What's your opinion on "Consumption" as it relates to magnet only motors

[hoarybat]

Great but will an all attraction motor which then having them pull away from the stator end which is trying to pull them back eventually run down?  The page below says:

"LAW 1: Magnets RECHARGE in attraction mode"

http://www.fdp.nu/zipper/default.asp

Rather interesting no?

[mscoffman]

In my opinion neodynium magnets do not erase. But they
can loose *some* of their initial manufactured magnetic
field strength with use. And the sorted magnetic field
strength determines the position of the sticky spot in
an array of magnets. So small changes in sorted magnetic
field strength can cause large changes to device operation.

But this is the motor's problem, a design needs to have
adequate operating "margins" to continue working despite
normal component variance changes. And I don't think
this is so easily done.

Other materials besides neodynium *can* be erased. And that
erasure is tantamount to the unidirectional availability of energy
as in a discharge. This allows a device that "was" working with
neodymium magnets to be susceptible being replaced to
magnetic material that erases. The device therefore works for
awhile and then stops. And therefore the incorrect notion that
all magnets can be erased.

My feeling is that RF magnetic pulses of sufficient magnitude
could cause local heating of magnetic domains above the Currie
temperature but this is far would correspond to field strengths
and frequencies far above what magnets would normally
experience in standard use.

---

Also, my feeling is that the Perendev device was not a purely
magnetic construct.

:S:MarkSCoffman

[gyulasun]

Hi Folks,

Magnets demagnetization have been a topic here already, did some search, for I think useful info is 'buried' on that.

See these links:

http://www.overunity.com/index.php?topic=2751.msg47490#msg47490
http://www.overunity.com/index.php?topic=3519.msg56537#msg56537
http://www.overunity.com/index.php?topic=3456.msg56445#msg56445

There is one more contribution worth noting by member Liberty:

http://www.overunity.com/index.php?topic=4206.msg80162#msg80162

And unfortunately his notice has remained unanswered till now. Since then I have read elsewhere (I cannot recall where, unfortunately) that the 'flux lines' do not really move as much distance INSIDE the magnet material as they do at or away the outside of the surface, especially in repel mode.  And if there is little movements inside the magnet material, then there is little chance for eddy current heating in magnets that have conductive metal alloy components (practically ferrite/ceramic magnets are the exception for having metal components). 
And here connects Liberty's notice that because magnets are fully saturated, (this is WHY all permanent magnets have a relative permeability of between 1.06 to 1.2 or so), then flux surely finds high reluctance to change in their material.   

rgds,  Gyula

PS:  Of course I have personally found that old ferrite magnets can significantly change their original strength if treated by a strong Neo magnet but here we discuss mainly Neo magnets properties, don't we. 

PS2: The Perendev motor example does not count at all when mentioned as example for demagnatization because it has turned out to be total fraud. It never worked as the general public was told to work.

[luishan]

Check it out.

http://www.youtube.com/user/theENERGYDREAM#g/u

[e2matrix]

Liberty and FatChance!!!,

your information seems well founded and is highly encouraging to all those of us who are into the quest of magnetic engines.

Still there are some information on the net telling us differently, like the link below, which emphasizes the rundown effects
on neodymium magnets in opposing configurations.

http://www.nuscam.com/perendev.htm

I would really appreciate your comment on this information, which seems to be quite different to your conclusions.

Gwandau

Don't put too much weight on anything you read at nuscam.com as I know well the history of that site, why it was made and how it is now largely just a site with little maintenance that was eventually obtained after some legal battles by the person it was originally intended to harass.  While I know the current owner is a good researcher I believe he has largely left this web site in a way that will tend to confuse some things (for a reason) rather than be a good source of info.   Perendev however as I think others have mentioned was probably a scam.   
   Sounds like you have a project worth continuing even if the wear down issue did come up at some point.