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On 10/08/2012 10:06 PM, David Leonard wrote:
Hi Earnest,
I like were you are going with the idea of a heat sink, but I am not sure that I could come up with a better design for a spark plug. After all, it is a miracle that we have a substance that has high thermal conducitivity with very low electrical conductivity and is also strong enough to stand up to combustion pressures. A lot of smart people have put a lot of time an effort into spark plug design and I am pretty sure I wouldn't be able to improve on it. Besides, that is the whole point of using a colder plug, it is kinda like having a heat sink.
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The colder plug works by resisting the absorbtion of heat more. The idea of the heat sink is to dump the absorbed heat faster. I envisioned a strip of aluminum wrapped around the porcelain, and maybe removing the siicone boot from the plug wire. Of course, if the colder plug will last like a normal one, so that you very rarely have to replace them, the point is kind of moot.
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