David Hamel three cones device, solution may already been out there!

[bs2012]

I believe 3 vital points need to meet in order to replicate the device:

1. the presence of a shell.  A metal tube. would be perfect.  It must fit the magnet field range that when the cones wobble,  there is magnetic field change in the shell and electricity could be generated
2. the cones, similar to the shell, must be of metal and within the range of magnetic fields
3. the cones should be floating within the outer rings.  That means when magnetic field change as electricity passed by, the cones would lost it's balance to 'move'

Hamel's device is a combination of mechanic and electromagneticism device.  The initial wobble is just a start up and it won't last long.  Subsequent wobble should be caused by and after sufficient accumulation of electromagnetic power.

Would like to check if somebody has already made similar research / experiments before.  Pls share your experience.