The turbine itself is a set of those composit blades. Six blades,
five foot diameter.
The alternator started as a GM truck unit, I believe orignally
120 amp. I installed a big Neo ring instead of the wound rotor,
and rewound the stator. If memory serves, 19 wraps of #16 per coil.
That's all I could fit in. At a measured 300 r.p.m. it puts out 35.5
volts, open circuit. At the moment it is hooked up to four D8D
batteries--at 24 volts. I have seen surges to 50 amps on really
windy days--like yesterday. At the moment there is no furling mechanism
although when the snow goes I'd like to change that. In really big
winds, it's a bit frightening.
bj