Re: nice coil pics

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

Original poster: "Steven Ward by way of Terry Fritz <teslalist-at-qwest-dot-net>" <srward16-at-hotmail-dot-com>

Hi Terry,

The primary coils do connect at the center of each winding, and are wound 
in opposite direction.  Let me clarify.  The conductor is being spiraled in 
the same direction throughout the coil, but at the middle it begins moving 
outward instead of inward.  Tricky to explain, but i think you can get the 
idea.  I did this because my primary was too small when i finished the 
coil.  So this was an easy alternative.  Also, i did try off axis tuning, 
and it did not work nearly as good!  It put out maybe 36" when tuned with 
the off axis coil, but up to 45" with the extra coil actually coupled 
(somewhat).
It worked out nicely.  I dont have any pics of the second primary coil though.

Steve Ward.






>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: nice coil pics
>Date: Sat, 12 Apr 2003 16:55:26 -0600
>
>Original poster: "Terry Blake by way of Terry Fritz <teslalist-at-qwest-dot-net>" 
><tb3-at-att-dot-net>
>
>Hi Steve,
>
>Nice coil.  Can you tell us more about your dual primary?  Do they connect
>at the center and spiral out in opposite directions or are they wound the
>same way and connect outside to inside?  Or something else.
>
>Terry Blake
>Coiling in Chicago
>http://www.tb3-dot-com/
>
>
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Saturday, April 12, 2003 1:17 PM
>Subject: nice coil pics
>
>
> > Original poster: "Steven Ward by way of Terry Fritz <teslalist-at-qwest-dot-net>"
><srward16-at-hotmail-dot-com>
> >
> > Hi All,
> >
> > I put some photos on my site of a coil i built recently.  It uses a singe
> > 15/60 NST and makes 45" sparks.  That is without a rotary gap!  The pics
> > can be found on the Medium coil link found here:
> >
> > http://hot-streamer-dot-com/srward16/
> >
> > This was a well behaved coil and worked awesome.  I did have trouble with
> > it pulling lots of current before i added the PFC (dropped from 15a to
> > 9a!).  I may have lost a little bit of performance from this as well, but
> > the arc lenght still met what i had before.
> >
> > Enjoy!
> >
> > Steve Ward.
> >
> > PS, if anyone is interested, i will be building and selling a coil
> > identical to this one sometime in the future.
> >
> >
>


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