Sram x9 rear derailleur + Sram x7 shifters + shimano cassette (Shifting all messed?!?- Mtbr.com
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  1. #1

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    New question here. Sram x9 rear derailleur + Sram x7 shifters + shimano cassette (Shifting all messed?!?

    Hey
    First off. I know that there is a difference between shimano and sram. I know about the 2:1 ratios and 1:1 ratios for shimano and sram respectively. I just purchased a brand new X9 rear derailleur and x7 trigger shifters. Taking my deore off my bike and reconfiguring the x9 rear derailleur onto my ride I found that shifting is nice the first 3 small rear cogs, after shifting into the larger cogs - there is a large abundance of jumping around between gears when I peddle hard. If anyone has any advice or reasoning behind what is happening that would be greatly appreciated if you shared it! I was so excited and now I am stumped as to fix the problem.

    Thanks.

    Angus


    I think I set it all up according to Sram instructions.. using my old cable housing (if that has any affect - it worked nice with my old deore)

  2. #2
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    Sounds like you may need a little more cable tension. Give the barrel ajduster on the shifter a couple of turns counter clockwise to tighten the cable a little and see if it improves. The shimano cassette should be compatible with SRAM.

    Another possibility is that you may need to adjust the B-screw. Shift to the largest cog on the rear, and verify you have about 6 mm of distance between the cog and the derailleur pulley. Tighten or loosen the B-screw to acheive this distance if it's off.

    Derailleur adjustment instructions can be found here:
    http://www.parktool.com/repair/readhowto.asp?id=64

  3. #3

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    Good job! Angus_fairgrieve,

    Glad to see you brought this over to this board..

    Like I said, theres alot of good wench-heads over here that can walk you through this..
    I do all my own work but I cant exsplain $hit to a Turd..And 1 finger typing dose'nt help..

    Good luck, and enjoy your SRAM parts..

    Jake Pay, POWERED by SRAM Here..

  4. #4
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    New chain?

    In addition to making adjustments to the barrel adjusters and B screw, you may want to consider a new chain, too. This might help in that everything else i8s new, and a stretched chain could cause issues.
    'If Wal-Mart sold parachutes, who would jump?' Frank Havnoonian (quoting his father) Drexel Hill Cyclery

  5. #5
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    For me, if I change the cassette I always have to change the chain and the rings if I want the drivetrain to run smoothly.

    Wombat

  6. #6

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    I have a similar situation as angus except I am getting ghost shifting on the 3 smallest cogs on the rear when putting any torque on the peddling. The rear cogs, chain and front rings are all new. I don't know how to correct this. Can anyone give me advice on how to correct?

  7. #7
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    Have you checked your rear hanger? If it's took a knock, replace it - 10

  8. #8
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    EDIT: Oooo. Sorry for that resurrection. This software does that too? One site I frequent often pops up 'old' threads. Like five year-old ones, or older...

    Apologies...

    But, what fixed it?

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