the bearing adjustment nut
(Campagnolo calls this part the Adjusting Sleeve)
was missing.
This isn't the kind of part that would fall out on its own,
so I'm pretty sure the person who sold it on auction knew about it.
It feels intentional, frankly.
This bolt isn't sold separately.
It only comes as part of a set with the bearing adjustment nut.
The part number is HB-SH040, and the retail price is ¥3,402 including tax.
The thread spec isn't anything special, so technically you could machine a standard Phillips head screw to function the same way,
but this bolt is a specialty item—the area under the head is smooth and rounded to prevent breaking if you overtighten,
and there are no threads cut in the section directly below the head.
Plus it has a sophisticated inner-butted shape.
Since there's no single-part sale option, the customer would either need to buy the whole assembly
or resort to some makeshift solution with standard fasteners...
"As a special exception, I sourced the bolt separately!"
"Nice one!"
The bolt has the shape I described earlier.
I installed the replacement bolt.
The preliminary centering was dead-on.
The top image both shows off that I've already swapped the freewheel body
and that the bearing adjustment nut's lockbolt is installed.
There's a slight amount of runout, and after truing I confirmed the centering remained perfect with the gauge,
but I didn't bother taking another photo since it would look basically identical to the one above.
This one's harder to judge in terms of intent, but
the four-leg valve bushing for the 2WAY-FIT aluminum rim was missing.
I installed a replacement valve bushing in the rim.
The other one you see in the photo is in case the matching front wheel exists
and is also missing a bushing—I'm providing that as a service.
If the front wheel has one installed or they only bought the rear wheel,
keep it as a spare.
The reason valve bushings are only included with aluminum spoke wheels using 2WAY-FIT rims
is that you can't drill a hole on the outer side large enough for aluminum nipples
because the tube-valve base needs to be press-fitted into the outer hole.
For more details, see here.
By the way, the manufacturer rates this as a low-profile rim,
so it's built with reverse asymmetric spoking as a counter to asymmetric lacing.
When viewed from the side, the spoke widths are the same on both sides, but
the freewheel-side spokes fit into the C-groove of the Campagnolo tool,
the non-freewheel-side spokes are thicker and won't fit in the C-groove,
so they're retained with the A-groove instead.
If you put these spokes on a rim-brake Shamal Ultra rear wheel,
the already-incredible stiffness would become insanely over-the-top,
but the spoke head shapes are different anyway, so it's impossible to fit them. Too bad.
They bought it at auction but are suspicious about its condition, so they want a full inspection.
They also want to swap the freewheel body from Campagnolo to Shimano compatibility.
The aluminum rim Shamal Ultra DB is actually already discontinued—
it was only produced between model years 2018 and 2020.
The aluminum rim model for rim brakes does exist in the 2023 lineup,
but for disc brake models in the Shamal series,
only the carbon rim version—the Shamal Carbon DB
(not the Shamal Ultra Carbon DB)—remains in production.
You can see a line where the rim's side profile changes at what would be the brake zone,
and the outermost side isn't parallel but rather tapers in a V-shape toward the outside.
To exaggerate a bit, it has a tapered shape like an abacus bead.
Swapping the freewheel body is fine, but—
The lockbolt for the bearing adjustment nut
(Campagnolo calls this part the Adjusting Sleeve)
was missing.
This isn't the kind of part that would fall out on its own,
so I'm pretty sure the person who sold it on auction knew about it.
It feels intentional, frankly.
This bolt isn't sold separately.
It only comes as part of a set with the bearing adjustment nut.
The part number is HB-SH040, and the retail price is ¥3,402 including tax.
The thread spec isn't anything special, so technically you could machine a standard Phillips head screw to function the same way,
but this bolt is a specialty item—the area under the head is smooth and rounded to prevent breaking if you overtighten,
and there are no threads cut in the section directly below the head.
Plus it has a sophisticated inner-butted shape.
Since there's no single-part sale option, the customer would either need to buy the whole assembly
or resort to some makeshift solution with standard fasteners...
"As a special exception, I sourced the bolt separately!"
"Nice one!"
The bolt has the shape I described earlier.
I installed the replacement bolt.
The preliminary centering was dead-on.
The top image both shows off that I've already swapped the freewheel body
and that the bearing adjustment nut's lockbolt is installed.
There's a slight amount of runout, and after truing I confirmed the centering remained perfect with the gauge,
but I didn't bother taking another photo since it would look basically identical to the one above.
This one's harder to judge in terms of intent, but
the four-leg valve bushing for the 2WAY-FIT aluminum rim was missing.
I installed a replacement valve bushing in the rim.
The other one you see in the photo is in case the matching front wheel exists
and is also missing a bushing—I'm providing that as a service.
If the front wheel has one installed or they only bought the rear wheel,
keep it as a spare.
The reason valve bushings are only included with aluminum spoke wheels using 2WAY-FIT rims
is that you can't drill a hole on the outer side large enough for aluminum nipples
because the tube-valve base needs to be press-fitted into the outer hole.
For more details, see here.
By the way, the manufacturer rates this as a low-profile rim,
so it's built with reverse asymmetric spoking as a counter to asymmetric lacing.
When viewed from the side, the spoke widths are the same on both sides, but
the freewheel-side spokes fit into the C-groove of the Campagnolo tool,
the non-freewheel-side spokes are thicker and won't fit in the C-groove,
so they're retained with the A-groove instead.
If you put these spokes on a rim-brake Shamal Ultra rear wheel,
the already-incredible stiffness would become insanely over-the-top,
but the spoke head shapes are different anyway, so it's impossible to fit them. Too bad.