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Re: Capacitor Help

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Malcolm,

One thing you may want to note is that you will probably
find it a bit of a challenge to "fish" the working end of a
zip tie through one predrilled hole of the PVC and up and
out of the neighboring hole, especially with PVC pipe as
small as 3/4". What "I" did to meet this challenge was to
fold the working end (the end without the zip lock mecha-
nism) in two places about 3/4" to 1" apart, then take a
pair of lineman's pliers and pinch the folds together with
the pliers very firmly. This will leave the working end
resembling a hook with two 90 degree elbow. This makes it
somewhat easier to fish the end of the tie into one hole and twist
it around to poke out of the adjacent hole as it's obvious that you
won't be able to slide your free hand into such a small diameter
pipe to assist in this procedure.

Keep us informed as to how your project works out and
shoot all of your questions our way as the collective knowledge
of this group is probably without a doubt the world authority on
Tesla coil design and construction.

Good luck,
David Rieben

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, December 14, 2005 2:45 PM
Subject: Re: Capacitor Help



Original poster: "MalcolmTesla" <tesla@xxxxxxxxxxxxx>

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, December 14, 2005 12:59 PM


> Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>
>
> Hi Malcolm,
>
> Your mock-up wire holder should probably be enough to
> insulate the primary coil tubing from the wooden supports.
> Bart is quite correct about wood wanting to carbon track
> as I have witnessed this firsthand. You could also use short
> lengths of plain small diameter PVC pipe as the "runners"
> as well as plexiglass. Check out photos  2 thru 7 on my
> Tesla coil webpage at: http://dawntreader.net/hvgroup/david/gm.html
> I know this is a larger scale coil than your proposed coil,
> but it should give you a general idea.
>
> Good luck and may your sparks be LONNNGGG,
> David Rieben

David, funny you should reply.  I was just going to email you.  Your web
page gave me the idea for a primary that I could build.  I just got back
from home depot.  I got 10 feet of 3/4" PVC, 200 little zip ties (may need
more), and a new 50 foot coil of 1/4" coper tubing.  I'm going to attempt to
build a primary like you did.  Well on a slightly smaller scale.

Everyone on the list gave me lots of good ideas.  I looked at plexiglass at
home depot and it was very expensive and they only had thin sheets that I'd
have to cut up and stack side by side to make thick runners to hold the
tubing.  After throwing around a few ideas I decided to copy Davids. We'll
see how that goes.  I'm going to work on that tonight.

Thanks again everyone.  I'll keep the pictures coming so you can see how I'm
doing.
Malcolm - KC

> ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Wednesday, December 14, 2005 12:19 AM
> Subject: Re: Capacitor Help
>
>
> >Original poster: "MalcolmTesla" <tesla@xxxxxxxxxxxxx>
> >
> >Bart,
> >
> >I got to thinking some more about what you said below about the arcing
> >across the primary.  I'm certainly not questioning your experience and
know
> >how but wouldn't it be a shorter path for the current in the primary to
just
> >flow around the coil than arc across it?  Obviously not since arcing
occurs
> >and is an issue.  I'm just not sure how.
> >
> >Anyway I got to thinking what if I can't find some thick plexiglass
> >tomorrow.  Could I just use plastic wire holders?  Do all the metal
screws
> >used in such a setup pose a problem?  Perhaps affecting the magnetic
field?
> >See these two pics for what I'm talking about. I quickly just mocked > >up 
a
> >piece of my idea.
> >http://www.v8-ranger.com/temp/tesla/8.jpg
> >http://www.v8-ranger.com/temp/tesla/9.jpg
> >
> >This would insulate the primary from the wood.  Not by much but I think
> >enough to stop carbon traces from forming.
> >
> >Let me know what you think
> >
> >Thanks again
> >Malcolm - KC
> >
> >----- Original Message -----
> >From: "Tesla list" <tesla@xxxxxxxxxx>
> >To: <tesla@xxxxxxxxxx>
> >Sent: Tuesday, December 13, 2005 10:31 PM
> >Subject: Re: Capacitor Help
> >
> >
> > > Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
> > >
> > > Hi Malcolm
> > >
> > > Thanks for taking all the pictures. They are certainly a great help.
> > > The primary is my #1 concern. Don't lay the primary tubing into > > > those 
> > > wooden runner notches, not even with varnish on the form. You "will"
> > > eventually, and soon, arc into the runners and carbon track a
> > > distance through the wood. I use wooden forms myself, but, I
> > > "learned" to add a distance between the wood and the tubing to
> > > prevent just this problem. Wood is great for cost and machinability,
> > > as long as you adhere to high voltage physics. I use plexiglas
> > > runners between my wooden runners and the actual coil. On some other
> > > primary's, I've used an actual plastic cylindrical standoff (approx.
> > > 1/4 inch from primary to wood).
> > >
> > > Your runners look "prepared" for the tubing to just lay down and set
> > > inside the notches. I would recommend letting the notches serve as
> > > the "position point" for the tubing, but find a pliable insulator to
> > > cut to width and length of the runners which you can keep between > > > the 
> > > windings and runners (at least 1/8 inch thickness).
> > >
> > > Just for reference, I've caused a 4 inch length carbon track in G10
> > > disc material (everything is conductive when conditions are right).
> > > And for some reason, we coilers always seem to find those > > > conditions. 
> > >
> > > Best of luck,
> > > Bart
> > >
> > > PS. If you need any explanation of Javatc, just contact me offlist.
> > >
> > > Tesla list wrote:
>
>
>
>
>