I got myself a new center gauge.
I didn't throw out the old one, so you could say I added to my collection,
but since I'm not alternating between old and new depending on the situation,
I suppose it really is a replacement.
There's no issue with accuracy, but the contact point on the rim
seemed to be wearing down, so
I picked up a new one.
Perhaps due to manufacturing tolerances, the contact plate has lines on both ends,
but even with a 700C rim, it won't make contact there.
Anyway,
a customer left me two Dura-Ace carbon rim front wheels on consignment.
First up is the 7801.
Both wheels need truing work and hub overhaul.
The customer said, "When I'm pushing hard through the hairpin at Suzuka,
I feel a loss of speed and notice the wheel deflecting.
Do they seriously think pro riders use wheels like this?"
But with this rim depth and 16 spokes, there's not much you can do about it.
Apparently a nearby shop tensioned it as much as they could,
but by my assessment too, it was at the limit.
No radial runout, and the lateral offset was barely a sheet of paper—
some gauges wouldn't even detect it.
Before truing, I'm doing the hub overhaul.
A plastic part that prevents the nipple from falling into the hub
when a spoke breaks was missing.
The grease color has faded, and it looks like the oil has dried out.
This hub uses loose ball bearings instead of a retainer, and
even when threading the hub axle straight through the hub shell,
there's a gap larger than the ball diameter between the cone and axle.
So you can't set up the bearing without applying grease to the cone.
That's fine, but you have to be careful not to drop the balls
into the hub shell.
Next is the 7850.
Dead center, virtually no runout.
Really dialed in. Excellent work.
So the job is basically just the hub overhaul.
Dead center!
The new center gauge has a tapered tip on the measuring point.
Plus, the dropouts reflect off it, making gaps harder to see even if they exist.
The Park Tool truing stand has also become harder to use, but
is that only because I'm used to the old design?
The new children's TV hosts and period dramas get told
"the old one was better," so maybe it's just a matter of habit.
Though I do have a hard time with Kōji Ishizaka.
Personally, I think Akira Nishimura, the second host, was the best.
I didn't throw out the old one, so you could say I added to my collection,
but since I'm not alternating between old and new depending on the situation,
I suppose it really is a replacement.
There's no issue with accuracy, but the contact point on the rim
seemed to be wearing down, so
I picked up a new one.
Perhaps due to manufacturing tolerances, the contact plate has lines on both ends,
but even with a 700C rim, it won't make contact there.
Anyway,
a customer left me two Dura-Ace carbon rim front wheels on consignment.
First up is the 7801.
Both wheels need truing work and hub overhaul.
The customer said, "When I'm pushing hard through the hairpin at Suzuka,
I feel a loss of speed and notice the wheel deflecting.
Do they seriously think pro riders use wheels like this?"
But with this rim depth and 16 spokes, there's not much you can do about it.
Apparently a nearby shop tensioned it as much as they could,
but by my assessment too, it was at the limit.
No radial runout, and the lateral offset was barely a sheet of paper—
some gauges wouldn't even detect it.
Before truing, I'm doing the hub overhaul.
A plastic part that prevents the nipple from falling into the hub
when a spoke breaks was missing.
The grease color has faded, and it looks like the oil has dried out.
This hub uses loose ball bearings instead of a retainer, and
even when threading the hub axle straight through the hub shell,
there's a gap larger than the ball diameter between the cone and axle.
So you can't set up the bearing without applying grease to the cone.
That's fine, but you have to be careful not to drop the balls
into the hub shell.
Next is the 7850.
Dead center, virtually no runout.
Really dialed in. Excellent work.
So the job is basically just the hub overhaul.
Dead center!
The new center gauge has a tapered tip on the measuring point.
Plus, the dropouts reflect off it, making gaps harder to see even if they exist.
The Park Tool truing stand has also become harder to use, but
is that only because I'm used to the old design?
The new children's TV hosts and period dramas get told
"the old one was better," so maybe it's just a matter of habit.
Though I do have a hard time with Kōji Ishizaka.
Personally, I think Akira Nishimura, the second host, was the best.