This video shows a higher efficiency VAWT that is very easy to build. Drag type VAWTs are known to be very inefficient. By collapsing the drag element as it returns thru the wind, both the speed and efficiency are increased. Also very light materials are used and this makes it easier to support the unit. The generator can be located at ground level and this makes everything much easier.
Here is a link to my second video on this subject:
• Even Better VAWT That ...
Here is a link to my third video on this subject:
• VAWT With Fabric Sails...
Here is a link to more information about VAWTs.
• VAWT
The last 3 videos on the above playlist are about VAWT scams.
Here is a link to the WIKI article on drag coefficients.
en.wikipedia.o...
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