Re: Smooth toroid

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 11/18/01 9:48:04 PM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:

I wrote some postings about this in the past.  Generally, a
rough toroid may need to be up to 50% larger to obtain the
same spark length and the same number of streamers, as
compared to a smooth one.  The sparks will move and
drift about over the surface of a smooth toroid.  They will
tend to stay rooted at one position on a rough toroid.

Cheers,
John
--

> Hello Coilers,
>  
>  Has anyone on the list done actual measurements or analysis of
>  smooth versus "rough" surfaced toroids?  I spent about an hour
>  earlier today applying thin aluminum foil tape over my dryer
>  duct toroids and I was amazed at the effect that it had on the 
>  number and size of the streamers.   I am now getting fewer but
>  much longer simultaneous streamers than I did with the original
>  "rough" toroids.