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Old 10-18-06, 10:44 AM   #1
CRG
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Rear Derailleur swap

Current I have a SRAM X-7 RD, short cage. I want to change it out for an XT or LX Shimano RD. I will also be switching shifters. Which Shimano RD would work for me? If it matters I have a 9-speed 11-34 cassette.
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Old 10-18-06, 12:44 PM   #2
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Oh yeah, forgot the OP's question. If you'll be swapping out the shifter to a compatible one you can go whatever you want. XT would be what I would aim for at a close-out price (pricepoint, whatever).
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Old 10-18-06, 12:45 PM   #3
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Oh yeah, forgot the OP's question. If you'll be swapping out the shifter to a compatible one you can go whatever you want. XT would be what I would aim for at a close-out price (pricepoint, whatever).
Thanks, do you know specifically which model I would need to get out of the XT group?
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Old 10-18-06, 12:46 PM   #4
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Jensonusa has a great price on xt

Xt rd (49$)
Xt shifter/lever combo (89$)- this is the 05 model I believe

as your cassette is 9spd I believe either of these will be fine.(someone correct me if I'm wrong)
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Old 10-18-06, 01:11 PM   #5
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You children behave! Don't make me come back there or somebody's going to get it!

The answer to your question is Razrcide, is yes the Shimano stuff will work. An nice XT (not rapidrise ) system will work just fine. Which shifter/derailer you get will depend on your current set up. If you already have levers, get the XT M750 pods. If you have intergrated shifter/levers get the M750 STI. If you want to try the Dual Control levers get the M760 STI. The M750 pods are a good value. The Dual Control stuff is very pricey.

Now behave or I'm going to turn this car around and we are going right back home!
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Old 10-18-06, 01:14 PM   #6
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You children behave! Don't make me come back there or somebody's going to get it!

The answer to your question is Razrcide, is yes the Shimano stuff will work. An nice XT (not rapidrise ) system will work just fine. Which shifter/derailer you get will depend on your current set up. If you already have levers, get the XT M750 pods. If you have intergrated shifter/levers get the M750 STI. If you want to try the Dual Control levers get the M760 STI. The M750 pods are a good value. The Dual Control stuff is very pricey.

Now behave or I'm going to turn this car around and we are going right back home!
That is exactly what I needed.

Thank You
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Old 10-18-06, 01:26 PM   #7
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An nice XT (not rapidrise ) system will work just fine.
Rapidrise will work just fine also.
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Old 10-18-06, 01:59 PM   #8
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Why would you want XT over X.7...I suggest you get a Sram X.9 RD, and just leave you shifter alone.
In other words...Shimano blows!!
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Old 10-18-06, 03:42 PM   #9
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why do you want to switch? did your SRAM not work good?
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Old 10-18-06, 03:53 PM   #10
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Rapidrise will work just fine also.
It works, I personally don't like it. I've learned how to shift normally and the Rapidrise was just too weird.
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Old 10-18-06, 03:55 PM   #11
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Originally Posted by cyccommute
It works, I personally don't like it. I've learned how to shift normally and the Rapidrise was just too weird.
Hey what is the difference between rapid rise and whatever the other version shimano makes. Are the m750 shifters rapid rise?
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Old 10-18-06, 04:08 PM   #12
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why do you want to switch? did your SRAM not work good?
It works fine, I just want/like the Shimano Dual shifters better.
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Old 10-18-06, 04:08 PM   #13
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Quote:
Originally Posted by Pheard
Hey what is the difference between rapid rise and whatever the other version shimano makes. Are the m750 shifters rapid rise?
It's not the shifter but the derailer. The Rapidrise is low normal which means that when tension is released on the cable the derailer travels inboard to the lowest gear. The cable acts to pull the chain to higher gears rather than to lower gears. It's kinda silly, actually, because the spring in the derailer can easily move the chain when going to a higher gear (a fairly low torque situation). But under high torque like pedalling up a very steep hill, you can exert much more pressure to get the bike to shift by tightening the cable. Rapidrise depends on the spring for the downshift.

Ever had a front derailer not downshift for you on a really steep hill? That's because you are trying to make the shift while depending on the return spring not the force of the cable. Suntour once made a front derailer that was high normal which shifted under high torque like a dream. If Shimano did that, I'd be all for it.
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Old 10-18-06, 04:12 PM   #14
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Originally Posted by cyccommute
It's not the shifter but the derailer. The Rapidrise is low normal which means that when tension is released on the cable the derailer travels inboard to the lowest gear. The cable acts to pull the chain to higher gears rather than to lower gears. It's kinda silly, actually, because the spring in the derailer can easily move the chain when going to a higher gear (a fairly low torque situation). But under high torque like pedalling up a very steep hill, you can exert much more pressure to get the bike to shift by tightening the cable. Rapidrise depends on the spring for the downshift.

Ever had a front derailer not downshift for you on a really steep hill? That's because you are trying to make the shift while depending on the return spring not the force of the cable. Suntour once made a front derailer that was high normal which shifted under high torque like a dream. If Shimano did that, I'd be all for it.
Oh ok, I thought you were referring to the shifters. I personally really like the trigger shifters shimano makes. So basically rapidrise costs more because it allows better shifting under higher torque such as going uphill.
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Old 10-18-06, 04:14 PM   #15
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Oh ok, I thought you were referring to the shifters. I personally really like the trigger shifters shimano makes. So basically rapidrise costs more because it allows better shifting under higher torque such as going uphill.
Cost is about the same. The rest you have turned around backwards.
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Old 10-18-06, 04:15 PM   #16
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Cost is about the same. The rest you have turned around backwards.
My bad, I meant to ask about dual control, that is the shifters. I got mixed up. What is that?
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Old 10-19-06, 09:51 AM   #17
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My bad, I meant to ask about dual control, that is the shifters. I got mixed up. What is that?
Dual Control shifts the same way that road bikes shift. The lever moves up and down to make the shift. Instead of pushing the levers with your thumbs, you press the lever down with your fingers or put your fingers under it and push it up. It's pretty slick but a little weird. They don't require too much force and would be ideal for people with weaker hands.
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