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Re: Non-copper components, was Re: Forwarded mail.... (steel components) (fwd)



---------- Forwarded message ----------
Date: Sat, 16 Jun 2007 00:07:46 -0500
From: Drake Schutt <drake89@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Non-copper components,
     was Re: Forwarded mail.... (steel components) (fwd)

I think what he was saying is that why go to the expense of using heavy
gauge (expensive) copper wire in the tank circuit when the MMC leads are
only say 16 awg (ish)?  I'm also thinking about that now that I am starting
to near completion on my own coil (12kv/60ma).  Mostly I was wondering about
connections though.  Could you guys throw out some good ways to connect the
tank cap, spark gap, etc?

thanks
drake

On 6/15/07, Tesla list <tesla@xxxxxxxxxx> wrote:
>
>
> ---------- Forwarded message ----------
> Date: Sat, 16 Jun 2007 10:29:33 +0800
> From: Peter Terren <pterren@xxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Forwarded mail.... (steel components)
>
> I still have a burn mark on my arm from touching a hot steel bolts used as
> a
> terminal on a rolled capacitor. (Thermal burn not electrical). I changed
> them to brass and no heating now.  Also a metal crocodile clip used to tap
> the primary got hot enough to melt solder. A brass connector has fixed
> that.
> Hysteresis losses in iron at RF will waste energy so best avoided.
> MMC wires are steel? Mine are tinned copper and definitely not magnetic?
> Peter  http://tesladownunder.com
>
> > ---------- Forwarded message ----------
> > Date: Fri, 15 Jun 2007 15:46:55 +0100
> > From: Tom Trevethan <t.trevethan@xxxxxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> >
> > Hi all,
> >
> > I've been 'lurking' on the list for a while now - soaking up lots of
> > useful
> > information. Now I have a question to ask: how critical to performance
> are
> > the
> > materials that make the tank circuit? I've read that steel is best
> avoided
> > (due
> > to it being ferromagnetic) - but it is dificult and expensive to
> construct
> > the
> > circuit entirely out of copper and tungsten. In my coil I use thick
> copper
> > cable (8 awg) with copper pipe lugs and I've tried to use brass bolts
> > where
> > possible (but I use steel nuts and bolts in some places). My primary tap
> > is
> > made of steel and I also recently found out that the 'brass' bolts I am
> > using
> > for stationary electrodes in my rotaty gap are actually brass plated
> > steel. Am
> > I likely to see significant improvements in performance if I go to the
> > effort
> > of replacing these parts? After all, it seems overkill when the wires
> > leaving
> > the capacitors of my (and everybody elses) MMC are made of (thin) steel.
> >
> > Thanks in adavance for any advice.
> >
> > Tom
>
>
>
>