Spiral torus.
I wraped the bi-conductor speaker wire three different ways: The first was too big a spiral loop and failed with a 6 1/2" I.D. but worked fine with a bobtail cinched off to form a tighter loop; The second one was wraped like a normal toroid, barrel wound, and failed all together. The third torus was spiral wraped again, only with a smaller I.D. of 2 5/8". I just set a new record with the third coil of 25.2K r.p.m. I am sure I can get it spinning even faster with more trials! This one just looks like a big doughnut, but I'm ready to challenge Marco to a contest.
I don't believe leaving space between the wraps does anything to increase the power of the magnetic field inside the Torus, and that Ampere's law applys to the Torus as well as it does to all the other electric coil configurations. The more turns of copper windings, the more powerfull the magnetic field. The Powell design would require more power to equal the field strength of a Torus with additional windings!
I wraped the bi-conductor speaker wire three different ways: The first was too big a spiral loop and failed with a 6 1/2" I.D. but worked fine with a bobtail cinched off to form a tighter loop; The second one was wraped like a normal toroid, barrel wound, and failed all together. The third torus was spiral wraped again, only with a smaller I.D. of 2 5/8". I just set a new record with the third coil of 25.2K r.p.m. I am sure I can get it spinning even faster with more trials! This one just looks like a big doughnut, but I'm ready to challenge Marco to a contest.
I don't believe leaving space between the wraps does anything to increase the power of the magnetic field inside the Torus, and that Ampere's law applys to the Torus as well as it does to all the other electric coil configurations. The more turns of copper windings, the more powerfull the magnetic field. The Powell design would require more power to equal the field strength of a Torus with additional windings!
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