Space them maybe a fifth of their length apart as you go around the circumference (1 unit gap, 2 units north pole, 1 unit effective gap in the middle of the magnet, two units south pole). You'll have more poles for a given radius - which is GOOD. Rasies your frequency and the voltage (because the effective risetime of the field is shorter), lowers your cutin speed. The polarity of the magnets comes out right for a dual-rotor if you position them so the bodies of the magnets are opposite each other.
Expand your radius and use still more magnets for more power, or to let you use more and thinner coils so the gap can be reduced and the field strength increased.[ Parent ]
