HELIOX where to find information?

sannerman · 12th March 2006, 09:08

Hello there,

I´m a bit curious abbot heliox as diluent, how many out there are using it on a regular basis and what are your experience? What are good and what are not so good? And any suggestions where to find related material to read on the subject. And what mixes do you normally use?

And a other question what do you normally use fore diluent? Personally I´m using either 10/50 or 8/60 (filling He first and just top with air) Because it´s so simple to fill.

/Z

DrJM · 12th March 2006, 12:43

Nothing - Only some +

Using it shallow or deep since 2003 cf www.snoopyloop.com

J. V. · 17th March 2006, 20:43

I use only heliox for all my dive since around two years, and like DrJM, no - only +

Specially during expeditions (two dive by day for one or two weeks)
Jacques

wizbang · 19th March 2006, 20:27

I would really like some more discussion on this topic by those that have at least some experince. Your thoughts on why you chose to use heliox (no N2) and how things have gone and your new thoughts since you started using it.

It is quite a jump/leap in faith with regards to deco planning considering what little info is available.

Thanks in advance.

bubnotbub · 19th March 2006, 20:45

Hi
I use 10/50 for all my dives within the 50 meters,

8/64 or 10/90 for all the others, it depends on the availability .

And this during the 250 days for year then i dive for fun, course, job and Xpedition.

Regards

Aldo

J. V. · 19th March 2006, 21:07

Quote:

I would really like some more discussion on this topic by those that have at least some experince. Your thoughts on why you chose to use heliox (no N2) and how things have gone and your new thoughts since you started using it.

During some years I made dive with trimix around 80 to 110 meters, for two or three time I got bend at surface (little bend in right shoulder), and more often I feel some pain in arms if I made works after dive (pull up the anchor for exemple). So I decided to use heliox; since I use it (more deeper and in water more cold than before) I've not got bend and "work pains" have disapered. Probably it's not proof for everybody, but for me it's enought.
Heliox have other advantages, it's very easy to mix, re mix and re re mix.

Quote:

It is quite a jump/leap in faith with regards to deco planning considering what little info is available.

With classic (haldanian) deco model, that's right heliox deco obligations can be heavy, but with VPM or RGBM they stay acceptable.

Mikel-Deko · 22nd March 2006, 13:50

I've been trying to compare the deco obligations with trimix and Heliox.
Tx18/50 >Heliox 18/82
Can you say me wicth program do you use for calculate the deco?
With the programs that i've, the diference is "BRUTAL"

Regards

Mikel

Mdemon · 22nd March 2006, 14:03

I have been interested in heliox for a while and like the previous post have found the deco going through the roof just by removing the N2.

I think it was Barrie that told me he dove/dived/breathed it using a nitrox setting on his VR£?

What do people use for heliox deco please - heliox in VPlanner for example, or a fudge like the one I mentioned?

Mdemon · 22nd March 2006, 14:08

Just a thought, but how appropriate would it be to use a trimix for descent on really deep dives, but immediately flush with heliox for the ascent?

The benefit being getting N2 out faster and keeping the helium lower (narcosis aside) - but would there be a problem in doing this? Is there a reaction to consider, along the lines of ICD but in reverse? I can't see what, but would be interested to hear from someone who's done it/knows about this...

Marc T · 22nd March 2006, 14:51

Quote: (Originally Posted by Mdemon)

Just a thought, but how appropriate would it be to use a trimix for descent on really deep dives, but immediately flush with heliox for the ascent?

The benefit being getting N2 out faster and keeping the helium lower (narcosis aside) - but would there be a problem in doing this? Is there a reaction to consider, along the lines of ICD but in reverse? I can't see what, but would be interested to hear from someone who's done it/knows about this...

The hélium benefit is fast elimination on ascent.
But its also the problem so you need very slow ascent.
So perhaps a good choice proposed by some deep cave divers is using trimix when you meet different depth changes in your dive and heliox in "normal" situtation.
Using heliox on deco bailout is certainly safest than nitrox, and can be used after any other gases ( used on trimix DCI )

12th March 2006, 09:08	#1 (permalink)
sannerman Let´s Go Down For a While Current Rebreather/s: Classic Kiss MK 15.X Other CCR Other Rebreather/s: Classic Kiss MK 15.X Other CCR Join Date: Apr 2005 Location: Sweden Posts: 100	HELIOX where to find information? Hello there, I´m a bit curious abbot heliox as diluent, how many out there are using it on a regular basis and what are your experience? What are good and what are not so good? And any suggestions where to find related material to read on the subject. And what mixes do you normally use? And a other question what do you normally use fore diluent? Personally I´m using either 10/50 or 8/60 (filling He first and just top with air) Because it´s so simple to fill. /Z __________________ Det är hårt på sjön, fast hårdare på land www.pagi.se
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12th March 2006, 12:43	#2 (permalink)
DrJM Deep Cave Explorer Current Rebreather/s: Ouroboros Other Rebreather/s: MK 15.X Join Date: May 2005 Location: France Posts: 344	Re: HELIOX where to find information? Nothing - Only some + Using it shallow or deep since 2003 cf www.snoopyloop.com __________________ www.snoopyloop.com Deep Cave Exploration
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17th March 2006, 20:43	#3 (permalink)
J. V. Custom Title Allowed! Current Rebreather/s: rEvo Other Rebreather/s: Not Bought Yet rEvo Join Date: Mar 2006 Location: Lot & Savoie Posts: 239	Re: HELIOX where to find information? I use only heliox for all my dive since around two years, and like DrJM, no - only + Specially during expeditions (two dive by day for one or two weeks) Jacques
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19th March 2006, 20:27	#4 (permalink)
wizbang WEB MERMEN Current Rebreather/s: Inspiration Classic Dolphin Home Build Other Rebreather/s: Not Bought Yet Inspiration Vision Evolution Prism Topaz Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Perth Australia Posts: 386	Re: HELIOX where to find information? I would really like some more discussion on this topic by those that have at least some experince. Your thoughts on why you chose to use heliox (no N2) and how things have gone and your new thoughts since you started using it. It is quite a jump/leap in faith with regards to deco planning considering what little info is available. Thanks in advance.
(Offline)

19th March 2006, 20:45	#5 (permalink)
bubnotbub Silent diver Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Sport Kiss rEvo Other CCR Join Date: Sep 2005 Location: France Italy Posts: 393	Re: HELIOX where to find information? Hi I use 10/50 for all my dives within the 50 meters, 8/64 or 10/90 for all the others, it depends on the availability . And this during the 250 days for year then i dive for fun, course, job and Xpedition. Regards Aldo __________________ Aldo Ferrucci *Trimix and Rebreather IT* *Expedition Leader* *www.bubnotbub.com* I like bubbles only in my glass of Champagne
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19th March 2006, 21:07	#6 (permalink)
J. V. Custom Title Allowed! Current Rebreather/s: rEvo Other Rebreather/s: Not Bought Yet rEvo Join Date: Mar 2006 Location: Lot & Savoie Posts: 239	Re: HELIOX where to find information? Quote: I would really like some more discussion on this topic by those that have at least some experince. Your thoughts on why you chose to use heliox (no N2) and how things have gone and your new thoughts since you started using it. During some years I made dive with trimix around 80 to 110 meters, for two or three time I got bend at surface (little bend in right shoulder), and more often I feel some pain in arms if I made works after dive (pull up the anchor for exemple). So I decided to use heliox; since I use it (more deeper and in water more cold than before) I've not got bend and "work pains" have disapered. Probably it's not proof for everybody, but for me it's enought. Heliox have other advantages, it's very easy to mix, re mix and re re mix. Quote: It is quite a jump/leap in faith with regards to deco planning considering what little info is available. With classic (haldanian) deco model, that's right heliox deco obligations can be heavy, but with VPM or RGBM they stay acceptable. __________________ -------------------- Jacques NPSFQQA-EDS IT # 007 (remué non agité)
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22nd March 2006, 13:50	#7 (permalink)
Mikel-Deko Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Other CCR Join Date: Jul 2005 Location: Basque Country -Sp- Posts: 452	Re: HELIOX where to find information? I've been trying to compare the deco obligations with trimix and Heliox. Tx18/50 >Heliox 18/82 Can you say me wicth program do you use for calculate the deco? With the programs that i've, the diference is "BRUTAL" Regards Mikel
(Offline)

22nd March 2006, 14:03	#8 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	Re: HELIOX where to find information? I have been interested in heliox for a while and like the previous post have found the deco going through the roof just by removing the N2. I think it was Barrie that told me he dove/dived/breathed it using a nitrox setting on his VR£? What do people use for heliox deco please - heliox in VPlanner for example, or a fudge like the one I mentioned? __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
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22nd March 2006, 14:08	#9 (permalink)
Mdemon SiegeEngine II Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2007 Location: SWUK Posts: 1,927	Re: HELIOX where to find information? Just a thought, but how appropriate would it be to use a trimix for descent on really deep dives, but immediately flush with heliox for the ascent? The benefit being getting N2 out faster and keeping the helium lower (narcosis aside) - but would there be a problem in doing this? Is there a reaction to consider, along the lines of ICD but in reverse? I can't see what, but would be interested to hear from someone who's done it/knows about this... __________________ www.southwestmafia.com "small minds talk about people, Average Minds Talk About Events, GREAT MINDS TALK ABOUT IDEAS!" The WRONG Attitude will get you killed. "Once the agenda-monkeys and perfect-worlders have moved on, perhaps we can do some diving?"
(Offline)

22nd March 2006, 14:51	#10 (permalink)
Marc T hell is in the details Current Rebreather/s: RB80 / Clone Home Build Other Rebreather/s: Not Bought Yet RB80 / Clone Home Build Join Date: Sep 2005 Location: FRANCE Carcassonne Posts: 485	Re: HELIOX where to find information? Quote: (Originally Posted by Mdemon) Just a thought, but how appropriate would it be to use a trimix for descent on really deep dives, but immediately flush with heliox for the ascent? The benefit being getting N2 out faster and keeping the helium lower (narcosis aside) - but would there be a problem in doing this? Is there a reaction to consider, along the lines of ICD but in reverse? I can't see what, but would be interested to hear from someone who's done it/knows about this... The hélium benefit is fast elimination on ascent. But its also the problem so you need very slow ascent. So perhaps a good choice proposed by some deep cave divers is using trimix when you meet different depth changes in your dive and heliox in "normal" situtation. Using heliox on deco bailout is certainly safest than nitrox, and can be used after any other gases ( used on trimix DCI )
(Online)

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