Thread: CVA Electra
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Old January 5, 2008, 11:55 PM   #38
mykeal
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Join Date: October 8, 2006
Location: Northern Michigan
Posts: 2,765
Quote:
The only way I was able to obtain ignition was by allowing the powder to come in contact with the heated electrode which had nothing to do with the electrical current other than that's what made the steel electrode hot enough to light the powder.
Yep. It's heat, not electricity that sets off black powder. Which means that all you need to set off the powder is the presence in the powder of a resistive impurity - one that will heat up when the spark that is freely flowing through the graphite contacts it. Hmmm. Somehow I don't feel safer. I think it's still prudent to take care to prevent static electrical discharges around black powder.

Quote:
is the same true of b/p substitutes,some of which are more volatile than b/p?
Yes, except that their ignition points are significantly higher, thus requiring greater heat buildup.

Last edited by mykeal; January 5, 2008 at 11:57 PM. Reason: Add response to shortwave's question
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