Back to wheels again today (and so on).
I built a rear wheel using
an Araya Prostaff 400 tubular rim and
a Sunour Shuparubu (Suntour Superbe) double-threaded fixed gear hub.
↑Rim label
32 hole, full radial lacing pattern to JIS standard.
I'll do the truing later.
Currently, DT Swiss silver competition spokes around 300mm length
aren't in stock at the wholesaler—or rather,
they don't seem to bother keeping them in stock regularly (black ones are available),
so I used Sapim Race spokes with the same butted dimensions instead.
The hub isn't 120×10, which would mean 120mm width with 10mm diameter axle,
but rather the 110×8 standard.
The "8" doesn't mean an 8mm diameter hub axle—
it's a 10mm diameter axle with
1mm shaved off parallel on each end,
since the frame's dropout slot is 8mm wide,
this prevents the hub axle from spinning and makes it easier to secure.
Additionally, there exist frames for track cycling
where the over-locknut dimension
is 110mm width rather than 120mm
(to be clear, even in track racing 120×10 is the majority).
110×8 rear hubs
basically don't exist for anything other than track cycling,
so when I saw this hub axle,
I assumed both hub and rim were 36 hole
and prepared spokes accordingly,
but once I started assembling,
I realized the hub was 32 hole.
Since the customer isn't the original owner of this hub,
the reason for this specification is unclear.
It's possible to convert from 120×10, so maybe that happened,
or perhaps the manufacturer prepared this specification
for mounting a non-NJS hobby race wheel
on a 110×8 track frame—
I can't say which it is.
I built a rear wheel using
an Araya Prostaff 400 tubular rim and
a Sunour Shuparubu (Suntour Superbe) double-threaded fixed gear hub.
↑Rim label
32 hole, full radial lacing pattern to JIS standard.
I'll do the truing later.
Currently, DT Swiss silver competition spokes around 300mm length
aren't in stock at the wholesaler—or rather,
they don't seem to bother keeping them in stock regularly (black ones are available),
so I used Sapim Race spokes with the same butted dimensions instead.
The hub isn't 120×10, which would mean 120mm width with 10mm diameter axle,
but rather the 110×8 standard.
The "8" doesn't mean an 8mm diameter hub axle—
it's a 10mm diameter axle with
1mm shaved off parallel on each end,
since the frame's dropout slot is 8mm wide,
this prevents the hub axle from spinning and makes it easier to secure.
Additionally, there exist frames for track cycling
where the over-locknut dimension
is 110mm width rather than 120mm
(to be clear, even in track racing 120×10 is the majority).
110×8 rear hubs
basically don't exist for anything other than track cycling,
so when I saw this hub axle,
I assumed both hub and rim were 36 hole
and prepared spokes accordingly,
but once I started assembling,
I realized the hub was 32 hole.
Since the customer isn't the original owner of this hub,
the reason for this specification is unclear.
It's possible to convert from 120×10, so maybe that happened,
or perhaps the manufacturer prepared this specification
for mounting a non-NJS hobby race wheel
on a 110×8 track frame—
I can't say which it is.