Re: New Coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Scott Hanson" <huil888@xxxxxxxxxxxx>

Mike -

Many people on this list have one or more of the .03uF @ 35 KV Maxwells, so
there is a lot of interest in any real, documented failures, and the
conditions under which the failure occurred. You mentioned that you have
photos, but did not post them on Hot-Streamer.com because you just didn't
know how. Just email the photos to Terry Fritz, and he will be happy to post
them. It would be useful to post all the photos you have that show the
construction and layout of this coil, including the RSG, safety gaps,
primary construction, etc, etc.

Regards,
Scott Hanson

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, April 28, 2005 1:16 PM
Subject: Re: New Coil


> Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
>
> It was a single 15/60 with a sync rotary (spacing between stationary and
> moving electrodes was close to 1/16" on each side (minus the play in the
> motor) and 120v in from a 0-120 variac. It was a single cap, so it was
> almost 3x resonant value (going by the geek group chart at the time). I
> have a 2nd one that failed in single mode (can't remember if I was using a
> 15 kv nst or a tougher 14.4 kV PT as this was a couple years ago), that
> simply cracked the case instead of guts and oil all over, but I'll be
> dissecting it this weekend.
>
> Mike
> ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Thursday, April 28, 2005 1:50 PM
> Subject: Re: New Coil
>
>
> >Original poster: Esondrmn@xxxxxxx
> >Ok Mike,
> >
> >You are the first, to my knowledge, to report a failure with one of the
> >Maxwell caps that many of us have.  Can you please give us more details
of
> >the system the cap was in when it failed?  Type of gap, number of
> >individual gaps, gap spacing, power supply voltage and current, primary
> >and seconday details, etc.  Did it fail with just one cap in the circuit,
> >or two in parallel, etc?  Was it just the right size to be resonant with
> >the power supply transformer?
> >
> >Thanks,
> >
> >Ed Sonderman
> >
> >In a message dated 4/27/05 10:15:40 AM Pacific Daylight Time,
> >tesla@xxxxxxxxxx writes:
> >Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>
> >
> >They work fine on 12kv nst's (about a dozen 3-5 min runs and still
ticking
> >in a bigger coil with more in series), explode after a few min on 15kv
ones
> >(makes a nice 12" blue/orange fireball tho with a big mess).
> >
> >Mike
> >----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> >To: <tesla@xxxxxxxxxx>
> >Sent: Tuesday, April 26, 2005 7:09 PM
> >Subject: Re: New Coil
> >
> >
> > >Original poster: Esondrmn@xxxxxxx
> > >-snip-
> > >
> > >In a message dated 4/24/05 3:27:23 PM Pacific Daylight Time,
> > >tesla@xxxxxxxxxx writes:
> > >I plan on using my welder for current control and
> > >either my two 1256's or my three 540 volt 30 amp
> > >voltpac stack. I currently use my maxwells three deep,
> > >but may only use them two deep for 75 nF 70 kV rating,
> > >which is kinda small for a coil this size. I'm afraid
> > >to use them as 300 nF 35 kV, as this seems to be too
> > >close to the edge. I have no idea how rough a life
> > >these guys had before I got them.
> > >
> > >Adam
> > >
> > >Adam,
> > >
> > >I have a couple of those Maxwell caps also, and as you, have been
> > >concerned about using only one and have always used the two in series.
I
> > >have read where lots of folks on this list have the same caps.  Is
anyone
> > >only using them individually, or multiple in parallel?  If so, with
what
> > >power supply?  I would feel ok at say 10 kv but both of my coils use a
15
> > >kv supply and I have just been chicken to find out what kind of voltage
> > >they can really take.
> > >
> > >Ed Sonderman
> >
> >
> >
> >
>
>
>
>