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You wrote: > >>Tom Mount wrote: >> >> Rodney >> You are quite wrong Drx is one of the most widely used software >> programs around with an outstanding safety record. It is conservative >> enough for most. > >I thought I made reasons clear, but again, DRX safety factors >are are the problem, not the program. It is just a buhlmann, >as are all the rest. > >If you set 20% safety on a trimix dive you get 0 safety >for nitrogen, and 20 for helium. The outstanding safety record >is due to the 0% safety still being a buhlmann table. That is true Rodney, I was objecting to the statement that it was a peice of crap. TM >Remember Sheck ran a trimix course, using DRX, and both his students >got bent. 2 out of 2 ain't bad. Sheck dove air and was fine. Sheck ran numerous trimix classes and in one class two students did get bent suppossendly, With out of all the students he had and all the divers who have used the program, I would suspect that a 2 out of 2 would indicate a high probability of misuse of the program TM >> >> On helium as a friendly gas, it does off gas quickly but that produces >> a goods effect provided you do not lose your deco stages and a bad >> effect if you do lose the deco stages. A simple 300 foot 30 minutes >> dives can go from a run time of a reasonable duration to over 3,000 >> minutes of deco. > >Really? No shit. >I was mainly refering to helium being freindly due to >all the damage high PPN2 does to your body, and that >helium bends are less likely to affect the CNS, >and by all accounts respond better to prompt treatment. >> I have treated helium bends they like other bends are not always so simple. Tom Mount >> Sheck used a 20% and deeper than 300 no safety factor and on long dives >> no safety factor. I do not recall him ever having a problem using the >> program. >> > >What about those 2 students who got bent. Again I would be suspect of not using the program correctly based on all the safe dives mde on it. Tom Mount > >I personnally would use DRX on 0%, it's when you want >a safety factor that it is a piece of crap. > >Rod Nairne. > >Rod Nairne wrote: >> > >> >DRX is a piece of crap for trimix dives. >> > >> >100% safety gives 100 for helium but 0 for >> >nitrogen. >> > >> >Sheck was clearly more concerned with the helium, >> >but helium is the diver freindly gas, not nitrogen. >> > >> >Buy/use another program. >> > >> >If you are fit, you should have no problem >> >with a straight buhlmann. >> > >> >Rod. >> >-- >> > > >-- > >
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