04 Mar '08 12:04>
I guess lots of you have dreamt up ideas on this. Mine involved harnessing magnetic repulsion, a lightweight wheel with magnets attached would spin in a frame. As the wheel rotates the magnets attached to it get a small push via repulsion from a similar set of magnets attached to the frame, which are angled to that they only act in replusion. Perhaps the magnets would be electro magnetic, and could be switched. The idea could be applied to a train levitating on a magnetic repulsion track, to minimise energy loss by friction. In principle, if mass, friction and wind resistance were minimised it could work, what do people think?