trans. case question

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  • ldfly112
    Senior Member
    • Sep 2017
    • 143

    #1

    trans. case question

    Is the transmission case the same for a 4 speed or a 3 speed reverse
  • Rubone
    Senior Member
    • Aug 2004
    • 4764

    #2
    What make, what model?
    Robbie Knight Amca #2736

    Comment

    • ldfly112
      Senior Member
      • Sep 2017
      • 143

      #3
      my trans. case is a harley and has a date code 1945 it is a 4 speed

      Comment

      • MMasa
        Senior Member
        • Jun 2001
        • 1192

        #4
        Yes. The case is the same. Is there a small idler gear installed in the bottom of the case?
        Mark
        Mark Masa
        www.linkcycles.com

        Comment

        • ldfly112
          Senior Member
          • Sep 2017
          • 143

          #5
          no gears yet I have a good case . Im considering a 3 speed with reverse for my 1937 UL. what are your thoughts

          Comment

          • MMasa
            Senior Member
            • Jun 2001
            • 1192

            #6
            Is it a sidecar rig?
            Mark Masa
            www.linkcycles.com

            Comment

            • Rubone
              Senior Member
              • Aug 2004
              • 4764

              #7
              Are you trying to be correct for '37? The internal parts are different than later types.
              Robbie Knight Amca #2736

              Comment

              • Jerry Wieland
                Senior Member
                • Jan 2006
                • 2007

                #8
                Originally posted by ldfly112 View Post
                no gears yet I have a good case . Im considering a 3 speed with reverse for my 1937 UL. what are your thoughts
                1937 had a RN123 shift pattern and 1939 and newer has R1N23, Mostly different gearset. Jerry

                Comment

                • ldfly112
                  Senior Member
                  • Sep 2017
                  • 143

                  #9
                  Yes im considering a sidecar. Where is a good source for finding the gearset and would I be better off with the 37 gearset or the 39 and newer

                  Comment

                  • Jerry Wieland
                    Senior Member
                    • Jan 2006
                    • 2007

                    #10
                    Originally posted by ldfly112 View Post
                    Yes im considering a sidecar. Where is a good source for finding the gearset and would I be better off with the 37 gearset or the 39 and newer
                    I personally much prefer 4 speeds forward than 3 speeds forward with a reverse. The first year I ran a sidecar I had a reverse transmission in the bike and ditched it the 2nd year - I never had a problem finding a parking spot that I could drive out of. I have no experience riding a bike with an early reverser although I have rebuilt a few of them. I find the late reverser 'cantankerous'.

                    Jerry

                    Comment

                    • duffeycycles
                      Senior Member
                      • Apr 2010
                      • 2011

                      #11
                      3 spd gearsets are not easy to get,early or late style.I have an extra reverse shift fork for the later style.

                      Comment

                      • ldfly112
                        Senior Member
                        • Sep 2017
                        • 143

                        #12
                        Thanks for the advise I will be going to Wausen next month to see if i can find anything

                        Comment

                        • Rubone
                          Senior Member
                          • Aug 2004
                          • 4764

                          #13
                          I have a reverse gear for the countershaft for a 36-38 box available.
                          Robbie Knight Amca #2736

                          Comment

                          • duffeycycles
                            Senior Member
                            • Apr 2010
                            • 2011

                            #14
                            Here is a pic of the later 3spd reverse gearset
                            & my extra parts

                            IMG_0872.JPGIMG_0871.JPG

                            Comment

                            • duffeycycles
                              Senior Member
                              • Apr 2010
                              • 2011

                              #15
                              V Twin sells the reverse idler gear & shaft
                              The countershaft cluster gear has an R stamped on the end of high gear

                              IMG_0879.JPG

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