1936 to earley 37 EL U transmission

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  • JDoorn
    New Member
    • Oct 2018
    • 15

    #1

    1936 to earley 37 EL U transmission

    Hi, I'm building a 37 U flathead. Would anyone know the range or date when the 5th trans mount on the kick start side started?
  • Chris Haynes
    Curmudgeon
    • Jul 2002
    • 5939

    #2
    The 1938 or 1939 parts book may tell you.
    Be sure to visit;
    http://www.vintageamericanmotorcycles.com/main.php
    Be sure to register at the site so you can see large images.
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    Comment

    • RCamp
      Member
      • Jul 2012
      • 99

      #3
      Fifth mount was added mid year '37

      Comment

      • Jerry Wieland
        Senior Member
        • Jan 2006
        • 2007

        #4
        From my experience only the very early 1937's used the transmission without the fifth boss. I see Ralph says mid production and that may be true but in looking at a lot of OEM type 1937's I have only seen 2 that had the early transmission. I have never seen any literature such as Shop Dope that supports a time frame.

        Jerry


        Originally posted by JDoorn View Post
        Hi, I'm building a 37 U flathead. Would anyone know the range or date when the 5th trans mount on the kick start side started?

        Comment

        • JDoorn
          New Member
          • Oct 2018
          • 15

          #5
          Originally posted by Jerry Wieland View Post
          From my experience only the very early 1937's used the transmission without the fifth boss. I see Ralph says mid production and that may be true but in looking at a lot of OEM type 1937's I have only seen 2 that had the early transmission. I have never seen any literature such as Shop Dope that supports a time frame.

          Jerry
          That's what I read, (early 37) There probably wasn't any records. When they ran out they just started using the new ones. I thought about calling the HD museum to compare #s . mine is after 5000 but don't know what # they started with. Thanks!

          Comment

          • Jerry Wieland
            Senior Member
            • Jan 2006
            • 2007

            #6
            If your serial number is 5000 you most definitely need the case with the cast in 5th boss. Jerry

            Originally posted by JDoorn View Post
            That's what I read, (early 37) There probably wasn't any records. When they ran out they just started using the new ones. I thought about calling the HD museum to compare #s . mine is after 5000 but don't know what # they started with. Thanks!

            Comment

            • Robert Luland
              Senior Member
              • Sep 2007
              • 2075

              #7
              They were cheap! I can almost lay bet that the fifth bolt frame bracket was there on the frame right up until the first tranny with one got mounted. Bob L
              AMCA #3149
              http://www.thegoodoldmotorcyclepartscompany.com

              Comment

              • Chris Haynes
                Curmudgeon
                • Jul 2002
                • 5939

                #8
                Originally posted by Robert Luland View Post
                They were cheap! I can almost lay bet that the fifth bolt frame bracket was there on the frame right up until the first tranny with one got mounted. Bob L
                That was there with the very late 36's. The late 36 and early 37 had a bracket the bolted to the kicker cover studs then to the 5th mount on the frame. They are shown in the 37 and later parts book.
                Last edited by Chris Haynes; 03-31-2019, 12:28 PM.
                Be sure to visit;
                http://www.vintageamericanmotorcycles.com/main.php
                Be sure to register at the site so you can see large images.
                Also be sure to visit http://www.caimag.com/forum/

                Comment

                • 1950Panhead
                  Senior Member
                  • Jun 2010
                  • 343

                  #9
                  They were cheap! I can almost lay bet that the fifth bolt frame bracket was there on the frame right up until the first tranny with one got mounted. Bob L
                  No doubt.

                  That was there with the very late 36's. The late 36 and early 37 had a bracket the bolted to the kicker cover studs then to the 5th mount on the frame. They are shown in the 37 and later parts book.
                  Page 36 in Palmers book has a photo of a 37 frame with a brazed 5th mount on the frame. (I think)
                  So the current thinking is late 36 frames and all 37 frames have the 5th frame bracket and late 36 and early 37 use a bracket from the kicker cover to the frame bracket.
                  Last edited by 1950Panhead; 03-31-2019, 11:48 AM.

                  Comment

                  • Chris Haynes
                    Curmudgeon
                    • Jul 2002
                    • 5939

                    #10
                    Originally posted by 1950Panhead View Post
                    No doubt.



                    Page 36 in Palmers book has a photo of a 37 frame with a brazed 5th mount on the frame. (I think)
                    So the current thinking is late 36 frames and all 37 frames have the 5th frame bracket and late 36 and early 37 use a bracket from the kicker cover to the frame bracket.
                    It isn't thinking. It is fact found in the parts book.
                    Be sure to visit;
                    http://www.vintageamericanmotorcycles.com/main.php
                    Be sure to register at the site so you can see large images.
                    Also be sure to visit http://www.caimag.com/forum/

                    Comment

                    • JDoorn
                      New Member
                      • Oct 2018
                      • 15

                      #11
                      Originally posted by Jerry Wieland View Post
                      If your serial number is 5000 you most definitely need the case with the cast in 5th boss. Jerry
                      Thanks Jerry; I almost bought the early case at Davenporte last year. I had to get a 37. I hope I'm still alive to finish it. That does make the trans a little easier. I know they were still vented through the kick cover though and I think the top cover was good for 36-38

                      Comment

                      • 1950Panhead
                        Senior Member
                        • Jun 2010
                        • 343

                        #12
                        Chris,
                        There are photos of the brackets on page 61 of the 37 parts catalog.
                        2263-36 obviously bolts to the kicker cover.
                        2263-36a resembles the brazed frame bracket, however I have never seen one.

                        Comment

                        • Jerry Wieland
                          Senior Member
                          • Jan 2006
                          • 2007

                          #13
                          To be really technical later 1937 transmission case is a one-year only item. Jerry

                          Originally posted by JDoorn View Post
                          Thanks Jerry; I almost bought the early case at Davenporte last year. I had to get a 37. I hope I'm still alive to finish it. That does make the trans a little easier. I know they were still vented through the kick cover though and I think the top cover was good for 36-38

                          Comment

                          • JDoorn
                            New Member
                            • Oct 2018
                            • 15

                            #14
                            I’ll have to find that parts book. I have 36-48 and a lot of the illustrations are for later years, also my Palmer book shows Page 36 has 49-57 frames. It has 1994 copy right. There must be a later addition.

                            Comment

                            • Chris Haynes
                              Curmudgeon
                              • Jul 2002
                              • 5939

                              #15
                              Changes to '36 parts can be found in the 1937, 1938, 1939 and 1940 parts books. Later books aren't much help. They generally call out when the change took place. For example the ignition timer changed design at motor number 1222.
                              Be sure to visit;
                              http://www.vintageamericanmotorcycles.com/main.php
                              Be sure to register at the site so you can see large images.
                              Also be sure to visit http://www.caimag.com/forum/

                              Comment

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