Shimano Compatability

[ronaldbenitez]

Are Shimano 105 st-5600 compatible with Shimano Ultegra fd-6700?

 

[oldbobcat]

I've been told by Shimano reps that 5700 and 6700 front derailleurs are not compatible with older 5600 and 6600 levers. And vice-versa. The pull rates are different. But I never tried it, so I'm prepared to be told I'm full of sh*t, or that I might get them to work together with some creative cable routing.

Also, triples require symmetric chains.

 

[alfeng]

FWIW. My understanding is that oldbobcat is correct that the pull rate on the Shimano 5700 & 6700 front derailleurs is different than the pull rate on the Shimano 5600 & 6600 front derailleurs ...

It is also my understanding that the pull is MORE for the 5700 & 6700 front derailleurs ...

So, if THAT is correct, then you CAN use one of a 5600 series 105 shifter's 'extra' indexing indents which would typically be used to move the front derailleur's cage between the three chainrings of a Triple Crankset to move the 6700 front derailleur cage sufficiently between the inner & outer chainring on a Double Road Crankset ...

• as I have indicated in the past, I have successfully mated a 9-speed 105 shifter to an 8-speed XT (FD-739) front derailleur with a Double Road Crankset ... AFAIK, some 8-speed 105 shifters & all post-8-speed 105 shifters are Triple-capable (a good thing, IMO, because it allows some flexibility in mating Shimano shifters with unauthorized front derailleurs)

[*] I have also successfully mated a Campagnolo non-Chorus QS front shifter to a non-QS specific Campagnolo front derailleur with a Double Road Crankset