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At 10:07 AM 7/25/00 -0700, Michael J. Black wrote: >As for better systems, mine works well and is quite simple: no dives >below 220 feet, using a large primary, a 30cf (or 40cf) pony, and >40cf sling bottle(s) if needed. No doubles, and no dives that require >more than 45 minutes of deco (too boring with nothing to look at but >your buddy). A fine selection of wrecks to look at in the Great Lakes >with this system. Plus I dive from my own boat, and the captain is >always right. Boating is as much of a hobby to me as diving, just >lots more expensive. OK, now we're talking diving and that's a major improvement for all of us. From previous posts I assume that the contents of your large primary is air. That may be fine down to 130' yet not so fine at 220'. How about some helium? I used to think that I was OK diving air to 250'. I felt swell but then I realized that stemmed from being numb. Too numb to switch regs -- too numb to respond to an emergency. Deep air is easy as long as nothing unforeseen happens -- you just float around and feel great. Redundancy: What do you do if you lose access to that single gas supply? Is there some sort of buddy assistance or are you all on your own? 45 minutes of deco is quite substantial -- especially if you blow it. Have you got what it takes to bail out? Consider the "what ifs" and tell us how you would solve a free-flow or a reg malfunctioning at 200'. I know you have wrecks in pristine condition and I'd like to visit them some day! regards, Hans -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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