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A couple of updates:
1. I believe I read recently that we have over 2,000 in Indiana now. I drove through our cach of them near Fowler today and I bet there are 1,000 just around there. On my recent vacation trip out west I did not see any developments on the scale of the one we have up there though I did see some largish ones.
2. On Friday the lovely Mrs. and I went out to eat and while coming back saw in the parking lot of a local mostly vacant strip center a windmill blade on a pair of stands that apparently was damaged in a highway accident.
The last 8' or so on the small end has one side sheared off. I asked the mrs. to go back so I could look at it up close. (we were in her PT). The surface is composite with a fairly thick layer of plywood just under the surface. It is all amazingly flexible especially with one side sheared off.
It stands nearly 12' tall (standing on edge) and looks to be 136' long based on how many 10' squares of the concrete parking lot it takes up. The end that fastens into the hub has what looks to be an access that will allow a man to crawl inside the blade. There are about 70 threaded about 19mm bolt holes in the hub which bolts to the hub.
Most impressive and interesting.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]
..I also have a 427 Cobra replica with an aluminum chassis.
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