Poles Reversing

[Kator01]

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]

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]

Sean,

no hurry, take time. pictures not necessary.

Kator

[CLaNZeR]

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]

I thought I would have a go with some ferrite magnets without the holes and still same result.



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.