Originally Posted by
elladaddy
Andy,
Do you know if Tiagra 4700 has this same "Servo-Wave" action you so excellently described the 105 and above seem to have?
I didn't really follow all the technical explanations but I went through this a couple years ago and found out that Tiagra 4700 derailleurs were designed to be compatible with the new generations of 105 and Ultegra re: cable pull.
If that's what you're asking. If not, carry on.