RE: Primary Coil parameters?? wire size and spacing...

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Original poster: "Stolz, Mark by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mark.Stolz-at-st-systems-dot-com>

Bill,

With the amount of power you're planning on, I would say to go with 3/8"
tubing.  You would heat up 1/4" pretty good and that's something to avoid in
the primary.  As for the spacing between turns, go with what will give you
good clearance with your tap connector.  On my new coil I'm making I too
will be using 3/8" tubing and the connector I'll be using will require me to
use a spacing of about 1/2".  Hope this helps.

Mark Stolz
Houston, TX

>Original poster: "Bill Vanyo by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><vanyo-at-echoes-dot-net>
>
>I'm reposting a previous question (no response first time around):
>
>For my first coils primary, I used 1/4" copper tubing and 1/4" spacing
>between the turns (1/2" between turn centers).  That was with three
>15/60 NST's.  For my next (second) coil, I'm adding a fourth 15/60, and
>would like to someday replace the NST's with a pole pig.  For this next
>coil then, should I use 3/8" tubing and/or 3/8" spacing between turns?
>
>         Thanks,
>         - Bill Vanyo
>