Our speed bearings just showed up so I had to whip together a quick proof of concept with parts lying around the house. I just realised that I have an old oscillating fan lying around and its blades have already been cannibalized for the next test. Parts: 6 Neodymium magnets Motor/generator wire Cardboard tray from a case of bottled water 2 pencils 3 pens duct type Scissors multimeter 20″ at an estimated at 7-12mph