Re: AMRAD Spark Gaps

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "bob golding by way of Terry Fritz <twftesla-at-uswest-dot-net>" <yubba-at-clara-dot-net>

Hi All,
   A word of warning about using viton and similar materials. Some of them
decompose into hydrofluoric
acid when they get above 400 degrees C. Bad ,very bad, both for fingers and
bone marrow. Instant
amputation. Read that at the local garage whilst waiting for my car to be
fixed. It was issued by the
local fire officer ,and aimed at mechanics working on fire damaged cars. It
is used on fuel lines and
brake seals. apparently. Be careful out there.

cheers
bob golding

Tesla list wrote:

> Original poster: "Dr. Duncan Cadd by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <dunckx-at-freeuk-dot-com>
>
> Date: 27 December 2000 18:52
> Subject: Re: AMRAD Spark Gaps/ lo-Z magnifier
>
> >Original poster: "Luc by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <ludev-at-videotron.ca>
>
> Hi Luc!
> >
> >Hi Ducan
> >
> >I make a fast search on the web and found : silicon rubber
> O-ring can stand
> >500° F some 600°F , Viton are good for 16 hours at 600°F.
> >
> Thanks for that.  I had a feeling that PTFE would do the
> job, but wanted to be 'authentic' and also have you seen the
> price they charge for this?  Whaaaaaaa ;-(
>
> Silicone rubber O rings however are much more affordable.
> If I ever get the urge to expand my quenched gap setup, or
> ditch authenticity for leakproof gaps I think that's the
> road I'll go.  In the meantime I'll squeeze another turn out
> of the clamping bolts with that adjustable spanner, dab a
> bit more grease on it and leave it at that.
>
> BTW the low impedance magnifier idea works!  First light
> this morning, though not very impressive.  Just needs a LOT
> of development work, for which read 'coil winding' :-)
>
> Dunckx