Re: help my coil, please

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

Original poster: "Dr. Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>



Racing sparks are usually caused by (1) improper tuning and (2)
overcoupling.

Explore these two areas in detail and you will probably find your problem.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, April 25, 2003 10:36 PM
Subject: Re: help my coil, please


 > Original poster: "Chris Roberts by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <quezacotl_14000000000000-at-yahoo-dot-com>
 >
 > What is your gap spacing? I used to have the same problem with the racing
 > sparks. Try reducing your gap spacing a little and that might reduce those
 > racing sparks. You might then be able to couple the coil more tightly
which
 > should give better results. I had a coil that was basically the exact same
 > setup as yours. You are doing better off than I did, I only got 9 or so
 > inches from mine. I never did figure out what was wrong with it and had to
 > take it apart for the time being. <Sob> You may also want to try a
breakout
 > point if you haven't already. Basically just a wire taped in the center
(or
 > side, or whatever) of the toroid. Good luck!
 >
 > Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: "Rodney Goolsby by way of Terry Fritz "
 >
 >  >
 >  > Primary
 >  > > 7.5 turns, .25 in. copper tubing, .25 in. spacing, vertical.
 >  >
 >  > Height?, diameter? (I assumed 2.5", 5".)
 > height: 5" diameter: 4"
 >
 >
 > Secondary: 3" D, 21.5" H
 >
 > primary: .25" copper tubing .25" spacing, 5" D, 8" H
 >
 > Power: 12/30 NST, .015uf 20kvdc mmc cap
 >
 > Topload: 24" by 4" taped triod
 > -or-
 > 19" by 3" taped triod
 >
 > Sparkgap: cheap adjustable series gap
 >
 > I tried tuning it with either topload but, still dont work right, 1 foot
 > sparks max, and racing sparks up the side. Coupling set to .12, I don't
 > know what to try next.
 >
 >
 >
 > -Chris
 >
 > "
 >
 >