Another day with wheels (and so on).
A customer brought in a Racing Zero front wheel for service.
There's a warning that says to only use Hutchinson tires with tubeless setups!
But back then, IRC was the only other tubeless tire option available,
so this essentially meant "don't use IRC."
At one angular position near that warning, there's a dent in the bead hook, but...
At a different angular position,
there's an even more severe dent,
and when I put tape marks at these two locations,
based on the scratches and damage to the rim side,
it appears the rim buckled as if it had been wedged into a vertical grating.
I need to replace the rim, but the same-generation rims have been discontinued.
This Racing Zero 2WAY-FIT first came out in 2009
and was the first model of the 2WAY-FIT design.
The 2WAY-FIT was the first to introduce non-bladed spokes
and to add rest positions to the rear rim holes,
so at the 2009 Racing Zero used bladed spokes with the rear rim holes evenly spaced.
Racing One 2WAY-FIT also came out in 2009 at the same time,
but Racing One 2WAY-FIT used brass nipples like the WO models of that era,
so the rim hole diameter differs from Racing Zero,
making it a rim specific to that model.
To be specific, the 2009 Racing Zero 2WAY-FIT front rim part number was
R0F-2RB (Racing Zero Front 2WAY-FIT Rim Black),
while the Racing One 2WAY-FIT part number was
R1F-2RB.
However, R0F-2RB has already been discontinued,
and the next generation R0F-2RB01 was also discontinued,
so I ordered the next generation R0F-2RB11.
Incidentally, the next generation after that, R0F-2RB21,
became the rim for the Racing Zero Competizione.
The R0F-2RB11 first appeared in the 2013 model lineup,
and this rim is shared between Racing Zero and Racing One 2WAY-FIT models,
so it's not specific to one model, which is why there's no sticker on it
(the difference between Zero and One is the hub shell material and bearing specification).
So while I'm using the 2RB11 rim, if I use a sticker from the 2RB era,
the appearance will be almost identical.
I asked a distributor who's the most knowledgeable about Campagnolo in Japan
to find the original 2RB sticker, but they said it's no longer available
and it would look somewhat different.
Well... you can't find what doesn't exist anymore.
I said the appearance would be "almost" identical, but here's the difference:
On the 2RB, the valve hole and the rim joint are centered between rim holes,
and the uncut section around the valve hole is longer,
but on the 2RB11, the valve hole and joint are positioned right next to a rim hole,
and the uncut section is shorter.
As for the sticker, I was told it would look a bit different,
but it turned out to be from the same era. Lucky!
Got it built up.
Usually, when I replace rims on wheels like Racing Zero,
I don't replace the nipples
(though I do replace any that are stripped),
but this time I did replace them.
The reason is that the early Fulcrum aluminum nipples for aluminum spokes
had surface treatment that was prone to corrosion,
and the coating peels off like skin flaking,
or aluminum oxide builds up.
The same kind of phenomenon appears on Campagnolo's non-black
overboard BB cups.
At first I thought about reusing them,
but when I tried to retrieve one with a magnet through a rim hole,
it didn't pass through cleanly, so I decided against it.
A customer brought in a Racing Zero front wheel for service.
There's a warning that says to only use Hutchinson tires with tubeless setups!
But back then, IRC was the only other tubeless tire option available,
so this essentially meant "don't use IRC."
At one angular position near that warning, there's a dent in the bead hook, but...
At a different angular position,
there's an even more severe dent,
and when I put tape marks at these two locations,
based on the scratches and damage to the rim side,
it appears the rim buckled as if it had been wedged into a vertical grating.
I need to replace the rim, but the same-generation rims have been discontinued.
This Racing Zero 2WAY-FIT first came out in 2009
and was the first model of the 2WAY-FIT design.
The 2WAY-FIT was the first to introduce non-bladed spokes
and to add rest positions to the rear rim holes,
so at the 2009 Racing Zero used bladed spokes with the rear rim holes evenly spaced.
Racing One 2WAY-FIT also came out in 2009 at the same time,
but Racing One 2WAY-FIT used brass nipples like the WO models of that era,
so the rim hole diameter differs from Racing Zero,
making it a rim specific to that model.
To be specific, the 2009 Racing Zero 2WAY-FIT front rim part number was
R0F-2RB (Racing Zero Front 2WAY-FIT Rim Black),
while the Racing One 2WAY-FIT part number was
R1F-2RB.
However, R0F-2RB has already been discontinued,
and the next generation R0F-2RB01 was also discontinued,
so I ordered the next generation R0F-2RB11.
Incidentally, the next generation after that, R0F-2RB21,
became the rim for the Racing Zero Competizione.
The R0F-2RB11 first appeared in the 2013 model lineup,
and this rim is shared between Racing Zero and Racing One 2WAY-FIT models,
so it's not specific to one model, which is why there's no sticker on it
(the difference between Zero and One is the hub shell material and bearing specification).
So while I'm using the 2RB11 rim, if I use a sticker from the 2RB era,
the appearance will be almost identical.
I asked a distributor who's the most knowledgeable about Campagnolo in Japan
to find the original 2RB sticker, but they said it's no longer available
and it would look somewhat different.
Well... you can't find what doesn't exist anymore.
I said the appearance would be "almost" identical, but here's the difference:
On the 2RB, the valve hole and the rim joint are centered between rim holes,
and the uncut section around the valve hole is longer,
but on the 2RB11, the valve hole and joint are positioned right next to a rim hole,
and the uncut section is shorter.
As for the sticker, I was told it would look a bit different,
but it turned out to be from the same era. Lucky!
Got it built up.
Usually, when I replace rims on wheels like Racing Zero,
I don't replace the nipples
(though I do replace any that are stripped),
but this time I did replace them.
The reason is that the early Fulcrum aluminum nipples for aluminum spokes
had surface treatment that was prone to corrosion,
and the coating peels off like skin flaking,
or aluminum oxide builds up.
The same kind of phenomenon appears on Campagnolo's non-black
overboard BB cups.
At first I thought about reusing them,
but when I tried to retrieve one with a magnet through a rim hole,
it didn't pass through cleanly, so I decided against it.