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  1. #1
    mtbr member
    Join Date
    Oct 2018

    down shifting problems 1-12v

    I have a 1-12 system, with a SRAM X01 shifter, SRAM GX derailleur and the cassette its a SUNRACE MZ90 11-50.

    The up gear works fine, but the down shifting its a different story, from 1 to 2 OK , but from 2 to 3 the derailler moves but it don't shift, i go more one click down and it jumps (as predicted) to the 4 gear after that all the gears work fine.

    I have tried another sunrace cassette.
    The derailleur hanger its not bend.
    The chain is below 0,5.
    The b screw its OK.
    All the gears are indexed.

    what can cause this behaviour?

  2. #2
    mtbr member
    Join Date
    Jan 2016
    I had same thing with the Eagle drivetrain when I used the trigger shifter.
    Changing to an Archer Components D1x allowed me to correct for it. Almost seems like the shift from the second largest to next cog required slight larger cable pull than other shifts.

    Sent from my SM-N960U using Tapatalk

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