Originally Posted by
fly:yes/land:no
okay... i come at this from someone who has also done this for a living. i am well aware of the frequency of jabbed up hangers. i am also aware of the frequency of cable tension issues. you are really going to ask a guy who has seemingly no idea how set screws work to look for a bent derailleur hanger? i think we both know that spotting a bent hanger (let alone fixing it) is much more difficult than spinning an adjuster a few clicks clockwise or counter clockwise.
you are certainly correct that it could be bent, but why wouldn't he at least try to adjust the cable before calling the shop? this comes with the obvious caveat that if the derailleur is in fact what is pinging the spokes, then there is a lot more wrong than cable tension.
This is what I do in real life... making remote diagnosis is a pita as not only can you not really see the problem you have to deal with people who don't understand what the problem is.
Most of the time I give lessons in theory instead of trying to diagnose a problem with less than stellar pics or inadequate video as once you have the theory doing the work becomes much easier.
Lots of folks said to adjust the derailleur... this is good advice.
Park has excellent instructions on how to do this.
Had to point out that if the hanger is bent it will be a waste of time so to look there first to ensure it is reasonably aligned.
If a chain has a stiff link it does not have to be replaced... a little gentle side to side flexing usually addresses that.