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  1. #1
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    Stupid questions thread

    ITT questions can be asked that you might think are just to obvious for their own thread.


    Like does chain length affect shifting performance.

    I have a new derailleur for the Mayor and can't get all the gear shifts out of the shifter/ derailleur. It won't go into the top 42 cog when adjusted for the bottom 10 cog. Is my chain to short? Or do I need to pair the shifter to the derailleur. I'm trying to use an sram x7 shifter with sram GX rear.

  2. #2
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    Isn't the x7 a 10 speed shifter not 11. Are you trying to use it on an 11 speed cassette and derailleur?

  3. #3
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    X7 is 10 speed and yes the derailleur is 11. I think I need a new shifter and cassette as well as chain.

  4. #4
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    What are you trying to achieve, a 10 speed or 11 speed?

    Assuming it is 10 speed, given that is the max your shifter will handle, you need to make sure the derailleur has the same pull ratio that the proper 10 speed derailleur would. As long as the pull ratio is the same, the derailleur would not care how many speeds the drive train is.

  5. #5
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    Assuming limit screws are adjusted properly, it sounds like you're not getting the full shift range. x7 shifters use SRAM's "Exact Actuation" and their 11-speed GX uses "X-Actuation". different pull ratios trying to mess you up again. I'd get an 11-speed GX shifter, or the 10-speed GX derailleur.
    "a hundred travel books isn't worth one real trip"

  6. #6
    turtles make me hot
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    I don't think the X7 derailleur will climb up onto the 42. One of my friends did a one up and it worked like crap. He went GX all around and it all works nice now.
    I like turtles

  7. #7
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    Quote Originally Posted by NYrr496 View Post
    I don't think the X7 derailleur will climb up onto the 42. One of my friends did a one up and it worked like crap. He went GX all around and it all works nice now.
    Cool. I've been struggling with a one up 42 and an x7 shifter and rear since the get go. I'm gonna need a new shifter and cassette. I'll see how it goes from there.

  8. #8
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    The X7 shifter is 10 speed, and GX derailleur is designed for 11 speed. You never told us the number of cogs on your cassette so we can't help.

  9. #9
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    Quote Originally Posted by Tiboy View Post
    The X7 shifter is 10 speed, and GX derailleur is designed for 11 speed. You never told us the number of cogs on your cassette so we can't help.
    10 on the cog. I uunderstand my problem now. I just need to replace the drivetrain if I want the 42 to run smooth. Or go with an x9 derailleur and hope for the best.

  10. #10
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    Quote Originally Posted by NYrr496 View Post
    I don't think the X7 derailleur will climb up onto the 42. One of my friends did a one up and it worked like crap. He went GX all around and it all works nice now.
    My X7 works just fine with the WolfTooth 42. It's all about adjustment.

  11. #11
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    X9 and GX 10-speed with both go up to 42T no problem. And both will work with an x7 10speed shifter. I'd go with the GX 10-speed derailleur and be done with it.

    An x7 10-speed derailure should get up to a 42T cog, but any more, finding an x7 10-speed derailure could be a challenge. Not what the OP has anyway, so entirely semantics.
    "a hundred travel books isn't worth one real trip"

  12. #12
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    I'm really psyched with all the responses. I've learned a lot that's obvious.

  13. #13
    All fat, all the time.
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    Are people going to make fun of me for trying 650B+ this summer?
    I'm worried. Been fat since'11. I think I may get dirty looks.

  14. #14
    turtles make me hot
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    Quote Originally Posted by Shark View Post
    Are people going to make fun of me for trying 650B+ this summer?
    I'm worried. Been fat since'11. I think I may get dirty looks.
    My entire Sunday morning zoo crew rides fat, 29+ or b+. The only guy we goof on shows up with a regular ol' 29er. I suggested we create a skinny tire permit to ride with us.
    I like turtles

  15. #15
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    Quote Originally Posted by Damon777 View Post
    My X7 works just fine with the WolfTooth 42. It's all about adjustment.
    Maybe it was bigger than 42 then. He had the longer b screw and everything. More than once, he would shift onto the one up cog and it would jam up his drivetrain. He switched to GX shifter and derailleur and a Shimano XT 11 speed cassette and end of problems.
    I like turtles

  16. #16
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    I know the previous year shimano stuff didn't play well with 42T cogs unless they used a longer b-screw or a goat link. If it was really old SRAM stuff, might have had a similar problem, but I know my 3-4 year old x9 derailleur worked fine with it.

    And 29er for life. 29+ would be better, except the tires are just stupid expensive.
    "a hundred travel books isn't worth one real trip"

  17. #17
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    good luck solving your problem

  18. #18
    turtles make me hot
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    Quote Originally Posted by watts888 View Post

    And 29er for life. 29+ would be better, except the tires are just stupid expensive.
    WTB Rangers are 60 bucks a pop. Totally reasonable.
    I like turtles

  19. #19
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    I have a surrace 11-42 and works flawlessly with x7, need to adjust properly, is chain long enough?
    Last edited by Blaster182; 02-18-2017 at 04:43 PM. Reason: Error

  20. #20
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    Quote Originally Posted by Blaster182 View Post
    I have a surrace 11-42 and works flawlessly with x7, need to adjust properly, is chain long enough?
    I think that was my main problem. I'm getting a new chain before anything else right now. I've switched over to my X9 and it shifts great until the chain gets tight.

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