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Author Topic: magnetic flux shielding idea  (Read 16515 times)

Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #15 on: March 02, 2007, 05:06:12 AM »
I was trying some experiments that showed promise for shielding.  I figured it was just a mechanical problem.  When I saw that simple pieces of steel (like a bread knife) would shield a rare-earth magnet I started trying to find a way to move the shield over the magnet as closely as possible without touching it ( using bearings of some kind ).  The closest I got was a chunk of steel attached to an old hard drive spindle.  When the shield got close to the magnet it shot above it and wanted to stay there.  So I attached an elastic band to resist this.  I found I could get very close to equilibrium, i.e. it took very little force to move the shield into place and back (exposing the magnet).  I'm almost convinced this could lead to a shield that takes less energy than the attraction of the magnet it shields.  It takes a lot of time experimenting though.

Free Energy | searching for free energy and discussing free energy

Re: magnetic flux shielding idea
« Reply #15 on: March 02, 2007, 05:06:12 AM »

Offline gyulasun

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Re: magnetic flux shielding idea
« Reply #16 on: March 02, 2007, 11:10:51 AM »
Hi rrintoul,

Your solution sounds interesting. Could you share some more details?  i.e.  what distance is the shield able to cover?  how does the surface area of the shield compares to that of the magnet?  what size has got the magnet, is it also from a harddrive?  etc.

If you could make a photo from your setup it would be the best but of course only if you wish to do so.

Thanks
Gyula

Free Energy | searching for free energy and discussing free energy


Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #17 on: March 02, 2007, 08:27:50 PM »
Thanks Gyula,

The shield naturally wants to cover the entire magnet.  The elastic band is tensioned enough that it tries to resist this attraction and uncover the magnet.  The magnet was from a package of rare-earth magnets from Lee Valley Tools.  It was the 3/4 inch circular magnet.  I don't have the pieces assembled anymore after my move to New Zealand, but here is a crude picture.

Regards,
Reade


Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #18 on: March 02, 2007, 08:33:43 PM »
I think that some kind of rolling bearings to either side of the magnet so the shield slides just over but not touching would resist the attractive forces better.  I think that would scale better and allow for a very strong magnet.  I just couldn't find parts to do that.


Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #19 on: March 02, 2007, 08:41:02 PM »
The shield itself was just some bracket I found that was less than 2mm thick.  From what I read the larger / longer the shield is in relation to the magnet, the better it disperses the magnetic forces.

Free Energy | searching for free energy and discussing free energy

Re: magnetic flux shielding idea
« Reply #19 on: March 02, 2007, 08:41:02 PM »
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Offline gyulasun

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Re: magnetic flux shielding idea
« Reply #20 on: March 03, 2007, 01:05:48 AM »
Hi Reade,

Thanks for the drawing, it worths a thousand words  :)


Quote
... I think that some kind of rolling bearings to either side of the magnet so the shield slides just over but not touching would resist the attractive forces better.  I think that would scale better and allow for a very strong magnet. ...

Yes I understand and agree, otherwise the shaft + its bearings holding the shield piece should be made very robust to withstand the huge forces involved.

Maybe a U shaped shield could be also be considered, I think, also with rolling bearings.

I 'borrowed' the U shaped shield idea from the LEMA setup (Low energy magnetic actuator), see Steorn patent drawings here
http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=US2006066428&F=0
you may have seen it.

Thanks again,
Gyula

Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #21 on: March 03, 2007, 02:44:07 AM »
I hadn't seen that link from Steorn.  Very cool!  I wondered if magnets in a row like that would help slide the shield.  It looks like it.  I can't wait to hear Steorn's next announcement early next month.

Thanks Gyula.

Reade

Free Energy | searching for free energy and discussing free energy

Re: magnetic flux shielding idea
« Reply #21 on: March 03, 2007, 02:44:07 AM »
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Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #22 on: March 03, 2007, 02:48:19 AM »
My own experience with how close I was to getting the shield on/off so easily coupled with the fact that it looks like Steorn's using a similar approach actually makes me start to think they might not be a hoax after all. :)

Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #23 on: March 03, 2007, 04:05:49 AM »
You've probably seen this video of a guy trying to replicate Steorn's LEMA:
http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=US2006066428&F=0

It's really good, especially at the end.  So now I'm getting really convinced of what Steorn's doing.  In Wikipedia it says Steorn claims that patent is not related to their big news but that would fit perfectly with trying to throw people off the trail.  Because if you can turn a permanent magnet on/off with less power than the exposed magnet can produce then that's all you need to prove you can make an over-unity device. 

Offline gyulasun

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Re: magnetic flux shielding idea
« Reply #24 on: March 03, 2007, 12:08:04 PM »
Hi Reade,

You accidentaly gave the Steorn patent link instead of the video link.

Well, it is possible they deny on purpose that their device includes  the LEMA concept but I think it is a 50% chance. There are so many unknown magnetic phenomena to be explored...

In this Forum you can find several topics on Steorn, like this one dealing with the LEMA concept:
http://www.overunity.com/index.php/topic,1815.0.html

Regards
Gyula

Free Energy | searching for free energy and discussing free energy

Re: magnetic flux shielding idea
« Reply #24 on: March 03, 2007, 12:08:04 PM »
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Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #25 on: March 03, 2007, 07:40:07 PM »

Thanks Gyula.  I think I've seen all the relevant forums now from this site.  Ya, the video in that forum was the one I was talking about.  Two things I noticed though - I heard that Shaun said his was a permanent magnet acting on a ferrous metal.  That's consistent with what I tried, because you don't want that side of it to interact with the shield.  In the video Craig uses magnets on both sides.  Also, in the Steorn patent the shield is as close as possible to the magnet whereas in Craig's video the shield is pretty far away.  Since the magnetic field drops off so quickly, you don't have a lot of distance to play with, so putting the shield that far away from the magnet loses you a lot of power.

Reade

Offline rrintoul

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Re: magnetic flux shielding idea
« Reply #26 on: March 03, 2007, 07:45:13 PM »
When the shield is really close to the magnet it makes it so much harder to move the shield.  That's the crux of what Steorn has accomplished I think.  By experimenting with the width of the shield and the placement of the row of magnets you try to find an equilibrium like I did with the elastic band, so it's possible to move the shield with low energy.

Reade


Offline superhero

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Re: magnetic flux shielding idea
« Reply #27 on: July 05, 2014, 02:50:49 AM »
I was trying some experiments that showed promise for shielding.  I figured it was just a mechanical problem.  When I saw that simple pieces of steel (like a bread knife) would shield a rare-earth magnet I started trying to find a way to move the shield over the magnet as closely as possible without touching it ( using bearings of some kind ).  The closest I got was a chunk of steel attached to an old hard drive spindle.  When the shield got close to the magnet it shot above it and wanted to stay there.  So I attached an elastic band to resist this.  I found I could get very close to equilibrium, i.e. it took very little force to move the shield into place and back (exposing the magnet).  I'm almost convinced this could lead to a shield that takes less energy than the attraction of the magnet it shields.  It takes a lot of time experimenting though.
Omg please check this video.  The best magnetic shielding is spin.  This video shows 55lbs magnet losing its attraction to a steel disk due to spin. Enjoy
Also Watch "The best magnetic shielding is spin" on YouTube
The best magnetic shielding is spin:http://youtu.be/8C6uyQ0bct4

Offline Tito L. Oracion

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Re: magnetic flux shielding idea
« Reply #28 on: July 05, 2014, 03:25:57 AM »
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