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Old 06-29-2022, 11:36 AM   #124 (permalink)
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I was thinking of an open bell. I don't recall if butane is lighter or heavier than air. That determines whether the bell points up or down.


I was thinking an open bell for safety's sake; but I now think atmospheric pressure wouldn't be a good test.

So.... maybe a 3/4" clear acrylic tube. threaded on one end for the spark plug with a pop-off valve on the other end?

Maybe I'm watching too much Integza.
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Last edited by freebeard; 06-30-2022 at 12:56 AM..
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