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--_=_=_=IMA.BOUNDARY.HTML_4998384=_=_=_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit John, I copied this post to techdiver for the benefit of anyone following the thread. I have never used Decom, so cannot comment on the profiles it produces, but for any given profile can certainly comment as to the effectiveness of using the correct gases. First off, read and thoroughly understand each of the points listed in the "Baker's Dozen" post. Then, do some reading on decompression theory, specifically the application of the oxygen window for maximizing deco effectiveness. I think this topic is discussed in both David and Elliot's book, and in Weinke's. The toxicity risk created by using oxygen is minor, and is mitigated by the correct application of low PPO2 back gas breaks. Eddie Brian also has posted some good stuff on this. I can't see how using oxygen at 20 fsw imposes any greater risk than using 80/20 at 30 fsw, but I do see a lot of advantages to using the oxygen. Read the literature, then come back and tell us why you disagree. -Sean --Original Message Text--- From: Johnscha@ag*.co* Date: Thu, 19 Jul 2001 12:53:13 -0400 Sean I can only say what works for me. I try to limit my diving to around 200' on a light Trimix of 25% He or less keeping the END at 130' and PO2 1.4 . Total bottom time between 20 - 25 min. I deco using Decon MS Dos 6. something. Deep stops and no 10' stops. Yes, I am on 80/20 from 30'. I add 5 min. at 20' for my age, 55. After 30+ years of flying and diving I have never crashed or drowned myself. What works, works. Thanks John --_=_=_=IMA.BOUNDARY.HTML_4998384=_=_=_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: 7bit <HTML> <FONT FACE="MS Sans Serif" DEFAULT="FACE"><FONT SIZE="1" POINTSIZE="8" DEFAULT="SIZE">John, I copied this post to techdiver for the benefit of anyone following the thread. I have never used Decom, so cannot comment on the profiles it produces, but for any given profile can certainly comment as to the effectiveness of using the correct gases. First off, read and thoroughly understand each of the points listed in the "Baker's Dozen" post. Then, do some reading on decompression theory, specifically the application of the oxygen window for maximizing deco effectiveness. I think this topic is discussed in both David and Elliot's book, and in Weinke's. The toxicity risk created by using oxygen is minor, and is mitigated by the correct application of low PPO2 back gas breaks. Eddie Brian also has posted some good stuff on this.<BR> <BR> I can't see how using oxygen at 20 fsw imposes any greater risk than using 80/20 at 30 fsw, but I do see a lot of advantages to using the oxygen. Read the literature, then come back and tell us why you disagree.<BR> <BR> -Sean<BR> <BR> <BR> --Original Message Text---<BR> <B>From:</B> Johnscha@ag*.co*<BR> <B>Date:</B> Thu, 19 Jul 2001 12:53:13 -0400<BR> <BR> <FONT COLOR=0000ff><FONT SIZE="2" POINTSIZE="10">Sean<FONT COLOR=000000 DEFAULT="COLOR"><FONT SIZE="1" POINTSIZE="8" DEFAULT="SIZE"><BR> <FONT COLOR=0000ff><FONT FACE="Arial"><FONT SIZE="2" POINTSIZE="10">I can only say what works for me. I try to limit my diving to around 200' on a light Trimix of 25% He or less keeping the END at 130' and PO2 1.4 . Total bottom time between 20 - 25 min. I deco using Decon MS Dos 6. something. Deep stops and no 10' stops. Yes, I am on 80/20 from 30'. I add 5 min. at 20' for my age, 55. After 30+ years of flying and diving I have never crashed or drowned myself. What works, works.<FONT COLOR=000000 DEFAULT="COLOR"><FONT FACE="MS Sans Serif" DEFAULT="FACE"><FONT SIZE="1" POINTSIZE="8" DEFAULT="SIZE"><BR> <FONT COLOR=0000ff><FONT FACE="Arial"><FONT SIZE="2" POINTSIZE="10">Thanks<FONT COLOR=000000 DEFAULT="COLOR"><FONT FACE="MS Sans Serif" DEFAULT="FACE"><FONT SIZE="1" POINTSIZE="8" DEFAULT="SIZE"><BR> <FONT COLOR=0000ff><FONT FACE="Arial"><FONT SIZE="2" POINTSIZE="10">John <FONT COLOR=000000 DEFAULT="COLOR"><FONT FACE="MS Sans Serif" DEFAULT="FACE"><FONT SIZE="1" POINTSIZE="8" DEFAULT="SIZE"><BR> <BR> <BR> </HTML> --_=_=_=IMA.BOUNDARY.HTML_4998384=_=_=_-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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