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Russian Alfa Class

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  • Great job Rob! I enjoyed watching your build and the questions you asked were very helpful for those of us still learning.

    As for those who comments about accuracy or realism or those with the I can do it better attitude, let them. It’s a hobby, it’s for enjoyment, it’s for learning, it’s for community and I think most of the people on this forum support that and that’s why we come back to see the work of people like you and not just the elite or self appointed elite.

    Randy

    Comment


    • Originally posted by RanSan View Post
      Great job Rob! I enjoyed watching your build and the questions you asked were very helpful for those of us still learning.

      As for those who comments about accuracy or realism or those with the I can do it better attitude, let them. It’s a hobby, it’s for enjoyment, it’s for learning, it’s for community and I think most of the people on this forum support that and that’s why we come back to see the work of people like you and not just the elite or self appointed elite.

      Randy
      Randy,

      Just seen your post! Sorry, I am so late in responding! Your words are so kind and FAR to generous. I have so much more to learn about this hobby and the ins and outs about the finishing techniques that are involved. My joy in the building and the mechanics of sub building. A lot of people enjoy making there boats look like they have been at sea for years, and I truly respect those that can achieve this look and with such realistic results. I like the look of before the effect of the elements.

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      I have made attempts to do a more realistic look on several of my boats. It is certainly a learning process of which I need to spend a GREAT deal more time to achieve. For now I just enjoy the hobby for what it is!

      Thanks again Randy,

      Rob
      "Firemen can stand the heat"

      Comment


      • Just when I thought I was done with the ALFA builds, well I am back onto the 1;72 scale that was also part of this blog!

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        Well, this is going to be a big leap! As I stated on this blog about the 1:72 Alfa, I was going to scratch build a WTC (SD) for this boat. I have what might be another one of my big under thought goofy idea!

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        I have stripped out my original 80mm WTC that was supposed to be for the Arkmodel Type VII boat. I am going to take it from a dual shaft system and convert it into a single shaft WTC. If I can make the conversion from dual to a single, I think the ballast system and the overall WTC will be a good fit for the 1:72 scale Alfa! "Another Experiment"

        Rob
        "Firemen can stand the heat"

        Comment


        • I have a question about the possible use of a brushless motor for my 1:72 scale Alfa and installing it on the stern end cap (on the outside) of the 80mm WTC? would a 750KW brushless motor be adequate for this boat? It would certainly save a lot of problems not having to go through all the shaft design and installing shaft bushing and seals!

          Rob
          "Firemen can stand the heat"

          Comment


          • It would work, Bob is using them on his new line of WTCs. Just make sure to use a bidirectional brushless ESC to get forward and reverse.

            Nate

            Comment


            • Originally posted by neitosub View Post
              It would work, Bob is using them on his new line of WTCs. Just make sure to use a bidirectional brushless ESC to get forward and reverse.

              Nate
              Thanks Nate, I do appreciate the input!

              I have never used brushless motors on any of my subs before, but I thought this might be a good way to go with this particular build.

              Comment


              • If I go with the brushless motor on my 80mm WTC these where going to be the motor and the ESC!

                https://www.amazon.com/RC-Brushless-...6NZ9Q3JV4& pd_rd

                https://www.amazon.com/FlashHobby-Br...jaz10cnVl&th=1

                Any input would be appreciated! Thank you!

                Rob
                "Firemen can stand the heat"

                Comment


                • Hi Rob,

                  The brushless motor choice looks good but the ESC you’ve listed is not bidirectional, it’s most likely used for RC airplanes and drones where you only need it to run in the forward direction. I would go with something like this:

                  https://www.amazon.com/Readytosky-Bi...s%2C125&sr=8-3

                  Nate

                  Comment


                  • Originally posted by neitosub View Post
                    Hi Rob,

                    The brushless motor choice looks good but the ESC you’ve listed is not bidirectional, it’s most likely used for RC airplanes and drones where you only need it to run in the forward direction. I would go with something like this:

                    https://www.amazon.com/Readytosky-Bi...s%2C125&sr=8-3

                    Nate
                    Nate,

                    Thank you again for all your help and suggestions. The brushless motor type systems for submarines is still really new to me!

                    I appreciate you taking the time to look up the web site and sharing it!

                    Rob
                    "Firemen can stand the heat"

                    Comment


                    • No problem Rob! I've also been building a brushless WTC over the winter so we're in the same boat, I bought a brushless ESC that was meant for RC drones and had to manually program the reverse functionality into the circuit board. If I were to start over again, I would simply go with the bidrectional ESC I linked to save the time and effort. But it's all part of the learning process!

                      Regards,
                      Nate

                      Comment


                      • My plan is to turn my dual shafted 80mm WTC into a single shafted 80mm WTC!

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                        I really have two ways to go. I can use the remaining brushed motor and ESC from the original 80mm WTC (I burned up the other motor and ESC) or I can go with a 750kw brushless motor with a bidirectional ESC for the drive system, both ideas are very possible. I will use the same design linkage set up for the rudders and dive planes that I used on my1:96 scale Alfa. I think this change over on the 80mm WTC will be a great fit for the 1:72 Alfa. And it will make good use of the existing 80mm WTC that I SREWED UP!

                        Final note about Nautilus Drydocks 80mm WTC: It came to me in GREAT working condition and with NO PROBLEMS at all until I got my grubby little mits on it, and then it was SOP as far as my work goes. If it can be screwed up, I am your man! In the right hands Bob Martin has a winner with the 80mm WTC.

                        Rob
                        "Firemen can stand the heat"

                        Comment


                        • Today I removed the existing dual drive shaft bushings and seals from the stern WTC end cap.

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                          I then sealed the holes in the end cap using a tip that I got from David Merriman. Thin CA and layers of baking soda. After it all cured, I sanded the excess flush to the end cap. The end cap is now ready for the installation of a single 750kw brushless motor to the wet side of the cap for the motor drive system on the Alfa!

                          Rob
                          "Firemen can stand the heat"
                          Last edited by rwtdiver; 05-05-2022, 05:25 PM.

                          Comment


                          • Rob, what are your plans for the Type VII?
                            Of the 40,000 men who served on German submarines, 30,000 never returned.”

                            Comment


                            • Originally posted by Das Boot View Post
                              Rob, what are your plans for the Type VII?
                              Hi Casey,

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                              I set the Type VII as a static model only! It was a good build for me, but I made some mistakes on the 80mm WTC, and please understand, these mistakes where my fault NOT the product! The boat turned out to be a great build so I gave it a paint scheme of the early U-552 and added it to my static model collection.

                              Rob
                              "Firemen can stand the heat"

                              Comment


                              • Making a little more progress on the Alfa!

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                                I have started to install the brass bushing for the rudders and the dive planes in the stern section.

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                                I received the brushless motor and bi-directional ESC for the main drive shaft today, and it is ready for installation.

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                                We are making some headway on the Alfa project! I really hope going to the wet with the brushless motor is going to work out!? Based on everything I have read on this forum, brushless motors could be the new wave of the future for the drive systems on our subs!

                                Rob
                                "Firemen can stand the heat"

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