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Tranny dropping out of 2nd

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    Tranny dropping out of 2nd

    Does anyone have an inclination why my 78 GS750 might be dropping out of second (and into third) when I decelerate at high RPMs? I know the clutch and springs are good because I replaced that last year thinking that would help.

    Really the only time it happens is when I'm doing 7-9K on the tach and letting off the gas completely. Might it be the gears or the forks? Any suggestions are always appreciated.

    Thanks-
    Jon
    16 KTM 1290 Super Duke GT with 175hp stock, no upgrades required...
    13 Yamaha WR450 with FMF pipe, Baja Designs street legal kit
    78 GS750E finely tuned with:

    78 KZ1000 in pieces with:
    Rust, new ignition, burnt valves and CLEAN carbs!

    History book:
    02 GSF1200S Bandit (it was awesome)
    12 Aprilia Shiver 750
    82 GS1100G

    83 Kaw 440LTD


    #2
    It's probably the gears

    Comment


      #3
      mine shifts back to neutral from second when i accelerate hard.
      i can prevent it by using the clutch to shift. i tend to shift clutchless and somehow second wont engage right...
      if youre clutching it you might want to try it without the clutch...

      Comment


        #4
        I don't know but this is a technical forum....and a family website. All freaky off topic posts should be in "off topic."

        Comment


          #5
          Domino,

          That's not the kind of tranny I use. Always got your mind in the gutter!



          GSBert,

          I'm not trying to shift. It's shifting "without my permission". This was driving me crazy when I was on the dragon at the E/SE rally. I would wrap up in second pretty high on the straighter parts and decelerate before I got into the turn. Nothing sucks more than your bike upshifting on its own while you are executing a difficult turn. Scared the crap out of me a few times...8O

          -j
          16 KTM 1290 Super Duke GT with 175hp stock, no upgrades required...
          13 Yamaha WR450 with FMF pipe, Baja Designs street legal kit
          78 GS750E finely tuned with:

          78 KZ1000 in pieces with:
          Rust, new ignition, burnt valves and CLEAN carbs!

          History book:
          02 GSF1200S Bandit (it was awesome)
          12 Aprilia Shiver 750
          82 GS1100G

          83 Kaw 440LTD

          Comment


            #6
            Bent shift forks can make it not seat into gear the whole way when you shift Jon. That or worn out dogs on the gears.

            Comment


              #7
              Originally posted by jonr
              Nothing sucks more than your bike upshifting on its own while you are executing a difficult turn. Scared the crap out of me a few times...8O

              -j
              OK. Find out what's causing it and then teach the other gears to do it too. Forget roadracing and think dragracing!
              Scotty would pay big bucks for a Buell gear box that did this!

              Comment


                #8
                Originally posted by 80gs1000e
                I don't know but this is a technical forum....and a family website. All freaky off topic posts should be in "off topic."

                Hey who said you could post a pic of my Mother In Law
                1166cc 1/8 ET 6.09@111.88
                1166cc on NOS, 1/8 ET 5.70@122.85
                1395cc 1/8 ET 6.0051@114.39
                1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
                01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82

                Comment

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