A customer brought in a Selcof 666 side ∀ rabbit wheelset for me to work on.
↑This character alone was indecipherable.
I'm provisionally calling it "rabbit".
Selcof was originally a seatpost-only manufacturer, but back when they were receiving OEM orders for seatposts from the old ITM (Italmanubrio), their Selcof-branded stems and handlebars were actually made by ITM. Later they expanded into a wide range of parts like carbon forks, but this is a wheelset (you can tell just by looking).
As you can see in the image above, the rim side finish looks like Equinox, but that's actually correct.
Nomo Lab Wheelset No. 2 uses a WH108 rim, and this one uses a WH105 rim, so they're pretty closely related. It's a fairly wide rim, but this isn't jumping on the recent trend—the serial number makes it a definite 2010 manufacture date, and it's late in that production run, so there's a good chance the wheel itself was built in 2011.
Here's the main issue. The customer wants this Shimano 10-speed freebody converted to 11-speed, but they'd prefer to avoid the cost and lead time of replacing the rear hub (rebuilding the wheel). First, I need to figure out who actually made this freebody. It says Selcof on the hub shell, but that's obviously not reliable.
It says CHO-10 SEN-09. Oh! I've seen this somewhere before (→here)! The number after CHO apparently indicates the year of manufacture, 20XX. For the basic details of what this job entails, please check the linked post. Last time, apart from machining the right end, everything just bolted on fine, but this time there were some other fitment issues to work through.
I ordered a Shimano 11-speed freebody. This one is marked CHO-16.
Of course, the dimensions of the freebody spline seating depth are different.
And as usual, the presence or absence of a flange differs.
The thickness of the freebody's end-stop spacer differs, but using the one that comes with it should work fine.
If you intentionally install it wrong, you get this.
As usual, I machined the right end flange
but ran into a problem that didn't occur last time.
The inner surface of the right end has a large bearing contact area, and it rubs against the seal of the 11-speed freebody bearing. Just tightening the right end by hand made it lock up like a fixed gear.
So I had no choice but to replace it with a right end that wouldn't cause this problem.
Done. I've confirmed that even with both ends tightened firmly with tools, the freebody rotation doesn't become sluggish.
The spline bore and hub body look very tight, but I've confirmed that even with the sprockets installed and the lockring tightened quite firmly, the sprockets don't bind on the hub body.
↑This character alone was indecipherable.
I'm provisionally calling it "rabbit".
Selcof was originally a seatpost-only manufacturer, but back when they were receiving OEM orders for seatposts from the old ITM (Italmanubrio), their Selcof-branded stems and handlebars were actually made by ITM. Later they expanded into a wide range of parts like carbon forks, but this is a wheelset (you can tell just by looking).
As you can see in the image above, the rim side finish looks like Equinox, but that's actually correct.
Nomo Lab Wheelset No. 2 uses a WH108 rim, and this one uses a WH105 rim, so they're pretty closely related. It's a fairly wide rim, but this isn't jumping on the recent trend—the serial number makes it a definite 2010 manufacture date, and it's late in that production run, so there's a good chance the wheel itself was built in 2011.
Here's the main issue. The customer wants this Shimano 10-speed freebody converted to 11-speed, but they'd prefer to avoid the cost and lead time of replacing the rear hub (rebuilding the wheel). First, I need to figure out who actually made this freebody. It says Selcof on the hub shell, but that's obviously not reliable.
It says CHO-10 SEN-09. Oh! I've seen this somewhere before (→here)! The number after CHO apparently indicates the year of manufacture, 20XX. For the basic details of what this job entails, please check the linked post. Last time, apart from machining the right end, everything just bolted on fine, but this time there were some other fitment issues to work through.
I ordered a Shimano 11-speed freebody. This one is marked CHO-16.
Of course, the dimensions of the freebody spline seating depth are different.
And as usual, the presence or absence of a flange differs.
The thickness of the freebody's end-stop spacer differs, but using the one that comes with it should work fine.
If you intentionally install it wrong, you get this.
As usual, I machined the right end flange
but ran into a problem that didn't occur last time.
The inner surface of the right end has a large bearing contact area, and it rubs against the seal of the 11-speed freebody bearing. Just tightening the right end by hand made it lock up like a fixed gear.
So I had no choice but to replace it with a right end that wouldn't cause this problem.
Done. I've confirmed that even with both ends tightened firmly with tools, the freebody rotation doesn't become sluggish.
The spline bore and hub body look very tight, but I've confirmed that even with the sprockets installed and the lockring tightened quite firmly, the sprockets don't bind on the hub body.