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I see, that's pretty good to know.
Is there such thing as a Shimano 9sp mech with a clutch?
I have 6600 shifters I could use for CX. I have the mech too but wonder if a 9sp MTB mech has any advantages? Less chain-suck?
miro_o-
They only introduced clutch for 10 speed I think, are 9 and 10 speed not compatible?
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I'm not aware of a Shimano 9sp rear mech with a clutch - I think that came in with 10 speed - but my knowledge of Shimano derailleurs is far from exhaustive so I may be wrong. The only advantage I can think of for using a 9sp MTB mech is that they have a longer cage so you can run a bigger cassette. That's why I used one - I wanted to be able to run an 11-34 cassette with a 30-39-53 triple at the front, and needed the long cage to do so.
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I have 6600 shifters I could use for CX. I have the mech too but wonder if a 9sp MTB mech has any advantages? Less chain-suck?
The biggest difference I've notice is the narrow/wide chainring, I have a long cage derailleur on normal cassette (11-28) and never even got any chain slap.
IMHO I don't think it's a problem for road bicycle, even CX, it's more pronounced on MTB to the point they need a clutch.
TM
Brommers
edscoble
As is 6700, and while both 6600 and 6700 (and any other 10 speed Shimano road shifters) will work with a 9 speed MTB mech, as the cable pull ratios are the same, neither will work with a 10 speed MTB mech, which has a different pull ratio.