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Non-copper components, was Re: Forwarded mail.... (steel components) (fwd)
---------- 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?
> ---------- 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
> information. Now I have a question to ask: how critical to performance are
> materials that make the tank circuit? I've read that steel is best avoided
> to it being ferromagnetic) - but it is dificult and expensive to construct
> 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
> possible (but I use steel nuts and bolts in some places). My primary tap
> made of steel and I also recently found out that the 'brass' bolts I am
> 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
> of replacing these parts? After all, it seems overkill when the wires
> the capacitors of my (and everybody elses) MMC are made of (thin) steel.
> Thanks in adavance for any advice.