Re: Building the Primary Coil

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

Original poster: "teri mckenney by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mck-at-ezy-dot-net>

Hey Patrick
I just drilled my holes equally. then I bumped each support out to make the
spiral.For 4 supports draw you're inner diam. with a compass and start
you're first support on the line,the next one (at 90 degrees) will be 1/16"
off the line(for 1/4" spacing).The next,opposite the first will be 1/8" and
the last will be 3/16".Also, make the first support with one extra hole as
it will have you're first turn and you're last.I did it this way so I could
set up a jig on the drill press and drill all my supports at once without
resetting the jig for each one. I also would recommed at least 6
supports.One last note, I cut my supports wide, then drilled and recut just
above midway of my holes so the tubing will just snap into place after the
supports were glued down.
Billy

----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, October 31, 2001 4:41 AM
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
>
>
>
>
>