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[DA]

Busy day as usual this end.

Have posted First New Tacho results and movie link so you can see the latching occur.

http://overunity.org.uk/forum/index.php?topic=71.0

Sorry cannot be bothered to type it all again LOL
Cheers

Sean.

What is the spike at about 400 rpm?

DA

[PolyMatrix]

Thought: For it to keep going at top speed the stator 'push' should match the fricitional slowing of the main wheel. So it would latch, push, skip(s), latch, push, etc.

Because at different speeds and considering the friction and moment of inertia, there will be either magnetic drag or magnetic push. At the chaos point exactly mid point of the bar magnet the smallest of movements increases the speed of the stator magnet. It now becomes a question of timing between when the next bar magnet meets up with the stator and by how much the angular momentum is slowed by the onrushing bar magnet.

The key has to be the ratio of weight and magnetic strength.

Sorry just fascinated and thinking at keyboard.

[Omnibus]

@PolyMatrix,

Not a bad rumination. It appears that for the given rotor weight (most of us are trying to build very close replicas of the original) the most important factor is the ratio between the rotor and stator field strength as well as the proper form of the fields.

[ken_nyus]

Hope this might be of help
I used my sound card and constructed a transducer consisting of a ferrite core and around 20 turns of copper wire, the measurement is taken approximately 1 inch from the stator while I maintained AGW lock by spinning the rotor manually.
What your seeing is 2 cycles of the stator.
http://cosmopod.com/mysite/barefm/op/stator2cycles.jpg

!
!
!  O   []
!
!

Exclamations represent rotor edge.
"O" represents stator
[] represents transducer

And here is a 28 second audio sample
http://cosmopod.com/mysite/barefm/op/statorwave.rar

Hey RB,

Al's scope readings show a pretty symmetrical curve, almost a saw-wave.

Are you measuring something different?

I have very little idea on how to interpret properly either measurement, but why do they not agree?

[Omnibus]

Here are the magnetic induction values in kgauss of my current cylindrical rotor magnets measured at the same place on the surface of each magnet:

4.64     -4.54
4.68     -4.50
4.60     -4.48
4.70     -4.48
4.50     -4.45
4.70     -4.57
4.67     -4.58
4.66     -4.44

Can't measure the stator magnets because it's hard to get them out of their encasements. Wonder what @alsetalokin's data from the same measurement might be. Also, it's interesting if someone else could post such data.

[RunningBare]

Hey RB,

Al's scope readings show a pretty symmetrical curve, almost a saw-wave.

Are you measuring something different?

I have very little idea on how to interpret properly either measurement, but why do they not agree?

It is the stator I'm measuring, at the distance I was measuring and the reduced sensitivity, the coil could not detect the rotor magnets, also I was able to listen while spinning up.

Keep in mind I'm using a zinger for the stator, its quite likely these cheaply made magnets do not have a uniform field
But I do have to say that a triangular wave form is the last thing I expected to see from a diametrically magnetized cylinder.

[ken_nyus]

Early stator reading from Al...

(http://www.overunity.org.uk/ocpm/snoc3.jpg)

Later dual coil reading of stator was called symmetry_t1.JPG, can't find that link right now.

[edit to try and attach the image]

[multiuser]

hi @ all

sorry, i?m new in this technology, but very intrested in it...

haw many replications does running in this time?
i saw many videos in youtube and co...

are there "plans" for this kind of "motor"?

thanks a lot,
robert

[MeggerMan]

@Robert:
http://www.ospmm.org/whipmag/pdf/OC_motor_011708.pdf

@All,

I've been thinking, you know the sink science experiment showing that beyond a certain rotor (water driven neodymium magnets) speed the ball bearing (stator) reverses direction.
http://www.youtube.com/watch?v=tqEd3KHuEHU

So could it be that Al's stator is the ball bearing reversing direction, in this case syncing.
So in effect the rotor is kicked onwards and likewise the stator is propelled ever faster in AGW rotation.
Someone has probably already suggested this as an idea anyway.

Hmmm, two rotors, one above the other, one with neo magnets fixed to the rotor poles facing up and a second rotor with ball bearings fitted to stiff springs allowing a small to and fro movement.

Regards
Rob

[Rosphere]

...Do you think that would be a criterion for the correct rotor to stator magnet induction ratio?

@Omnibus,

I think that this 'GW-stator lock' we are discussing here is a factor of many things.  If I were to order these things in descending influence they might be:  rotor speed, stator rotational inertia, relative magnet strengths, distance between magnets, and stator bearing friction.  Did I miss anything?

What I find most curious was the one stator that slowly rolled over 180 degrees to match the polarity of the other stator facing the rotor.  Why should the magnetically balanced rotor favor only one face of the locked GW-stators?

Perhaps the rotor magnets were not as balanced as we assume?