The file 'The Differential Wind Turbine 3D Printer Model' is (stl) file type, size is 337.5KB.
You can find a video about this here https://youtu.be/3kQlfvukR0c
the differential you use is up to you but I have mad quite a few including https://www.thingiverse.com/thing:6808868 or https://www.thingiverse.com/thing:6803679 or https://www.thingiverse.com/thing:6747572 or https://www.thingiverse.com/thing:6744011
The last two would need a bit more working through but any will do
Blades_x_6.stl | 77.5KB | |
Clips_x_10.stl | 13.9KB | |
Connection_Plate_x_2.stl | 87.8KB | |
Hub_x_2.stl | 573.7KB | |
Long_Output_Axle.stl | 94.2KB | |
Pins_x_10.stl | 53.8KB |