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Shimano 105 question

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    Shimano 105 question

    Not just for him but others possibly

    Why does my 105 chain ring gear not always want to move to the larger wheel ?

    It will go over if i manage a cadence > 150, which often is not practical
    After all the adjusting on the 2 damn screws and still not any better, and even Sheldon Browns site can't help

    Could there be some damage or should I just take it apart and re attach to the frame?

    TIA

    MG
    Your parents ruin the first half of your life and your kids ruin the second half

    #2
    Sorry I am not an expert on bikes and can't answer this question

    Comment


      #3
      I would say the most obvious cause would be a slack cable to the front mech. Try and tighten it (tiny bit at a time) with the adjuster on your cable stop or shifter, depending upon your setup.

      Alternatively you could tighten the cable by undoing the bolt holding it at the front mech and pulling it with pliers. The idea is to get rid of any slack, but not to have the cable too tight to facilitate a shift down to the smaller ring.

      Other causes could be front mech too far away from chainring or the wrong shape (i.e. a double mech on a triple chainring) - but I bet the cable tension is the culprit.

      HTH.

      Comment


        #4
        ta Shim

        I'll give it a go

        MG
        Your parents ruin the first half of your life and your kids ruin the second half

        Comment


          #5
          Originally posted by Shimano105
          I would say the most obvious cause would be a slack cable to the front mech. Try and tighten it (tiny bit at a time) with the adjuster on your cable stop or shifter, depending upon your setup.

          Alternatively you could tighten the cable by undoing the bolt holding it at the front mech and pulling it with pliers. The idea is to get rid of any slack, but not to have the cable too tight to facilitate a shift down to the smaller ring.

          Other causes could be front mech too far away from chainring or the wrong shape (i.e. a double mech on a triple chainring) - but I bet the cable tension is the culprit.

          HTH.
          I have a similar problem with my XT & Shram setup, when on the smallest front, I could not drop to the two smallest on the rear. After reading a book on the subject apparently this is common!
          SA says;
          Well you looked so stylish I thought you batted for the other camp - thats like the ultimate compliment!

          I couldn't imagine you ever having a hair out of place!

          n5gooner is awarded +5 Xeno Geek Points.
          (whatever these are)

          Comment


            #6
            Originally posted by MrsGoof
            ta Shim

            I'll give it a go

            MG
            Do make sure you update us all with the outcome.

            Comment


              #7
              You may want to enlist a helpful friend if you're adjusting the cable where it connects to the mech, it can be a slight pain. Especially if the little metal cap on the end of the cable comes off and it comes apart and shreds your fingers. Aah, memories.

              Comment


                #8
                I have a car.
                Rule #76: No excuses. Play like a champion.

                Comment


                  #9
                  I have a car, and a bicycle, and a motorcycle. And I'd really love it if someone could give me a helicopter too. Anyone?

                  Comment


                    #10
                    Originally posted by Xenophon
                    I have a car.
                    I have 3 cars, 2 road bikes and 2 mountain bikes

                    Taking the cars up the Surrey hills just isn't as enjoyable
                    Your parents ruin the first half of your life and your kids ruin the second half

                    Comment

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