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Di2 ultegra gear jumping

  • 16-05-2014 10:28pm
    #1
    casion3
    Registered Users, Registered Users 2 Posts: 148 ✭✭


    Anybody have any thoughts on this.
    Ultegra di2 running 11 28 jumping out of 24 (second largest sprocket ) tried adjusting to compensate with no joy. Rest of gears appear ok

    Can't see ann damage on 24 sprocket. Help please


Comments

  • #2
    ht9zni1gs28crp
    Closed Accounts Posts: 1,011 ✭✭✭ht9zni1gs28crp


    Have you tuned it according to the manual? Ie run the chain into the 5th cog down, press down on the button on the display for 20secs until it flashes, then use the shifter to adjust the derailleur up and down until you are satisfied of no noise north or south of the the 5th gear range. Di2 will adjust the rest after a while...


  • #3
    clog
    Registered Users, Registered Users 2 Posts: 1,100 ✭✭✭clog


    Try indexing from the 24t sprocket (you can set gears from any sprocket). You may also have reached the end of the adjustment range (the mech will only adjust so many steps in each direction). Take out the battery while adjusted as far as you can in the required direction this should re set the adjustment mid point and let you move it further.

    If this doesn't work and it is definitely not the cassette you may need to get the system checked/updated. I have the e-tube software and interface unit if you are stuck and about the Wicklow/Wexford area.


  • #4
    pprendeville
    Registered Users, Registered Users 2 Posts: 2,907 ✭✭✭pprendeville


    Is the chain directly inline with the 24 tooth cog. If it is then it might be the chain that needs replacing. Check with a chain wear tool.


  • #5
    Mugser
    Registered Users, Registered Users 2 Posts: 523 ✭✭✭Mugser


    Google led me here.
    Just wondering what was the solution to this? I'm in the middle of setting up 11 speed Di2 here and on the e-tube it shows 1 gear out, i.e shows 5 when it's actually on 4.
    Any ideas?


  • #6
    NBar
    Registered Users, Registered Users 2 Posts: 591 ✭✭✭NBar


    I dropped my bike with Di2 last year and the hanger got bent slightly and it was only when in the middle range did I have problems until I got it sorted the next day


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  • #7
    Unknown Soldier
    Registered Users, Registered Users 2 Posts: 2,124 ✭✭✭Unknown Soldier


    NBar wrote: »
    I dropped my bike with Di2 last year and the hanger got bent slightly and it was only when in the middle range did I have problems until I got it sorted the next day

    This.

    It can be so slight a bend that you wouldn't even notice.

    I am now ultra careful not to hit the RD when carrying the bike.


  • #8
    clog
    Registered Users, Registered Users 2 Posts: 1,100 ✭✭✭clog


    Mugser wrote: »
    Google led me here.
    Just wondering what was the solution to this? I'm in the middle of setting up 11 speed Di2 here and on the e-tube it shows 1 gear out, i.e shows 5 when it's actually on 4.
    Any ideas?

    Have you set the high/low yet, shift rear mech as far as it can go and start from the smallest sprocket. Once it is changing through the required number of gears you can then fine tune.


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