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Mechanical free energy devices => mechanic => Topic started by: hartiberlin on April 05, 2005, 11:41:49 PM
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Hi All,
here is an interview with one of the inventors
of the Lutec 1000 unit.
http://yowusa.com/Audio/audio.html
It is very interesting to hear.
They also describe on the website, how it works
and that they are currently waiting on a new commutator.
Seems, they have the same problems as Newman
had with his commutator !
Regards, Stefan.
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I've been seeing post about problems with magnets quickly draining dry in magnet motors. Some say one type does it, another says another type is the problem. But standard PM/coil motors like you find in R/C cars don't loose their fields, and this guy is claiming 1200 year life span on the magnets. Just what are the conditions that deplete magnets and what types have this problem. I'm getting ready to order some parts from B.G. Micro for a project and I see they have Nickel/Neodymium magnets, .5" diameter with 8 pound pull, 2 piece set for $1.79. I was thinking of getting a few to experment with latter.
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Hi Vorg,
Magnets are created by physically altering the random orientation of the iron atoms so they all point in the same direction and stay that way. This aligns their spinning electrons and thus the individual fields of each aligned iron atom adds to it's neighbours. This trick requires two effects:
1) The physical shape of the iron atom is altered by adding in other atoms so that it does not easily rotate or move about. Sort of like making a sphere (which will rotate easily when packed tightly together) into a diamond (which will not rotate easily when packed tightly together).
2) A very large magnetic field is applied causing most of the now diamond shaped iron molecules to achieve alignment as they physically rotate and align. You an actually hear this happening.
The energy of a magnet is a measure of its ability to oppose demagnetising forces and NOT how much energy it contains. The higher the energy, the stiffer the field produced by the magnet against demagnetising forces. Loss of field energy is caused by events which assist the unalignment of the molecules. Such events include:
1) High reverse fields which assist molecules flipping alignment.
2) Shock which assists molecules breaking alignment.
3) Heat which assists molecules breaking alignment.
The bottom line is if you want stable fields in trying environments buy GOOD magnets, from manufacturers who control the quality of the raw materials and formulations. Then limit the application of high reverse fields, temperature and vibration extremes.
Have fun,
Prometheus_Effect
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You also have to watch out for eddy currents in Neodym magnets !
The Helmut Goebkes magnetmotor demagnetized, cause Neodym is
CONDUCTIVE and eddy currents heated it up and changed the inner structure
probably going over the Curi point.
So in some applications nonconductive ferrite magnets are better !
Regards, Stefan.
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So it's better to not expose them to matching poles (n-n s-s), try to only use atracting poles (n-s) right? I take it switching poles is also what creates the eddies? So if it's setup so N poles only see South poles, both problems sould be avoided? Since they use such magnets in motors, there must be a way to prevent the edies.
How would magnets react to bismith? From what I've read it repels both poles. Seems that would aid in demagnatizing also regardless of magnet type.
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Hi Vorg,
I suggest you checkout http://www.magnetsales.com/index.htm especially their design guide. It's a good reference.
Regards,
Prometheus_Effect
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So it's better to not expose them to matching poles (n-n s-s), try to only use atracting poles (n-s) right? I take it switching poles is also what creates the eddies? So if it's setup so N poles only see South poles, both problems sould be avoided? Since they use such magnets in motors, there must be a way to prevent the edies.
The brushless disc type generator I built using 2" x 1" round neodymium magnets has 10 of them installed in a N - S - N - S manner on the 16" rotor. During the experimenting I've done in this last year, I've subjected these magnets to high and low voltage pulses, AC and DC pulses, higher speeds and lower speeds past amorphous iron shot cores and #6 AWG coilwire. It's been used as a dynamo and as a plain drivin generator with duty cycles as long as almost a day without stopping. They've seen high amperages and heavy loading.
Let me be the first to assure everyone that there is absolutely NO sign of any weakening in these neo's. They'll grab a wrench or screwdriver out of your hand in a heartbeat and keep it. :)
What they haven't been subjected to is being dropped, banged, abused, excessive heating, or other stationary magnetic fields. Also, I have NO IRON in the frame of the generator.
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Hi Rlm555339,
That is as it should be. Have a look at the attached BH curves for a range of Neos and you will see that over most of the marnets useful range it's flux output is very flat and thus there will be little eddy current flow in the magnet. Also with a operating temp of 150deg C it will take a LOT of eddy currents to push the magnet's temp beyond that.
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With Neos.....any impact strong enough to effect any noticeable degaussing would be beyond the material's breaking point anyway....
Stefan is correct about ferrite ceramic magnets....their uses, both separate and in contact with Neos is very useful.
There is a product called the 'battery doubler' which makes use of a small square of the much ballyhooed YT magnet material. Suffice it to say that Neos are showing their age....(just not publicly as of yet).
Peace,
TS out
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There is not a lot of information since the scooter came out. Do you have any YT references?
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Well, they are not as strong as some reports I've seen....expensive and about double the density of Neo's in commensurate sizes. The only source I found seems to be out of business.
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That sounds about par for the course....
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One might be able to obtain the "Mighty YT" through this wholesaler:
http://www.balli.com/handy-phone/
Peace,
M.R.
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Attn Kysmett:
Curious about this "scooter" you are refering to. Do you have a link so I can take a look
see.
sugra
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Apparently the Sciex corporation is puting together a scooter with enormous range. Here is one of the links below. Google search sciex scooter for more.
Enjoy
http://hsv.com/writers/bearden/flash/flash.htm
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Well there goes my idea it looks. But then, mine wont weigh in as much as that will.
The four batteries alone is too much in my books. I was thinking on the lines more of
4 motor scooter batteries. Then if I build it my self, hey too bad.
Still haveing the time of my life making it too. Now if I could just figure out how to
convert over to hall effect. Reeds work but dont like the beatings they get. Let see,
4 pulses per rev, 1700 rpm, OUCH. ;D
Sugra