Here’s a design of a Savonius vertical axis wind turbine developed by a group of people and posted on Instructables under the username lisa-torstenson. Their goal was to create a wind turbine that would be stable and resilient. Almost all of their materials were recycled or reused.
Since the goal was to utilize recycled materials, they gathered almost everything from the physics shop at their school. The exceptions were two 3D printed caps/lugs and the bits of sheet metal used for the rotor blades. 48 Volt Wind Turbine
Using a sheet metal roller, they curved their blades. You should do the same.
Use the miter saw to cut the PVC pipe (it has to match the length of any blade).
For all drilling, they used a drill press for maximum precision.
According to the diagram that you can find attached to the original post mark the locations of the holes.
In order to connect the PVC pipe to the axle rod tightly, they needed to print two plug-like pieces. The pieces fit like a cap on the top and the bottom of the pipe and had holes for the axle rod.
Screw the trapezoidal support beam to both the stand and the base.
Attach the wires from the generator to an LED bulb.
The design can be significantly improved. It can be made lighter, more stable and with less moving parts.
Additionally, they could change the design so they would not need to use the 3D printer since it is a rare and expensive technology. Finally, they would like to store the electricity in a battery, instead of powering the bulb immediately.
[all pictures (c) lisa-torstenson/Instructables/CC BY-NC-SA]
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