After seeing this video, I have decided to make a homemade version of this machine. The axle and other parts can be taken care easily, but I want to know what kind of material is being used to make the blades of this turbine. These part is the most important part while making the turbine.
Blades in Photo 6 and Fig 7 can be mismatched as pairs and the boat rowed straight (video 1) indicating some parity with variations at startup, braking, and with/without flow induced vibration (FIV). Fig 2 and 16 show likely blade travel (based on repeat observations). On entry FIV blade is a...