Re: Wire size for 8.5" coil

To: tesla-at-pupman-dot-com
Subject: Re: Wire size for 8.5" coil
From: Michael Tucknott <Michael.Tucknott-at-virgin-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Fri, 19 Feb 1999 15:04:09 -0700
Approved: twf-at-verinet-dot-com

Tesla List wrote:
> 
> Original Poster: "Coiler" <mycroft-at-access1-dot-net>
> 
> I'm looking for a second opinion, comments, and general kibbitzing of
> the wire for my planned 8" coil.
> I can either wind with 21AWG, or 20AWG (looks like mouser has spools
> of both that will allow continuous winds for what I plan) The question is:
> Which is better?
> Proposed specs for
> 21AWG:
> 34" winding (appox 1150 turns, 2500ft wire)
> Cap: 0.03
> Topload: 6x32
> Primary: 10.5 ID, 1/4 spacing, 1/4 tubing, tapped around 14 turns
> Computed frequency, loaded: ~90Khz
> 
> For
> 20AWG:
> 34" winding( approx 1000 turns, 2200ft wire)
> Cap: 0.03
> Topload 6x32
> Primary: 10.5 ID, 1/4 spacing, 1/4 tubing, tapped around 12 turns
> Computed frequency, loaded: ~101Khz
> 
> All parameters are up for tweaking: Suggestions beyond wire type welcome.
> 
> Note: My power source is a 14.4KV 5KVA pig, ballasted by a Lincon stick
> welder.
> I've used it to run my 6" coil out to about 55" arcs (more possible, if I
> up my cap I am sure, as well as move outside. Current cap is only 0.015)
> Former will be green 8.5" OD PVC Sewer pipe, treated with polyurethane
> in the normal fashion.
> 
> The wire I am thinking of using is the NYSOL 130C, with the nylon overcoat
> [or kapton.. I suspect the latter, it does say polyimide in the catalog]
> 
> Michael Baumann
> Coiler, Homebrewer, Nerd. mycroft-at-access1-dot-net
Hi Michael
Me and my mate Brian are building a new coil(9.25")powered by a 15KvA
pole pig, with the post we got your wire size may be on the small side.
We were thinking of usuing 16 or 17AWG which would give 42" wind hight
but still with a H/D ratio of 5:1.

Cheers Mike Tucknott    
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