Well, here's the deal. I've had dramatic crashes before but this was not one. I was in the house in the evening and we had nice winds at 15-20 mph things were fine until I started hearing a buzzing that sang a tune in pitch up and down. I was positive I knew what it was and thought it was a a floor broom I have resting on the solar thermal panel racks right against the house. Sounded exactly like it was spinning, it's done it before. It got louder so I went out to move it. It was obvious the noise was from the turbine.
No big drama, the trailing edge lamination(s) of the one blade had pulled apart (no blade strike of anything ) and the blade was like a reed in a harmonica, singing happy in volume and pitch with the wind but it got ugly fast. By the time I got back inside to shut it down the blade tore apart and the trailing blade (2:00) caught the debris and ripped off the trailing lamination of that blade as well. Things got a bit flung around for a very short time while I shut it down and the furling cable got into the mix a bit then as well. No overspeed, no tower crash, no fire. I think just plain stress over time finally did them in. It will be interesing to see everything up close when I get this back down and find some pieces, maybe. That may be a while but I'll report back on it then as well.
Wind is fun and very little drama in solar, I'm liking less drama all the time.
Thanks for the feed back. Dave B.