Originally Posted by
Iride01
What are you trying to solve? Does the current DR not shift well?
Slow to shift and the pressed steel cage is so flexible and sloppy that it flexes in cross-chain situations. The plastic cogs are so loose, they go cockeyed on their axles. It's a pretty crappy example of a derailleur.
Originally Posted by
Bill Kapaun
I wouldn't go beyond a DER rated for 8 speeds.
As the # speeds increases, cages get narrower and things like chain rub become more apparent.
Even a Tourney should work adequately for 7 speed if maintained.
Cleaning & lubing the cables may seem like an upgrade?
Thanks very much for the help. The one I linked is a 7/8 speed der and if I remember correctly, the Acera was a pretty decent Shimano line. I'm not familiar enough with either road-specific gear or the era to know what was above that.
The cable system is a new Jagwire set. Shifting is nice, the tolerances are just so poor on the rear der that it makes it impossible to dial in.
Thanks very much for the help!