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Josh Trimix is simple. All you are doing is replacing nitrogen with helium. Other than that you can treat it like nitrox, or using a normoxic trimix (21% oxygen) you can use it like air, even use no-stop tables. No too much to it. For example you could create a mix of 21%02, 21%He, 58%N2, this would give you at 160ft depth an END (equivalent nitrogen depth) of 109, and a max P02 of 1.2. At 130 ft. a END of 87ft. Where it gets difficult is when your goal is to maximize your bottom time and minimize your decompression time. The hard part is gas management where you are carrying multiple bottles of different mixes with different MODs (Maximum Operating Depth). You can kill yourself deader than a doornail by fucking up this part of the dive. This is where being narced and goofy gear configs have done-in many a fine diver, in spite of what all the deepair assholes say. You can avoid this by not going too deep, avoid doing long bottom times at depth and not doing staged decompression. Get a scooter. I would recommend reading anything you can get your hands on. Back issues of tech magazines, definitely Tech and Cave archives, dive medicine books. Find a good instructor on self rescue, staging and gas managment who won't torture you with the deepair bullshit. Just understand that this is a dangerous sport that you don't want to stumble half-assed into. You need to be absolutely comfortable with the underwater environment under all conditions. You have to have a high degree of self discipline so you know when to turn, or even to call the dive no matter how much trouble you went through to get to the site. Self preservation should be a knee-jerk reaction. Don't fuck it up for the rest of us. Jim On 10/9/97 8:55 AM jtshepherd1@mm*.co* wrote: >Jim, I am trying to learn as much as I can about breathing tri-mix >because I definately want to avoid deep-air........(snip) -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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