Re: MiniCoil Update

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

Original poster: "Steven Ward by way of Terry Fritz <teslalist-at-qwest-dot-net>" <srward16-at-hotmail-dot-com>

Hey Dan,

sounds good.  And if you beat me, there is no way for me to out do you.  I 
sold my mini coil to that college student who needed one in New York.  I 
wasnt thrilled to sell it or anything, but i did need the money, and she 
did need a coil, fast.  MAybe someday i will find another 4/20 france NST, 
but im kind of doubting it.  But good luck in any case.  Also, it should be 
noted that when using a cap the size of yours, my sparks were much shorter 
than they could have been.  I found that a little smaller (.019uf) was much 
better than larger sizes that would suggest to be resonant.  I have a 
feeling that maybe the NST gets too loaded down by a large cap.  And like 
you said, the break rate got really low.  So maybe try an inbetween sized 
cap ;)

Steve Ward.






>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: MiniCoil Update
>Date: Sat, 15 Mar 2003 12:39:44 -0700
>
>Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" 
><dhmccauley-at-spacecatlighting-dot-com>
>
>Well, finally had the time to modify my minicoil.
>I basically changed my tank capacitance from 0.0112 to 0.0224uF which is
>much closer the resonant size for the 4kV/38mA (modified 4020SE tranformer)
>and also increased
>my toroid size a bit using an aluminum covered packaging crate isolator
>(which is what Gary Laus is using as well)  The final output now does 12+
>inches for output streamers with no
>problem so that should put me close to what Steve Ward is getting on his
>coil in the contest.  I still have some racing sparks on the secondary but
>am able to reduce them considerably by slightly retuning my primary.  Also,
>the bang rate is considerably reduced and the bang size is increased
>dramatically.  Kept spark gap spacing at 0.050" but may reduce it a bit to
>increase bang rate a bit.
>
>Anyone else still building or modifying their 4kV minicoils????
>
>The Captain
>


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