On 12/16/2009 12:35 PM, Mark Iverson wrote:
Hoyt (the Insider) Stearns wrote, :-)
"The energy in the battery does not go to the kinetic energy of the rotor, it
is used as an easy way
to modify some parameters of the device."
In watching the Launch 2009 video where some closeups and animations are shown,
they show what looks
like a small electromagnet; a metallic cylinder with a coil of fine copper wire
around its end that
faces the rotor. WHAT IF that metallic cylinder is not an iron core, but is a
permanent magnet?
This is the all PM motor, and the coil is used to 'modify some parameters' as
Hoyt states. In all
PM motors, the problem that must be solved is the cogging effect. Pulse these
coils at the right
time and they cancel or reduce the cogging effect of the PM stator magnets...
And as someone here observed many months ago (Terry, maybe?), if it
takes less energy to get over a "hump" in the "cog" than you gain back
when you slide down the other side of the "hump", then you can just hook
the thing up to a big flywheel and dispense with the electromagnet.
If you *can't* do that, if a flywheel just doesn't do the job and the
motor always slows down and stops when a flywheel is substituted for the
electromagnets, then it's a very safe bet that it's under unity.
Incidentally, "the problem which must be solved" in all PM motors is
conservation of energy. Interactions of permanent magnets are
conservative, which makes it ... shall we say ... *difficult* to build a
motor out of them. (Trying to get energy out of interactions between
permanent magnets by carefully choosing the approach and retreat paths
is a lot like trying to milk energy out of the difference between two
derivatives, where the two values are obtained by taking the partials in
a different order ... trouble is, they commute, and there isn't any
difference...)
Unless someone comes up with evidence that EM fields don't superpose
linearly, all PM motors are non-starters, because the fundamental
interactions between moving charges and permanent dipoles are
conservative, and summing a bunch of conservative forces leaves you with
a conservative force. See, for instance:
http://physicsinsights.org/magnetic_motors_1.html
Yes, agree that this demo really does not prove anything, and could have easily
been configured
(monitoring V and I) to be more definitive...
NO, these guys are not stupid, so whatever they've done is probably well
thought out. Whether it's
a good strategy or not won't take more than a couple of weeks/months.
They'll draw it out a lot longer than that, I'm quite sure.
I would bet a great deal that at the end of this "demonstration", some
time in January, things will be every bit as murky as they are today.
Nothing will be revealed, nothing will be resolved.
