On the picture, you can see the turbine that I already made using the 200mm PVC tube. The most challenging part though, was to properly calculate the form of the wing.  For this purpose I used an Excel table(thats how i created the optimal form of the wing). Soon, I will update this page and upload the results. 

As you can see, here is the final project. Now, Im just waiting until the windy season is going to come and the generator will start working on the maximum power.