Lets make it simple for you Paul
If the ball does'nt turn...then the wheel dos'nt turn

The only rolling or turning the ball does is......Initially
its attracted (or rolls uphill towards the magnet).
Once it gets as close to the magnet as it is allowed.....it stops.....and stops for good, unless the magnet is pulled away
Then the ball rolls (falls) down to the bottom of the wheel.
Finito...end of story, wheel does not turn.

I guess the 1/2 inch ball would have to turn at least 80+ turns for one turn of the wheel, thats very fast....How is the ball going to do that, stuck up close to the magnet??

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"You will never find a real Human being - Even in a mirror." ....Mike Kremer.