Coils for vertical axis wind generator (VAWT)
Considering the base of the generator is 40cm in diam how much space must there be between each coil and can you have more than one row of coils. Another one inside the first. The same configuration with the magnets ofcoarse.
Lastly, on these cicular magnets is there a plus and minus to give you an idea of what way round you should attatch the magnets to the bottom side of the rota.