Yucca,

My test rigs have always shown a change in voltage polarity with either a change in rotation direction or a change in field orientation.  Change them both and the voltage polarity remains the same. 
  The electron has basically no mass, so it easily goes either way.  Since it has (nearly) no mass it is then (nearly) impossible for it to do work or to do work on it (by textbook definition).

BWS,

Is it possible to stack several plates and then connect the plates in series to get a higher voltage out of the system?
(Plates insulated from each other.)

[EDIT] Added drawing.

Regards,
Groundloop.

@BWS:

I am not sure we need to have the same poles both facing outwards. Either a N/S or a N/N will work, but I am not sure which one.

If the disk has a CW spin when you face one side, then the other side will have a CCW spin when you face that side with the same direction of rotation.  We can easily see that the direction of rotation has changed relative to each side of the disk.

Since the direction has changed, then we should also change the pole on the other side to be opposite in order to have the same polarity, which would be a N/S configuration.  This may be the reason why your 1995 design had the cross voltage associated with it and no amount of shielding would have an effect, because each side of the disk had a different polarity.  I think a N/S configuration is the right way to have the same polarity across both sides of the disk.

It does not matter either way, but a N/S configuration would be preferable since we would not need to build two Halbach Arrays with N/N facing outwards.

If the pancake coil screws things up, then I guess we could use another method or wire segments on both sides of the disk that you mentioned and connect them in series and we should still be able to use the brushless idea with the swivel bearings and conductive grease (we will come at this thing from all directions, leaving no stone unturned....LOL).

Now combine this with stacking several disks in series as Groundloop has suggested to get a higher voltage (assuming we are not using wire segments), and we will have a brushless homopolar motor with high current and higher voltage to reckon with, that would hopefully be OU.

@Yucca:
If you take a look at lumens video earlier in this thread, you can see how a change in the direction of rotation will change the polarity.

Simplifying things a bit more, assuming the N/S configuration is correct.

Have 1 single magnet with a conductive coating on the outside.  Then have the swivel bearings with conductive grease connected to the axis with a load between both swivel bearings.  We may need an insulator or nonconducting material in the middle of the axis to keep the north and south pole sides of the axis from interfering with each other electrically in order for there to be a potential along the axis and the rim (I am not sure if this would be needed or not).  If this does work, then we can stack the magnets along the axis in a configuration to allow us to connect them in series to boost the voltage.

Another thing to consider in regards to the voltage, is the electrons will travel the radius of both the left and right side of the magnet.  I believe the voltage is calculated by the angular velocity, field strength, and the radius of the disk.  Since the electrons are traveling through the magnetic field at twice the radius of the disk, this should double to quadruple the voltage (I am not sure of the exact formula to calculate this and is probably unimportant at this stage, but we should keep it in mind until the time is right).

It may just be this simple.

Reason for it not working:  Since we are utilizing both sides or both poles of the magnet, then the fields on one or both sides may decide not remain stationary and decide to rotate with the magnet, thus negating the forces, then we would need to take a different approach.

It appears that when one side of the magnet is being utilized, the field on that side remains stationary.  We do not know what is happening with the field on the other pole.  Is the other side stationary also or is it moving with the magnet.

It should be easy to test for these unknowns.

Magnet not rotating = both fields are stationary

Magnet rotating with 1 field being used = the utilized field is stationary and the non utilized field is ?

Magnet rotating with both fields being used = the utilized field is ? and the other utilized field is ?

Since the electrons on the north pole side has a certain spin and the electrons on the south pole side has the opposite spins, what would this do to the spins of the electrons if both fields are forced to remain stationary when both are utilized.  Could this send off anti-gravity waves?  OK, I'm getting off-topic again. LOL

Groundloop: Interesting design. But I would not wish to put too much
current through conductive grease. These machines can pump out
massive amps at low voltage. There might be a wiper and mercury
solution.
Paul-R.