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My 3D Printed HL-Hunley Build

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  • My 3D Printed HL-Hunley Build

    Another Build!!

    I have decided to go with the HL-Hunley build! I ordered the 3D print files form Bob (Nautilus Drydocks) today, and I already have my Dremel 3D40 at work!

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    I Already have my Dremel 3D40 hard at work on the files! Looking really good at this point. I am using Solutech Plus White PLA! I have printed out 4 submarines using this material and I have not had any issues with the PLA. All 4 subs have been in the water (15 min. at a time) But I make sure to keep them out of heat the after each run.

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    I am going to work on both my 1:77 scale Disney Nautilus and the HL-Hunley at the same time!

    Rob
    "Firemen can stand the heat"
    Attached Files
    Last edited by rwtdiver; 01-05-2021, 02:35 AM.

  • #2
    I am going to try and use the 2.5" SD that I received from David M. not to long ago! There really has to be a way to make it work in the Hunley! This SD is very special to me!!

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    I will be using the VEX transmitter with a 4 channel receiver. I also purchased this system from Nautilus Drydocks some time ago

    Rob
    "Firemen can stand the heat"
    Last edited by rwtdiver; 01-05-2021, 02:24 AM. Reason: Adding other information

    Comment


    • #3
      Originally posted by rwtdiver View Post
      I am going to try and use the 2.5" SD that I received from David M. not to long ago! There really has to be a way to make it work in the Hunley! This SD is very special to me!!

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      I will be using the VEX transmitter with a 4 channel receiver. I also purchased this system from Nautilus Drydocks some time ago

      Rob
      "Firemen can stand the heat"
      Other than that MSD having much more ballast tank than you need for the HUNLEY, I don't see any problem using it. As to the model itself, I recommend you gimbal the propeller in pitch as without a positive means of pitch control this submarine is a ***** to maneuver underwater. So, one channel for the bow planes, good for fine depth control; one channel for the ballast sub-system; one channel for the rudder; one channel for the ESC; and one channel for the gimbal.

      These clips from the SubRegatta 96 event shows the HUNLEY model I contributed some work to in and out of the water: https://youtu.be/_C1O9X6m3Ag 29:15, 50:50, and 32:15

      David
      Resident Luddite

      Comment


      • #4
        Originally posted by He Who Shall Not Be Named View Post

        Other than that MSD having much more ballast tank than you need for the HUNLEY, I don't see any problem using it. As to the model itself, I recommend you gimbal the propeller in pitch as without a positive means of pitch control this submarine is a ***** to maneuver underwater. So, one channel for the bow planes, good for fine depth control; one channel for the ballast sub-system; one channel for the rudder; one channel for the ESC; and one channel for the gimbal.

        These clips from the SubRegatta 96 event shows the HUNLEY model I contributed some work to in and out of the water: https://youtu.be/_C1O9X6m3Ag 29:15, 50:50, and 32:15

        David
        David,

        Thank you for your help on this boat! I am very happy that you feel the MSD that you gave me will work. I have been waiting for a special sub that I could use it in! I like the fact that the HL-Hunley has a very unique design and history to it. Very fitting to use a very special MSD! Thank you again David.

        David! The gimbal control for the propeller! Will that be a similar control system that I will be using on the Disney Nautilus? If I understand you correctly I need to be able to pitch the propeller up and down?

        Rob
        "Firemen can stand the heat"

        Comment


        • #5
          Originally posted by rwtdiver View Post

          David,

          Thank you for your help on this boat! I am very happy that you feel the MSD that you gave me will work. I have been waiting for a special sub that I could use it in! I like the fact that the HL-Hunley has a very unique design and history to it. Very fitting to use a very special MSD! Thank you again David.

          David! The gimbal control for the propeller! Will that be a similar control system that I will be using on the Disney Nautilus? If I understand you correctly I need to be able to pitch the propeller up and down?

          Rob
          "Firemen can stand the heat"
          Yes, but a much simpler mechanism -- you will only be pitching the shaft, the big rudder needs no help from yawing the shaft.

          David
          Resident Luddite

          Comment


          • #6
            Originally posted by He Who Shall Not Be Named View Post

            Yes, but a much simpler mechanism -- you will only be pitching the shaft, the big rudder needs no help from yawing the shaft.

            David
            OK! Thank you David! I am sure that I will summon for future help on this project! Thanks for being there for us!

            Rob
            "firemen can stand the heat"

            Comment


            • #7
              The printing work is moving along on the Hunley!

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              As you can see by the photo, the detail on this boat is exceptional! Looking forward to the print completion!

              Rob
              "Firemen can stand the heat"

              Comment


              • #8
                Great start! Delighted to see someone building this point especially from 3D files! Looking really good.

                Comment


                • #9
                  Thanks Bob! I am very pleased with how the Hunley files are printing out! I am having just a small issue with the height (149.81mm) with my DREMEL 3D40, so I sized the Z (height) down to 148.81mm and all is well!

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                  Rob
                  "Firemen can stand"

                  Comment


                  • #10
                    My own build and test actually proved that the pitch control was perfectly fine during submerged runs. I was really surprised.

                    Bob

                    Comment


                    • #11
                      Originally posted by SubHuman View Post
                      My own build and test actually proved that the pitch control was perfectly fine during submerged runs. I was really surprised.

                      Bob
                      Hi Bob!

                      I did see both videos you have out on the Hunley. And based on the one that you showed in your pool I would be very happy with those results you had. I just can't say enough about the files you put up on this boat! It will rank right up there with the Astute and the Redoutable files. Could not be more pleased!

                      I purchased a 512 page hard copy book by Brian Hicks called the "Sea of Darkness". It is a complete history on the HL-Hunley from design all the way through it's recovery!

                      I am looking forward to building this boat, and I will do my best to finish it out right!! Thanks for your input Bob!

                      Rob
                      "Firemen can stand the heat"

                      Comment


                      • #12
                        Still making head way on the Hunley! I have four complete sections of the hull completed.

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                        Just three more complete sections to go and the main hull structure will be complete! I have a total of 86 hours into the hull at this point. So far each section is looking great!

                        Rob
                        "Firemen can stand the heat"

                        Comment


                        • #13
                          Making more progress on the Hunley build! I have the main portion of the hull almost completed! The 2.5" MSD that I got from David M. was to long to fit into the hull as it is. David brought up the point that the ballast portion of the MSD was more capacity than the Hunley needed.

                          To help in making the MSD fit, I cut a full 2" off of the ballast portion of the cylinder.

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                          I do not have the stern section completed yet, so until I have I won't know if the 2" that I took out will be enough to allow the MSD to fit. If I need additional space I can fabricate a smaller section of the main hull to make the difference required. A 2" added hull section will not take away from the overall scale of the Hunley!

                          Rob
                          "Firemen can stand the heat"

                          Comment


                          • #14
                            The major hull components are all printed out. In order to use the MSD that I am using on the Hunley I had to cut 2" from the ballast portion of the cylinder. I also had to add an additional 2.5"section to the center of the hull.

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                            Next in the process will be to fabricate the top portion of the hull. I still have more small parts to print out.

                            Rob
                            "Firemen can stand the heat"

                            Comment


                            • #15
                              This will actually be the first (the 1:77 scale Nautilus will be the second) real ballast system subs I have built! The other five where basic surface runners and possible dynamic divers at best! With this information in mind and me being somewhat of a newbie, I will need some help with the plumbing on the Hunley!

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                              With the Hunley we really do not have a sail as per say. The picture showing the upper hull section with the square access hole for the snorkel box and the two snorkel tubes is the only access to the outside of the sub, except for the two hatches one forward and one aft. Looking at the plumbing that came with the MSD I am just not sure what I need to do!?

                              Any advice and help would be greatly appreciated!

                              Thanks,
                              Rob
                              "Firemen can stand the heat"

                              Comment

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