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  • #61
    Originally posted by bistander View Post
    I am not aware of any material which can reflect magnetic lines of force or B-field. Also, the iron shielding cup shown in your diagram will shunt the magnet reducing or possibly eliminating the external field, ie render the magnet ineffective.

    It might look more like this. Notice the shielding cups or sleeves along
    the bottom of the magnets used to reflect stray fields back toward
    the work or shall I say this method will intensify the field on the opposite
    end much like the magnet on your speakers.Yes it works.

    Here is an advanced builder. His name is Thane Heins and even tho this
    is not a photo of a ZFM the rotor design could be used. it also helps to
    hold the magnets more securely raising the level of safety.





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    Comment


    • #62
      zero force and misc

      Originally posted by Matthew Jones View Post
      John was the one that told us that originally in the Bedini Monopole 2 group when he first showed that video of the motor with the iron pipe. Maybe 05, 06 time frame. Those groups have long since been shut down. But I remember it well because that was one of the few times I ever got straight answer out of him. He said there is no force exerted on the magnet, the magnet rides the flux lines on the side of the coil. He talked about the switching a little bit, switching direction at the center, then he never talked about the thing again until he started showing the printed models.

      Matt
      You're right about that, it rides the flux lines and the no force in this context is that it is not pushed or pulled in opposition or attraction at the end of the core like the SG or other common arrangements. But, it also may follow the "true" magnetic field.

      There is a difference between the lines of flux and the true magnetic field of the coils and they both have different relationships with the coil and different interactions with the permanent magnet on the rotor.

      One does not interact with the Bloch Wall and one does, hence the clover leaf pattern John has drawn for years.

      There are supposed to be possible gains with this motor and that isn't supposed to come from lines of flux that do not interact with the Bloch Wall.

      I also think it is important to study the original 2 pole version with a single north and single south. Their relationship with the coils is different from the 2 coil 4 pole version. To be more analogous to the original 2 pole version, it would have to be 4 poles with 4 coils. Then, we would be comparing apples and oranges.
      Sincerely,
      Aaron Murakami

      Books, Videos, ESTC Conference Info, Blog, etc. https://emediapress.com

      Comment


      • #63
        zfm

        Originally posted by BroMikey View Post

        It might look more like this. Notice the shielding cups or sleeves along
        the bottom of the magnets used to reflect stray fields back toward
        the work or shall I say this method will intensify the field on the opposite
        end much like the magnet on your speakers.Yes it works.

        Here is an advanced builder. His name is Thane Heins and even tho this
        is not a photo of a ZFM the rotor design could be used. it also helps to
        hold the magnets more securely raising the level of safety.





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        Thane Heins was shown to have measurement error by someone I know who is beyond competent in analyzing his machines, but Thane just won't accept the results.

        I don't believe there is anything in his work that can contribute to the ZFM project.
        Sincerely,
        Aaron Murakami

        Books, Videos, ESTC Conference Info, Blog, etc. https://emediapress.com

        Comment


        • #64
          Originally posted by Aaron View Post
          Thane Heins was shown to have measurement error by someone I know who is beyond competent in analyzing his machines, but Thane just won't accept the results.

          I don't believe there is anything in his work that can contribute to the ZFM project.
          Hi Aaron
          It does seem to be the case that Thane excepts no outside input
          on his designs probably due to the constant battering over the years.
          Not by you or other good designers have done those things but others
          have, messengers who have an intent. The gov spends lots of money
          hiring people sent to drive a wedge so continuity is lost. One way or
          another division will stop projects from moving forward.

          These are the alphabetized agencies those lists are long. Thane is a
          wonderful soul, just like you are Aaron and Matthew, Dave, Peter, John.

          The experiment is all we have to follow, this is all Thane has to go on
          and his personality is gentle. He can't take it so to speak. Not tough at
          all. However Thane is a great man who is threading on thin ice as he
          looks for funding.



          Another group to follow are the wind turbine builders, they use laminates
          and practical designs that will hold up in the rain or high humidity.

          I have tried cutting block board, I have a piece that after a couple of
          years has turned to dust. Hardwood is fine at SG speeds, not at 10,000
          RPM's especially if the rotor is 1" in dia. The stress at these speeds could
          be life threatening so these mechanical designs are more about safety
          rather than promoting one man's personal agenda.

          Last edited by BroMikey; 10-18-2017, 07:30 PM.

          Comment


          • #65
            Originally posted by Turion
            I have published this before, but here is a crappy drawing.


            I use Delrin

            Holes on both sides of rotor, opposite each other. Magnets attracted to each other through thin layer of plastic. Also epoxied in place.

            The BEST drawing, the magnets are also epoxied in place, but if you think THOSE magnets are going to come out, even when you want them to, you are WRONG!!
            Oh yeah i almost forgot that design, gonna post a dia when I get time.
            That's so i don't keep forgetting.

            Comment


            • #66
              Originally posted by Turion
              I have published this before, but here is a crappy drawing.


              I use Delrin

              Holes on both sides of rotor, opposite each other. Magnets attracted to each other through thin layer of plastic. Also epoxied in place.

              The BEST drawing, the magnets are also epoxied in place, but if you think THOSE magnets are going to come out, even when you want them to, you are WRONG!!
              is that how your ZFM is now? No shielding?


              http://www.ebay.com/itm/DELRIN-PLASTIC-SHEET-1-2-THICK-12-X-12-/332155273889?hash=item4d55ff42a1:g:zBYAAOSw4CFYyV~ q:sc:USPSPriority!66006!US!-1





              http://www.ebay.com/itm/Delrin-Sheet-White-750-Thick-x-12-Width-x-12-Length-1532-/121716367649?hash=item1c56dc6121:g:QKAAAOSw-3FZE~UE



              http://www.ebay.com/itm/Delrin-Acetal-Plastic-Sheet-1-x-12-x-12-White-Color-/142529600781?hash=item212f6d1d0d:g:HRkAAOSwG-1WxUxL



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              Last edited by BroMikey; 10-15-2017, 11:11 PM.

              Comment


              • #67
                Originally posted by Turion
                I don't have shielding on mine. But that's me. I m seeing what I need to see out of the machine without shielding which just weights down the rotors.

                EDIT:
                I use Delrin 9/16 thick. Magnets are 1/4 thick. Space between magnets is 1/32 thick. This allows epoxy 1/64" of space between magnets and rotor without the surface of the magnet extending beyond the surface of the rotor. It also means that 1/64" of epoxy + 1/32" space + 1/64" epoxy totals 1/16 of solid mass between magnets once epoxy has dried.
                Sweet rotor design guy, thank you Turion-Man

                Comment


                • #68
                  https://hackaday.com/2016/03/03/materials-to-know-acetal-and-delrin/

                  What is a good solvent to use as epoxy on this stuff? Most plastics
                  can not be glued.



                  Delrin
                  glues claim to stick
                  Last edited by BroMikey; 10-18-2017, 01:55 AM.

                  Comment


                  • #69
                    http://www.permabond.com/materials_bonded/how-to-bond-acetal/

                    Permabond polyolefin primer used in conjunction with cyanoacrylate
                    adhesives offer the best strength.

                    Comment


                    • #70
                      Some what like a Zero Force Motor setup, the idea is not new.

                      https://www.youtube.com/watch?v=bfgzfl69Q20


                      Comment


                      • #71
                        Zfm

                        Originally posted by BroMikey View Post
                        Some what like a Zero Force Motor setup, the idea is not new.
                        That geometry is more similar to Babcock's motor.

                        John was building his first ZFMs in the 1970's - it most certainly wasn't new to John - nor did anyone say it was new.
                        Sincerely,
                        Aaron Murakami

                        Books, Videos, ESTC Conference Info, Blog, etc. https://emediapress.com

                        Comment


                        • #72
                          Originally posted by Aaron View Post
                          That geometry is more similar to Babcock's motor.

                          John was building his first ZFMs in the 1970's - it most certainly wasn't new to John - nor did anyone say it was new.
                          Okay, I am just coming around to understand part. The thing that
                          sticks out is that the coils bypass the right hand rule? The coils are
                          not 90 degrees to the magnet. That is why they all look the same
                          to me. Some used air cores and some not.

                          If there are any other significant differences, help me out.

                          Comment

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