RE: Building the Primary Coil

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

Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Gary.Lau-at-compaq-dot-com>

Assume your turns are spaced 0.50" center-center, and that you have 4
supports (six or more is typical, but assume 4 for this exercise).  Also
assume that the innermost turn is 3" from the center of the circle.

Each support must be 0.50" / 4 = .125" more distant from the center than
the previous one.  So the first turn of each of the supports are located
at:
Support		Radius
#1		3.00"
#2		3.125"
#3		3.25"
#4		3.375"

Gary Lau
MA, USA

 -----Original Message-----
From: 	Tesla list [mailto:tesla-at-pupman-dot-com] 
Sent:	Wednesday, October 31, 2001 7:42 AM
To:	tesla-at-pupman-dot-com
Subject:	Re: Building the Primary Coil

Original poster: "Patrick Bloofon by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <transactoid-at-home-dot-com>

My question was more meant to address the issue of how people make their
spacings on whatever they use to space the turns. I'm really bad with
"visualizing" construction plans. If you have say, 4 supports, you don't
just drill equally aligned holes up the supports do you? In order for it
to
spiral, won't each supports' holes have to be offset from the previous
one???

Sorry if this is a really simple question. I just cannot picture this in
my
head....

Thanks,
Patrick.

>
> Since a picture is worth a thousand words, I'll spare you the
bandwidth.
> Just go to the Tesla Coil Web Ring:
> http://nav.webring.yahoo-dot-com/hub?ring=TeslaRing&list
> and look at how everyone else does it.  Mine is illustrated at:
> http://people.ne.mediaone-dot-net/lau/tesla/primary.htm
>
> The spacing between turns is not at all critical.  The only
> consideration is that whatever method you use to make the "tap"
> connection should not short to the next turn.  Using too wide a
spacing
> will lower the coupling and require more turns and tubing for the same
> inductance.  Most of us use about a 1/4" space between turns. (1/2"
> center-center w/ .25" tubing)
>
> Regards, Gary Lau
> MA, USA