Re: Using guts from BTC-3

Subject:  Re: Using guts from BTC-3
  Date:   Mon, 28 Apr 1997 08:24:05 -0500
  From:   David Huffman <huffman-at-FNAL.GOV>
    To:   Tesla List <tesla-at-pupman-dot-com>

Here is what I have. A small coil 2-7/8" dia secondary ~13" long topped
with a 4"X15" dryer vent toroid, primary is 30deg spiral made with #10
ground bus wire as you mention below, about 15 turns. I get somewhere
around 20" streamers with a 12KV 60mA neon and 5 static gaps.
The primary caps are not the best for TC, they are barium hockey pucks
from a laser supply.
Where on the performance chart does it go?
> In a message dated 97-04-25 03:21:52 EDT, you write:
> << 
>  Do you think it is possible to get good results with this
>  small system if I use the bare copper wire that is sold
>  for ground connections to circuit breaker boxes?
>  I know it is not tubing and that its surface area is smaller
>  and a waste that it is solid, but it seems to me that I can
>  have a much physically smaller primary.
>  One recourse: I can use the copper tubing and just have say
>  4 turns, make my primary first, and wind the secondary to
>  be within tuning range.
>  Thanks,
>  Bob Schumann
>   >>
> Bob,
> On my latest 3" coil, I use a flat primary made with solid # 10 copper
> wire,
> inclined at about 15 degrees.  Performance is not bad.
> Ed Sonderman