Grid spark chamber

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huse_spud
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Sun Apr 23, 2006 8:16 pm

What if you could cover the inside of a combustion chamber with a metallic paint and then etch a grid design or something into the paint? sparks would be jumping every gap and would make it possible for the whole chamber to spark!
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zvallance1
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Sun Apr 23, 2006 8:24 pm

Good thinking, what you just described is essentially a large-scale spark strip, which we all know to be one of the most effective means of ignition in a combustion or a hybrid.

I believe that someone on this site did something similar to what you're thinking of, already...He took an old CD and scratched it real well, with a nice sharp knife... Then he hooked up a BBQ sparker to opposite ends of the CD and when he clicked (<--insert better word there) the sparker, he got ~25 or so sparks.

Great idea for using in on the entire chamber though, try it, and let us know how it turns out!
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Atlantis
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Sun Apr 23, 2006 8:40 pm

I tired that with allumin foil, but it's too hard to get the foil in there. It might work with metallic paint though. Try turning you entire chamber into a layden jar, and then reroute it into a spark. Look it up.
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beebs111
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Sun Apr 23, 2006 9:06 pm

the guys from burntlatke had sparkstrip ideas, one of witch was a ton of metal shavings around the inside of the chamberwith electrodes on opposite diagionals to eachother. this makes the sparks jump very very small sparks, and get from one side from another. the last time i checked this was only an idea without pictures, but this description should help :wink:
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WOW!!
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Sun Apr 23, 2006 10:05 pm

Atlantis wrote:I tired that with allumin foil, but it's too hard to get the foil in there. It might work with metallic paint though. Try turning you entire chamber into a layden jar, and then reroute it into a spark. Look it up.
SPray the back of it with some glue and stick to the inside in 3 or 4 smaller pesies.
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spudshot
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Mon Apr 24, 2006 3:48 pm

i believe aturner on spudtech tried this to some success
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FiveseveN
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Mon Apr 24, 2006 10:50 pm

Won't a hundred tiny sparks actually be less reliable then two big ones? It seems to me that you'd be better off adding a chamber fan for better mixing.
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sgort87
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Wed Apr 26, 2006 1:28 am

A 100 tiny sparks may be okay for ignition but it sounds unreliable to me. I have found that sparks from a BBQ ignitor that are less than 1/8" rarely ever ignite.

Stick with 2 sparks maximum and you will be fine but good thinking.
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