Originally Posted by miamijim

E, Shimano changed the throw of the 77XX series shifters in 1997 to be the same as the older NON-Dura Ace throw i.e 105, rsx, 600 Ultegra so what we'd need to assume is that the 77XX derailleur throw is the same as the older NON-Dura Ace STI levers i.e. 105, RSX 600 Ultegra . I'm not an expert on this but the answer seems to be yes.

jinbossa, you got lucky and your situation is where alot of confusion comes from. If someone were to ask, "will a 77XX lever work with a 74XX deraileur?" the answer is a simple and firn NO!!. On occasion an odd combination will work, I'm sure someone has used Campy Synchros with a Shimano derailleur, Regina chain and Suntour Winner freehwheel and had it work.

Originally Posted by jimbossa

I'm confused then, because both Sheldon Brown and this other guy said differently:

Sheldon Brown's: http://www.sheldonbrown.com/dura-ace.html

British CTC: http://www.ctc.org.uk/DesktopDefault...D=3946#Shimano

I'm not saying your wrong, just really confused