Re: helix vs. flat-spiral primary

• To: tesla-at-pupman-dot-com
• Subject: Re: helix vs. flat-spiral primary
• From: "Dan Kline" <ntesla-at-ntesla.csd.sc.edu> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 15 Mar 2000 20:18:26 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

At 05:26 PM 3/14/00 -0700, you wrote:
>Original Poster: Parpp807-at-aol-dot-com 
>
>Hi Dan,
>I'm not too good with chinese drums but I am going to try the flat spiral 
>mounted
>perpendicular to the secondary. With a 3.25 inch diam secondary, I'll start 
>with a spiral-
>first turn diameter of 6 inches. Experience with the helix says much closer 
>is too tight. What do you think of a tunable 14-turn coil made with 3/16 Cu 
>tubing and spaced to 0.75 inches?
>
>Cheers,
>Ralph Zekelman

I don't think I'd space the turns at .75 inches. Maybe 7/16" center to center?
Otherwise, sounds great to me. :)
I'm no expert though, which is why I wondering about helix vs. flat spiral
in the first place :)

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