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What are you asking me? First, I would try to keep the time less than 30 and even less than 25, meaning 25 starting the clock at the bottom. I would use 50-90% helium, 10-14% oxygen. I would use 50/50 and oxygen to deco on, and maybe a 35/25 bottle from 120 especially if this were a second dive or multi day diving ( this would shorten my high ppo2 exposure, this is not related to the weenie bullshit about second dives, only the oxygen damage ). Ascent rate is 30 fpm from the bottom consciously stopping at each ten foot increment to be sure to hold the slow rate, and the first deco stop would be at 190, then ten foot increments for 30-40 seconds until you hit the standard curve, then lengthen the gas switch stops and eliminate the ten foot stop and you should have it about right. Very slow ascent from 20 to the surface. The whole deco and ascent would be less than an hour. I personally do that one with about 45 minutes total. If you do the lower part correctly , there is nothing to unwind later up higher. If you do not, like most people do not, then there is no amount of time on oxygen that will stop the damage, but will only make it worse. -----Original Message----- From: Bryon Bertrim [mailto:bryon@be*.co*] Sent: Wednesday, July 04, 2001 2:59 PM To: Trey; techdiver@aquanaut.com Subject: Your way George what is your way to a 250 Ft open water dive for 30 Min BT. I know Deco planner etc BB ----- Original Message ----- From: "Trey" <trey@ne*.co*> To: "Matthias Voss" <mat.voss@t-*.de*> Cc: "Manos Manoli" <cytech@ma*.co*.cy*>; "Tech Diver" <techdiver@aquanaut.com> Sent: Wednesday, July 04, 2001 8:07 AM Subject: RE: 33m Narcosis > > It is great stuff - you lose you abilities and you don't care. "Adaptation" > is like closing one eye when driving drunk. Ask any drunk if he is ok to > drive and see if you can find one that ever says "no". > > -----Original Message----- > From: Matthias Voss [mailto:mat.voss@t-*.de*] > Sent: Wednesday, July 04, 2001 7:40 AM > To: Trey > Cc: Manos Manoli; Tech Diver > Subject: Re: 33m Narcosis > > > Agreed! > So when going down fast, it is the lower order brain functions, like > equilibrium, motion control, that get impaired first, this is monitored > by the higher functions, which then seem to be impaired as well, > ......adaptation. > When going down slowly, the higher functions are affected hand in hand, > so no monitoring. > Though, I have seen amazing inter- and intraindividual adaptations. Not > enough to make a system of it ... > Matthias > > Trey schrieb: > > > > Mathias, you just notice it better when it is fast, as you would notice > the > > buzz if you dropped deep on air real fast. If you go slowly, the higher > > order brain functions will tell you you are OK. > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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