Re: Tesla's CS Coil Data from ScanTesla and all....

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Bart,

At 02:49 PM 6/26/2005, you wrote:
> Cool, thanks Terry (I'm really not going crazy!).
>
> I modeled the Wendover coil and came up with a completely different set of 
> parameters (thus, my concern). I can say the Wendover coil primary and 
> secondary info was excellent. Both were about 43 kHz. The tertiary 
> interestingly was closer to 100 kHz. Something is wrong with the 3rd coil 
> setup (either very wrong or something is seriously missing. i.e., force 
> driven? because it is "absolutely not" resonate to the primary and 
> secondary - even with huge toploads.).

I wonder if K23 and K13 couplings would help fix that stuff.  I just can't 
believe Tesla's CS coil was that bad...  I am sure it was not perfect, but 
there is good reason to wonder if the model is not taking something 
correctly into account...  There is an outside chance Tesla coil have 
gotten 30+ foot arcs out of it, but I think it needs help...  Antonio could 
probably add these to the A matrix easily or "I" might even try ;-))  But 
all the engines I have working internally on are in the junk yard now :o)

There is also Bill Wysock's coil that has very good info available.  It is 
also the world's "best" coil at a hair under 60 foot arcs...  That machine 
is also modern so we don't have to worry about anything being messed up on 
it like salt water caps and other odd lossy things...  Bill's coil is made 
with all the modern stuff and it's design is very good.  If the models 
don't agree with Bill's coil, the "models" are wrong...  I could not get 
his site before but it is up today:

www.ttr.com

Model 13.

That would be a good coil to refine the models with since we know so many 
solid facts about it.  Bob Golka's coil is very close to Tesla's also.

The parameters and input files for MandK, ScanTesla, E-Tesla that I used 
are here if you want to check my input data:

http://drsstc.com/~terrell/modeling/Teslas-CScoil.ZIP

Probably more interesting than cleaning the grill ;-))

I think Richard Hull's magnifier had the secondary coil set at 90 degrees 
to eliminate Kx3 coupling!!


> I agree regarding Tesla's 3rd coil, including Golka's rendition. When 
> these coils are placed center to the sec & pri systems, there is 
> absolutely mutual induction occurring. This is very different than the 
> typical maggy built the past several years. Even my maggy built a year or 
> so ago was a better representation of Tesla's coil than the typical maggy 
> (3rd coil centered to the driver).
>
> Golka's pri to sec coupling was about 0.33. I didn't model the tertiary 
> coupling, but I may do that following this email (unless my honey forces 
> the BBQ cleaning soon - a mans sixth sense is pulsing!). I must say thanks 
> to Mike for posting Golka's data. There is absolutely no doubt Golka had a 
> very interesting coil to play with, and I care very little for anyone who 
> says otherwise. Golka built a massive coil which was certainly of an 
> "older vintage style" coil than anything we have today. Not even Wysock's 
> coils or many of the other "professionals" have pulled off anything like 
> this. While modeling Golka's Wendover coil, I developed a whole new 
> appreciation for what he did. I've heard some interesting "comments" 
> through my time on the TCML regarding Golka. Although I can understand why 
> those negative comments may have had some credibility, I cannot discount 
> Golka's ability to build a coil in the "likeness" of Tesla and to a grand 
> scale. My hat is off to Golka!

There is "friction" between some folks for sure, but Mike has provided us 
with new "facts" about the Golka's coil so we can study them without 
getting into the personal issues.  Of course, those personal things are 
their problem, not ours ;-)

Today we seem to have tons of wonderful data available!!  Thank goodness 
Tesla wrote stuff down and it survived and got published!!!

Mike's data on Bob Golka's coil provides more info than we could have ever 
hoped for:

http://www.hot-streamer.com/mike2004/Wendover_Coil_Print_And_Spec.jpg

So we need to work on the magnifier models.....

Cheers,

        Terry


> Take care,
> Bart
.................