I found a generator, so moved on and built the tower top chassis. It's just tack welded for now. I used 2" sch40 steel pipe for the yaw bearing, but it fit too loosley over the 1.5" sch40 I plan to use for the tower. I ended up machining some plain bearing rings for a better fit. The rest of the parts were scraps or wierd pieces we had lying around. I was going to try using some kind of twin tail with one side spring loaded for furling.
I ended up going with a known design that is reliable and predictable with calculations.
TheBackShed.com - Furling
these guys have lots of info on this furling design too.
http://www.otherpower.com/