Overview Chat Bike Members News Women
Viewing 16 posts - 1 through 16 (of 16 total)
  • 9 speed Ultegra STI mystery non shift question.
  • mcmoonter
    Free Member

    I fitted a second hand set of 9 speed Ultegra STIs to my touring bike. I have the same set up on a couple of other bikes but have never experienced this quirk.

    When shifting down the cassette (big to small spockets) a step at a time, then shifting back up, all is good.

    If I shift down two or more clicks when I come to shift back up again, the shifter has no resistance and induces no movement in the rear mech, letting it return to the unsprung position and shifting again it works fine.

    What is going on?

    Posted 11 years ago
    paulosoxo
    Free Member

    Aren’t they supposed to shift three gears on a mufti shift? Is the third part of the shit missing, leaving the shifter in no mans land?

    Posted 11 years ago
    Cubed
    Free Member

    Open up the lever and try WD40, you may need to drown it in the stuff. If it hasn’t been looked after there may dirt and grease interfering with the mechanism. If this doesn’t work – it’s stuffed, as a second hand mech – it will cost more to get it rebuilt.

    Posted 11 years ago
    cynic-al
    Free Member

    you mean you have to down-shift (i.e. to lower gear, bigger sprocket) twice after a multiple upshift?

    I have some ancient shifters that do this, an age thing I think.

    Posted 11 years ago
    druidh
    Free Member

    That sounds feasible.
    ____________________________________

    Hi GW – * waves *

    Posted 11 years ago
    mcmoonter
    Free Member

    you mean you have to down-shift (i.e. to lower gear, bigger sprocket) twice after a multiple upshift?

    I have some ancient shifters that do this, an age thing I think.

    Thanks folks, I’ll give it a good skoosh of WD40 and see what happens.

    Posted 11 years ago
    mattsccm
    Free Member

    I had some thing similar. WD didn’t do it so I soaked them in contact cleaner which stripped out all the grease. then I used WD. All fine now.

    Posted 11 years ago
    mtbfix
    Full Member

    I ha done old 105s that suffered the same. Even after all sorts of lube the shifter never worked properly again with an intermittent missing shift. Canned them in the end.

    Posted 11 years ago
    njee20
    Free Member

    Those Ultegra 9 speed STIs were really poor IMO! Dura Ace ones lasted forever, but the Ultegras were crap, they’ve done well to last this long!

    ____________________________________

    Hi GW – * waves *

    Seen that a few times, dunno if always from you, have I missed something!?

    Posted 11 years ago
    mcmoonter
    Free Member

    Random WD skooshing seems to have worked. It’s tricky getting it right into the gubbins while still fitted to the bars.

    Posted 11 years ago
    njee20
    Free Member

    Don’t take it apart, you’ll never get it back together again!

    Posted 11 years ago
    emanuel
    Free Member

    now you’ve cleaned it,spray some grease into it.

    Posted 11 years ago
    m1kea
    Free Member

    Comma spray grease

    Posted 11 years ago
    flap_jack
    Free Member

    mine never recovered from this despite much use of aerosols…but they did last 10 years up to that point.

    downtube shifters are the answer

    Posted 11 years ago
    mcmoonter
    Free Member

    Adds spray grease to shopping list.

    Posted 11 years ago
    stuarty
    Free Member

    Scrubs off spray grease from mcmoonters list and adds shifters

    😀

    Posted 11 years ago
Viewing 16 posts - 1 through 16 (of 16 total)

The topic ‘9 speed Ultegra STI mystery non shift question.’ is closed to new replies.

Overview Chat Bike Members News Women