Optima-deepest dive

Konaquatica · 13th November 2008, 06:51

Paul Heinerth had personally, and completely off-the-record told me of the time he put in on that ExtendAir cartidge on the deep exploration dive in Weeki Wachee. Since I promised him to keep it confidential, I have been biting my tongue when reading the posts by those demeaning the ExtendAirs, almost exclusively by those who have never dove them. Isn't it interesting that those who actually dive them, love them ? Including experienced CCR divers like myself. Regardless, I'm glad Paul has let the cat-out-of-the-bag, by publishing his account on the Dive Rite blog. P.S. Don't try this at home...he was on deco in 72 degree water, with a deco habitat, support divers and plenty of o.c. gas.

He is the real deal and I feel privileged to know him. He's humble and unless you knew of his many exploits, adventures and accomplishments, you would never know it by meeting him. Of course, he does have some nasty habits, like sticking a video camera into your bunk at O-dark-thirty and gleefully yelling "Wake up ! It's time to go diving ! !". Good thing that YouTube was not the phenomena it is back then, but I better not give him any ideas.

jiseson · 13th November 2008, 11:01

Quote: (Originally Posted by Konaquatica)

Paul Heinerth had personally, and completely off-the-record told me of the time he put in on that ExtendAir cartidge on the deep exploration dive in Weeki Wachee. Since I promised him to keep it confidential, I have been biting my tongue when reading the posts by those demeaning the ExtendAirs, almost exclusively by those who have never dove them. Isn't it interesting that those who actually dive them, love them ? Including experienced CCR divers like myself. Regardless, I'm glad Paul has let the cat-out-of-the-bag, by publishing his account on the Dive Rite blog. P.S. Don't try this at home...he was on deco in 72 degree water, with a deco habitat, support divers and plenty of o.c. gas.

He is the real deal and I feel privileged to know him. He's humble and unless you knew of his many exploits, adventures and accomplishments, you would never know it by meeting him. Of course, he does have some nasty habits, like sticking a video camera into your bunk at O-dark-thirty and gleefully yelling "Wake up ! It's time to go diving ! !". Good thing that YouTube was not the phenomena it is back then, but I better not give him any ideas.

so what was the depth and time pls?

**Brad_Horn** · 13th November 2008, 11:09

Quote: (Originally Posted by jiseson)

so what was the depth and time pls?

TampaDiving.com :: Diving :: Weeki Wachee Spring

Looking at the above a max depth of 403ft with a time on the unit of potentially between 2 - 11.5hrs.
Depending on how the dive was conducted, when did OC deco commence.

Regards
Brad

jneves · 13th November 2008, 18:33

Quote: (Originally Posted by Dave & Sandy)

Hiya J,

Just out of curiosity, what sort of bottom time and total run time did you do for your dive?

Bottom time was about 12 minutes (bellow 100 m). Total run time was 118 minutes. It was not a long stay at depth... Used 8/75 diluent because the plan was to go deeper but the dropoff slope was not vertical enough...
Also the high He content offset the high WOB I experienced at 120 m on previous dives. Maybe not a bad idea to go heliox all the way until the loop is not up to CE standards. it was realy notorious the difference with high He. Anyway is better to avoid strong currents or high exertion at depth...

J Neves

Dave & Sandy · 14th November 2008, 02:25

Thanks J

Quote: (Originally Posted by jneves)

Bottom time was about 12 minutes (bellow 100 m). Total run time was 118 minutes. It was not a long stay at depth... Used 8/75 diluent because the plan was to go deeper but the dropoff slope was not vertical enough...
Also the high He content offset the high WOB I experienced at 120 m on previous dives. Maybe not a bad idea to go heliox all the way until the loop is not up to CE standards. it was realy notorious the difference with high He. Anyway is better to avoid strong currents or high exertion at depth...

J Neves

Jacek Lubowiecki · 21st November 2008, 14:55

140m, Blue Hole, and Canyon, Dahab , Egypt water temp 20degr. of celsius

RBEnvy · 21st November 2008, 17:44

Quote: (Originally Posted by jneves)

Hi folks, back on to topic; is it possible that my 127 m dive is still the deepest? Anyone?
CE version unfortunately still looks a long way from becoming reality so I am doing some modifications to my O2ptima lately to improve on WOB and in February 2009 may attempt to go a bit deeper if conditions allow. The mods have worked great so fare but this is just a subjective opinion as I have no way of physicaly testing WOB

Will let you know how it works out!J Neves

Quote: (Originally Posted by jneves)

Also the high He content offset the high WOB I experienced at 120 m on previous dives. Maybe not a bad idea to go heliox all the way until the loop is not up to CE standards. it was realy notorious the difference with high He. Anyway is better to avoid strong currents or high exertion at depth...

J Neves

Making modifications to the breathing loop (whether you believe they improve WOB or not), in the absence of categorical, evidence-based understanding, of how those modifications really impact WOB, is an extremely hazardous practice.

Modifying the breathing loop is implicated in several deaths, including some very experienced CCR divers.

I urge you to consider that you have reached the limits of this machine as the design currently stands. It may be that the real limits of the machine are shallower if it was tested at the appropriate breathing rate according to EN14143:2003.

If you want to go deeper or continue deep diving on an untested machine, I strongly recommend that you have your equipment tested, with and without modifications, on a breathing machine.

Muzz · 21st November 2008, 18:17

Quote: (Originally Posted by jiseson)

ok been a while-what is the deepest depth you have taken your rig-and what was water temp? tk u.

Just out of curosity. Why did you ask? Because of the extendair? Or another reason?

jneves · 21st November 2008, 18:46

Quote: (Originally Posted by RBEnvy)

Making modifications to the breathing loop (whether you believe they improve WOB or not), in the absence of categorical, evidence-based understanding, of how those modifications really impact WOB, is an extremely hazardous practice.

Modifying the breathing loop is implicated in several deaths, including some very experienced CCR divers.

I urge you to consider that you have reached the limits of this machine as the design currently stands. It may be that the real limits of the machine are shallower if it was tested at the appropriate breathing rate according to EN14143:2003.

If you want to go deeper or continue deep diving on an untested machine, I strongly recommend that you have your equipment tested, with and without modifications, on a breathing machine.

Hi there, whoever! (since I don't know your name)

Thanks for your expert advice! However I know what I am doing and take full responsability for that. I do not advise or encourage anyone to do this at home...;)

cheers

Jneves

RBEnvy · 21st November 2008, 18:56

Quote: (Originally Posted by jneves)

Hi there, whoever! (since I don't know your name)

Thanks for your expert advice! However I know what I am doing and take full responsability for that. I do not advise or encourage anyone to do this at home...;)

cheers

Jneves

No one knows the results of breathing loop modifications without testing them on a machine at appropriate breathing rates and under certain conditions.

If you were taking full responsibility you would ensure that modifications to breathing apparatus were tested on a breathing machine. You may not be actively encouraging anyone to do anything but if you fit a modification then extend your depth, that doesn't make it safe. Publishing diving information here with the inference that you have or will extend(ed) the depth capability of the machine, without appropriate testing, is plainly irresponsible.

13th November 2008, 06:51	#31 (permalink)
Konaquatica RebreatherWorld Sponsor Current Rebreather/s: Inspiration Classic Megalodon Sport Kiss Optima Other CCR Other Rebreather/s: Inspiration Vision Evolution Prism Topaz Classic Kiss MK 15.X Other CCR Join Date: Jul 2006 Location: Kailua-Kona, Hawaii The Big Island Posts: 42	Re: Optima-deepest dive Paul Heinerth had personally, and completely off-the-record told me of the time he put in on that ExtendAir cartidge on the deep exploration dive in Weeki Wachee. Since I promised him to keep it confidential, I have been biting my tongue when reading the posts by those demeaning the ExtendAirs, almost exclusively by those who have never dove them. Isn't it interesting that those who actually dive them, love them ? Including experienced CCR divers like myself. Regardless, I'm glad Paul has let the cat-out-of-the-bag, by publishing his account on the Dive Rite blog. P.S. Don't try this at home...he was on deco in 72 degree water, with a deco habitat, support divers and plenty of o.c. gas. He is the real deal and I feel privileged to know him. He's humble and unless you knew of his many exploits, adventures and accomplishments, you would never know it by meeting him. Of course, he does have some nasty habits, like sticking a video camera into your bunk at O-dark-thirty and gleefully yelling "Wake up ! It's time to go diving ! !". Good thing that YouTube was not the phenomena it is back then, but I better not give him any ideas. __________________ Hawaii's Rebreather & Tech Headquarters - Megalodon, O2ptima, KISS, Inspiration & Evolution authorized dealer. IANTD Platinum Facility CCR Trimix Instructor "Experience Your Diving Dreams At Konaquatica" www.konaquatica.com
(Offline)

13th November 2008, 11:01	#32 (permalink)
jiseson Banned Current Rebreather/s: Optima Other Rebreather/s: Join Date: Jun 2006 Location: long island,ny Posts: 828	Re: Optima-deepest dive Quote: (Originally Posted by Konaquatica) Paul Heinerth had personally, and completely off-the-record told me of the time he put in on that ExtendAir cartidge on the deep exploration dive in Weeki Wachee. Since I promised him to keep it confidential, I have been biting my tongue when reading the posts by those demeaning the ExtendAirs, almost exclusively by those who have never dove them. Isn't it interesting that those who actually dive them, love them ? Including experienced CCR divers like myself. Regardless, I'm glad Paul has let the cat-out-of-the-bag, by publishing his account on the Dive Rite blog. P.S. Don't try this at home...he was on deco in 72 degree water, with a deco habitat, support divers and plenty of o.c. gas. He is the real deal and I feel privileged to know him. He's humble and unless you knew of his many exploits, adventures and accomplishments, you would never know it by meeting him. Of course, he does have some nasty habits, like sticking a video camera into your bunk at O-dark-thirty and gleefully yelling "Wake up ! It's time to go diving ! !". Good thing that YouTube was not the phenomena it is back then, but I better not give him any ideas. so what was the depth and time pls?
(Offline)

13th November 2008, 11:09	#33 (permalink)
Brad_Horn Checklist, tick! Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic MK 15.X Home Build Join Date: Mar 2005 Location: Australia Posts: 669	Re: Optima-deepest dive Quote: (Originally Posted by jiseson) so what was the depth and time pls? TampaDiving.com :: Diving :: Weeki Wachee Spring Looking at the above a max depth of 403ft with a time on the unit of potentially between 2 - 11.5hrs. Depending on how the dive was conducted, when did OC deco commence. Regards Brad
(Online)

13th November 2008, 18:33	#34 (permalink)
jneves RBW Member Current Rebreather/s: Optima Dolphin Ray Azimuth Home Build Other Rebreather/s: Dolphin Ray Azimuth Home Build Join Date: Apr 2007 Location: Lisbon Posts: 49	Re: Optima-deepest dive Quote: (Originally Posted by Dave & Sandy) Hiya J, Just out of curiosity, what sort of bottom time and total run time did you do for your dive? Bottom time was about 12 minutes (bellow 100 m). Total run time was 118 minutes. It was not a long stay at depth... Used 8/75 diluent because the plan was to go deeper but the dropoff slope was not vertical enough... Also the high He content offset the high WOB I experienced at 120 m on previous dives. Maybe not a bad idea to go heliox all the way until the loop is not up to CE standards. it was realy notorious the difference with high He. Anyway is better to avoid strong currents or high exertion at depth... J Neves
(Offline)

14th November 2008, 02:25	#35 (permalink)
Dave & Sandy This is serious......mum Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jun 2006 Location: Melbourne, Australia Posts: 120	Re: Optima-deepest dive Thanks J Quote: (Originally Posted by jneves) Bottom time was about 12 minutes (bellow 100 m). Total run time was 118 minutes. It was not a long stay at depth... Used 8/75 diluent because the plan was to go deeper but the dropoff slope was not vertical enough... Also the high He content offset the high WOB I experienced at 120 m on previous dives. Maybe not a bad idea to go heliox all the way until the loop is not up to CE standards. it was realy notorious the difference with high He. Anyway is better to avoid strong currents or high exertion at depth... J Neves
(Offline)

21st November 2008, 14:55	#36 (permalink)
Jacek Lubowiecki RBW Member Current Rebreather/s: Other SCR Other Rebreather/s: Optima Other SCR Join Date: Feb 2006 Location: Poland Posts: 36	Re: Optima-deepest dive 140m, Blue Hole, and Canyon, Dahab , Egypt water temp 20degr. of celsius
(Offline)

21st November 2008, 17:44	#37 (permalink)
RBEnvy Banned Sock Puppet Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Oct 2008 Posts: 15	Re: Optima-deepest dive Quote: (Originally Posted by jneves) Hi folks, back on to topic; is it possible that my 127 m dive is still the deepest? Anyone? CE version unfortunately still looks a long way from becoming reality so I am doing some modifications to my O2ptima lately to improve on WOB and in February 2009 may attempt to go a bit deeper if conditions allow. The mods have worked great so fare but this is just a subjective opinion as I have no way of physicaly testing WOB Will let you know how it works out!J Neves Quote: (Originally Posted by jneves) Also the high He content offset the high WOB I experienced at 120 m on previous dives. Maybe not a bad idea to go heliox all the way until the loop is not up to CE standards. it was realy notorious the difference with high He. Anyway is better to avoid strong currents or high exertion at depth... J Neves Making modifications to the breathing loop (whether you believe they improve WOB or not), in the absence of categorical, evidence-based understanding, of how those modifications really impact WOB, is an extremely hazardous practice. Modifying the breathing loop is implicated in several deaths, including some very experienced CCR divers. I urge you to consider that you have reached the limits of this machine as the design currently stands. It may be that the real limits of the machine are shallower if it was tested at the appropriate breathing rate according to EN14143:2003. If you want to go deeper or continue deep diving on an untested machine, I strongly recommend that you have your equipment tested, with and without modifications, on a breathing machine.
(Offline)

21st November 2008, 18:17	#38 (permalink)
Muzz New Member Current Rebreather/s: Megalodon Optima Other Rebreather/s: Join Date: Mar 2005 Location: Pompano Beach FL Posts: 166	Re: Optima-deepest dive Quote: (Originally Posted by jiseson) ok been a while-what is the deepest depth you have taken your rig-and what was water temp? tk u. Just out of curosity. Why did you ask? Because of the extendair? Or another reason?
(Offline)

21st November 2008, 18:46	#39 (permalink)
jneves RBW Member Current Rebreather/s: Optima Dolphin Ray Azimuth Home Build Other Rebreather/s: Dolphin Ray Azimuth Home Build Join Date: Apr 2007 Location: Lisbon Posts: 49	Re: Optima-deepest dive Quote: (Originally Posted by RBEnvy) Making modifications to the breathing loop (whether you believe they improve WOB or not), in the absence of categorical, evidence-based understanding, of how those modifications really impact WOB, is an extremely hazardous practice. Modifying the breathing loop is implicated in several deaths, including some very experienced CCR divers. I urge you to consider that you have reached the limits of this machine as the design currently stands. It may be that the real limits of the machine are shallower if it was tested at the appropriate breathing rate according to EN14143:2003. If you want to go deeper or continue deep diving on an untested machine, I strongly recommend that you have your equipment tested, with and without modifications, on a breathing machine. Hi there, whoever! (since I don't know your name) Thanks for your expert advice! However I know what I am doing and take full responsability for that. I do not advise or encourage anyone to do this at home...;) cheers Jneves
(Offline)

21st November 2008, 18:56	#40 (permalink)
RBEnvy Banned Sock Puppet Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Oct 2008 Posts: 15	Re: Optima-deepest dive Quote: (Originally Posted by jneves) Hi there, whoever! (since I don't know your name) Thanks for your expert advice! However I know what I am doing and take full responsability for that. I do not advise or encourage anyone to do this at home...;) cheers Jneves No one knows the results of breathing loop modifications without testing them on a machine at appropriate breathing rates and under certain conditions. If you were taking full responsibility you would ensure that modifications to breathing apparatus were tested on a breathing machine. You may not be actively encouraging anyone to do anything but if you fit a modification then extend your depth, that doesn't make it safe. Publishing diving information here with the inference that you have or will extend(ed) the depth capability of the machine, without appropriate testing, is plainly irresponsible.
(Offline)

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