Pretty good idea, I worked
Pretty good idea, I worked on that few years ago. A levitating non friction windmill that uses the rare earth magnets to “float” above it’s base. The problem I had then was the position of the blades (vertical), I couldn’t find a proper mechanical solution to “close” the blades that where spinning back towards the wind (and reduce drag). With the pic it should be doable (didn’t know them at that time).
Something like the above, since the wind hits the mill from 1 side (and thus pushing the blades backward, left side in the picture) the other side will rotate towards the wind producing drag. Not very efficient.
Another problem was the electro motor, it has to be build pretty exact to produce enough power but still would be spinable. Best would be a brushless motor but it's quite a challenge to get that to put out power efficiently.
Maybe a combination, a wind powered robot......
1 reply
So far
Out of a gazillion parts I used these for now
And then stacked together it looks something like this
Only harddisk parts so far.
Little tip
Remember kids, the older the better. I found more parts in the prehistoric beasts up to 1GB then in the newer ones. 1 one of them even used a proper steppenmotor to move the “read-heads” over the disks. Freak knows from what era that was.
I expect them any day now 
I expect them any day now Got 2 types of belts from http://www.technobotsonline.com/wheels-and-propellers/tracks.html for a couple of euro’s.
