Today, another wheel (and so on). First appeared on March 1, 2013,
and for the full five years since then
there hasn't been a single day I've opened the shop without building a wheel
（except during the period when the truing stand was broken）.
Once you get the hang of it, wheel building itself isn't particularly difficult,
so building at least one wheel a day is no big deal,
but what amazes me is that the demand never lets up.
Anyway,
today, another wheel (and so on).
I received the rear wheel of a customer's FF Yamaguchi F4R.
The rim is buckled and done for.
↑From the freewheel side
↑From the non-freewheel side
↑From the outer circumference
There are traces where Swissstop's Yellow King brake pads melted and stuck on,
but this time rim heat buildup doesn't seem to be the main cause.
According to the customer, they got hit from the side by another vehicle during a race,
and to avoid crashing they ended up hitting a large curb hard.
Since this rim was 20.8mm wide,
I'm rebuilding it with the Noma Labo Wheel New No. 2 rim (20.5mm width).
The rear hub bearings aren't damaged so I'll reuse the hub as-is.
This rim was built as a reverse rim,
but upon inspection it really was a reverse rim.
Old Colimas and current Campagnolo Fulcrums are reverse rims,
but with Campagnolo Fulcrum, G3 and 2:1 spoke patterns on rear wheels are the norm
so you only think about reverse rims on front wheels.
A reverse rim on a rear wheel with equal spoke count on both sides is genuinely rare.
There were spoke holes drilled offset on both the inner and outer circumferences.
Some rims have no offset drilling on the inner side and only on the outer side for tool clearance reasons.
↑The hole offset directions match up.
Disassembled.
Originally it was fully Aero Lite 4-4 lacing, but I've gotten permission from the customer
to increase the spoke weight ratio on the freewheel side during the rebuild.
Now, the F4R has external nipples,
and the Noma Labo Wheel No. 2 rim is 38mm deep with internal nipples.
If the rim depth difference between the F4R and the Noma Labo rim, combined with the spoke length correction for internal nipples, happened to balance out
and the spokes could be reused,
I was thinking of reusing them even if it meant 4-4 lacing instead of 4-6.
Unequal lacing on each side isn't as effective as different diameters,
so with 4-4 lacing you can make up for a lot with proper truing and tensioning.
But the F4R, true to its name, isn't actually a 4cm rim—
the OEM name is WH-R38CF and the rim depth is also 38mm,
so reusing the non-freewheel side spokes wasn't possible.
If reusing isn't possible, there's no need to go with 4-4 lacing, so I'll do 4-6 instead.
Built.
DT 240 hub, 24 spoke, black half-comp 4-6 lacing with cross pattern.
↑Set against the old rim side by side. The hole offsets are opposite directions.
and for the full five years since then
there hasn't been a single day I've opened the shop without building a wheel
（except during the period when the truing stand was broken）.
Once you get the hang of it, wheel building itself isn't particularly difficult,
so building at least one wheel a day is no big deal,
but what amazes me is that the demand never lets up.
Anyway,
today, another wheel (and so on).
I received the rear wheel of a customer's FF Yamaguchi F4R.
The rim is buckled and done for.
↑From the freewheel side
↑From the non-freewheel side
↑From the outer circumference
There are traces where Swissstop's Yellow King brake pads melted and stuck on,
but this time rim heat buildup doesn't seem to be the main cause.
According to the customer, they got hit from the side by another vehicle during a race,
and to avoid crashing they ended up hitting a large curb hard.
Since this rim was 20.8mm wide,
I'm rebuilding it with the Noma Labo Wheel New No. 2 rim (20.5mm width).
The rear hub bearings aren't damaged so I'll reuse the hub as-is.
This rim was built as a reverse rim,
but upon inspection it really was a reverse rim.
Old Colimas and current Campagnolo Fulcrums are reverse rims,
but with Campagnolo Fulcrum, G3 and 2:1 spoke patterns on rear wheels are the norm
so you only think about reverse rims on front wheels.
A reverse rim on a rear wheel with equal spoke count on both sides is genuinely rare.
There were spoke holes drilled offset on both the inner and outer circumferences.
Some rims have no offset drilling on the inner side and only on the outer side for tool clearance reasons.
↑The hole offset directions match up.
Disassembled.
Originally it was fully Aero Lite 4-4 lacing, but I've gotten permission from the customer
to increase the spoke weight ratio on the freewheel side during the rebuild.
Now, the F4R has external nipples,
and the Noma Labo Wheel No. 2 rim is 38mm deep with internal nipples.
If the rim depth difference between the F4R and the Noma Labo rim, combined with the spoke length correction for internal nipples, happened to balance out
and the spokes could be reused,
I was thinking of reusing them even if it meant 4-4 lacing instead of 4-6.
Unequal lacing on each side isn't as effective as different diameters,
so with 4-4 lacing you can make up for a lot with proper truing and tensioning.
But the F4R, true to its name, isn't actually a 4cm rim—
the OEM name is WH-R38CF and the rim depth is also 38mm,
so reusing the non-freewheel side spokes wasn't possible.
If reusing isn't possible, there's no need to go with 4-4 lacing, so I'll do 4-6 instead.
Built.
DT 240 hub, 24 spoke, black half-comp 4-6 lacing with cross pattern.
↑Set against the old rim side by side. The hole offsets are opposite directions.