Another wheel day (details omitted).
A customer entrusted me with a Dura-Ace track small flange front hub,
HB-7710.
For some reason the Dura-Ace print on the hub shell had faded,
but since it's a 36H spec usable in keirin racing,
it bears the NJS stamp mark.
When this stamp mark is at the top and readable right-side-up, I defined the right side as the nominal right side, and looking at
the right flange—
the inpoke marks are in the reverse porcupine direction, and
the left flange too—
the inpoke marks are also in the reverse porcupine direction,
so the original lacing was reverse JIS.
The stamp mark indicating manufacturing month was JF.
This means June of either 1985 or 2011,
but given the hub's vintage, the former is impossible,
so it's June 2011 manufacture.
The year alphabet cycles every 26 years,
but with a large flange hub like the HB-7600,
U (1996 or 2022), V (1997 or 2023), and so on—
if the HB-7600 doesn't get discontinued by 2027,
Z (2001 or 2027) is also theoretically possible for either year.
Without a box, and if the condition is exceptionally good,
there's a possibility the hub alone couldn't be distinguished from the version 26 years prior.
It's built.
Definitely got it built!
The rim is a Mavic Open Pro,
hub is HB-7710 36H in 88 JIS lacing,
but the customer's note said "Italian lacing, please."
Aaahhhhwwwwbwwbwwbwwbbbaawwbaaaa
I'll rebuild it later.
By the way, the customer specified DT Competition spokes,
but that length wasn't available in silver,
so I went with Sapim Race instead.
The rim sticker is applied symmetrically from both sides.
On earlier versions,
like on Ksyrium aluminum rims,
the sticker covering the weld seam on the rim joint
has "Made in France" text facing only one direction,
but these two stickers have that text string
printed on both sides, so
the basis for determining the left/right orientation of a wheel
becomes either the serial number sticker on the outer rim edge
(which disappears once rim tape is applied) or
the NJS stamp on the hub shell.
...and those are the reference images for captions above,
but since I'll be rebuilding this in Italian lacing later,
the spoke pattern alone will make left and right immediately obvious.
A customer entrusted me with a Dura-Ace track small flange front hub,
HB-7710.
For some reason the Dura-Ace print on the hub shell had faded,
but since it's a 36H spec usable in keirin racing,
it bears the NJS stamp mark.
When this stamp mark is at the top and readable right-side-up, I defined the right side as the nominal right side, and looking at
the right flange—
the inpoke marks are in the reverse porcupine direction, and
the left flange too—
the inpoke marks are also in the reverse porcupine direction,
so the original lacing was reverse JIS.
The stamp mark indicating manufacturing month was JF.
This means June of either 1985 or 2011,
but given the hub's vintage, the former is impossible,
so it's June 2011 manufacture.
The year alphabet cycles every 26 years,
but with a large flange hub like the HB-7600,
U (1996 or 2022), V (1997 or 2023), and so on—
if the HB-7600 doesn't get discontinued by 2027,
Z (2001 or 2027) is also theoretically possible for either year.
Without a box, and if the condition is exceptionally good,
there's a possibility the hub alone couldn't be distinguished from the version 26 years prior.
It's built.
Definitely got it built!
The rim is a Mavic Open Pro,
hub is HB-7710 36H in 88 JIS lacing,
but the customer's note said "Italian lacing, please."
Aaahhhhwwwwbwwbwwbwwbbbaawwbaaaa
I'll rebuild it later.
By the way, the customer specified DT Competition spokes,
but that length wasn't available in silver,
so I went with Sapim Race instead.
The rim sticker is applied symmetrically from both sides.
On earlier versions,
like on Ksyrium aluminum rims,
the sticker covering the weld seam on the rim joint
has "Made in France" text facing only one direction,
but these two stickers have that text string
printed on both sides, so
the basis for determining the left/right orientation of a wheel
becomes either the serial number sticker on the outer rim edge
(which disappears once rim tape is applied) or
the NJS stamp on the hub shell.
...and those are the reference images for captions above,
but since I'll be rebuilding this in Italian lacing later,
the spoke pattern alone will make left and right immediately obvious.