I "think" the benefit of mounting PVC props this way is that you can use a flat mounting disc, and you want the gen to spin in a particular direction. Plus, maybe the blade twist protrusion is farther away from the pole?
When mounting home-made wooden blades, you can of course carve them to mount and spin any way you want.
The way I understand it, PVC can be a very fast and easy way to get a gen up in the air and spinning. But with UV weakening, and stress cracks growing, it means as soon as you get it spinning, you should start working on some long-lasting wooden blades.
In spite of the "less than optimum" curve in PVC, it may give you some useful blade length data before carving wood?
