Re: coupling

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Jonathon,

If it's a flat primary, you could simply add a couple turns to the inside
diameter
in the helical direction to increase coupling if you don't want to modify the
construction to allow the primary to be raised and/or the secondary to be
lowered.
It's difficult to know if you have less than optimal coupling until you
actually
test the coil.

Take care,
Bart

Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Kidd6488-at-aol-dot-com>
>
> In a message dated 4/9/02 3:56:06 AM Eastern Daylight Time, tesla-at-pupman-dot-com
> writes:
>
> >
> > > I think I have poor coupling.
> > >
> > > I have 1/4 inch copper tubing primary.  3/4" inside to inside spacing so
> > > 1" center to center.
> > > and 2" between innermost turn and primary.
> > > What do some of yall run?
>
> Hello everyone, I think my coupling is bad too,
>
> 6" sec.
> .25" Cu Pipe .25" between turns
> 2" between the pri & sec coils.
> My secondary is level with the primary coil, and it can only go up.
>
> Is there anything else I can do to increase the coupling?
> ---------------------------------------
> Jonathon Reinhart
> hot-streamer-dot-com/jonathon