Originally Posted by
steelbikeguy
I pulled out the bike, got the tripod and camera, and took a shot of the Cyclone GT Mk II that's currently on the bike.
As can be seen, the pulley cage is a bit out of alignment with the cassette and wheel. The derailleur hanger has been checked and tweaked before to address this sort of visible misalignment, and was clearly not the problem.
I will note that if I grab the bottom of the pulley cage, it doesn't take much force to deflect it 5 or 10mm to the right.
I'm inclined to attribute this to wear or slop in the derailleur somewhere. Or just some flex? Not sure.
Steve in Peoria
Cheers, that's definitely worth trying, looks very similar to what I'm getting.
My good RD moves about 3 or 4mm under medium finger pressure.
But I've reassembled my RDs several times, I think it's just flex.
Some amount of flex is probably a good thing, and is why it still works 40 years later and hasn't snapped off yet.