Originally Posted by
SJX426
If I have a 10v cassette and a 10V Ergo, Can I simply replace the 9v equivalent and be done?
The rd is a Racing T, RD01-RA309. I assume it will work with 10 speed cassette..
Your Racing-T is likely the last iteration of the 9-speed units, with the
with the new bulbous lower pivot and adjustable lower pivot tension ring. If so, then it has the new 1.50:1 actuation ratio, and therefore is 10-speed compatible.
A pic would confirm.