P.H. Sprains Antworten

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Geschrieben von Bernd am 26. Februar 2006 14:45:54:

Als Antwort auf: Funktions-Schema von P.H. Sprain's Magnetmotor veröffentlicht! geschrieben von Bernd am 23. Februar 2006 18:49:54:

Hallo Leute,
Hab mal die Konversation aus dem overunity.com-Forum zwischen Stefan Hartmann und H.P. Sprain etwas zusammengerafft. Brains Antworten in Breitschrift, alles andere meist von Stefan Hartmann. Viel Spaß beim Lesen.

Gruß, Bernd

Mr. Sprain wrote to me:
I have been working on this
project for 4 years. I have spent a little under a million dollars. I have a
patent and a working prototype (see attached photos). The rotational force
is measured using a torque sensor that allows me to put it under load just
like a real generator. I have measured the energy going into the
electromagnet voltage and current. It comes from a digital power supply so
there is no guessing as to what is being used. I'm using a super perm alloy
core for the electromagnet. A digital encoder controls the firing of the
My results:
out: 0.6 Nm at 10 radian/sec =6W
in: 19.8v @ 1.9A = 37.62W each pulse is 28 ms = 1.05 W per pulse,
3 pulses per/sec = 3.1W total input
Please see patent US6954019
Thank you,
Paul Sprain

Hi Paul,
many thanks for the pics.
Looks very nice.
Is it simular to the Takahasi motor,
Actually it's not the Takahasi motor. The patent is held under the name
But they had it all backwards. They were close but could never achieve the
torque needed.

so that
at the sticking point an electromagnet with help
kick the rotor over this sticking spot ?
No the rotor is not kicked. The electromagnet creates a zero gauss field to
allow the rotor to slip by. The radian speed after passing the ElectromaMagnet (EM) is
7 rad/sec. The rotor then accelerates thru the magnetic field reaching speeds
of 21 rad/sec just before the EM. With an average speed of 10 rad/sec.

Did you lowpass-filter the pulse current from your DC power supply,
so it does not read wrong values ?
(The supply voltage should go first via a few LC lowpassfilters to the
used supply voltage for the electromagnets, so that at the DC power supply
there will only flowing DC into the LC lowpassfilters...)
Yes, and it is read right at the EM using a digital oscilloscope and current
meter. There is no doubt as to what the EM is using.

I will have a look now at the patent.
As you can see I reference the "wankel" and many others.
Thanks !
We are building a larger version that will
produce 2 to 2.5kw and require less than 100w to run. It will be completely
self sustaining. The magnet will weight approximately 200lbs and have a
gauss strength of 6,800.

Hi Paul,
an important factor is also, how you pulse the electromagnet...
Do you pulse it at Top Dead Center with a repulsion pulse or
do you pull it in before TDC with an attraction pulse ?
I fire it at a little past top dead center. With a repulsive pulse.
The timing is very important for this pulse.
Yes I know I have a computer control the firing.

Although if you use repulsion then your rotor magnet
might get demagnetized after a few weeks of usage...
No I've been running it for over 1 year with no degaussing.
Do you have special iron or alloy cores also for the rotor and stator
magnets ?
Yes a super perm alloy this stuff is expensive the core alone for the EM
cost 1 thousand dollars

Hi Paul,
what would be interesting is to see,
if you could reuse some of the coil energy of
the electromagnet.
With the right storage circuit after the firing you could
possibly get some kick back voltage from the coil, after the
rotor magnet has passed by and use this partial energy to
help firing the next pulse.
Or do you waste this energy in a diode
parallel to the coil ?
I capture the back EMF using a one way diode and capacitor. I get back about
56% of the pulse energy.

a 2.5 KWatts motor sounds great !
The magnet will be 5.5 inches tall and 4 inches thick. Starting at the
largest air gap it is 100 Gauss increasing 20 gauss per degree to the closest
point of 6,425 gauss. It will rotate at approximately 1,200 rpm..

Yes, this concept is really great as you only need very short energy
pulses for the zeroing of the field, so the rotor magnet can again
enter the field.
The pulse width will be less than 4ms
Ahh, I see, I first throught it runs on
repulsion.... this is why your magnets don´t get
It is always better to run on attraction, but the
forces might be a bit lower or did you compare it with the
repulsion and found no difference ?
The acceleration is greater using attraction.
Using repulsion would never
bring the rotor TDC of the EM it would always fall short.
The acceleration is greater using attraction. Using repulsion would never
bring the rotor TDC of the EM it would always fall short.

I see, sound logical. But you are the first person, that really has
made it happen ! Great !
Now the question is, would it stillgenerate more output power,
if you would use for instance 3 or 4 rotor magnets inside the rotor,
so at 120 degrees or at 90 degrees ?
Good question we have a 2, 4, and 6 magnet rotor we are testing. What you
see in the video is a 2 magnet rotor. Which works better than a 1 magnet
with a counter weight.
We have a 12 thousand dollar digital rotating torque sensor that measures
the Nm force we had it made in Germany just for our machine. So we know
just what the output is underload as if it was hooked to a generator. I've
also build a axial flux alternator that captures the rotational force and
turns into 3 phase AC

Hmm,does the video , which you did send me, show a load on the rotor via
the sensor or did you only pulse the coil so shortly in time, that it did
not accelerate
more ?
Or is there some kind of accelleration speed borderline, that can not be
overcome in RPM ? Maybe generated by some kind of magnetic vortex drag ?
The sensor adds the load. And reads the difference to tell me precisely the
Nm force output.

What happens, if you don´t apply any load ? What was the problem of attaching an electrical generator to the axis to have the electrical input and output energy compared directly?
A direct proof for positive energy balance is needed. Defying standard theory (of electrodynamics, as implied in the pdf) still doesn’t prove positive energy balance. Standard theory is also that energy balance is a must and it is a more fundamental law of standard physics than those of the theory of electrodynamics. Its ostensible violation in this case, in contrast to what a standard electrodynamics theory requires, may be construed as the deficiency of that particular theory and not a proof for the violation of a major natural law.
We have built a generator and attached it . It puts out about
5.4W . Tell him to look up axial flux alternator to understand what we
Here is the picture ofhe axial flux alternator attached.

Why can't he hook it up to a generator and a bank of
ultracapitors to prove that this thing can be self running and still
generate excess power? This would be the ultimate proof and its simple
>to to implement. Otherwise it looks great. I noticed the asymetry on
the magnets in the video.
We can't do that because the output is not enough to iniate the pulse. You
need 19v @ 2.1 A or 39W to pulse the EM. Yes we only pulse it for 28
milliseconds but you have to 39W to create a fast rise time in the pulse. We
decided to build a large device where the output far exceeds the initial
wattage needed for the EM. The new EM will require 100V @ 2A or 200W however
we will only pulse it 4 milliseconds or less 70 times per second. The output
power will far exceed the 200w needed, then we will close the loop.

About the history of building the motor:
After we reached 54% we went out and purchased the torque meter to conduct
our own tests. First we shortened the shaft and added load thrust bearings
to give us less wobble. After works we tested it, the results were 74%. We
then redesigned the rotor: the old rotor weight 10lb, the new rotor weighs
4lb. We tested it again this time 135%. We then replaced the core of the EM
with a superperm alloy, this brought our input power down to a little over 3 Watts
and increased our Nm force to around .64 Per second.
The test results I sent you from year 2002 show a pulse width of 50 milliseconds.
We have been able to reduce that to 28 milliseconds or less. This has
greatly increased our efficiency. And is the key!
Also notice the rate of change in the gauss field from the "static field
test results". See how the rate of change is chaotic this is because the
magnets I'm using being square don't allow me to make a perfect archimedean
spiral. So the average rate of change is around 2 gauss per degree. If I
could come in and cut the magnet face into a perfect spiral the Nm force
would greatly increase. However the energy to the EM would remain the same.
Understand? It is all dependant on the rate of change over a certain


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