Re: Awright, McGiver types

On Tue, 4 Dec 2007 20:54:19 -0800, "SteveB"
<deserttraveler@xxxxxxxxxxxxx> wrote:

I want to send a 95/5 percent mix of 02 and propane down a tube underground
into gopher burrows. I will have a piezo sparker at the end of the tube
back a bit so it doesn't get plugged up with dirt. Perhaps inside a phallus
shaped protective head with many drilled holes. I'm thinking of something
flexible for the hose. Inside that, I have to run the two wires to the
piezo. I might be able to run one, and use the hose as a ground if it is
made of metal, like a smog sensor hose. Piezos on barbecues have one wire.

My question is: Is there wire that has coatings that are resistant to high
temperatures? I know there are lots of such wires in stoves, but most I
have seen look ratty from use. There would be a flash and explosion, but no
terribly high temperatures for a very long period of time, as all the oxygen
would be consumed in the explosion.

What would such wire be called, and where do I get some?

Thanks. My Gopher Getter is moving along now that I'm getting some of these
other projects out of the pipeline. I hope to be ready by gopher time in
spring.

Steve

I'd put a flame suppressor near the bottom. A Davy miner's lamp uses
wire gauze, you might need something more substantial like a steel
disc with a lot of small holes drilled in it. Flame won't propagate
past such a structure, and it'll also attenuate a pressure pulse.
Keeping the boom out of your tube might be a good thing.

I'd then use a ceramic insulator with a thru electrode to introduce
spark on the other side of the flame suppressor. McGiver solution: a
sparkplug.

There are also kanthal rods with ceramic insulators used as spark
furnace ignitors. Check with an HVAC supply place. Honeywell and
others make them. They have considerably longer electrodes than a
sparkplug.


.

Relevant Pages

  • Re: Awright, McGiver types
    ... I will have a piezo sparker at the end of the tube ... Piezos on barbecues have one wire. ... My Gopher Getter is moving along now that I'm getting some of these ...
    (rec.crafts.metalworking)
  • Re: Awright, McGiver types
    ... I will have a piezo sparker at the end of the tube ... Piezos on barbecues have one wire. ... There would be a flash and explosion, ... My Gopher Getter is moving along now that I'm getting some of these ...
    (rec.crafts.metalworking)
  • Awright, McGiver types
    ... I want to send a 95/5 percent mix of 02 and propane down a tube underground ... I will have a piezo sparker at the end of the tube ... Piezos on barbecues have one wire. ... My Gopher Getter is moving along now that I'm getting some of these ...
    (rec.crafts.metalworking)
  • Re: Awright, McGiver types
    ... I will have a piezo sparker at the end of the tube ... I might be able to run one, and use the hose as a ground if it is ... Piezos on barbecues have one wire. ... My Gopher Getter is moving along now that I'm getting some of these ...
    (rec.crafts.metalworking)
  • Re: Awright, McGiver types
    ... underground into gopher burrows. ... I will have a piezo sparker at the end ... thinking of something flexible for the hose. ... Is there wire that has coatings that are resistant to ...
    (rec.crafts.metalworking)
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