SIMPLEST HOMOPOLAR MOTOR Simple magnet car

This is a new version of homopolar motor. Is necessary that the battery with the magnets is supported on a material that conducts electricity as the tinfoil.

the polarity of the magnets is very important. I try to outline the position.

S-N battery N-S (With this configuration wheel on one side)
N-S battery S-N (With this configuration wheel on the other side)
S-N battery S-N (Do Not work)
N-S battery N-S (Do Not work)

For this experiment i have used Duracell Rechargeable battery
http://amzn.to/2mcLGHQ