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Author Topic: Poles Reversing  (Read 17337 times)

CLaNZeR

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Poles Reversing
« on: October 10, 2006, 10:52:29 PM »
As said before I do not go to technical with magnets, I tend to build and try and use my little clear box full of iron filings to see the Flux gate around the different magnet configurations I set up.

But tonight I was playing with placing two magnets South against South that were kept in line using nylon thread.
I then introduced a big magnet to watch the spring effect happen and examine what effect it would have at different angles.

I was suprised to see the pole had changed in the middle of the magnet.
Is this normal?

It is easier if I attach a diagram.
(http://www.cncdudez.com/polesr.jpg)

Regards

Sean.




mikestocks2006

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Re: Poles Reversing
« Reply #1 on: October 11, 2006, 01:19:19 AM »
I think it's similar effect as the movement of a magnetized soft iron across the "neutral line"

http://www.rexresearch.com/gary/gary1.htm

Scroll down in that link to get the pole flipping effect. Fascinating stuff
It makes sence too. As at "far" distances it is oppositie but on contact it assumes the polarity of the contact pole.
So, somehwere between contact -zero distance- and "far" there is a point of pole flipping.

CLaNZeR

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Re: Poles Reversing
« Reply #2 on: October 11, 2006, 08:29:58 AM »
Thanks for the link Mike, will have a good read of that.

I forgot to say the magnet that I was playing with has remained reversed in the middle.

Regards

Sean.

Dingus Mungus

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Re: Poles Reversing
« Reply #3 on: October 11, 2006, 12:21:17 PM »
Thanks for the link Mike, will have a good read of that.

I forgot to say the magnet that I was playing with has remained reversed in the middle.

Regards

Sean.

A very interesting find...
Can you give me more exact info about the components so I can attempt to replicate it.
I will buy the parts this weekend. It is quite curious that the poles have remained flipped.
Please explain with detail... Examples: were the magnets verticaly or horizontaly stacked?
Were the magnets ceramic or NeFeB? where did you obtain them? Any other details would
be great. I'm quite interested in seeing this effect first hand.

Thanks for the interesting post!
~Dingus

Dingus Mungus

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Re: Poles Reversing
« Reply #4 on: October 11, 2006, 12:34:54 PM »

(http://www.cncdudez.com/polesr.jpg)


If you remove the left most (2 hole bar) magnet do the poles reset in the center?

Kator01

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Re: Poles Reversing
« Reply #5 on: October 11, 2006, 12:45:15 PM »
Hello CLaNZeR,

you stated that the pole stayed in this reversed mode. What happens if you sepereate the setup ( remove it from
the plastic pins ?

But before you do this : do a test by approaching this setup with the south-pole on the right and/or the north-pole
on the left.

But most important : I like to know how do you measure the location and the quality of the different poles ?
And where did you get this kind of magnets with holes in it ?

Kator01

CLaNZeR

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Re: Poles Reversing
« Reply #6 on: October 11, 2006, 01:23:52 PM »
I simply had two ferrite magnets, the ones I have been using on my wheels shown at
http://www.cncdudez.com/hamel.htm

They come with two holes already drilled and are 55mm * 25mm *10mm.

I cut 2 lengths of nylon thread and placed the magnets against each other as shown in the picture and did up the nylon nuts until the magnets were evenly hovering away from each other.

Then I pushed a strong NdFeB / Neodymium magnet against the outside dead middle of the two holes.
I was watching it spring back and forth and then pushed the big magnet fuly towards it to see how close I could get both magnets together.

Then all of a sudden the big magnet stuck to the center of it, instead of repelling away.

I then ran a small magnet across it and found the pole had reversed in the middle.

I then removed the outside magnet and tried again and still the pole in the middle is reversed.
I ran the small magnet over the other magnet and it was still normal with south on one side all along and north on the other side all along.

I then tried a couple of hours later to see if it had worn off and it had not. I will check tonight when I get home if it is still reversed.

I can send some pictures if you like and try and replicate the thing again tonight when I get back from work.

Regards

Sean.

Kator01

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Re: Poles Reversing
« Reply #7 on: October 11, 2006, 02:38:04 PM »
Sean,

no hurry, take time. pictures not necessary.

Kator

CLaNZeR

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Re: Poles Reversing
« Reply #8 on: October 11, 2006, 07:50:29 PM »
Well got home tonight and checked the magnet and the poles are still reversed in the middle of the magnet.

I then thought I would try another magnet but this time just lay it flat on the table and push the big magnet into the middle of it, within seconds the same thing, poles reversed in the middle but not on the outsides.
This has to be the holes in the magnet or summit.

I have upload an avi file which you can see what I mean. Had to zip it as for some reason uploading in just avi format was getting corrupt ?
http://www.tekit.seriouslyinternet.com/clanzeravi1.zip

@Dingus, I purchased the magnets from Magnet Applications Limited.
http://www.magnetukonline.com/products.asp?v06en0tr=J&v06T4172=EE&v06cntr=G
Stock Code FE244A 55x25x9mm 2-hole ferrite which were ?20.00 UKP for 50 of them.

Regards

Sean.

CLaNZeR

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Re: Poles Reversing
« Reply #9 on: October 11, 2006, 08:35:11 PM »
I thought I would have a go with some ferrite magnets without the holes and still same result.

(http://www.cncdudez.com/polesr2.jpg)

After drawing the picture I then thought I would try the North Side on the magnet to the right and applied the big magnet and yep ended up with the middle swapping poles.

So now I have two magnets stuck together with top Side running S-N-S-N-S-N

Good way of making different size zones I suppose on a long length of magnetic bar.

Now I wonder if I can reverse them so I can use them again !!

Regards

Sean.

Kator01

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Re: Poles Reversing
« Reply #10 on: October 12, 2006, 01:16:36 AM »
Sean,

seperate the two magnets and please report the result. If the position of poles stay push big magnet with opposing pole in the middle of each magnet.

Thank you

Kator

CLaNZeR

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Re: Poles Reversing
« Reply #11 on: October 12, 2006, 11:27:33 AM »
Hi Kator

They stay reversed in the middle if you remove the magnets.

They will swap back over if the big magnet is reversed and pushed against it again.

Regards

Sean.

Sean,

seperate the two magnets and please report the result. If the position of poles stay push big magnet with opposing pole in the middle of each magnet.

Thank you

Kator

composer

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Re: Poles Reversing
« Reply #12 on: October 18, 2006, 02:15:07 AM »
hi all,

this is my first post. I hope it's usefull.

Then, about the magnets who invert theirs poles ... it's absolutely normal.
If you put a ferrite magnet in a neodimium magnet field, you can easily magnetize the ferrite magnet with the polarity of the neodimium one (try also with only one ferrite magnet and one neodimium .... reverse and reverse again) ... it's a normal thing about different cohercitivity of two materials.

CLaNZeR

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Re: Poles Reversing
« Reply #13 on: December 17, 2006, 06:37:05 PM »
Been thinking about this reversing of poles again after seeing the post regards Steorn and new info that apparently got slipped into their Forum conversations and quickly deleted.

http://www.overunity.com/index.php/topic,1811.0.html

*******************************
A little bit of info has been linked recently.

Sean has said that the device uses a premise of 'walking a magnet' around the B_H curve.

Supposedly the rotor contains a ferrite type magnet, with a neo for the stator, such that the neo magnet temporarily reverses the pole on the ferrite
********************************

Now thinking about this and going back to using a wheel.
What if you had Neo Magnets on the wheel and the magnets faced out North and then South and then North etc etc around the wheel.

Then outside the wheel set staticly you place a ceramic magnet with say North pole facing towards the wheel magnets.
As you turn the wheel and the first Neo with North facing the North on the Ceramic magnet will hit the sticky point and repel against each other. But if you hold that position long enough then the Ceramic field will eventually give way as the poles reverse and become attracted to each other.

If you have other magnets staticly placed around the outside of the wheel and posistioned correctly then they will deliver the force to first push the magnet around to hit the sticky point but also enough power to hold it there till it forces a pole reversal and also enough power to get past the new sticky point created.
Now as the next Neo magnet approaches with its south facing outwards, the ceramic has already switched it's poles and we are back to the beginning.

I was going to try draw this up but finding it difficult as in my mind I can picture it but finding it hard to get down on paper.

What also makes sense to me now is the delay in watching the Steorn motor run where it hits a point where it sort of slowly stops some kind of device gets slowly lifted and the device spins again, could this indeed be the delay of the Ceramic switching poles?

Regards

Sean.






gyulasun

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Re: Poles Reversing
« Reply #14 on: December 17, 2006, 07:19:29 PM »
hi all,

this is my first post. I hope it's usefull.

Then, about the magnets who invert theirs poles ... it's absolutely normal.
If you put a ferrite magnet in a neodimium magnet field, you can easily magnetize the ferrite magnet with the polarity of the neodimium one (try also with only one ferrite magnet and one neodimium .... reverse and reverse again) ... it's a normal thing about different cohercitivity of two materials.

Hi composer,

Can you give some more info (web link, paper reference etc) on how quick the a ferrit magnet recover and change back to its original poles after the ''treatment'' from the stronger magnet?
Thanks,  Gyula