Re: How to rise the secondary? (fwd)

---------- Forwarded message ----------
Date: Tue, 07 Jul 1998 20:57:36 -0400
From: "Edward J. Wingate" <ewing7-at-frontiernet-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: How to rise the secondary?

Tesla List wrote:
> -----Original Message-----
> From: John H. Couture <couturejh-at-worldnet.att-dot-net>
> To: Tesla List <tesla-at-pupman-dot-com>
> Date: Wednesday, July 01, 1998 9:29 PM
> Subject: Re: How to rise the secondary?
>   Ed -
>   You build great coils so I am not going to tell you how to tune your
> coils. However, a computer can tell you if the tuning equation
>   LpCp = LsCs   is balanced. The tweeking can be done with taps on the
> primary of a properly designed and tuned coil.


I think you missed my point John. I don't care if >>your<< equasion is
balanced or not because I am working with REAL hardware!! There is a
great deal more to fine tuning a newly built Tesla coil system than
simply adjusting the primary tap! Especially with larger systems. I wish
it were that easy!
>   Do your tests indicate that moving the secondary away from the primary
> does not reduce the spark output compared with a tuned coil with a primary
> that has enough clearance to prevent sparking between the pri and sec coils?

If the system is arcing over and producing interturn secondary arcing as
a result of being over coupled then spark output is definately not
reduced by raising the secondary. The ouput will drop to zero if a coil
is operated in this mode for more than a few seconds!( If you don't
believe me, try it!!) I am "creating" just enough clearance to prevent

How do you know your "tuned" coil doesn't have much more clearance than
it really needs and is not operating at maximum effeciency because of
that fact?

>   Do you believe your coils are critically coupled and work best when the
> "telltale signs of overcoupling disappear"? What are the telltale signs?

Is this a trick question?  You really don't know what the signs of
overcoupling are?? Come on.........really??!!

 >   I do not get my hands dirty now for several reasons. One of them is
> my efforts look terrible compared to your fine craftmanship.

     John Couture

 While do appreciate the kudos, craftsmanship doesn't matter when it
comes to learning to bring a system into synergy through doing!

Still with dirty hands in N.Y.

Ed Wingate  
> ----------------------------------------------------------------
> At 11:01 PM 6/30/98 -0500, you wrote:
> >
> >----------
> >From:  Edward J. Wingate [SMTP:ewing7-at-frontiernet-dot-net]
> >Sent:  Tuesday, June 30, 1998 9:19 AM
> >To:  Tesla List
> >Cc:  stcole-at-deltanet-dot-com
> >Subject:  Re: How to rise the secondary?
> >
> >Tesla List wrote:
> >>
> >> ----------
> >> From:  John H. Couture [SMTP:couturejh-at-worldnet.att-dot-net]
> >> Sent:  Sunday, June 28, 1998 12:23 PM
> >> To:  Tesla List
> >> Subject:  Re: How to rise the secondary?
> >>
> >>   Ed, All -
> >>
> >>   What are the advantages of raising the secondary? This will change the
> >> coupling and tuning but that can be done by proper design of the primary.
> Or
> >> have you found other reasons for raising the secondary?
> >>
> >>   I would expect that moving the secondary away from the primary would
> >> reduce the spark output.
> >>
> >>   John Couture
> >>
> >
> >John,
> >
> >I >>ALWAYS<< deliberately build my coils so they are overcoupled from
> >the start and then use spacers to raise the secondary in 1/4" increments
> >until the telltale signs of overcoupling disappear. That way, I know
> >that the coil is properly coupled for maximum performance! You can't
> >fine tune a Tesla coil system on a computer. I want to SEE and FEEL what
> >the REAL hardware is doing when I tune a coil and a computer program is
> >NOT real hardware! One can tweek and tune with a computer program and be
> >a keyboard coiler for as long as one likes, but there is no substitute
> >for real capacitors, wire, transformers, spark gaps, etc. The real test
> >is hands on building and tuning experience with real Tesla coils and
> >equipment. You have to get your hands dirty John! Only then has the
> >Tesla coiler come home.
> >
> >With dirty hands in N.Y.
> >
> >Ed Wingate
> >
> >
> >
> >