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From: "Dave VanHorn"
Subject: Re: Computer Controlled Pyrotechnic Firing Panel
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NNTP-Posting-Date: Wed, 18 Sep 2002 09:58:45 CDT
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Date: Wed, 18 Sep 2002 14:58:45 GMT
> You won't use ematches and you have never seen specs on them except
> that the specs are listed on the box - at least for DaveyFires.
They weren't when I last looked at thiem. It's been a while.
Maybe time to re-evaluate.
> Instead, you use spark sensitive thermolite with an unspecified
Yes. Not much ESD problem in Indiana summers. It's a rare day with humidity
Teflon sleeving above the ignitor, with a fold-back at the top of the core.
> OK, did I parse that correctly?
> Hmm... From my experience, ematches are much more reliable for
> electric ignition without the hazards of the spark sensitivity of the
> thermolite. Thermolite is used for "gathering fire" as a crossmatch in
> a shell because it catches fire very easily.
Putting a few amps through the internal wires in the Thermalite results in a
nice reliable ignition, and it's very unlikely to be set off by anything
other than my ignition relay closing.
> Using a flash bulb is a kludge because the person either can't get or
> won't spend the money forematches,
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