Rotational PMM by wizkycho

[wizkycho]

@ooandioo

To understand I've made a test. Please look at the picture. If you take a very thin peace of steel and then hold this in front of a pole of a strong magnet, then you have weakened the repelling forces but not neutralize them or turn it into attraction. So if you hold now another magnet with the same pol to the shielded magnet, they both repell each other but not as strong as without the shielding. And more is not needed. For this test it's important that the shielding is closer to the shielded magnet, so in no way we have attraction to the other magnet.

M.

1. Your shield DOES NOT "HANDSHAKE" (NOT U shaped like it should be) south pole which would VERY VERY GREATLY LOWER down REPEL force and allow You to move your right magnet much much closer. South pole will compensate north poles repel (some of it).


2. needed small ATTRACTION CAN OCCUR in TWO cases

? ? ?a. If You now move slowly Your right magnet further appart You will come to the point where NO forces ATTR Or REPEL occurs This is zero zone (have You heard of it. think its edvin grey or garry but this zone really exists try it) and is not that narrow as I have represented it in callibration animation. if moving further appart (slowly) You can feel slight attraction. this is the right distance. still magnet no close enough ? go read b. method.

? ? ?b. (1. must be made first - u shaped to close on itself south)? method more appropriate for working device. make the shield thicker so that one magnet's (ring) complete flux? closes on its own south and satturate steel (high permeable(4000) steel, with high satturation 1.3T - if higher could be thiner.) to say from 80 to 95 % of its max. satturation. Then the other (right) magnet can now again move much closer cause part of its field can (missing 5 - 20 % to steel's max satturation) penertrate shield and close to south (of ring mag) through steel. Now move the right magnet again closer till you feel slight repel then slowly appart till you feel slight attract (little behind zero zone). Now there is the best position for the rotor magnet.
If You think that magnet is still too distanced to fully catch repel when shield removes - make thicker shield and callibrate again.

Rotor magnet must be allways on or little behind zero zone (see the callibration animation) to feel none or little attraction. This sounds like pretty neat job but actually can be done in minutes with no any meassuring devices but fingers.

even If You miss exact spot you still have slight repel (well don't push it as donkey would) and that repel is still Walley against strong outer ring repel Hill.

[m668004]

@wizkycho

I don't want to use such a flat shield for a device like yours. It was only a quick test. Nothing more.

[ooandioo]

Ok. If there really is a zero point and you can adjust the inner magnets to head it, the machine would do what is should.
Still i believe, the zero point is right to far away from the shield so the repell force of the outer magnets are quite to less to provide extra power while rotating.
I think we'll have to test it practically. I dont't know, i believe we are missing something here...

-- Andi

[m668004]

ooandioo:

I think we'll have to test it practically. I dont't know, i believe we are missing something here...

Yes, to build such a machine would give last certainty. I think it wouldn't be that expensive or complicated.

M.

[m668004]

@wizkycho and all

To allow an easy to build device I changed the design a little bit. Please look at the picture. Only 3 magnets would be needed. 1 ringmagnet as stator and 2 diskmagnets as output-rotor. The picture is only a scheme. In my opinion this design would work too if the working principle is valid. What do you think?

M.