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> Richie, no offense, but the silliness about rebreathers on sooters is a laugh, > and I do not explect you to know that. Whatever. > If you can tell me which 1/60th to look > at the machine over the dive, I will dive it to the moon - that is the problem , > Tough Guy - turn your head and you are dead , like Gavin. We have the thirds > rule, and now I have the 1/60 rule. Either you completely missed the boat on this one, or you are just baiting me. The irony is incredible. On the one hand, you trust your knowledge of your own metabolism to do extreme OC dives without ever looking at your pressure gauge, or dive with a rebreather with no sensors. On the other hand, you seem to think that, if the PO2 in a breathing loop is fine one moment, you might be dead the next moment. See, here's the way it works: It takes me 30-45 minutes to breathe down a loop full of 1.4 PO2 to reach 0.5 PO2 - without any addition of O2. If the O2 in the loop goes anywhere other than my body, I'm going to know about it right away. That means that if I can confirm the PO2 really is 1.4 at any moment during the dive (which I can do in a 15-second procedure), then I know that I will be fine for the next 30-45 minutes. At a high work load, that would be more like 20-30 minutes. At a VERY high workload, that might be 10-15 minutes. Like you, I am usually catatonic throughout the dive - which means I'm in the 30-45 minute range. In such cases, I check to make sure the PO2 is 1.4 every 15 minutes, which leaves me plenty of margin for error in the event the solenoid decided to stop injecting O2. If I ever find myself pumping an excercise bike wearing a rebreather, I'll check it every 5 minutes. Of course, the other risk is too much oxygen. In order for that to happen, the solenoid would have to keep pumping it in, which would be incredibly obvious very quickly. So, in answer to your question - the important 1/60th of your dive is the 15-second window that comes around about every 15 minutes. > Rich, I do not play Russion Roulette with ANY bullets in my gun, not even one > in sixty. - G Stop a minute and think about how stupid that last comment really is. Rich
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