Re: New guy questions (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 19 Jul 2007 11:26:39 -0400
From: futuret@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: New guy questions (fwd)




 1) How critical is the Secondary HD ratio?  I found some guidance, but
I
> also see some folks seem to ditch the convention - for example,
maintaining
> an HD of 4 to 4.5 for a 4" coil form. 


Dan,? 

The ratio is not very critical.? But keep it within the normal range for best results.
For example for a 15/30 NST, I like to use a 4" secondary that is 19" to 23" tall, 
wound with 28awg magnet? wire. 
I top the coil with a 4" x 13" spun aluminum toroid, and I use a sync 120 bps
rotary spark gap.

?http://hometown.aol.com/futuret/page3.html

John






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