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  1. #1
    mtbr member
    Reputation: Orthoguy's Avatar
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    Need help with chain ring issue.

    I have a 2012 Specialized Stump jumper elite. It has the Sram carbon S-2200 38/24 crank set. It also has the Sram X7 derailleur. I have been riding it for a year and a half and over the last few months it has been getting harder and harder to shift up to the big ring. This is my race bike so it is well maintained. The shop thinks I need to upgrade the derailleur (they say the X7 is "crap" ) but the more I research it I was wondering if it was an issue with the ring gear, specifically the pin system that lifts the chain onto the big ring. I love the 38/24 set up but the up-shifting is driving me crazy.

    Have any of you guys had this problem?

    What would be a compatible ring gear set?

    Thanks for your help.
    I'm not a vegetarian because I love animals, I just hate vegetables.

  2. #2
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    Reputation: syl3's Avatar
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    What does it mean "harder and harder" ? Do you feel this "harder" in your thumb while pushing the shifter? Or do you click like usual but it won't shift? Are you sure cable tension is ok, also did you check for friction in the cable/housing?

  3. #3
    mtbr member
    Reputation: Orthoguy's Avatar
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    It jams when trying to shift. After clicking the shifter you can see and hear the chain try to catch and then fall back to the small ring. The cable tension is appropriate (according to the shop)and I change cables every six months. In fact I was having issues with it right after they had swapped cables this last time. The odd thing is that it does not do it every time. As they say here in North Carolina it "takes spells".
    I'm not a vegetarian because I love animals, I just hate vegetables.

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