Originally Posted by
mophead
So, if you have one of the contraptions you built, laserman.......
Once you give it a twist--how long does it turn?
i used skateboard bearings with exact machining on all parts all other materials were non conductive and precision laser cut from plexiglas . There were 3 levels of 18 ND magnets around the perimeter which provided excellent centrifugal force, i only ever spun it up by hand and it would spin for less than about 40 seconds. Friction is your basic problem in these designs.
I will try to attach a top view, but it was three levels with each rotor staggered by the right amount. Oh well i cant attach a word doc but if anyone wants the design, I will email a corel x13 version if you want it. Or if someone can tell me how to attach the drawing i will.
Pat B
laserman532 on ebay
Been there, done that, got the t-shirt & selling it in a garage sale.