Re: MiniCoil Update

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

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

Steve,

I don't anticipate that I will break your 13" unless I do a complete
redesign of my secondary.  I think to get anything longer than what I'm
getting now, I'd have to
build a larger secondary coil.  But it is good to help someone out.  I'm
sure your minicoil found a great home.

The Captain





 > 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
 > >
 >