Permanent magnet motor

[Jim36]

Ayeaye,

Yes the material can be demagnetised electrically. This wouldn't be required though as you can just re-magnetise it the way you require, rather than de-magnetising and re-magnetising. The material has a cocervicity point, this is the strength of magnetic field intensity required to demagnetise the material (in amps/meter) this is also the point to re-magnetise. This is what the BH curve of a magnetic material is all about, have a look into it. Wind it the way you want it magnetising (in this case toroidal winding style) and if low resistant wire is used and correct amount of ampere  turns are made to exceed the cocervicity point it can be re-magnetise with a battery. I will make an attempt this weekend and post the results here.

[ayeaye]

Thanks Jim36, great.

So it looks like that re-magnetization of these ring magnets is quite doable with means almost all people can afford.

One thing about this paper clip experiment though. It likely really is how it is shown in that video. But then this paper clip experiment is not enough to show that the field is completely circular. When the ring magnet is split, the field concentrates to poles, so the poles can lift a paper clip. But when the ring magnet is a whole, this field distributes more evenly around the magnet, this is certain, and no one has ever questioned it.

But then there may be additional poles, like say there are some 10 of them. The paper clip experiment really works the way it is shown, because each of these 10 additional poles are weaker than the poles when the ring magnet is split. Yet with 10, or even with 20 or more additional poles, the field is not completely circular, and thus the magnet will not rotate continuously.

The ring magnets in that video are also quite weak, alnico or iron, but likely a material which doesn't provide a lot of force. Like some horseshoe magnets, also alnico or iron, they can barely lift a paper clip. With so weak magnets, the difference between lifting a paper clip and not lifting a paper clip comes easily, because the magnet can barely lift a paper clip.

So this video doesn't really show more than is obvious, the field sure distributes more when the ring magnet is a whole. Thus this video does not prove really anything, shows nothing more than is already known.

Saying that, i still think that magnetizing a ring magnet is the best possible way to achieve a circular field, and may be the only way when a completely circular field is even possible.

The working device which i saw as a kid was also likely made that way, if that was not a dream as i said. It was nothing but a ring magnet, similar to that in that video. It rotated on some bearings, and another magnet was held against the side of it with pliers. This other magnet was like a small segment of a ceramic ring magnet, held against it as i remember, with a flat side, that is pole, towards the ring magnet. When the other magnet was close, the ring magnet rotated very fast. As i said, maybe it was a dream.

Nevertheless, it is worth to try, as it is not tested yet, and it is not entirely excluded that it may work.

[ayeaye]

Magnetizing is not that easy i think, like they use 8000 amperes to magnetize the common neodymium magnets. 8000 amperes, though only for a brief moment. For magnetizing such weaker magnet, so much current is not necessary, yet i think it needs quite a lot. If one has a welding transformer, then this might do the thing. I'm not sure though whether a wire from a power cable is enough for a coil, certainly not anything thinner.

This guy used capacitors to get 300 volts, then discharged them through the welding fuse and the coil. This doesn't say much about the current, except that the current used for welding is as much as i know at least 100 amperes, very common is several hundred amperes. Apparently this was enough for magnetizing his ring magnet, though likely very weakly.

Capacitors, this may be because the house fuse doesn't let through as many amperes as necessary. When the current comes from capacitors, then that's not a problem. I guess he filled capacitors with 320 volts from three phases he could get. So then one needs a big capacitor, at least.

[lumen]

One might just punch out some ring magnets from a rubber magnetic strip and then magnetize them by rotating them between two neodymium magnets.
Sounds a bit easier.

[ayeaye]

One might just punch out some ring magnets from a rubber magnetic strip and then magnetize them by rotating them between two neodymium magnets.
Sounds a bit easier.

Right but, may be the worst option. Likely too weak, and a low quality material which is the most likely to produce additional poles, the very thing that should be avoided.

All the problem about magnet motors is to have more positive force than friction, see my experiment and repeat it, you may see there is overunity https://archive.org/details/Flcm3 . Means, with no friction, even such chain of magnets would rotate continuously, even without the field being completely circular. But without enough asymmetry, the overunity is not enough to overcome friction. The circular field is the most asymmetric, that is, an ideal case where in the field lines chain there are no field lines in the opposite direction. Also the Faraday's homopolar motor, which Jim36 described here, works because of the circular magnetic field. So that a continuous rotation with a circular field is possible, is already known.

We are in a very difficult situation here. We supposed to go to the extreme with something, with the highest quality, to see the maximum which is achievable. And at the same time we supposed to do that cheaper than most of the ordinary things are made, so that many can repeat it. And in such conditions no one knowingly has succeeded to achieve continuous rotation. Maybe some people call that a proof that there cannot be overunity, but to me it sounds more like a self-proving argument.

Furthermore, it has been made more difficult. Namely, overunity has been made like some all in one effort. Means, the only thing considered valuable, is when a single person solves it all, and maybe even provides some practical benefit to the rest of humanity. Means no one gets any benefit from any intermediate research, necessary to achieve the end goal. Means some do some work not to talk for free, but also without any acknowledgement. One may say many reasons why this is exactly how it should be, but still it seems like a kind of extreme milking. Plus plenty of hoaxes and hypes, promoted because some get money by lies. To distract just almost everyone who otherwise could contribute to the research. All that, no wonder, makes that great final result impossible in the reality.