1939 Delco horn for knucklehead

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  • Rod E
    Rod E
    • Jul 2009
    • 15

    #1

    1939 Delco horn for knucklehead

    I have a Delco horn I just bought and it is a 6 bolt pattern, I think I need a nine bolt. If I put this on and have it Judged someday will points be taken off? If I need a 9 bolt where do the missing 3 holes go? I have a shop and can drill them if I know where they should be placed. Also do the terminals go up or down when mounted. Thanks Rod
  • Chris Haynes
    Curmudgeon
    • Jul 2002
    • 5939

    #2
    Borrow a 9 screw horn and copy the pattern. Note that the holes in the outer face are square. Find a fabricating shop that can punch the square holes for you. There is no other differences between the 6 and 9 screw horns.
    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

    • Perry Ruiter
      Henderson KJ wanted!
      • Jun 2001
      • 621

      #3
      Pick up the phone and call Harbour Vintage. Ask for a 9 bolt upper ring for a Delco horn. $25 and you've got your template for the other three holes ... Perry

      Comment

      • jorrow
        Senior Member
        • Feb 2008
        • 347

        #4
        Hope this helps..
        Attached Files

        Comment

        • jorrow
          Senior Member
          • Feb 2008
          • 347

          #5
          Ninth hole...
          Attached Files

          Comment

          • 46EL
            Senior Member
            • Apr 2009
            • 728

            #6
            chief348@juno.comSend me an email to the attached link in this message. I can send you photos of a Horn I just converted. I can also send a photo of a Horn with all the brackets and hardware attached that I was just ready to mount on a bike. The harbor Vintage idea is a great one and that will give you the bolt pattern you need.

            Comment

            • Rod E
              Rod E
              • Jul 2009
              • 15

              #7
              Thank you for the 2 pictures that really helps.

              Comment

              • Rod E
                Rod E
                • Jul 2009
                • 15

                #8
                Originally posted by Chris Haynes View Post
                Borrow a 9 screw horn and copy the pattern. Note that the holes in the outer face are square. Find a fabricating shop that can punch the square holes for you. There is no other differences between the 6 and 9 screw horns.
                Thanks Chris, do you know if the 2 electrical terminals will be located on the left side as you look at the bike from the front?

                Comment

                • Chris Haynes
                  Curmudgeon
                  • Jul 2002
                  • 5939

                  #9
                  When looking at the rear of the horn the terminals will be in the 3 o'clock position.
                  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

                  • Barry
                    New Member
                    • Jun 2005
                    • 21

                    #10
                    Besides adding the extra holes how do you get the mounting bracket off without any damage? Barry
                    Barry E Porter

                    Comment

                    • jwl
                      Senior Member
                      • Dec 2001
                      • 338

                      #11
                      You didn't say you had a 6 bolt with a mounting bracket. That gets a little tougher. You are probably better off finding a 6 bolt horn without a bracket attached. The brackets can be removed by unriviting it but it is a real chore to rerivit the back on once the bracket is removed.

                      Comment

                      • Rod E
                        Rod E
                        • Jul 2009
                        • 15

                        #12
                        Thanks

                        Hi, mine had no bracket, worked on it all yesterday and got it on the bike thanks to all that helped.

                        Comment

                        • Rod E
                          Rod E
                          • Jul 2009
                          • 15

                          #13
                          1939 EL with horn mounted

                          Horn on bike horn .jpg

                          Comment

                          • Chris Haynes
                            Curmudgeon
                            • Jul 2002
                            • 5939

                            #14
                            If you horn had a good bracket on it trade it to someone who has a broken bracket. I have several.
                            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

                            • Perry Ruiter
                              Henderson KJ wanted!
                              • Jun 2001
                              • 621

                              #15
                              Originally posted by Chris Haynes View Post
                              When looking at the rear of the horn the terminals will be in the 3 o'clock position.
                              So are we to take from this picture that the only perimeter nuts that are cad plated are the three for the face with the remainder parkerized (or painted?)? ... Perry

                              Comment

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