Head down on deco =14% faster off gasing

Mark Chase · 5th December 2007, 21:05

Rubicon Research Repository: Item 123456789/5050

This is interesting? Dont think ill be cutting deco down but maybe those buggers over at GUE were right all along

ATB

Mark

CCR-Wrecker · 5th December 2007, 21:52

I am OUTRAGED at your posting. How very irresponsible you are!

At what? you ask..... a staged deco dive with no bailout. As a wise man said years ago " a picture is worth a 1000 words"
Shame shame

Mark Chase · 5th December 2007, 22:15

Quote: (Originally Posted by CCR-Wrecker)

I am OUTRAGED at your posting. How very irresponsible you are!

At what? you ask..... a staged deco dive with no bailout. As a wise man said years ago " a picture is worth a 1000 words"
Shame shame

When i am trying to get a laugh I go for Alpinist every time

ATB

Mark

chunter · 6th December 2007, 01:29

No wonder I get bent every time I dive...I've been looking at the bottom during the dive and looking at the surface on deco. I should do things the other way round.

Gilles · 6th December 2007, 03:26

That gave me a laugh

, and you a blob

Rare bit of self depracation. I think we can do with a bit more of that.

***caveseeker7*** · 6th December 2007, 07:12

Bitch to vent the suit though, ain't it.

decoweenie · 6th December 2007, 08:15

Quote: (Originally Posted by caveseeker7)

Bitch to vent the suit though, ain't it.

There was a drysuit with vent at the ankles, can't remember the model/brand (Whites ?)

**PhilSiswick** · 6th December 2007, 08:29

Quote: (Originally Posted by decoweenie)

There was a drysuit with vent at the ankles, can't remember the model/brand (Whites ?)

Ah yes, I think it was. One of those things that seemed a very important add-on to me until I actually went diving in a drysuit for the first time

Did anyone ever actually use them?

Cheers,

***caveseeker7*** · 6th December 2007, 08:53

Quote: (Originally Posted by decoweenie)

There was a drysuit with vent at the ankles, can't remember the model/brand (Whites ?)

Apollo.

Simon Mitchell · 14th December 2007, 09:58

Quote: (Originally Posted by Mark Chase)

Rubicon Research Repository: Item 123456789/5050

This is interesting? Dont think ill be cutting deco down but maybe those buggers over at GUE were right all along

Hello Mark,

I don't think you can read much into this with respect to diving. The experiment was conducted dry. The centralisation of blood volume that is achieved with the head down position in a dry subject is already achieved by peripheral vasoconstriction and loss of gravitational effect in an immersed subject, no matter what position they are in - head up, head down, sideways etc. This is not to detract from the importance of their findings for dry subjects about to escape from a submarine, about to embark on a space walk or in a couple of other contexts I can think of. However, there is probably no relevance to divers.

Warm regards,

Simon Mitchell

5th December 2007, 21:05	#1 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,418	Head down on deco =14% faster off gasing Rubicon Research Repository: Item 123456789/5050 This is interesting? Dont think ill be cutting deco down but maybe those buggers over at GUE were right all along ATB Mark __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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5th December 2007, 21:52	#2 (permalink)
CCR-Wrecker Classic KISSer #276 Current Rebreather/s: Inspiration Classic Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Apr 2005 Location: New York Posts: 198	Re: Head down on deco =14% faster off gasing I am OUTRAGED at your posting. How very irresponsible you are! At what? you ask..... a staged deco dive with no bailout. As a wise man said years ago " a picture is worth a 1000 words" Shame shame __________________ "I know what you'll find, it's in your mind, it's what you want to see..." Ozzy
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5th December 2007, 22:15	#3 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,418	Re: Head down on deco =14% faster off gasing Quote: (Originally Posted by CCR-Wrecker) I am OUTRAGED at your posting. How very irresponsible you are! At what? you ask..... a staged deco dive with no bailout. As a wise man said years ago " a picture is worth a 1000 words" Shame shame When i am trying to get a laugh I go for Alpinist every time ATB Mark __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
(Online)

6th December 2007, 01:29	#4 (permalink)
chunter I like diving Current Rebreather/s: Sport Kiss MK 15.X Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Classic Kiss Join Date: Jul 2006 Location: Honolulu Posts: 455	Re: Head down on deco =14% faster off gasing No wonder I get bent every time I dive...I've been looking at the bottom during the dive and looking at the surface on deco. I should do things the other way round. __________________ "Foolish consistency is the hobgoblin of little minds." - Emerson "Hobgoblin is a cool word." - Charlie
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6th December 2007, 03:26	#5 (permalink)
Gilles Worship the feminine Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Den Haag (Netherlands) Posts: 761	Re: Head down on deco =14% faster off gasing That gave me a laugh , and you a blob Rare bit of self depracation. I think we can do with a bit more of that. __________________ Gilles http://www.dirrebreather.com
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6th December 2007, 07:12	#6 (permalink)
*caveseeker7* Who loves ya, baby Current Rebreather/s: Sport Kiss Other Rebreather/s: Prism Topaz Join Date: Jan 2005 Location: Too far from Neverland Posts: 5,287	Re: Head down on deco =14% faster off gasing Bitch to vent the suit though, ain't it. __________________ Cheers Stefan Be Water, My Friend - Bruce Lee Sponsor Lou in Race For Life!
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6th December 2007, 08:15	#7 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: Head down on deco =14% faster off gasing Quote: (Originally Posted by caveseeker7) Bitch to vent the suit though, ain't it. There was a drysuit with vent at the ankles, can't remember the model/brand (Whites ?)
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6th December 2007, 08:29	#8 (permalink)
PhilSiswick WSKD 0001 Current Rebreather/s: Evolution Other Rebreather/s: Inspiration Vision Join Date: Apr 2006 Location: Oxford, UK Posts: 880	Re: Head down on deco =14% faster off gasing Quote: (Originally Posted by decoweenie) There was a drysuit with vent at the ankles, can't remember the model/brand (Whites ?) Ah yes, I think it was. One of those things that seemed a very important add-on to me until I actually went diving in a drysuit for the first time Did anyone ever actually use them? Cheers, __________________ Phil No comment on open circuit... it's an evolutionary dead end not really worth discussing here. Dave Sutton, 2007 I have always felt that the dive I am on is not nearly important as the dives I plan to be on the rest of my life. Tom Rose, 2007 www.hugsac.org.uk
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6th December 2007, 08:53	#9 (permalink)
*caveseeker7* Who loves ya, baby Current Rebreather/s: Sport Kiss Other Rebreather/s: Prism Topaz Join Date: Jan 2005 Location: Too far from Neverland Posts: 5,287	Re: Head down on deco =14% faster off gasing Quote: (Originally Posted by decoweenie) There was a drysuit with vent at the ankles, can't remember the model/brand (Whites ?) Apollo. __________________ Cheers Stefan Be Water, My Friend - Bruce Lee Sponsor Lou in Race For Life!
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14th December 2007, 09:58	#10 (permalink)
Simon Mitchell New Member Current Rebreather/s: MK 15.X Other Rebreather/s: Join Date: May 2005 Location: New Zealand Posts: 156	Re: Head down on deco =14% faster off gasing Quote: (Originally Posted by Mark Chase) Rubicon Research Repository: Item 123456789/5050 This is interesting? Dont think ill be cutting deco down but maybe those buggers over at GUE were right all along Hello Mark, I don't think you can read much into this with respect to diving. The experiment was conducted dry. The centralisation of blood volume that is achieved with the head down position in a dry subject is already achieved by peripheral vasoconstriction and loss of gravitational effect in an immersed subject, no matter what position they are in - head up, head down, sideways etc. This is not to detract from the importance of their findings for dry subjects about to escape from a submarine, about to embark on a space walk or in a couple of other contexts I can think of. However, there is probably no relevance to divers. Warm regards, Simon Mitchell
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