347CX wrote:
So I've got a Hammer and an 8 speed drivetrain with my Allez. 99.9999% of the year I used Trainerroad with ERG mode, so I didn't care much about indexing, it was just set it in one gear and forget it. But I did some zwift racing recently and had annoying chain noise at the smaller 3 cogs (like 12-13-14, I forget what exactly I have). I went as far as totally setting up my derailleur on the trainer, removing the cable, setting the high limit screw and reindexing and I still can't get rid of the rub/noise at the smaller end of the cassette. As far as i'm aware, this experience isn't unique to my situation, I've seen folks with different drivetrains/trainer models complain about similar difficulties. So if you're on zwift this may be a thing for you, but if you're doing erg mode workouts you might not have to worry much about readjusting.
I have a 105 cassette on the Hammer an have the same thing. I only train in ERG on TrainerRoad, so not a problem. But only the 16t is quiet. Every other gear, even just one cog left or right, are much much louder.