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This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C1B634.3F444D40 Content-Type: text/plain; charset="iso-8859-1" George, Great info, keep it coming. In a recent post you said: -------- For shorter dives, the deco gases are added from the top down. In other words, your shortest dive might have just oxygen as the only different deco gas. A longer dive of the same profile may add the 50% gas. Still longer times would add the 35% gas and so forth. You weigh the advantage of the gas to the problem of carrying it. The effective shortening of the deco is not in play here because a shorter dive hits the minimum deco rules, so yo have to do the time anyway. Longer dives demand the extra gases to stay efficient. Toggling and alternating are key to decompression. There is no way you can beat this by maintaining a high ppo2 . ----------- On short small dives when you want to keep logistics simple and carry one stage, which deco gas is prefered, the O2 or the 50%? On these kinds of dives I have carried the 50% and I have achieved good results so far. However, you say it is better to add deco gas from the top down, so I believe I have missed an important point in the deco theory you are trying to impart. My reasoning for the 50% is that you start the toggling deeper and can take advantage of the oxygen window sooner which clears the slate alot more before you get twoards the end of your deco. As you get shallower you then rely more on the gradient to clean your system. If O2 is the correct gas for these kinds of dives then my logic is wrong, why wait till the very end to start with the oxygen window? Can you comment on this? Again, great info, I for one really appreciate WKPP pioneering all this and making it available to the masses. We are all better and safer for it. Thanks Paul ------_=_NextPart_001_01C1B634.3F444D40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Diso-8859-1"> <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version = 5.5.2654.89"> <TITLE>Re: DECO</TITLE> </HEAD> <BODY> <P><FONT FACE=3D"Times New Roman">George,</FONT> <BR><FONT FACE=3D"Times New Roman">Great info, keep it coming. In = a recent post you said:</FONT> <BR><FONT FACE=3D"Times New Roman">--------</FONT> <BR><FONT FACE=3D"Times New Roman">For shorter dives, the deco gases = are added from the top down. In other words, your shortest dive might = have just oxygen as the only different deco gas. A longer dive of the = same profile may add the 50% gas. Still longer times would add the 35% = gas and so forth. You weigh the advantage of the gas to the problem of = carrying it. The effective shortening of the deco is not in play here = because a shorter dive hits the minimum deco rules, so yo have to do = the time anyway. Longer dives demand the extra gases to stay efficient. = Toggling and alternating are key to decompression. There is no way you = can beat this by maintaining a high ppo2 . </FONT></P> <P><FONT SIZE=3D2 FACE=3D"Arial">-----------</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">On short small dives when you want to = keep logistics simple and carry one stage, which deco gas is prefered, = </FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">the O2 or the 50%? On = these kinds of dives I have carried the 50% and I have achieved good = results so far.</FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">However, you say it is better to add = deco gas from the top down, so I believe I have missed an = important</FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">point in the deco theory you are = trying to impart.</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">My reasoning for the 50% is that you = start the toggling deeper and can take advantage of the oxygen</FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">window sooner which clears the slate = alot more before you get twoards the end of your = deco. </FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">As you get shallower you then rely = more on the gradient to clean your system. If = O2 is the</FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">correct gas for these kinds of dives = then my logic is wrong, why wait till the very end to start with = </FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">the oxygen window? Can you = comment on this?</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">Again, great info, I for one really = appreciate WKPP pioneering all this and making it available to = the</FONT> <BR><FONT SIZE=3D2 FACE=3D"Arial">masses. We are all better = and safer for it.</FONT> </P> <P><FONT SIZE=3D2 FACE=3D"Arial">Thanks</FONT> </P> <BR> <P><FONT SIZE=3D2 FACE=3D"Arial">Paul</FONT> </P> <BR> <BR> </BODY> </HTML> ------_=_NextPart_001_01C1B634.3F444D40-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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