Re: Stumped at first light

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Esondrmn-at-aol-dot-com>

In a message dated 11/26/02 8:04:37 AM Pacific Standard Time, 
tesla-at-pupman-dot-com writes:


>    My class has built most of our coil and I am a little sceptical about
>our capacitance calculations. We would very much like to fire it up, but I
>think it needs a little fine tuning. Here is what we built: feed-12000v NST
>-at- 30ma, adjustable spark gap built out of copper tubing, The primary is 6
>turns of 1/4" copper tubing with a 3/4" gap between turns, the secondary is
>1000 turns of 22 ga. magnet wire on 4" pvc with a heighth of 26 5/8". We
>have an 8" gazing ball or 4" aluminum flex duct for a topload. We built a
>strike rail around the primary out of  #2 bare copper. Will this work, and
>what kind of capacitors do we need. Any help would be greatly appreciated.
>Thanks.


To the mystery coiler:

Making a few assumptions:  with a 10 pf top load, your coil should tune 
about turn 6 with a .023 ufd cap.  At turn 5 with a .035 ufd cap.

Ed Sonderman