Another day working on wheels (and so on).
I received the rear wheel of a WH-R9100-C24 from a customer.
It's already been disassembled.
It fell into a ditch and bent the bead hook on the rim,
so the customer wants the rim replaced.
This is a standard clincher rim model.
With tubeless rim versions, reusing spokes gets tricky
(often requiring rim height changes or spoke modifications),
but for some reason (→here) the R9100 series doesn't have a tubeless version,
so no worries there.
And here's another nice thing about the C24.
Except for the WH-9000 tubular version which uses Optibars 21H,
the C24 rear wheel is a standard 20H with 10H on each side.
Which means I can do repairs with generic parts.
I rebuilt it with the AL22W rim.
The original spec doesn't weave the final cross on both sides,
but you could weave just the anti-freewheel side and tie it off...except
I'm rebuilding it to the original spec, so no tie-off. Or rather, I can't do one.
At the customer's request, I used purple nipples.
The C24 clincher front rim comes in under 400g, so
rebuilding with the AL22W at around 435g
I thought would make it noticeably heavier,
but the rear rim is an offset rim design and this one weighs 421g.
Since the AL22W rim is tubeless-ready,
even if the customer has no plans to use tubeless tires,
the rim tape needs to be a tape type, not a band type.
Tape-type rim tape is lighter, so
in the end, the weight difference including rim tape
between before and after the rebuild came to only about 10g gain—less than I expected.
I received the rear wheel of a WH-R9100-C24 from a customer.
It's already been disassembled.
It fell into a ditch and bent the bead hook on the rim,
so the customer wants the rim replaced.
This is a standard clincher rim model.
With tubeless rim versions, reusing spokes gets tricky
(often requiring rim height changes or spoke modifications),
but for some reason (→here) the R9100 series doesn't have a tubeless version,
so no worries there.
And here's another nice thing about the C24.
Except for the WH-9000 tubular version which uses Optibars 21H,
the C24 rear wheel is a standard 20H with 10H on each side.
Which means I can do repairs with generic parts.
I rebuilt it with the AL22W rim.
The original spec doesn't weave the final cross on both sides,
but you could weave just the anti-freewheel side and tie it off...except
I'm rebuilding it to the original spec, so no tie-off. Or rather, I can't do one.
At the customer's request, I used purple nipples.
The C24 clincher front rim comes in under 400g, so
rebuilding with the AL22W at around 435g
I thought would make it noticeably heavier,
but the rear rim is an offset rim design and this one weighs 421g.
Since the AL22W rim is tubeless-ready,
even if the customer has no plans to use tubeless tires,
the rim tape needs to be a tape type, not a band type.
Tape-type rim tape is lighter, so
in the end, the weight difference including rim tape
between before and after the rebuild came to only about 10g gain—less than I expected.