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Re: Secondary internal arcing (fwd)
---------- Forwarded message ----------
Date: Tue, 11 Sep 2007 21:43:20 -0700
From: seanick <edgarsbat@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Secondary internal arcing (fwd)
I can say from personal experience that a sealed baffle works great to
prevent internal arcing. After an internal arc developed in my current
secondary, once not long after I first made it, I put in a 4" spaced baffle
in the approx. center, covered with plexi and fiberglass, and it hasnt had
any trouble (internally) since.
also, I can say that hot-gluing clear vinyl tube to the outside of the
secondary every foot or so does NOT prevent racing external arcs. take a
glance at this (from last saturday):
http://picasaweb.google.com/calumet45/TeslaCoilSeptember8th2007/photo#5108069972092515458
This is the one picture where I didn't have a breakout point on the topload.
Aaron said something about the secondary being a smaller diameter than the
minor diameter of the toroid might make it look like a better breakout
point. Makes sense to me, but maybe he was joking, I don't know....
anyway I promptly re-attached the breakout point (a drywall screw pushed
through the sticky side of a scrap of the metal tape) and resumed the
controlled arcing with no further trouble. check out the rest of the set
while you're at it. was a fun time, except for the rotor of my spark gap
catching fire from the epoxy repairs I put on it after a previous run....
heheh
-NICK
ps. anyone want to sell/machine a new rotor?
required specs in case anyone's interested:
1/2" thick G10,
9" dia,
4x3/8" electrode holes spaced every 90 degrees at approx. 4" from center
3/4" center hub
:)
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, September 09, 2007 10:54 AM
Subject: Re: Secondary internal arcing (fwd)
> ---------- Forwarded message ----------
> Date: Sun, 9 Sep 2007 10:58:50 -0700
> From: huil888 <huil888@xxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Secondary internal arcing (fwd)
>
> David -
>
> No, the function of a sealed baffle is slightly different from a creepage
> disk.
>
> A properly sealed baffle is a solid wall of insulating material separating
> two areas at different voltage potentials.
>
> A creepage disk is a piece of material placed between two areas at
> different
> potential that increases the effective distance across which surface
> arcing
> or tracking must take place. Therefore, when creepage disks are installed
> it
> increases the voltage at which surface tracking begins to take place.
>
> Regards,
> Scott Hanson
>
>
> ----- Original Message -----
> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Sunday, September 09, 2007 9:29 AM
> Subject: Re: Secondary internal arcing (fwd)
>
>
>>
>> ---------- Forwarded message ----------
>> Date: Sun, 09 Sep 2007 04:20:34 +0000
>> From: david baehr <dfb25@xxxxxxxxxxx>
>> To: tesla@xxxxxxxxxx
>> Subject: Re: Secondary internal arcing (fwd)
>>
>>
>> Hmmm, these 'internal baffles' , could be called creepage disks ?
>> Why not use 'em on the outside of the coil also ?
>>
>> ________________________________________________________________________________
>>
>> From: "Tesla list" <tesla@xxxxxxxxxx>
>> To: tesla@xxxxxxxxxx
>> Subject: Re: Secondary internal arcing (fwd)
>> Date: Thu, 6 Sep 2007 22:01:11 -0600 (MDT)
>> >
>> >---------- Forwarded message ----------
>> >Date: Thu, 6 Sep 2007 22:57:28 -0500
>> >From: resonance <resonance@xxxxxxxxxxxx>
>> >To: Tesla list <tesla@xxxxxxxxxx>
>> >Subject: Re: Secondary internal arcing (fwd)
>> >
>> >
>> >
>> >Use two internal baffles of 1/4 inch clear acrylic sheet
>> (plexiglass) approx
>> >5-8 inches in from each end. Use generous amounts of
>> silicone (GE Silicone
>> >II) to seal the baffles in place.
>> >
>> >Also, before winding, be sure to sand a PVC tube thoroughly
>> both inside and
>> >outside prior to applying --- again, both inside and outside
>> --- 3 generous
>> >coats of AC-43 or equivalent.
>> >
>> >With these treatments it should hold up for dozens of years.
>> >
>> >Dr. Resonance
>> >
>> >Resonance Research Corp.
>> >www.resonanceresearch.com
>> >
>> >
>> >----- Original Message -----
>> >From: "Tesla list" <tesla@xxxxxxxxxx>
>> >To: <tesla@xxxxxxxxxx>
>> >Sent: Thursday, September 06, 2007 10:22 PM
>> >Subject: Secondary internal arcing (fwd)
>> >
>> >
>> > >
>> > > ---------- Forwarded message ----------
>> > > Date: Thu, 06 Sep 2007 22:47:22 -0400
>> > > From: Rich Winders <rwinders_3@xxxxxxxxxxx>
>> > > To: tesla@xxxxxxxxxx
>> > > Subject: Secondary internal arcing
>> > >
>> > >
>> > > Okay quick question.
>> > >
>> > > I was having arcing inside my secondary. it is a white
>> pvc pipe 4In di and
>> > > wound
>> > > with 27 awg wire 16 inchs tall . From the what I could
>> tell from the arc
>> > > marks
>> > > they began (punctured) at the bottom or lv end of the
>> secondary and
>> > > traveled to
>> > > some where up my coil. i tried many differnt things to
>> decrease this
>> > > arcing.. ..
>> > > Increase coupling, varnish on the inside, and even
>> stuffing the coil with
>> > > bubble
>> > > wrap and sytrofoam nothing really seemed to work.. so i
>> bought 4 lbs of
>> > > wax and
>> > > melted it on my stove and poured the wax into the form of
>> my secondary and
>> > > let it
>> > > harden.. after running my coil i dont see any signs of
>> arcing, melted wax
>> > > or arc
>> > > marks.. or any kind of ozone or burnt smell. i was
>> wondering was i right
>> > > to go
>> > > with wax or should i have maybe filled with with a
>> transformer oil?
>> > >
>> > > Rich w
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> >
>>
>> >_______________________________________________________________________________
>> ________
>> > >
>> > > Windows Live Hotmail. Even hotter than before Get a
>> better look now.
>> > >
>> > >
>> > >
>> >
>> >
>> >
>> >
>>
>>
>> ________________________________________________________________________________
>>
>> A place for moms to take a break!
>>
>>
>>
>