Luc,
have a look at how high Aviso shoots this about 1 Kg coil:

http://www.youtube.com/watch?v=vO6KlwVGOgI

Okay, he probably uses much higher cap voltages, but he surely also
has the chopping and shortcircuiting of the coil to generate more BackEMF to
help create bigger repelling forces...

Regards, Stefan.

Okay, once again:

lift-Energy= m x g x h= 0.3 Kg x 9.81 x 0.02 Meter= 0.05886 Wattseconds

Energy stored in the cap= 0.5 x 0.0047 Farads x (25.9 Volts)^2= 1.5764035 Wattseconds

0.05886 Wattseconds / 1.5764035 Wattseconds = about 0.037
so it is about 3.7 % efficient in the lifting mode if the cap was fully discharged,
if I did not miscalculate some units...

Luc,
was the bigger coil placed as a weight ontop shortcircuited or open circuit ?
This could affect very much your magnetic repulsion !

Stefan,
It looks to me like the extra weight is just a construction of cardboard and tape loaded up with batteries (or something). I really think the easier test for OU would be to find a lower voltage DC motor to mount his flywheel onto and then simply replace the AA battery/ies he's using with the leads from the motor and see if it keeps running (which he's aware of, but is in South Africa doing volunteer work so such a motor/generator is difficult to find).  Considering he's consistently achieved higher output by simply adding more permanent magnets, this seems like one of the more promising setups I've seen here.

Cheers and good hunting,
Polln8r.

Quote from: hartiberlin on April 14, 2012, 09:51:36 PM
Luc,
was the bigger coil placed as a weight ontop shortcircuited or open circuit ?
This could affect very much your magnetic repulsion !

The bigger coil was open. It had nothing to do with the effect, just happen to be a good weight to use.

As for the Math you show, that is beyond my capabilities. If you would say you need a 1uf cap charged at 1000v needs to lift 100 grams to be OU then I can work with that.
I do have a 1uf microwave oven cap and transformer. EDITED The coil I have weighs 115 grams, so tell me at what voltage the 1uf cap needs to be to lift 115 grams  so it is OU (no Math) if you want me to try again.

Luc