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Build your own Savonius VAWT (Vertical Axis Wind Turbine)

Step 5Add another blade

Add another blade

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3 comments

Sep 14, 2009. 12:30 PMboricua17 says:

how long does the screws has to be for the side....

Sep 14, 2009. 2:16 PMsam D (author) says:

75mm (three inches) is a good size. take care.

Apr 15, 2009. 7:23 PMnickjohnson says:

I thought the whole point of the overlap between the two halves was that air would flow from one cup to the other. With that pvc pipe in the middle, you can't get any air flow.

Apr 17, 2009. 4:03 AMsam D (author) says:

Hmm, not easy to see from the photos I'll admit - but there IS about a 50mm standoff on each due to not screwing the screws all the way in. Study the photos and read the text and you'll get it. You can make the gaps as large or small as you want by adjusting how far you plunge the screws in to the central mast. Let me know if its still confusing and I'll email you photos. SD