In reply to David Roberson's message of Sun, 14 Apr 2013 01:29:19 -0400 (EDT): Hi, [snip] >Has anyone figured out a theory as to where the energy comes from to drive the >motor? Are the magnets depleted with time?
I think you can get a measure of the maximum energy stored in the magnets by multiplying the MGO of the magnet by its volume. Even for very strong magnets, it's a pretty small number. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html