Contra-rotating Wind Turbine
thingiverse
You can add as many turbines as you like and set them to rotate in any direction you want. The included brackets are designed for 34mm pipes, but you can use zip-ties to attach the shaft to a pole. You can see it in action here: https://youtu.be/Vt0cnAEqAX4 Parts required: Turbines: 1x 8mm threaded rod 50cm+ 2x 608 bearing for every turbine 3x M3x20 screws per turbine 2x M8 lock nuts per turbine Vertical shaft barcket: 2x M8 nuts 2x M8 lock nuts 2x M8 washers 4x M3x20 screws 4x M3 nuts 4x M3 washers
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