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Author Topic: opposite polarity what does it mean exactly  (Read 11932 times)

Offline hoarybat

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opposite polarity what does it mean exactly
« on: August 06, 2009, 04:06:13 PM »
Hi all! Great forum first time here!  I too am going to give a magnet motor a whirl.  I do have one concern which maybe u could help with in RED below:  what does the highlight below mean exactly?  I am attempting to build my motor with repulsion (like poles facing).  Is opposite polarity = is N-N/S-S repulsion (same polarity) = de-magnitizing?  I don't wan't to kill the magnets because if it is turning for a while and slowly loses power, what good is it right?  My first prototype worked OK for a start and turned on its own but was too small to really get going fast.  I am investing to make it larger to increase the speed based on my design.  I am using permanent ceramic magnets first to test the theory since they were less $$ NeoD.  Below is 1 of 3 ways to demagnatize a magnet:

2) Via a demagnetizing magnetic field: permanent magnets exhibit a characteristic called coercivity, which is the ability of a material to withstand being demagnetized by an applied magnetic field. Modern permanent magnet materials such as Sm-Co and Nd-Fe-B have high coercivities; older materials such as Alnico or ceramic [hard ferrite] materials have lower coercivities. With a strong enough magnetic field of opposite polarity, it is therefore possible to demagnetize the magnet [whether this comes from another permanent magnet, or a solenoid]. Interestingly, an opposing magnetic field is sometimes applied to a magnet in order to 'knock it down', or to lower its overall magnetic output, so that it can be used appropriately in an application.

Many thanks in advance HB

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Offline hoarybat

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Re: opposite polarity what does it mean exactly
« Reply #1 on: August 10, 2009, 03:33:14 AM »
Does anyone have an answer to help me?  Googled to death and can't find a correlation.

Offline poynt99

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Re: opposite polarity what does it mean exactly
« Reply #2 on: August 10, 2009, 04:31:21 AM »
hoarybat,

That is a typo.

It should read something like "opposing poles", meaning poles of the same polarity, i.e. in repulsion.

As mentioned, magnets with low coercivity have this problem of becoming demagnetized when used with opposing poles. With neos and SmCo mags, this should not be as much a problem, if at all, but I am not an expert on magnets.

If you have a choice, it might be wise to go with an attraction style motor then.

So you have a self-runner do you? Could you post a video please?

.99

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Re: opposite polarity what does it mean exactly
« Reply #2 on: August 10, 2009, 04:31:21 AM »
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Offline gyulasun

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Re: opposite polarity what does it mean exactly
« Reply #3 on: August 10, 2009, 11:37:30 AM »
Hi hoarybat,

Member Honk made a setup with opposing pole Neo magnets close to each other and after some months he could not find any flux loss from the magnets.  While this is a static case, you may ask what about the moving repel magnets close to each other, and whether eddy current will heat up the body of the metal magnets? (Your ceramic magnets are surely not prone to eddy currents.)

So the answer is this link here: http://www.overunity.com/index.php?topic=2751.msg56551#msg56551

See also Honk's thoughts here: http://www.overunity.com/index.php?topic=3456.msg56445#msg56445

Regarding your original question, I agree with poynt99, it must be a loose usage of words.

Any chance you may explain your working setup?

rgds, Gyula

Offline maw2432

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Re: opposite polarity what does it mean exactly
« Reply #4 on: August 10, 2009, 02:39:36 PM »
Hoarybat,

Do you have any photos of your working motor?

Bill

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Re: opposite polarity what does it mean exactly
« Reply #4 on: August 10, 2009, 02:39:36 PM »
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Offline hoarybat

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Re: opposite polarity what does it mean exactly
« Reply #5 on: August 10, 2009, 03:22:03 PM »
Thank you both for the clarification and links.  I would be glad to tell you about my setup. My first initial prototype in which I used a bicycle wheel eventually broke the bearings because I used it flat/horizontally.  I am now using the magnets from that and purchased more for the latest project.  I had problems after my first run so I don't have a movie of it working yet as I'll explain.  It is a 360 fixed outside stator and rotor setup in a closed loop.  I feel the latter is the key to success in this design. Unfortunately it is over 7 ft. wide and is very hard to work with and leveling it.  I need to beef up the rotor/table support it and make it level and stable.  A daunting task to say the least because of the width and weight it makes it unstable.  I have welded support beams coming off a car hub/wheel.  It has hundreds of magnets.  That is why I went with permanent ceramics so I could test the principal as cheaply as possible.  Right now I have most of the magnets off while I make leveling and stability repairs.  I have spent nearly two years from concept to first trial run.  Since it is a closed loop I had no way to stop it so I had to screw it all down, add the closed loop rotor and stator magnets, take out the screws and 2x4 board holding it from moving and voila! it started to rotate on its own albeit slowly.  It did slightly more than a 360, the rotor veered down on one side and up on the other (stability problem) and stopped.  So I look at it as a successful first try on this design and maybe some good things will come.  I remember reading that ceramics lost power over time in comparison to Neo etc.  and hope at least I can get this thing rotating in the near future all on its own.  When I return from vacation next week,  I will post a picture of my setup.

Thanks again...
« Last Edit: August 10, 2009, 03:47:44 PM by hoarybat »

Offline hoarybat

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Re: opposite polarity what does it mean exactly
« Reply #6 on: August 19, 2009, 04:34:17 PM »
Hello, below is the picture of my setup minus the magnets.  I just finished leveling it and my next task is to stabilize it via a pipe which will go through wood and into the wheel hub.  Within a week or so I should have the stabilization finished and another week to affix the magnets which always presents its own stabilization issues since they are at the outside perimeter.  Cheers all!


Free Energy | searching for free energy and discussing free energy

Re: opposite polarity what does it mean exactly
« Reply #6 on: August 19, 2009, 04:34:17 PM »
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Offline 0c

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Re: opposite polarity what does it mean exactly
« Reply #7 on: August 19, 2009, 04:50:40 PM »
Reminiscent of some of Howard Johnson's work. Also looks like something Dusty would appreciate.

Good luck!

0c

Offline Bubba1

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Re: opposite polarity what does it mean exactly
« Reply #8 on: August 21, 2009, 02:59:34 AM »
Yeah, good luck and keep in touch.

Free Energy | searching for free energy and discussing free energy

Re: opposite polarity what does it mean exactly
« Reply #8 on: August 21, 2009, 02:59:34 AM »
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Offline onthecuttingedge2005

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Re: opposite polarity what does it mean exactly
« Reply #9 on: August 21, 2009, 03:27:26 AM »
Hello, below is the picture of my setup minus the magnets.  I just finished leveling it and my next task is to stabilize it via a pipe which will go through wood and into the wheel hub.  Within a week or so I should have the stabilization finished and another week to affix the magnets which always presents its own stabilization issues since they are at the outside perimeter.  Cheers all!

Hi hoarybat.

Great design and a very good shop I might say, thanks for the pic.

I just wanted to say, I wish you the best because I know where this is going so I won't apply to it. I just wish more people would get involved with Super Solar Cells, this is where the road is paved.

Good luck though, I just don't like bad news.

make 'direct' energy, don't use forces, it cost you plenty when you do.

Magnetism and Gravity are forces don't let anyone confuse you. Although I would still love to see your experiment, it will be grand, I know it.

Cheeri'O
Jerry ;)

Offline hoarybat

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Re: opposite polarity what does it mean exactly
« Reply #10 on: September 23, 2009, 11:43:56 PM »
Thanks but I am still hanging in there.  I am probably a couple weeks away from my first run since adjustments such as the stability below.  It was essential with junkyard parts and things made from wood.  This is rather crude but we'll see.  Anyway the pipe I installed stabilized it.  To make it the bearing (the wood lol) I bore a 1 inch hole and the outside diameter of the pipe was just a little larger.  I heated the pipe up and burnt a smooth surface thru the blocks of wood, put a little grease on it and it seems fine.  Picture below.  Also below is a picture of me drying some of the many rotor magnets which I had to cut.  UH endless hours of work.  I used a steel bunny cage as a drying rack.  If you ever have to cut magnets, use a tile saw and after you create all that mag dust which loves to give you metal splinters in your fingers,  just dip the magnet in a bucket of water and it turns them into a slurry which you can easily wipe off.  I then put the magnets onto my bunny cage for drying prying to hot gluing on my rotor and stator.  See ya in a few days or weeks when I am at the next stage.


Free Energy | searching for free energy and discussing free energy

Re: opposite polarity what does it mean exactly
« Reply #10 on: September 23, 2009, 11:43:56 PM »
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Offline Xaverius

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Re: opposite polarity what does it mean exactly
« Reply #11 on: September 24, 2009, 09:18:15 PM »
Can you provide a schematic or Theory of Operation as to how this device works, that is, how the magnets are configured to provide energy?

Offline hoarybat

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Re: opposite polarity what does it mean exactly
« Reply #12 on: June 01, 2010, 04:46:11 AM »
Hi guys I am back from a very long illness and layoff.  I hope to resume work on my magnet motor and have changed the the entire design/alignment of stator to rotor.  I don't have enough $$ to complete the 8ft. wheel with NEO's so I am building a 4 ft. diameter rotor mounted on top of a bicycle wheel.  Right now I am testing on the big 8 ft. rotor for efficacy before applying to 4ft. setup.  I have also switched the design to repulsion hoping there will be minimal or no demagnetization.  Of course its all about getting this thing rotating on its own first and that will be the toughest but it is fun trying despite the loss of blood, bruised and cut fingers from 1x2" NEOS colliding into me during this project.  Despite all the precautions accidents happen...

 

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