Re: Secondary Question

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Rich,

I've been keeping up with you and Gerry on this coil. It's kind of 
interesting to see what choice a coiler makes (as per Gerry's options 
- which were perfectly presented and correct). I'm kind of curious as 
to your red wire. Is it stranded wire? If so, I would probably make 
the same choice of using magnet wire. On large forms say 10-12 inch 
diameter, I prefer 18 awg.

If by chance your red wire is a single solid conductor, then there 
would be nothing wrong with 1000 turn coil on a 9" x 50" form for a 
5.56:1 h/d ratio, assuming the overall diameter is 0.05". Turns are 
decent as is the h/d ratio.

Take care,
Bart

Tesla list wrote:

> Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>
>
> Well due to the fact that the cover on the silver plated wire is bright
> red I thought a "red monster" would be nice for a start but I never
> expected it to be as good as the southern "green monster" of this list.
> With lack of power for going bigger I think I might leave my 9" mailing
> tube on the shelf and go with magnet wire and 6" PVC. With PVC it will
> be easier to build in an adjustable height mount so the distance from
> the primary to secondary can be controlled. I have already sold my big
> Maxwell (.150mF 100Kv) to the man with the green monster and don't think
> I want to get into a pole pig at this time. I might find some one who
> needs the red wire. I have enough magnet wire for 6" PVC.
>
> Rich
>
> Subject: Re: Secondary Question
>
> Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi Rich,
>
> Most people use magnet wire for their secondaries and choose the
> gauge give the desired number of turns within the allocated
> space.  Since you already have your wire and if you want to use it,
> you will have to decide what to compromise.  Some choices are:
>
> a) increase the diameter to 14 inches (probably too big for your power
> level
> b) use less than 1400 turns to fit what ever height you decide upon
> (probably between 45 and 70 inches)
> c) go with a non standard aspect ratio 9x70 (increase the impedance
> of your resonator)
> d) choose an appropriate gauged magnet wire.
>
> Almost anything will work.  Barring choice d), I would probably use
> choice b) and a 54 inch wiring height.  This would give you 1080
> turns.  Please keep in mind that being exact on a 4.5:1 aspect ratio
> and 1400 turns is not that critical.  Things will perform well over a
> broad range.
>
> Gerry R.
>
> >Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>
> >
> >Subject: RE: Secondary Question
> >
> >Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>
> >
> >Thank you for the reply Gerry and Scot, now I am going slow with this
> >because I read where the Cp for my transformer was 30nf and I thought I
> >should make it 30 , now you say 49nf. I planed on a order of 52 caps ,
> I
> >can get a few more and run 4 strings and get close to 49.
> >Wire , yes I have a large wooden spool of the silver plated stranded
> >wire. With 1400 turns per you note and my wire .05 with insulation that
> >gives me 9"dis x 70" tall. Won't that get out of the normal
> proportions?