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I've never tried banging the tank on the ground, but an empty tank will resonate a "ring" with each breath. The sound is different from the ring of a full tank (the full tank sounds more muffled - I don't think the tone is much different, just the "resonance"). I notice the ring when I'm down to about 500psi, which is long before any breathing resistance kicks in. Aloha, Rich On Wed, 7 Aug 1996, JCG wrote: > This business of taking an empty tank down reminds > me of a trick Bruce Bowker taught me down on Bonaire > a few years back. This works well if you have a > bunch of tanks of identical construction and size. > If you hold the each tank by the valve and strike > the bottom on the floor, you can hear which ones > are full or empty by the sound produced. > > Now, for the benefit of any red-neck, bone-smuggling, > pony-petting strokes who might be reading this > list, I am opening the floor to debate: > does a full tank make a higher or lower tone when > struck than an empty one? > > Inquiring minds want to know. > > --JCG > -- > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. > Richard Pyle deepreef@bi*.bi*.ha*.or* ******************************************************************* "WHATEVER happens to you when you willingly go underwater is COMPLETELY and ENTIRELY your own responsibility! If you cannot accept this responsibility, stay out of the water!" *******************************************************************
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