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Build a cheap VAWT from a broomstick, 4 bearings, 2 buckets and some pipe.
Go get at least 2, or ideally 4 ball bearings with a 25mm (1inch) inner diameter, and a 50mm (2 inch) outer diameter. I bought mine for aout ...
Cut the PVC tube to be slightly shorter than the room handle, and then cut if in half again. Tap 2 bearings to be close to the center ...
Cut both buckets in half so you have 4 blades. It pays to have the dog check your work ;) I used an electric saw and just held ...
Screw on half to the top of the shaft. Add some screws down the side - by using thread on the screw you can the leave a gap ...
Add another blade
Add the other 2 blades below, at 90 degrees to the first two. This gives a much smoother running, and a better chance of the blades facing the ...
You now have a nice lightweight turbine to bolt to something heavy. Unfortunately I had little wind for one of the videos - the unit goes great above ...
I'll add a generator set soon. There's plenty on my workbench.With the following assumptions:m(air) = 1.2 kilos per cubic meterarea(frontal) = 0.7 square meterswindspeed = 5 meters per ...
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