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How do you block off the big ring?

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  • January 18, 2012 at 8:09 pm #14844
    Raleigh

    Well, the question’s in the title.

    How can you stop the big ring from being shifted to, I really need to know.

    If you use the derailleur limiters, will you have to retension the cables?

    Thanks Forumers.

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  • January 19, 2012 at 12:26 pm #661907
    0
    joemmo

    whatever you do, don’t try
    whatever you do, don’t try and just lock off the mech in the smaller chainring without slackening the cable. It’s easy to wreck the mechanism of a sti type lever by trying to shift it into a position that the cable travel won’t allow.

    I found this out the hard way when using a triple lever on a double setup. The bike is now running as a 1×9…

    January 18, 2012 at 9:05 pm #661905
    0
    dave atkinson

    if you just want to use the
    if you just want to use the inner ring and the limit screws don’t go in far enough you could just shift into big, undo the cable and the mech will fall back to the inner position. tighten the cable clamp up again and you won’t be able to shift even if you want to.

    January 18, 2012 at 8:27 pm #661903
    0
    Raleigh

    Its for junior gears, so
    Its for junior gears, so instead of a double I would just have a single, 34t (compact) chainring.

    Not ideal, but otherwise I’ll need a 42t chainring before Saturday 12am with 110mm BCD and 5 arms.

    Gear restrictions are 6.92 m, or 44 x 13

    January 18, 2012 at 8:24 pm #661901
    0
    pixelmix

    The limit screws do not
    The limit screws do not affect cable tension at all. If you only want to use the inner rings, you would just fully screw in the outer limit screw (normally marked H, sometimes located on the inside) to prevent the mech shifting up to the biggest ring position.

    The cable tension should still be fine for the inner and middle shifts, but you will meet some resistance if you try to go further. If you are struggling to shift into the middle ring having done this, you would need to back it out again slightly.

    I used my mountain bike as a 2×9 bike by removing the biggest ring and just turning the outer limit screw in sufficiently. It should work fine.

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