Even Better VAWT That You Will Want TO Build Yourself 

Hi Jim, Greetings from Italy ! You did a very professional study and a very good realization. Please, go ahead with the development of the project and we will follow you. Alessandro

Keep up the good work, I liked the concept of self starting VAWT. Your viewers would love to see a prototype.

Another cracker Jim, well done. Keep it going. I'm addicted

Nice, I'd love to see it in action and find out it's torque and rpms in different wind speeds

Thank you for this wonderful video. My appreciation and respect to you

Brilliant. I've watched many other DIY wind turbine projects, but this by many factors is the easiest, the one that has me excited to start building and trying out. Thank you.

I love the toys you make and get to play with! You continue to blow me away with your vids. Good stuff man!

Amazing. You're right, I immediately want to build one

Amazing video, great renewable energy concept.

This is wonderful, with no jargon-science and simply illustrated, great work, keep it up Dr. Jim

Super. Thanks.

Great improvement over the previous! On the area and available power, If I were faced with a choose between doubling the radius or doubling the height, both having the same area and presumptivly the same power, I'd choose double the height because asuming the same tip speed ratio, a smaller radius spins faster in a given wind than doubling the radius with the same tip speed in the same wind.

Great for underdevelopment countries and wilderness places. I plan making one to wash clothes. In WWII the young soldiers in Kwajalein built a wind turbine to wash their clothes.

Keep up the great work! Very interesting!

Fascinating idea!

Thanks am new subscriber am looking to make a wind wall / fence across my front yard I love this idea will be easy to get fabric from used clothing from thrift shop and 0ld oil buckets for disc . Lots of small turbines with colorful sails each turning a small generator.

Greetings from Turkey, you are very professional, congratulations. Please keep improving this project and try how many w of energy we can generate with Alternator

That mesh between concepts you've melded there is very neat indeed.

Great Video! nice work. I will be making one of these

So awesome

Please make a video on Archimedes wind turbine, how to make at bome

Jim pls show step by step in detail, how do we fix the centre rod, do we use a bearing

Mis felicitaciones. Eres realmente un genio

Thank you very much indeed. Everthing is clear as sky. What would be if the number of sails are decreased or increased? How important is a width of the sail? A relation of the sail sides, how longer should be longer side? How about combination of drag type with lift type VAWT? They say that the drag type is efficent at a lower wind velocity and the lift type efficient at higher velocity? Are these upper and lower discs are mandatory or could they be replaced by plastic or metal bars from the center? Thank you again.

I watched your first video in the series earlier today, then found this one. Appreciate your experimentation and videos thereof - thanks for sharing!

Very inspiring video and I am eager to see the your following vawt. Just a quick question: what is the ratio of the long and short sides of the trapezoid sails?

Hi , Can you tell me have you tested any of these designs with load? It is because I have heard that lift type are best VAWT and especially helical design that self starts.

Genial (spanish), wonderful (english), macanudo ( bolivian spanish)

Awesome concept! I have a question for Jim: would it help to design it with an odd number of sails so that the windward sails don't block the wind from the leeward sails? What ratio of leading edge to trailing edge length did you use for this prototype?

Hello Can i ask how can i get the mounting height of the VAWT using wind speed of the specific location?.

This is amazing. I can't wait for part 3. I do want to build one myself.

How is it with the Coanda effects? Its always right to simpliphy if it is better! Now I just don't see it! The Sail take more stress, and the better speed, I did not see it! What I see is less torque in same speed! Its not a bad idea just not better!

👍🙂

So P= AV^3 /2.

drum cylinder, no sails, flaps, no cups, just flat bending flexible wings-blades, its like a drum-cylinder with long wires, wrapped around the drum, like coils, but flat sheet blades, simplest ever, just the attachment point to the cylinder-drum

Very clumsy design with cloth flying around