Re: and oddity or a normality?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Rob Maas <robm-at-nikhef.nl> 

 >Hi Christopher
 >I and many others use a smaller toroid underneath the larger one. With my 6
 >inch coil I have 8 foot sparks from a 32 inch coil and NEVER have any
 >primary strikes.  If you look really closely on the enlarged photo on the
 >front page of my site http://members.iinet-dot-net.au/~pterren you will see only
 >the faintest glow from the top of the coil itself.  Contrast this with the
 >same coil without the small toroid
 >http://members.iinet-dot-net.au/~pterren/T6_windy_small.JPG and I get MOSTLY
 >primary strikes.
 >
 >Cheers
 >Peter (Tesla Downunder)

Hi Peter,

The difference in performance between the two configurations
(with/without 2nd topload) is indeed striking. Is there a
theoretical explanation available?
What happens if the smaller bottom topload is removed, and the
larger one is kept in its original position (and possibly a
small retune of the coil)?

regards,   Rob Maas