I picked up a 2006 3x9 dual suspension MTB with XT RD-M750 rear derailleur and SLX Mega 9 shifters. The RD has a cracked ceramic jockey wheel.
I'm converting to a 1x9 with 28T chainring (for smaller kid) and keeping the old Shimano 11x34T cassette. Would this new setup get smoother shifting with:
- Replacing the the jockey wheel on old RD-M750 or
- Replace RD-M750 with RD-592 Shadow SGS?
Thank you for the feedback. The derailleur is still functional and I didn’t notice side to side movement.
The bike is a fixer upper for a growing kid who will likely outgrow it in 2-3 years. I’m on a tighter budget and opting to get new jockey wheels and some tuning on the derailleur. Then swapping out the 175mm crank that’s way to big for a 4’9 kid. Hope it works well enough to keep him interested in riding.