Lutec 1000 inventor speaks out !

[hartiberlin]

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.

[Vorg]

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.

[prometheus_effect]

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

[hartiberlin]

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.

[Vorg]

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.