New Trumpeter Kilo 1:144 Build

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  • biggsgolf
    Captain
    • Jan 2020
    • 720

    David, any of those 1.25” SD’s from about six years ago available anywhere? Click image for larger version

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    • He Who Shall Not Be Named
      Moderator
      • Aug 2008
      • 12255

      Originally posted by biggsgolf
      David, any of those 1.25” SD’s from about six years ago available anywhere? Click image for larger version

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      I don't sell stuff anymore.

      However, if you're talking about a SD for the 1/144 Trumpeter KILO, then you're talking a 2" diameter SD. Such:

      Click image for larger version

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      Who is John Galt?

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      • biggsgolf
        Captain
        • Jan 2020
        • 720

        Yeah David I have a couple of 2” SD’s, want to convert a 1:144 Type Vll, so need a smaller one, lol

        Comment

        • He Who Shall Not Be Named
          Moderator
          • Aug 2008
          • 12255

          Originally posted by biggsgolf
          Yeah David I have a couple of 2” SD’s, want to convert a 1:144 Type Vll, so need a smaller one, lol
          Oohh! I see. That's supper small! Agreed, maybe you can get a 1.25" SD into that Type-7. Tight fit for the 1/144 GATO. I'll help if I can.


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          Who is John Galt?

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          • biggsgolf
            Captain
            • Jan 2020
            • 720

            Thanks David for the eye candy! Is that a single drive shaft converted to dual with the gears? How do they attach to the prop shafts, I see what looks like tubing, I assume for illustration? Any thoughts on a submarine that would accomodate a 2” that turns sharply? Maybe a boat with the props forward of the planes & Rubber(s). Most seem to be dual props so would need to convert single shaft to dual ising gears.

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            • Das Boot
              Rear Admiral
              • Dec 2019
              • 1149

              Great job.
              Last edited by Das Boot; 05-01-2021, 05:23 PM.
              Of the 40,000 men who served on German submarines, 30,000 never returned.”

              Comment

              • Das Boot
                Rear Admiral
                • Dec 2019
                • 1149

                [QUOTE=He Who Shall Not Be Named;n149489]

                Oohh! I see. That's supper small! Agreed, maybe you can get a 1.25" SD into that Type-7. Tight fit for the 1/144 GATO. I'll help if I can.



                How do you get your fat fingers in that little cylinder?
                Of the 40,000 men who served on German submarines, 30,000 never returned.”

                Comment

                • He Who Shall Not Be Named
                  Moderator
                  • Aug 2008
                  • 12255

                  Originally posted by biggsgolf
                  Thanks David for the eye candy! Is that a single drive shaft converted to dual with the gears? How do they attach to the prop shafts, I see what looks like tubing, I assume for illustration? Any thoughts on a submarine that would accomodate a 2” that turns sharply? Maybe a boat with the props forward of the planes & Rubber(s). Most seem to be dual props so would need to convert single shaft to dual ising gears.
                  Conversion from a single output to two counter-rotating outputs is done with the simple addition of an opposing gear that meshes with the single output shaft gear. Like so:

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                  Here you see the only difference with the 1.25" SD motor-bulkhead is the inclusion of the opposing gear to drive the second propeller shaft.

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                  The soft rubber tubing (silicon or latex) forms a poor-mans universal joint between drive chain elements. However, using this means of correcting for running gear off-set mandates that the thrust loads be absorbed at the after-most bearing points: The shaft strut bearings on the GATO; and the ball type gimbal on the Disney NAUTILUS.

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                  That little KILO turns just fine! https://youtu.be/oc4XLg79QDI

                  Don't over-think this project!

                  David
                  Last edited by He Who Shall Not Be Named; 05-01-2021, 05:41 PM.
                  Who is John Galt?

                  Comment

                  • biggsgolf
                    Captain
                    • Jan 2020
                    • 720

                    Thankyou “my lord”, invaluable information! The photos with your descriptions always tell the story, even for numb nuts like me!

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                    • biggsgolf
                      Captain
                      • Jan 2020
                      • 720

                      So my 1:144 Kilo Pool Trials went well on surface maneuvers, however, ballast pump was inoperable. Upon my return to my shop I found that my Tx settings had been changed. I mapped my ballast channel five to switch C. Somehow that got changed…..grrrrrrr. Will return for pool runs in 10 days.

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                      • biggsgolf
                        Captain
                        • Jan 2020
                        • 720

                        David, silly but I cannot figure how the second driveshaft with the opposing gear is anchored to the endcap? Hooe this makes sense.

                        Comment

                        • redboat219
                          Admiral
                          • Dec 2008
                          • 2735

                          Hi Biggsgolf.

                          Just want to ask your about your KILO WTC. AFAIK, you're the only one who has used the RCshipyard WTC. How is the motor output shaft sealed?
                          Make it simple, make strong, make it work!

                          Comment

                          • biggsgolf
                            Captain
                            • Jan 2020
                            • 720

                            Hi, its a shaft seal installed from inside of endcap.

                            Comment

                            • redboat219
                              Admiral
                              • Dec 2008
                              • 2735

                              Originally posted by biggsgolf
                              Hi, its a shaft seal installed from inside of endcap.
                              Shouldn't it be on the outside of the endcap with the open face of the seal to the water so that as the sub goes deeper increasing water pressure presses down on the seal causing to seal better ?


                              Make it simple, make strong, make it work!

                              Comment

                              • biggsgolf
                                Captain
                                • Jan 2020
                                • 720

                                I hear you on that, I believe the motor face creates a union with it where it will not lose the pressure seal.

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