The turbine blades are set to operate under a variety of wind speeds. It is true that they will pass a lot of wind at 5 mph apparent wind speed. It is also true that as the wind speed increases the blade speed also increases to the point that each section of the outer 1/3 of the blade length will be ever closer to the turbulent air coming off of the previous blade. Clean air flow is assured by the spacing provided by the 3 blade design. The tip speed is way higher than the air speed. Aermotor style mills with 20 plus blades were very poor designs and each blade blocked the wind from following blades when wind was even 5 mph. It took me a month of thinking to wrap my head around the idea. If a person could see a 12" balloon float into a large windmill, they would see that it would be unlikely that the blades would missed the balloon in the outer 1/3 of the blade length. Toward the middle, not so much. But 80% of the power is generated in that outer area. Jim
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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