9 and 10 speed compatibility
I just want to know what 9 speed components I can use on 10 speed drivetrain. If I have 10 speed cassette and 10 speed shifter, can I use (1) 9 speed rear derailleur? (2) 9 speed front derailleur? (3) 9 speed crankset? (4) 9 speed chain?
Thanks!