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Joe's Kromrey Converter Adventures

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  • Joe's Kromrey Converter Adventures

    Hi All,

    Starting a thread to document this build!

    https://youtu.be/p9W1Mru2L_Q

    Cheers,

    Joe

  • #2
    https://bittubers.com/post/0bdcc2df-...c-653298df5c3a

    Comment


    • #3
      version 1...long way to go
      Attached Files

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      • #4
        update:

        https://youtu.be/cAmCrH4kAVg

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        • #5
          Looks great!

          How did you wind the coils? Like the patent or like how John made his?
          Aaron Murakami





          You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete. ― Richard Buckminster Fuller

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          • #6
            like you outlined in the 2016 ESTC Beyond the SG presentation download. Thank so much for that I'd be up the creek without it! Just has some pole pieces CNC'd yesterday. So cool!!! stay tuned!!!

            Comment


            • #7
              to confirm.....only if the coil is wound right will you get NS/SN fields produced when injecting 12V DC into AC output. I do get this when testing.

              Dude, wait till I make one using expoxy/#6 shell shot cores!!!!!

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              • #8
                https://bittube.tv/post/1d41bec6-cc5...1-e5290e2f20a1

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                • #9
                  Hi All,

                  Here is the STL file for the 0.5 shaft, slip ring isolator. remeber to print with supports.

                  https://drive.google.com/drive/folde...a8?usp=sharing

                  Take care,

                  Joe

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                  • #10
                    http://mojoemachines.com/

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                    • #11
                      Joe,

                      Good to see that you are sticking with the program. The 3D print parts look very good!
                      Keep on truckin'.
                      Yaro
                      Yaro

                      "The Universe is under no obligation to make sense to you." -Neil Degrasse Tyson

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                      • #12
                        YARO!!! been awhile...where is everyone on here these days lol....

                        update vid shows I have attained the rpm increase under shorted output with a plastic and wood housing!!!

                        https://youtu.be/rinVzUvE6rY



                        Comment


                        • #13
                          Originally posted by Joster View Post
                          YARO!!! been awhile...where is everyone on here these days lol....

                          update vid shows I have attained the rpm increase under shorted output with a plastic and wood housing!!!

                          https://youtu.be/rinVzUvE6rY


                          Yo Joe,

                          Great Demo! Love the use of low tech for the gen body - simple, yet effective, for experimental purposes. So you did accomplish your goal of speedup under load - excellent progress! What's next?

                          Agree that the level of interest on ESF is at a low ebb, at least on the techie side, perhaps all the experimenters have gone to the dark side. But then with the COV19 lockdown and the advent of summer people's interests turn to other pleasures.

                          Happy Fathers Day

                          Yaro
                          Yaro

                          "The Universe is under no obligation to make sense to you." -Neil Degrasse Tyson

                          Comment


                          • #14
                            Happy Fathers Day to you too! Aside from getting the gen2 kromrey kits ready, i am building this one. I think it is supposed to do the same thing. Which, would be great because no slip rings needed and no spinning coils. We will see.

                            Question on the iron bar. I understand that when the bar enters the magnetic loop it becomes charged. Does it matter the thickness of the bar? I would have to assume that a 1 inch thick bar would be better than a 1/4 inch bar but I dont know. Is it like impedance where the "more copper the better" approach is used?


                            Comment


                            • #15
                              Hi Joe,

                              Question on the iron bar. I understand that when the bar enters the magnetic loop it becomes charged. Does it matter the thickness of the bar? I would have to assume that a 1 inch thick bar would be better than a 1/4 inch bar but I dont know. Is it like impedance where the "more copper the better" approach is used?
                              The magnetic resistance to flow is known as "reluctance", and for any given material is proportional to cross sectional area. The total length of the magnetic path also enters into the equation.

                              From Wikipedia https://en.wikipedia.org/wiki/Magnetic_reluctance ........
                              Magnetic flux always forms a closed loop, as described by Maxwell's equations, but the path of the loop depends on the reluctance of the surrounding materials. It is concentrated around the path of least reluctance. Air and vacuum have high reluctance, while easily magnetized materials such as soft iron have low reluctance. The concentration of flux in low-reluctance materials forms strong temporary poles and causes mechanical forces that tend to move the materials towards regions of higher flux so it is always an attractive force (pull).

                              The reluctance of a uniform magnetic circuit can be calculated as:
                              R = l μ 0 μ r A = l μ A {\displaystyle {\mathcal {R}}={\frac {l}{\mu _{0}\mu _{r}A}}={\frac {l}{\mu A}}}
                              where
                              l is the length of the circuit in metres μ 0 {\displaystyle \scriptstyle \mu _{0}} is the permeability of vacuum, equal to 4 π 10 − 7 henry metre {\displaystyle 4\pi \times 10^{-7}\scriptstyle {\frac {\text{henry}}{\text{metre}}}} (or, kilogram meter ampere 2 second 2 {\displaystyle \scriptstyle {\frac {{\text{kilogram}}\times {\text{meter}}}{{\text{ampere}}^{2}\times {\text{second}}^{2}}}} = second volt ampere meter {\displaystyle \scriptstyle {\frac {{\text{second}}\times {\text{volt}}}{{\text{ampere}}\times {\text{meter}}}}} = joule ampere 2 meter {\displaystyle \scriptstyle {\frac {\text{joule}}{{\text{ampere}}^{2}\times {\text{meter}}}}} ) μ r {\displaystyle \scriptstyle \mu _{r}} is the relative magnetic permeability of the material (dimensionless) μ {\displaystyle \scriptstyle \mu } is the permeability of the material ( μ = μ 0 μ r {\displaystyle \scriptstyle \mu \;=\;\mu _{0}\mu _{r}} )A is the cross-sectional area of the circuit in square metres
                              I built one of these "Flux Gate Generators" and used 1/2" by "1" bars to mount the neo magnets on. A wide air gap is also required to minimize drag and produce the characteristic voltage/speed curve of this type generator. Here's a link to pictures and discussion of it on post #28 of this thread. http://www.energyscienceforum.com/forum/alternative-energy/peter-lindemann/2070-peter-lindemann-rotary-attraction-motor/page2

                              Gary Hammond,

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