A customer brought in the rear wheel of a Racing 1 for service.
Wait, what's this!
Using spare parts from Campagnolo and Fulcrum,
during a period about 2 years ago when "hub shells" were available,
I built a wheel with rim/spoke/hub in black/silver/black or silver/black/silver pattern—
a "hand-built Racing 1"!
But then I realized I was wrong.
The Racing 1 with non-tie spokes that have phase gaps
came out during a period when hub shells were unavailable.
This was the original specification from the start.
The reason the customer brought it in was because "the hub rotation is grinding."
The ball race on the shaft side was completely pitted.
The customer has industrial knowledge and builds wheels themselves,
so they're able to "detect subtle abnormalities and service the bike before things get serious,"
but since they're not the original owner of this wheel, that didn't work out this time.
The notification about the hub rotation issue came from the customer's observation.
I did the same thing just recently, but forgot to take photos then.
The spring that lifts the pawls (you might wonder where the spring is,
but it's called a "pawl spring")—its shape had become distorted.
In this condition, the lifting force on the three pawls isn't uniform,
and in some cases one pawl might stay nearly flat (which is very bad).
So even if they're not broken, I sometimes recommend replacement,
and the way to tell is simple.
↑This is a new one, and
when new, the spring forms a perfect circle, even including the overlapping parts.
If the spring shape is severely distorted from a circle, it needs replacing.
The ball race on the hub side seemed like it could get by without replacement,
but since we're replacing the retainer balls anyway,
I didn't want old and new mixed in that area,
so I happily went with brand new ones.
～Bonus～
↑This is a "hand-built Racing 1"!
The hub shell as a spare part doesn't have a sticker on it.
Unlike the rim, the hub shell sticker is impossible to obtain as a spare part.
Wait, what's this!
Using spare parts from Campagnolo and Fulcrum,
during a period about 2 years ago when "hub shells" were available,
I built a wheel with rim/spoke/hub in black/silver/black or silver/black/silver pattern—
a "hand-built Racing 1"!
But then I realized I was wrong.
The Racing 1 with non-tie spokes that have phase gaps
came out during a period when hub shells were unavailable.
This was the original specification from the start.
The reason the customer brought it in was because "the hub rotation is grinding."
The ball race on the shaft side was completely pitted.
The customer has industrial knowledge and builds wheels themselves,
so they're able to "detect subtle abnormalities and service the bike before things get serious,"
but since they're not the original owner of this wheel, that didn't work out this time.
The notification about the hub rotation issue came from the customer's observation.
I did the same thing just recently, but forgot to take photos then.
The spring that lifts the pawls (you might wonder where the spring is,
but it's called a "pawl spring")—its shape had become distorted.
In this condition, the lifting force on the three pawls isn't uniform,
and in some cases one pawl might stay nearly flat (which is very bad).
So even if they're not broken, I sometimes recommend replacement,
and the way to tell is simple.
↑This is a new one, and
when new, the spring forms a perfect circle, even including the overlapping parts.
If the spring shape is severely distorted from a circle, it needs replacing.
The ball race on the hub side seemed like it could get by without replacement,
but since we're replacing the retainer balls anyway,
I didn't want old and new mixed in that area,
so I happily went with brand new ones.
～Bonus～
↑This is a "hand-built Racing 1"!
The hub shell as a spare part doesn't have a sticker on it.
Unlike the rim, the hub shell sticker is impossible to obtain as a spare part.