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Rich Said: The fundamental barrier to rebreathers for the masses >is that the killers (too much O2, too little O2) are insideous - i.e., not >self-evident. Lights out comes with no obvious forewarning (jury is still >out on the CO2 issues). With SCUBA, pretty much any of the real killers >(except a bad fill, or pilot error in grabbing the wrong reg at the wrong >depth) are self-evident - you have some warning before you go under. >With rebreathers, you need to stay on top of the O2 in the loop. That's >why I keep hammering on the "D" word (discipline). Given the discipline, >I think you are absolutely right on the fact that with CC, you tend to >have multiple options to solve problems, and that you have several >minutes to several hours of "margin for error" time to work out the best >solution. Absolutely right, dude. Another thing for the manufacturers/instructors to worry about. What I'm wondering, is why the manufacturers havent put those annoying "beepers" in their rigs, the would warn you about hi/low O2, low battery, and sensor failure. I've become so used to looking at the Primary every couple of minutes, and the Secondary every ten minutes or so that it is rooted in my rebreather "discipline" - I could just imagine some Gomer with his new rebreather, getting all excited about some soft coral, that he forgets to check his O2 - he installed his brother, Goober's, dead battery, so now he aint got no O2. The last thing he sees before Elvis greets him in the Great Beyond, is this looong dark tunnel... I know you can't engineer these things for the Gomers of the world, but maybe a beeper (that one could turn off) would be nice. Now, you're going to tell me that your Cis has that already, and it bakes bread in the center section while you dive... Kevin HeyyDude
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