Ajax Bay
Guru
- Location
- East Devon
To help with Q1
Spoke failure is not infectious between wheels! The other one you've fitted will hang
on its own spokes.https://bike.shimano.com/products/components/pdp.P-WH-RS100-CL-R.html
This wheel has 24 plain gauge spokes.
You describe the spoke as having failed 2" from the hub. This is unusual: these spokes normally fail through fatigue after millions of revolutions, if ever - at the (work hardened) bend by the hub flange.
I recommend you remove the cassette and carefully inspect (feel) the remaining right hand side spokes. I suspect your spoke parted where it had been damaged by a chain overshifting inside the large sprocket. I cannot think of another reason for a spoke parting there (part way up its length). Report back.
Anecdotally, I recently went to my LBS to retrue a wheel on their jig and during that a spoke parted on a tensioning twist of my spoke key. I had damaged half the spokes (either the trailing or the leading 8) in the manner described above (but do not remember ever doing so). I bought 8 spokes and replaced/relaced the lot.
