On Tue, 29 Aug 2006, Terry Blanton wrote: > A mumetal shield is arranged with a camming device such that when the > disk is rotated by hand, the attractive force of the magnets adds > momentum to the disk. When the rotor magnet is nearest the stator > magnet, the cam drops the shield between the magnets sending the disk > over the "sticky point". The cam then lifts the shield and the next > magnet approaches.
If so, then perhaps the conductive parts create a large inductive drag, which keeps things from spinning fast. If the effect is genuine, then plastic parts and nonconductor supermagnets (composite "rubber" supermagnets) might make a big difference. (((((((((((((((((( ( ( ( ( (O) ) ) ) ) ))))))))))))))))))) William J. Beaty SCIENCE HOBBYIST website billb at amasci com http://amasci.com EE/programmer/sci-exhibits amateur science, hobby projects, sci fair Seattle, WA 425-222-5066 unusual phenomena, tesla coils, weird sci
