@Neo-X
Actually, you seem like you have the ideas down OK.
You need to do the diagram better to show the brushes
and what is electrically conductive and what isn't.
Like Broli says you probably are going to want to build
it yourself to learn what you are doing wrong.
You are worrying too much about eddy currents in the motor
because the disks should have slots in them. As shown in this
link;
http://www.evilmadscientist.com/article.php/HomopolarExploratoriumThe main shaft can't be one solid piece, if the generator and motor
are going to spin at different RPM's. There will need to be a bearing
and brush inside the the inner diameter of the motor disk.
The mechanical torque times RPM is going to have to be matched to
the electrical characteristics of voltage times current in the motor and
generator. Because the electrical energy (power) can only be changed
slightly. The mechanical power based in the gearing ratio is going to
have to be adjusted to the most efficient RPM operating point after
construction. You currently show it set to about 1 to 81 and I don't
think that is justifiable but I think the numerical ratio is critical.
(Electrical power == Mechanical Power) (+ any overunity power)
In a homopolar device a gearset can be substituted for brushes so
it may make sense to let the negative current flow though the gear
set if the homopolar motor can be fed from the edge?
To get overunity you need to count on a) less backforce in the
generator and b) magnetic field strength increases based in flowing
current. In both the motor and generator case I think it makes sense
to have the magnet disks spin with the rotors.
Good luck...Be sure to watch Bruce's Homopolar Experiment thread.
:S:MarkSCoffman