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Re: Mega-Sized Secondaries
Tesla list wrote:
> Original poster: "Albert Hassick" <uncadoc-at-juno-dot-com>
>
> Uh, excuse me for asking, but what is it that is so terribly bad about
> this commercially offered system. Most people cannot even get their
> coils up to these specs when they build their first coil. I think this
> outfit does an ok job considering the usual beginner coil. And what is
> wrong with winding a Tesla secondary on a cardboard form? I have wound
> many on cardboard and they all work great! Al.
al,
in my opinion, there may be nothing wrong with this coil system? the only
factor to be considered is the cost itself, if it be a pig powered system
with commercial caps, then the commercial cost has to be high? the components
alone are costly.
for the "average" coiler, the purchase of a pig is not only expensive, but a
hard thing to find, the commercial caps can be had on ebay, with some fancy
footwork and last minute bidding to keep the cost down, but like the saying
goes in drag racing, "speed costs money, how fast do you want to go?" so in
coiling, "streamers cost money, how long do you want them?".
i think that for a beginner to jump in, feet first, and build a pig powered
system, they would loose the benefit of "the learning curve", i mean, with
this system, and no prior experience, the output could be so disappointing
due to lack of tuning skills, that a coiler could be turned off by the cost
over satisfaction formula.
now for an individual that has some coiling experience, but no piggy
knowledge, these plans may be a helpful wealth of info?
as for "we coilers calling it a hack job", well i've seen some cardboard
tubed, space wound, async gapped coils that seem to perform very well. air
core chokes being bad?, most of us use rf line filters and my present system
used chokes wound on forged steel "hitch rings" and after substituting a
commercial 35 amp rf filter in line, i'm not sure if the "hawg" chokes
weren't better?
"crap-tacular"? hmmm, i haven't been fortunate enough for every last one of
my coils and designs to work great, be beautiful, and perform like a "gift
from god" right out of the gate.
so i'm with you, people shouldn't knock a company that tries to offer a
product to the public unless there willing to offer a better product,
cheaper, themselves.
just my opinion, marc
>
>
> On Fri, 27 Oct 2000 11:54:44 -0600 "Tesla list" <tesla-at-pupman-dot-com>
> writes:
> > Original poster: "acmnovak" <acmnovak-at-email.msn-dot-com>
> >
> > Dan-
> > I think what is seen on the btc-5 (stands for "big tesla coil") is
> > what we
> > coilers call a "hackjob". The folks at amazing1-dot-com are not tesla
> > coil
> > specialists, and aren't all that good at making them. Notice they
> > don't
> > actually sell model btc-5, but only the plans for it. I've seen the
> > plans
> > for it an, let me say, they were quite a laugh. The secondary is
> > wound on
> > a big carboard from (spacewound) with #22 if my memory serves me
> > correctly.
> > The power is supplied by a pig, the caps are commercial, there are
> > air
> > chokes, and an ASYNC RSG all in the same package. This is the best
> > example
> > of tesla coil inefficiency. The coil runs at excessive break rates
> > with
> > small bang size which really sin't any good for "conventional"
> > coils.
> > However, if one were to design a magnifying coil to increase the
> > output,
> > much better results "might" be achived. The coupling factor leaves
> > something to be desired but at least it avoids arcs...
> > Anywho, The secondary on the btc-5 is NOT wound in sections. It is
> > simply
> > wrapped in electrical tape to provide a small satndoff to the
> > voltage
> > gradient in the middle of the coil. If the tape were not in place,
> > the coil
> > would have racing sparks and probably burn down. How do i know this?
> > Well,
> > My first coil had such problems. .. Keep in mind this was before the
> > popularity of SRSGs and MMCs. I had a 4"x14" secondary which had
> > racing
> > sparks because of the helical primary I made. Needless to say this
> > is a
> > badthing (tm).
> > Moral of the story...
> > DO NOT design your coils like the ones seen at amazing1-dot-com... they
> > are
> > crap-tacular (tm).
> > Geez they are over priced too, the smallest coil can be constructed
> > for
> > about $30 but they sell it for WAY more...
> > My 2 cents,
> >
> > -Michael
> >
> > ----- Original Message -----
> > From: Tesla list <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Friday, October 27, 2000 9:18 AM
> > Subject: Mega-Sized Secondaries
> >
> >
> > > Original poster: "Dan Kunkel" <dankunkel-at-hotmail-dot-com>
> > >
> > > Tesla Enthusiasts,
> > >
> > > I have notice that (some) extremely large Tesla Coils have the
> > secondaries
> > > wound in several sections. At least that is what it appears to be.
> > For an
> > > example check out the BTC 5 coil at the bottom of the page...
> > >
> > > http://www.amazing1-dot-com/tesla.htm
> > >
> > > You can see several black sections indicating a space in windings
> > on the
> > > secondary. Why is this done?
> > >
> > > Dan
> > >
> >
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> >