Re: [TCML] VTTC Coupling

["DC Cox" <resonance@xxxxxxxxxxxx>]

Yea, I've been short on 3 of the 5 major large US homebuilders for the past
4 years, and so far, in the past 4 years, up nearly 850%!!

I think I will hold my short position in these stocks until next April, then
dump it and cash in!

I'm wondering after all the dust clears in the next 24 months if the tech
stocks will run rampant again, like in the 80's?  There is a ton of money
out there just waiting for that stampede to reoccur.  I know Buffet is
playing the energy sectors very hard right now.

I would suspect that a coupling of around 0.18 to 0.2 would be the max for
good performance.  I had a pair of 811As in a VTTC once and set my coupling
at
0.18.  I also tried tighter coupling but the spark output actually
decreased. I think the energy reflected back into the primary circuit
started showing modes
of constructive and destructive interference hence decreasing the output.  I
noted values of 0.14 to 0.18 seemed to produce the very best results.

Regards,

D.C. Cox






On Mon, Sep 15, 2008 at 4:32 PM, <futuret@xxxxxxx> wrote:

> Hi Dr. R,
>
> My coupling was rather low on that coil at around 0.16 or 0.18
> I think.  I did some work at k = 0.35 but it was probably actually
> k = 0.30 or so.  At that point a giant flashover occured and
> destroyed the primary and seconday.  Cameron Prince uses
> the raised grid coil.  He's applying so much peak power to the system,
> that he can only run it in staccato I believe.  The extra high
> voltage he's using may be changing things in some way, I don't
> know.  I'm not really sure what's happening in his coil to
> explain the high grid coil.  I've never heard of anyone
> else using such a high position for the grid coil.  OT: Nice
> stock market action lately !
>
> Cheers,
> John
> ----------
>
>
> -----Original Message-----
> From: DC Cox <resonance@xxxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Sent: Mon, 15 Sep 2008 6:04 pm
> Subject: Re: [TCML] VTTC Coupling
>
>
>
> John:
>
> What coupling k value have you measured on your 833 coil?  I would guess
> around 0.2 ???
>
> What is possible before destruction begins?
>
> I've read one person has his grid feedback coil nearly 40% up the height of
> the sec coil.  And he's getting very good outputs.
>
> Dr. Resonance
>
>
>
>
> On Mon, Sep 15, 2008 at 3:34 PM, <futuret@xxxxxxx> wrote:
>
> I don't think it would work well.
>>
>> John
>> -------
>>
>>
>> -----Original Message-----
>> From: Phillip Slawinski <pslawinski@xxxxxxxxx>
>> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>> Sent: Mon, 15 Sep 2008 3:50 pm
>> Subject: [TCML] VTTC Coupling
>>
>>
>>
>> Is it possible to over couple a VTTC?  I have a 3.5" secondary, and I
>>
> have
>
>> a
>> 4.5" form that I could use for  my primary.  If I used the 4.5" form
>>
> would
>
>> this be taking things a little too far?  Would there be any real
>>
> benefit to
>
>> doing this?
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