Dia. Mag. Alternator

[Charlie_V]

I find that if the coil diameter matches close to the diameter of the magnet, you'll get the most voltage per change. Smaller wire doesn't always help either (especially for a generator) since the smaller wire size greatly increases the wire resistance. 

I looked at the magnet focusing patent, that's just a form of halbech array.

[z.monkey]

The core size is equal to the magnet diameter now, 1 inch.

This idea came about after studying axial flux alternators.  There are magnets on both sides of the coils.  A traditional alternator only has a magnet on the inside of the coils, nothing on the outside.  Then also I was curious about the diametrically magnetized magnets.  So trying to build a simple representation of the idea I simplified and miniaturized the concept and here we are.  It is relatively simple compared to either a automotive alternator or a axial flux alternator, but the same concept.  I really have never looked into a Halbeck Array, need to give it a look see...

[Charlie_V]

Halbech arrays just increase the magnetic field in one direction and suppress the field in another.  So you can make the north pole almost double in strength while reducing the south pole to almost nothing.

[giantkiller]

An addendum:
The diamagnetic configuration aligns this config with magnetic shearing, same as Bedini.
The Patent 5,929,732 has its poles opposite side of the axis instead of on the opposite sides of the diameter or cylinder.

[z.monkey]

I guess that adds some credence to my design.  LOL!

Here's is a shot right before the first cut.
I am really happy with the Bitmoore vise.
My dimensional tolerances are better than ever...