USS Tucson

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  • SSBN659
    Commander
    • Feb 2009
    • 403

    Started work on a prop for Tucson. Looked closely at what David posted, the Prop Shop UK prop I bought from them years ago for my Will Rogers model, and various other drawings.
    The pictures tel the story.

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    The final shows that I came close, but not close enough, so back to the shop for a second try using what I learned making this prop.

    Will Rogers
    SSBN659
    Attached Files

    Comment

    • SSBN659
      Commander
      • Feb 2009
      • 403

      Still working on the prop. Getting closer but not quite there yet. These shots are try #3. Hopefully try #4 will be satisfactory. Photos 3 & 4 are a dry fit showing where more work is needed. I will eventually get it right.

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      Will Rogers
      SSBN659

      Comment

      • bwi 971
        Captain
        • Jan 2015
        • 896

        Just sharing.....

        Jig for holding the blades in place when soldering

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        Using sand to adjust the propeller allows for fine-tuning: it both secures the blade during heating and facilitates minor adjustments.

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        Practical wisdom is only to be learned in the school of experience.
        "Samuel Smiles"

        Comment

        • SSBN659
          Commander
          • Feb 2009
          • 403

          Wow, you just gave me a blinding flash of inspiration!

          Many thanks for sharing this Bart,

          Will Rogers
          SSBN659

          Comment

          • Ken_NJ
            Captain
            • Sep 2014
            • 735

            Really nice job! Prop is looking great!

            Comment

            • Davjacva
              Lieutenant Commander
              • Nov 2022
              • 229

              The prop was great, but to me, the star of the show was that jig. What a piece of art.

              Comment

              • He Who Shall Not Be Named
                Moderator
                • Aug 2008
                • 12200

                Originally posted by Davjacva
                The prop was great, but to me, the star of the show was that jig. What a piece of art.
                Bart's gizmo? If so, I could not agree more. That was Loren Perry quality engineering there.

                David
                Who is John Galt?

                Comment

                • SSBN659
                  Commander
                  • Feb 2009
                  • 403

                  After several attempts at making the prop I still haven't been satisfied with my results. I'll keep trying but as a backup I wonder if anyone out there is able to make a 2" diameter seven blade ringed prop using this new fangled 3D printer technique?

                  Will Rogers
                  SSBN659

                  Comment

                  • trout
                    Admiral
                    • Jul 2011
                    • 3539

                    Keith Bender - propmeup1@verizon.net
                    He does a fine job on creating props. Very nice to work with!
                    If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.

                    Comment

                    • SSBN659
                      Commander
                      • Feb 2009
                      • 403

                      Thanks Tom, Keith no longer making ringed props. I sent notes to Prop Shop UK and to Loyal Hanna Dockyard but haven't heard back. Back to the workbench.

                      Will Rogers
                      SSBN659

                      Comment

                      • bwi 971
                        Captain
                        • Jan 2015
                        • 896

                        Originally posted by SSBN659
                        After several attempts at making the prop I still haven't been satisfied with my results. I'll keep trying but as a backup I wonder if anyone out there is able to make a 2" diameter seven blade ringed prop using this new fangled 3D printer technique?

                        Will Rogers
                        SSBN659
                        Hi Will,

                        I took a look online and found something that might be useful. The person will be capable of scaling the props to your desired dimensions. It's important to discuss with them which resin they'll use, as some resins can be brittle."


                        2 x 7-blade 688-I screw with annular ring. Patience and care needs to be taken. But it isn't necessarily about the material as many are familiar with resin kits and this is little different. It's more about how thin these sections have been printed.



                        Grtz,
                        bart
                        Practical wisdom is only to be learned in the school of experience.
                        "Samuel Smiles"

                        Comment

                        • SSBN659
                          Commander
                          • Feb 2009
                          • 403

                          Thanks again Bart. I sent a request to the fellow to see what he might be able to do for me. Haven't heard back yet.

                          Will Rogers
                          SSBN659

                          Comment

                          • SSBN659
                            Commander
                            • Feb 2009
                            • 403

                            It's not easy trying to make it look like you know what you are doing. I gave up on brass for my ringed prop and switched to polystyrene. Also found a more accurate method of making a target for a seven blade prop because 360 can be evenly divided by all numbers 1 thru 10 except for 7.
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                            This is the jig I made for cutting slots in the hub for the blades.

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                            Getting the ring and blades attached was a challenge but I think it came pretty close.

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                            I never heard back from my queries to third party about purchasing a prop so I'll stick with this one for now.

                            Will Rogers
                            SSBN659



                            Comment

                            • SSBN659
                              Commander
                              • Feb 2009
                              • 403

                              Could have saved a lot of time if I had seen this earlier.

                              Simple math and the correct multiplier number (provided in this video) are what you need to easily divide a circle into equal sections. Here's the link to a ...


                              Oh well, lesson learned the hard way, now back to work.

                              Will Rogers
                              SSBN659

                              Comment

                              • SSBN659
                                Commander
                                • Feb 2009
                                • 403

                                Not much work going on due holiday and travel but this prop is finished.

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                                Happy holidays!

                                Will Rogers
                                SSBN659

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