Another funny thing happened when I was watching a similar vertical axis turbine when I saw a smaller turbine and looked very familiar:
I remembered that we make one of these back in grade school to measure the wind speed for meteorology. A problem with my first prototype is it would turn clockwise or counter-clockwise. Therefore, the dynamo would turn in two directions which is not favorable. With this “Ping-Pong” balls, the wind is forced to turn it clockwise which is more preferable.