Read and Learn......

Drmike · 19th January 2007, 08:58

Quote: (Originally Posted by Decodiver)

This is so true, I was asked awhile back by someone what I considered to be a deep dive.

One where if you stand up your head is not above the surface, was my reply.

We ain't supposed to be there, it ain't our environment.

Please lets all take care and have a 2007 without fatalities, that is my wish for this year & of course rich & welath to you all too.

I am much more scared by shallow dives on a Rebreather than deep ones.

On the deep ones you spend say 20 mins working where you can be distracted the vast majority of the time you spend on deco doing nothing with nothing to distract you. On shallow dives its the other way around - lots of time on the bottom with things to distract and faster dropping PPO2.

I wont do a pool session without someone looking over me - but Im happy to dive to 200m+ solo and thats no BS

decoweenie · 19th January 2007, 11:25

Quote: (Originally Posted by silent running)

...despite the PO2 spike/rapid descent possibility...

Andy,

I think we are

but I have only 1 comment regarding your PO2 spike/rapid descent comment...

I have scootered straight down as fast as I could equalize, and not spiked the PO2. I can't explain why you are spiking your PO2 when you descend since we have never dived together, but it is NOT a given relationship between spiking PO2 and descent rate since there are other variables involved.

Anyway, what works for you, works for you.

So I will agree to disagree here about pre-breathing as the unit functional test...

silent running · 19th January 2007, 16:42

Quote: (Originally Posted by decoweenie)

I can't explain why you are spiking your PO2 when you descend since we have never dived together, but it is NOT a given relationship between spiking PO2 and descent rate since there are other variables involved.

Phi yes you're right. I didn't mean to suggest that ot always does with a rapid descent. And just to be clear, my PO2 usually doesn't spike unless I either stop for a minute or 2 during the descent, or were to start out with a bunch O2 in the loop before getting in...

Dave Young · 24th January 2007, 08:43

Quote: (Originally Posted by PeteS)

Well Guys, At last I have closure, I hope the others involved will find the same from this.

CDNN :: Diver Error Cause of Rebreather Scuba Diving Fatality

Cheers for posting this Pete. It has felt like an eternity waiting for the Coroner to hold the inquest, and to finally get the findings out into the rebreather community is like a breath of fresh air.

For once, a newspaper has reported the facts correctly and we all have the chance to reflect on the findings.

Dive safe everyone, and "Always know your ppO2".

Dave Young

PeteS · 3rd February 2007, 02:45

Quote: (Originally Posted by decoweenie)

... but how is the quality of life as a cynic going thru life afraid of everything ?

Unlike Optimists, Cynics are never shocked when it all goes tits up, but pleasantly suprised when it all works.

19th January 2007, 08:58	#71 (permalink)
Drmike Custom Title Allowed! Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,303	Re: Read and Learn...... Quote: (Originally Posted by Decodiver) This is so true, I was asked awhile back by someone what I considered to be a deep dive. One where if you stand up your head is not above the surface, was my reply. We ain't supposed to be there, it ain't our environment. Please lets all take care and have a 2007 without fatalities, that is my wish for this year & of course rich & welath to you all too. I am much more scared by shallow dives on a Rebreather than deep ones. On the deep ones you spend say 20 mins working where you can be distracted the vast majority of the time you spend on deco doing nothing with nothing to distract you. On shallow dives its the other way around - lots of time on the bottom with things to distract and faster dropping PPO2. I wont do a pool session without someone looking over me - but Im happy to dive to 200m+ solo and thats no BS __________________ Cave diving is a sport Wreck diving is a sport Diving in general is a sport 'Rebreather diving' is not a sport its the delusional obsession with a highly dangerous and often inappropriate piece of equipment
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19th January 2007, 11:25	#72 (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: Read and Learn...... Quote: (Originally Posted by silent running) ...despite the PO2 spike/rapid descent possibility... Andy, I think we are but I have only 1 comment regarding your PO2 spike/rapid descent comment... I have scootered straight down as fast as I could equalize, and not spiked the PO2. I can't explain why you are spiking your PO2 when you descend since we have never dived together, but it is NOT a given relationship between spiking PO2 and descent rate since there are other variables involved. Anyway, what works for you, works for you. So I will agree to disagree here about pre-breathing as the unit functional test... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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19th January 2007, 16:42	#73 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,836	Re: Read and Learn...... Quote: (Originally Posted by decoweenie) I can't explain why you are spiking your PO2 when you descend since we have never dived together, but it is NOT a given relationship between spiking PO2 and descent rate since there are other variables involved. Phi yes you're right. I didn't mean to suggest that ot always does with a rapid descent. And just to be clear, my PO2 usually doesn't spike unless I either stop for a minute or 2 during the descent, or were to start out with a bunch O2 in the loop before getting in...
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24th January 2007, 08:43	#74 (permalink)
Dave Young Scottish Kiwi Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Inspiration Vision Evolution Other CCR Join Date: Jun 2005 Location: New Zealand Posts: 23	Re: Read and Learn...... Quote: (Originally Posted by PeteS) Well Guys, At last I have closure, I hope the others involved will find the same from this. CDNN :: Diver Error Cause of Rebreather Scuba Diving Fatality Cheers for posting this Pete. It has felt like an eternity waiting for the Coroner to hold the inquest, and to finally get the findings out into the rebreather community is like a breath of fresh air. For once, a newspaper has reported the facts correctly and we all have the chance to reflect on the findings. Dive safe everyone, and "Always know your ppO2". Dave Young __________________ My rebreather blog: http://dcyccr.blogspot.com/
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3rd February 2007, 02:45	#75 (permalink)
PeteS Consent Issued! Current Rebreather/s: Inspiration Classic Inspiration Vision Other Rebreather/s: Join Date: Jun 2005 Location: New Zealand Posts: 532	Re: Read and Learn...... Quote: (Originally Posted by decoweenie) ... but how is the quality of life as a cynic going thru life afraid of everything ? Unlike Optimists, Cynics are never shocked when it all goes tits up, but pleasantly suprised when it all works. __________________ Pete S. http://www.steggle.co.nz Every silver lining has a cloud
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