10 speed shifters with 9 speed mtb derailleur
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10 speed shifters with 9 speed mtb derailleur
I’m sure this has been answered somewhere in the forums at some point in time. I have a pair of ultegra st-6600 shifters and am looking to use them with a 9 speed mtb derailleur. Hoping to put an 11-34 or 11-36 on the rear. Anyone have any ideas as to what Specific derailleur and cassette I will need (looking to spend somewhere around $40-$70 on derailleur and $60 max on cassette)? I have a single 40t chainring up front. Any help will be greatly appreciated!
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This Deore M591 seems to be what is still readily available. https://www.universalcycles.com/shop...70&category=72. Max cog is 34T. Here's a good price on an LX cassette. https://www.universalcycles.com/shop...1&category=534
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I have found a good deal on an XTR RD-M952 Long cage and it’s before dynasys and shadow clutch. Does anyone know if this will work with my ultegra st 6600 levers and an 11-36 cassette?
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AFAIK none of the 9 speeds were rated above 34T. That doesn't mean you couldn't use a 36T in your application. It would be trial and error.
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Yes. Any 9 speed MTB rear derailleur will work with your 6600 shifters. You can also be confidant it will work with a 34T cassette.
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I've never tried this particular combination, but I've never had a problem exceeding the "max cog" specification of a rear derailleur by two or three teeth, and I've done it a bunch of times. Sometimes you have to crank the B-screw all the way down, if you're going for maximum clearance or the derailleur hanger is on the short side.
_
Downshifting onto the larger cog is supposed to be marginally slower, and less likely to work under heavy pedaling. Since I won't do that even if my drivetrain will let me, I don't see this as a big downside. And I've never been able to notice a difference anyway. Every bike I've done this to has shifted equally well before and after.
Try it... I think it'll work.
--Shannon
_
(And, no, they're not all the same length, and every manufacturer will tell you, with full documentation and a clear conscience, why theirs is the ideal length. Standardized dimensions? On a bicycle? Up with that we shall not put.)
_Downshifting onto the larger cog is supposed to be marginally slower, and less likely to work under heavy pedaling. Since I won't do that even if my drivetrain will let me, I don't see this as a big downside. And I've never been able to notice a difference anyway. Every bike I've done this to has shifted equally well before and after.
Try it... I think it'll work.
--Shannon
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I am using both 105 and Ultegra GS rear derailleurs with 10 speed brifters and 11x36 on 3 different bikes.
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I used to run a 9-speed derailleur on my X-Caliber 29er, which had a 11-36 10-speed cassette, because no one made a low-normal 10 speed derailleur. Not sure if that's changed since then, but probably not. In any case, I had to get a Tiagra flat bar road shifter because the 10 speed mountain shifters used a different pull ratio. Didn't have any issues with the 9-speed derailleur and 11-36 cassette.