Another day, another wheel (and so on).
Continuing from yesterday, it's the rear wheel. I'm swapping the rim that was built with a CX75 hub
from an Iron Cross to a WTB Frequency i19.
It's all Competition-laced JIS style,
but given the centering issue with the front wheel's second build
After investigating, this one also shows centering drift toward the loose side when tightened.
With years of use, there's barely any lateral runout—not the kind that develops over time.
So either it was off-center from the start, or the spoke truing was done without a centering gauge.
The front hub from yesterday had smooth rotation with no sign of grease loss,
so I partially withdrew the hub axle and greased it through the gap.
When doing this, to avoid sand getting trapped, I blow out the seal dirt first
(the image above is the rear hub, but it's in the same condition)
This time, the rear hub's rotation indicated grease loss,
so I completely disassembled it, cleaned it, and then regreased it.
before
after
Built.
FH-CX75 28H semi-competition four-cross JIS lacing with crossed pattern.
Like the front wheel, there's another one to rebuild here too.
If I could compare these two, I could easily explain what
asymmetrical, different-spoke lacing looks like...
Built.
Didn't get to the crossed pattern. I'm done for today.
Before disassembling the second rear wheel, I didn't use a centering gauge.
The reason is:
The rim had lateral runout from warping.
The rim at the very top of the image is severely warped,
and there's another one where I can detect faint warping against a glass surface plate,
so while the customer said they don't need the rims anymore,
I'll return the two that are reusable.
Continuing from yesterday, it's the rear wheel. I'm swapping the rim that was built with a CX75 hub
from an Iron Cross to a WTB Frequency i19.
It's all Competition-laced JIS style,
but given the centering issue with the front wheel's second build
After investigating, this one also shows centering drift toward the loose side when tightened.
With years of use, there's barely any lateral runout—not the kind that develops over time.
So either it was off-center from the start, or the spoke truing was done without a centering gauge.
The front hub from yesterday had smooth rotation with no sign of grease loss,
so I partially withdrew the hub axle and greased it through the gap.
When doing this, to avoid sand getting trapped, I blow out the seal dirt first
(the image above is the rear hub, but it's in the same condition)
This time, the rear hub's rotation indicated grease loss,
so I completely disassembled it, cleaned it, and then regreased it.
before
after
Built.
FH-CX75 28H semi-competition four-cross JIS lacing with crossed pattern.
Like the front wheel, there's another one to rebuild here too.
If I could compare these two, I could easily explain what
asymmetrical, different-spoke lacing looks like...
Built.
Didn't get to the crossed pattern. I'm done for today.
Before disassembling the second rear wheel, I didn't use a centering gauge.
The reason is:
The rim had lateral runout from warping.
The rim at the very top of the image is severely warped,
and there's another one where I can detect faint warping against a glass surface plate,
so while the customer said they don't need the rims anymore,
I'll return the two that are reusable.