Another ARKMODEL VII Build Blog

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • rwtdiver
    Vice Admiral
    • Feb 2019
    • 1768

    #16
    Today I finished up the rudder parts installation using LEGOS gears and brass tubing, brass rod, and brass sheet metal. I realize some will say the plastic gears will not last! Having build MANY LEGO motorized kits, I can tell you from experience they will last!

    Click image for larger version

Name:	ARKMODEL RD 1.jpg
Views:	345
Size:	58.1 KB
ID:	160136Click image for larger version

Name:	ARKMODEL RD 2.jpg
Views:	308
Size:	65.6 KB
ID:	160137

    I designed this entire rudder assembly so that it could be completely taken out of the sub if I ever had to replace any of the gears! The brass plate at the top of the mechanism on the first photo is the adjustment nut that will allow me to adjust the tension on the gear drive system. I am going to take the assembly out of the sub tomorrow to do some final finish and clean up work.

    Rob
    "Firemen can stand the heat"

    Comment

    • Das Boot
      Rear Admiral
      • Dec 2019
      • 1149

      #17
      Very ingenious.
      Of the 40,000 men who served on German submarines, 30,000 never returned.”

      Comment

      • rwtdiver
        Vice Admiral
        • Feb 2019
        • 1768

        #18
        Originally posted by Das Boot
        Very ingenious.
        Thanks Casey,

        I love our LEGOS! :-))

        Rob
        "Firemen can stand the heat"

        Comment

        • rwtdiver
          Vice Admiral
          • Feb 2019
          • 1768

          #19
          Today I finished up the stern section rudder and dive planes controls. I did not use the control linkages that came with the kit. I used gears for the rudder system and replaced the plastic horn for the dive planes
          with solid brass!


          Click image for larger version

Name:	ARKMODEL STERN 1.jpg
Views:	283
Size:	71.4 KB
ID:	160149Click image for larger version

Name:	ARKMODEL STERN 2.jpg
Views:	259
Size:	80.9 KB
ID:	160150

          Everything operates very smooth and will line up perfectly with the 80 mm WTC almost a straight shot from the control horns to the linkage from the WTC...

          Rob
          "Firemen can stand the heat"




          Comment

          • rwtdiver
            Vice Admiral
            • Feb 2019
            • 1768

            #20
            I found I needed to go back into the rudder assembly and make a change in the center support plate.

            Click image for larger version

Name:	ARKMODEL RC.jpg
Views:	316
Size:	62.5 KB
ID:	160215

            In order to take the deck on and off the stern screw was attached to the rudder assembly and it made it a real hassle. I cut the support plate back and fabricated a different support plate holder and now it is separate from the deck support screw!

            Rob
            "Firemen can stand the heat"

            Comment

            • rwtdiver
              Vice Admiral
              • Feb 2019
              • 1768

              #21
              So now I am moving onto the drive shafts for this sub, and again the supplied kit parts are somewhat crap in my opinion. They are using a piece of plastic tubing for the shaft bushing, not up to par!

              Click image for larger version

Name:	ARKMODEL SHAFT.jpg
Views:	304
Size:	59.3 KB
ID:	160219

              I will be using a series of brass tubing to fabricate a more suitable drive shaft assembly!

              Rob
              "Firemen can stand the heat"

              Comment

              • rwtdiver
                Vice Admiral
                • Feb 2019
                • 1768

                #22
                I spent the day finishing up the stern section of my Arkmodel! I do have two brass props for this boat, but the ones that came with the kit are not to bad. They have threaded brass inserts and good heavy solid blades!

                Click image for larger version  Name:	ARKMODER STERN C 1.jpg Views:	0 Size:	66.9 KB ID:	160238Click image for larger version  Name:	ARKMODEL STERN C 2.jpg Views:	0 Size:	83.9 KB ID:	160239

                Next I will start work on the bow section! The bow planes and the torpedo doors. I will do the bow planes just like the stern planes, using brass rod and control rod. I will make the torpedo doors open and close, but I will not do any servo operation at this point, but maybe sometime in the future.

                Rob
                "Firemen can stand the heat"
                Last edited by rwtdiver; 03-22-2022, 09:21 PM.

                Comment

                • rwtdiver
                  Vice Admiral
                  • Feb 2019
                  • 1768

                  #23
                  I made some progress on the bow of the Type V!! today!

                  Click image for larger version

Name:	ARKMODEL TORPEDO 1.jpg
Views:	301
Size:	72.7 KB
ID:	160275Click image for larger version

Name:	ARKMODEL TORPEDO 2.jpg
Views:	272
Size:	73.2 KB
ID:	160276

                  I 3D printed a set of torpedo tubes for the bow section. I have the doors hinged so that will open and close. I may set them up to function in the future. I am also going to 3D print some simulated torpedo's to insert just inside the front of the tubes for effect.

                  Rob
                  "Firemen can stand the heat"

                  Comment

                  • RCSubGuy
                    Welcome to my underwater realm!
                    • Aug 2009
                    • 1768

                    #24
                    This is how I have done torpedo shutters in the past. They work very well.

                    Bob
                    Attached Files

                    Comment

                    • rwtdiver
                      Vice Admiral
                      • Feb 2019
                      • 1768

                      #25
                      Originally posted by SubHuman
                      This is how I have done torpedo shutters in the past. They work very well.

                      Bob
                      Thanks Bob,

                      The photos are a great help! I was not sure what I was going to do, but that looks like a great set up for one of the switches on my VEX radio! :-))

                      Thank again for the help!

                      Rob
                      "Firemen can stand the heat"

                      Comment

                      • rwtdiver
                        Vice Admiral
                        • Feb 2019
                        • 1768

                        #26
                        I finished up the simulated torpedo system in the bow!

                        Click image for larger version

Name:	ARKMODEL TH 1.jpg
Views:	256
Size:	75.1 KB
ID:	160348Click image for larger version

Name:	ARKMODEL TH 2.jpg
Views:	246
Size:	77.9 KB
ID:	160349

                        Click image for larger version

Name:	ARKMODEL TH 3.jpg
Views:	246
Size:	82.4 KB
ID:	160350Click image for larger version

Name:	ARKMODEL TH 5.jpg
Views:	243
Size:	63.6 KB
ID:	160351
                        Click image for larger version

Name:	ARKMODEL TH 4.jpg
Views:	234
Size:	76.9 KB
ID:	160353

                        I 3D printed the simulated torpedo's, and then slapped on a little red acrylic paint on the heads and the CA'd to the tubes. Touched it all up with grey acrylic paint At this point I am going to fabricate system to open and close the outer doors. Bob Martin submitted some drawings as to how he fabricated the linkages to achieve this function. Not sure yet! I may just add an additional servo to operate the outer doors!!!

                        Rob
                        "Firemen can stand the heat"
                        Attached Files

                        Comment

                        • rwtdiver
                          Vice Admiral
                          • Feb 2019
                          • 1768

                          #27
                          Today I fabricate the control linkages for the stern dive planes, rudders, and the bow dive planes!

                          Click image for larger version

Name:	ARKMODEL BP 1.jpg
Views:	249
Size:	75.5 KB
ID:	160393Click image for larger version

Name:	ARKMODEL BL 3.jpg
Views:	228
Size:	76.7 KB
ID:	160394

                          Click image for larger version

Name:	ARKMODEL BL 2.jpg
Views:	231
Size:	73.8 KB
ID:	160395

                          Rob
                          "Firemen can stand the heat"



                          Comment

                          • rwtdiver
                            Vice Admiral
                            • Feb 2019
                            • 1768

                            #28
                            Now that I have the hull and the deck sections complete, and all the control linkages complete and operational, it's time to move on to the WTC!

                            Click image for larger version

Name:	ARKMODEL WTC W 1.jpg
Views:	253
Size:	75.0 KB
ID:	160514Click image for larger version

Name:	ARKMODEL WTC W 2.jpg
Views:	237
Size:	80.5 KB
ID:	160515

                            I did have a problem with one of the servos that came with the WTC! After running a full check on the servos (which I always do) before installation and hooking up the arms to the control linkages. After running both servos with my servo tester, one of them stopped working completely. These little 9g servos are a dime a dozen and I have a good inventory on hand just for this type of situation. I replaced the servo, and everything is working great!

                            My next project will be to install a servo in the battery compartment end cap for the forward bow dive planes. Bob Martin had a YouTube out that shows how he did this very installation.

                            Rob
                            "Firemen can stand the heat"

                            Comment

                            • rwtdiver
                              Vice Admiral
                              • Feb 2019
                              • 1768

                              #29
                              Getting ready to start the wiring process and I have a question about the two motor system on the 80mm WTC!

                              Click image for larger version

Name:	ARKMODEL MTR W 1.jpg
Views:	217
Size:	70.5 KB
ID:	160552

                              Click image for larger version

Name:	ARKMODEL MTR W 2.jpg
Views:	151
Size:	58.6 KB
ID:	160553

                              I believe my wiring diagram is correct for counter rotating motors?! Not sure totally so would someone correct me if I am wrong!

                              Thank you,

                              Rob
                              "Firemen can stand the heat"

                              Comment

                              • He Who Shall Not Be Named
                                Moderator
                                • Aug 2008
                                • 12253

                                #30
                                I would go with a higher capacity ESC, Viper Marine strikes my fancy.

                                David
                                Who is John Galt?

                                Comment

                                Working...