Glade to find this site.Im bilding a vawt, wind turbine.the alternator is a two rotor with 12 magnets on each rotor and a stator with 9 coils.The coils will have 200 windings of number 14 magnet wire.The turbine will have 3 blades ,each blade with 2880 sq inches. Im hoping for 12 volts at about 200 rpm in about a 3 to 5 mph wind. I have a pic of it in another fourm at
I didn't build the coils yet because I Broke my leg about 12 weeks ago.Not smart.
Would like some comments on the coil size / rpm