Recently swapped from a triple to a double with bash guard. I have a few questions that if someone could help with then it would be fantastic. Its a 9 speed cassette if that makes a difference.
I'm assuming I can keep my old front mech, and just alter the upper limit? Appears to work, or is this not the way to do it?
The chain keeps sliding, do I need to shorten? And how do I know how much to take off (sorry that might be a stupid question, I'm mechanically inept!)
Thanks folks

