Re: Ryan's Coil = Salvaged :-)

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

Original poster: "Albert Hassick by way of Terry Fritz <twftesla-at-uswest-dot-net>" <uncadoc-at-juno-dot-com>

Ryan, Only one coat of polyurethane?   Al.

On Wed, 10 Jan 2001 12:03:59 -0700 "Tesla list" <tesla-at-pupman-dot-com>
writes:
> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" 
> <Esondrmn-at-aol-dot-com>
> 
> In a message dated 1/9/01 6:14:34 PM Pacific Standard Time, 
> tesla-at-pupman-dot-com 
> writes:
> 
> <<  Okay, it looks like I live on to coil another day.  I'm not sure 
> what all
>  was said about the thicker PVC and absorbing more RF, but I was 
> able to
>  completely sand away the carbon track and reveal fresh PVC 
> underneath.  I
>  then applied a new coat of polyurethane to the inside of the form. 
> It's
>  drying as we speak...
>  
>     So now I salvaged the coil, but I desire to find out what is 
> truly wrong
>  with the system and make this coil work.  Starting with the 
> ballast.  I
>  have no powerstat/variac.  I had one for the 120v power for the 
> neon sign
>  transformers, but I have no idea how I'm going to get a 240v 10kva
>  powerstat for the pig. ($$$) I have been using microwave oven 
> transformers
>  as ballasting, some fuses, and a master switch.  The extension cord 
> used to
>  transport the power is that oilfield stuff made with 3 6-gauge 
> conductors
>  coated with HEAVY insulation.  We lucked out by having a relative 
> that
>  works in the oilfield.  
>  
>  Just don't tell me to tap my primary in any further. :-)
>  
>  -- Ryan Ries
>   >>
> Ryan,
> 
> I would suggest to go back to the neon sign transformers and the 
> variac.  At 
> low power, run the coil and adjust for best tuning.  You should be 
> getting at 
> least a couple of feet of spark with only a 12 kv 60 ma transformer. 
>  Add as 
> many neon sign transformers in parallel as the variac will support.  
> Check 
> that the sparks are increasing as the input power is increased.  
> This would 
> be a good time to also adjust the coupling between primary and 
> secondary.  
> You probably want the coupling somewhat looser at 10 kva than you 
> find best 
> at lower power.  Once you are able to generate several feet of spark 
> with the 
> neon sign transformers, then go back to the larger power supply.  I 
> would 
> encourage you to ultimately get a variac for the 10 kva system.  
> Without a 
> variac, I would suggest you make some kind of switch system where 
> you can 
> start out with several ohms of series resistance and gradually 
> decrease it to 
> zero when everything looks good performance wise.  I made such a 
> system with 
> 7 oven elements with switches to connect them in parallel.  With all 
> switches 
> open, one element is in series with the pole transfomer primary - I 
> think 
> this was about 20 ohms.  With all switches closed, I think the 
> resistance is 
> about 1 ohm.
> 
> Good luck, Ed Sonderman
> 
> 
> 

________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:
http://dl.www.juno-dot-com/get/tagj.