Re: 12 inch coil

["Barton B. Anderson" <tesla123-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Hi Mike, 

Tesla list wrote: 
>
> Original poster: Hollmike-at-aol-dot-com 
>
> Using 16g wire, you'll get almost 1400 turns using the full 72 inch length. 
> 14g will be closer to 1000 turns. 
> Mike


Well, I would recommend (between the two sizes) the 18awg (and maybe smaller).
The 14awg will have higher losses and the primary circuit will also have higher
losses. Personally, I would look at somewhere between 15 and 20 turns on the
primary with your cap size, then decide on the secondary wire size. At least
this way, you cut the primary gap losses (the greatest contributor) down and
the secondary can simply follow in wire size and turns for the highest Q
possible taking into account the power applied. 

Bart 

>
>   
> > Original poster: "D.Wightman" <dwightman-at-mmcable-dot-com> 
> > 
> >  Hello everyone.. Recieved my 12 inch by 72 inch long secondary form. It is
>
> > made 
> >  of acrylic and cost 185 US dollars.. Here is the main question,, What 
> guage 
> > of 
> >  magnet wire should I use and how many turns. The power tranny is a 
> >  14400vac,,5kva pig..the caps are maxwell...i have heard that a ratio of 
> 4.5 
> > to 
> >  1 would be good,, And 18 guage wire...My last coil was 8 inches in 
> diameter 
> > and 
> >  wound with 888 turns of number 22 magnet wire,, it performed very well, 
> with 
> >  suprisingly few primary strikes..With number 18 wire at 4.5 to 1,, I will 
> > get 
> >  well over 1000 turns??..Do you think maybe I should go with number 16 
> >  wire...Who on the list has experience with a 12 inch coil??. also maybe i 
> am 
> >  sort of getting gun shy here since i was so pleased with the performance 
> of 
> > my 
> >  8 inch coil that im stuck on the pretence that a coil should never go over
>
> > 1000 
> >  turns,,,hmmmm..Thanks 
> > 
> >