Originally Posted by Shiznaz
edit: Has anyone tried running a 7 speed downtube shifter with a 9 speed cassette? I am thinking of picking up a cheap pair as insurance in case my STI brifters die when I am on tour.
As long as you have the appropriate braze-on mounts for D.T. shifters you are good to go. Most current frames only use a cable stop as opposed to a shifter braze-on. Friction will be your friend unless you want to cough up for 9sp D.T.