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  1. #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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  2. #2
    sarcasm meter: jerk mode santiago's Avatar
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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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    CRG
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    Quote Originally Posted by santiago
    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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    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)

  5. #5
    Mad bike riding scientist cyccommute's Avatar
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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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    CRG
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    Quote Originally Posted by cyccommute
    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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  7. #7
    one less horse cryptid01's Avatar
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    Quote Originally Posted by cyccommute
    An nice XT (not rapidrise ) system will work just fine.
    Rapidrise will work just fine also.

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    Senior Member FreeRidin''s Avatar
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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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    Lost in the Black Hills mx_599's Avatar
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    why do you want to switch? did your SRAM not work good?

  10. #10
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by gastro
    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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    Quote 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?

  12. #12
    CRG
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    Quote Originally Posted by mx_599
    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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  13. #13
    Mad bike riding scientist cyccommute's Avatar
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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.
    Stuart Black
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    Quote 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.

  15. #15
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Pheard
    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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    Quote Originally Posted by cyccommute
    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?

  17. #17
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Pheard
    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.
    Stuart Black
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    Twisting Down the Alley. Misadventures in tornado alley.
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