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George,
Karla's example was for deco on 50%. Your changes give 8 at 20' and
nothing at 10'. Is that for 50% also, or are you assuming O2? If it is
50% why no stop at 10'?
Ian
-----Original Message-----
From: George Irvine [mailto:girvine@be*.ne*]
Sent: Saturday, February 16, 2002 2:43 AM
To: Dogtrner1@ao*.co*; trey@ne*.co*; techdiver@aquanaut.com
Subject: RE: Standard Deco Dive
I would make the following changes: slower decent, then after 20 at the
bottom, ascent at 30 fpm, consciously stopping every ten feet to achieve
this, then stop at 120-80 for 30 seconds each.
At 70, the gas switch, I would do 3 minutes to get the full effect of
the switch. See the post that talks about circulation time.
The 3 minutes each at 60,50,40
5 at30
8 at 20
ascend to 0 in 3 minutes
I notice you make a comment about the line. Get in the habit of
consciously stopping every ten feet to insure the proper ascent rate.
Coming up from depth too fast is what gives you the subclinical symptoms
hours after the dive. You trap gas in poorly perfused areas and these
later swell and react, the bubbles in them grow, the reaction presses on
nerves, and you get things like numbness in some extremities while you
are sleeping that night - not a cns hit, a cns manifestation. Skin bends
would be a more obvious consequence of skipping deep stops.
-----Original Message-----
From: Dogtrner1@ao*.co* [mailto:Dogtrner1@ao*.co*]
Sent: Friday, February 15, 2002 7:22 PM
To: trey@ne*.co*; techdiver@aquanaut.com
Subject: Re: Standard Deco Dive
I'll bite on this one.
My typical dive is to 165ft. 20 minutes bottom time. I use a 35/20
helium mix.
My deco is on 50% starting at 70 ft.
I do a 1 minute stop at 100 (run time is 22 minutes)
1 minute at 70, while switching gas.(run time is 24 minutes)
1@ 60(run time is 25 minutes)
1@ 50(run time is 26 minutes)
2 @40(run time is 28 minutes)
4 @ 30(run time is 32 minutes)
7 @ 20(run time is 39 minutes)
18 @10(run time is 57 minutes)
I observe coming up the line slowly, hand over hand. Probably about 30
ft per minute.
Karla
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>George,<o:p></o:p></span></font
></p>=
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font>
</p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Karla’s example was for deco =
on 50%.
Your changes give 8 at 20’ and nothing at 10’. Is that for =
50%
also, or are you assuming O2? If it is 50% why no stop at =
10’?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font>
</p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Ian<o:p></o:p></span></font><
;/p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font>
</p>
<div style=3D'border:none;border-left:solid blue 1.5pt;padding:0in 0in =
0in 4.0pt'>
<p class=3DMsoNormal><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma'>-----Original Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> George Irvine
[mailto:girvine@be*.ne*] <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Saturday,
February =
16, 2002
2:43 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b>
Dogtrner1@ao*.co*;
trey@ne*.co*; techdiver@aquanaut.com<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> RE:
Standard =
Deco Dive</span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>I would make the following changes: =
slower
decent, then after 20 at the bottom, ascent at 30 fpm, consciously =
stopping
every ten feet to achieve this, then stop at 120-80 for 30 seconds each. =
</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>At 70, the gas switch, I would do 3
minutes to get the full effect of the switch. See the post that talks =
about
circulation time.</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>The 3 minutes each at =
60,50,40</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>5
at30</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>8 at =
20</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>ascend to 0 in 3 =
minutes</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:blue'>I notice you make a comment about =
the
line. Get in the habit of consciously stopping every ten feet to insure =
the proper
ascent rate. Coming up from depth too fast is what gives you the =
subclinical
symptoms hours after the dive. You trap gas in poorly perfused areas and =
these
later swell and react, the bubbles in them grow, the reaction presses on
nerves, and you get things like numbness in some extremities while you =
are
sleeping that night - not a cns hit, a cns manifestation. Skin bends =
would be a
more obvious consequence of skipping deep =
stops.</span></font><o:p></o:p></p>
</div>
<blockquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b>
Dogtrner1@ao*.co*
[mailto:Dogtrner1@ao*.co*]<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday,
February =
15, 2002
7:22 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> trey@ne*.co*;
techdiver@aquanaut.com<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re:
Standard =
Deco Dive</span></font><o:p></o:p></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I'll bite on this one. <br>
<br>
My typical dive is to 165ft. 20 minutes bottom time. I use a =
35/20
helium mix. <br>
<br>
My deco is on 50% starting at 70 ft. <br>
<br>
I do a 1 minute stop at 100 (run time is 22 minutes) <br>
1 minute at 70, while switching gas.(run time is 24 minutes) <br>
1@ 60(run time is 25 minutes) <br>
1@ 50(run time is 26 minutes) <br>
2 @40(run time is 28 minutes) <br>
4 @ 30(run time is 32 minutes) <br>
7 @ 20(run time is 39 minutes) <br>
18 @10(run time is 57 minutes) <br>
<br>
I observe coming up the line slowly, hand over hand. Probably =
about 30 ft
per minute. <br>
<br>
Karla</span></font><font face=3DArial><span
style=3D'font-family:Arial'> =
</span></font><o:p></o:p></p>
</blockquote>
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