• The DC motor used is a Hilitand 31ZY 24V/3.500RPM permanent magnet and there are 2 links where it can be found. Please have in consideration that the total cost is reduced if you get several units instead of one at AliExpress but it is also available at higher rate at Amazon.
• The number of bearings that are needed for the device are 13 units (8x22x7) and can be found at very affordable prices at AliExpress or at Amazon for a much higher cost.
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• https://www.instructables.com/Bi-Generator-Vertical-Wind-Turbine-Device/