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Three-phase close-up

(Click to enlarge photo)

Close-up of the previous machine. Note that there is no tail-fin to bring the machine into wind. This was one economy too far and, although it moved into the wind, it was never in quite the correct alignment to get the best power output. I believe this is caused by the angle of the blade presented to the wind being different at the top than the bottom, combined with moving slightly with the wind and against it in each case. The wire at the bottom right is an earth cable for lightening conduction, just in case!.