flat vs angled primary

From:  richard hull [SMTP:rhull-at-richmond.infi-dot-net]
Sent:  Saturday, April 18, 1998 12:28 PM
To:  Tesla List
Subject:  Re: flat vs angled primary

At 07:10 AM 4/18/98 -0500, you wrote:
>From:  Mad Coiler [SMTP:tesla_coiler-at-hotmail-dot-com]
>Sent:  Friday, April 17, 1998 10:53 AM
>To:  tesla-at-pupman-dot-com
>Subject:  flat vs angled primary
>Tesla List,

>  I was wondering why the helical primary caused much more safety gap 
>firing. I thought of two possibilities. One was just because there was 
>slight corona discharge between the pri and sec coils that could be 
>placing an unwanted potential in the primary circuits. The other was 
>that the helical coil was more tightly coupled to the secondary and that 
>the secondary could then be inducing a higher current into the primary 
>circuits by mutual coupling?  
>Comments are appreciated,
>Tristan Stewart

Your were tightly coupled with the cylindrical primary and far less coupled
with the flat spiral.

Richard Hull, TCBOR