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In message "Re: Back mounts and manifolds (was:Re: regulator hoses)", > > Douglas Stetner writes: > >This is only valid if you switch regs every 5 minutes so that your > >independent tanks have equal amounts of air in them. If you breathe > >one down first, switch to the other and then have a second or first > >stage fail, you are left with a near empty tank and a rapidly emptying > >tank. > > My understanding of the philosophy of independent tanks, from my cave > diving background, is that you ensure that each has enough air to get > you to safety (where safety is sump pool/ocean surface/stage tanks/deco > tanks/whatever) if you lose one. So you shouldn't be in such a situation > with a near empty tank, surely? This is true, but from recent posts (person finding second tank dead and then bending), it seems people are not doing this! I guess if you switch at the prescribed intervals the point is moot, but I personnaly prefer not to switch (I am not saying that I do not test the other regulator at points in the dive) and to have access to all my remaining air if possible. Doug ----------------------------------------------------------------------------- Douglas G. Stetner | A.C.U.C. | (042) 24-2855 (work) Senior Unix Support Eng. | Dive Master #1018 | (042) 24-2801 (FAX) stetner@bn*.ca* | Wreck Penetration #063 | (042) 85-4379 (home) My opinions are my own. | Adv. Scuba Rescue #054 | Wollongong, Australia
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