Bailout

skiverdiver · 8th May 2007, 06:44

Hi,

New to CCR - just got MOD 1.

What are people generally using for bailout in the 35-40m range?. Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins).

Thanks

Roy

plazma · 8th May 2007, 07:22

Quote: (Originally Posted by skiverdiver)

Hi,

New to CCR - just got MOD 1.

What are people generally using for bailout in the 35-40m range?. Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins).

Thanks

Roy

UDG (Ultimate Diving Gas = air) is just fine if open water

EAN50 and/or O2 for deco.

-Pasi

Nad · 8th May 2007, 09:04

Quote: (Originally Posted by skiverdiver)

Hi,

New to CCR - just got MOD 1.

What are people generally using for bailout in the 35-40m range?. Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins).

Thanks

Roy

With a 50% you can't bailout at more than 22m! With the Inspiration however you can use the on board diluent up to the MOD of the 50%.
Otherwise, if you won't use your onboard diluent you could choose a 32%.

Nad

skiverdiver · 8th May 2007, 12:01

Quote: (Originally Posted by Nad)

With a 50% you can't bailout at more than 22m! With the Inspiration however you can use the on board diluent up to the MOD of the 50%.
Otherwise, if you won't use your onboard diluent you could choose a 32%.

Nad

Anything wrong with a 7l stage of air?....

Roy

**nigelh** · 8th May 2007, 13:14

Quote: (Originally Posted by skiverdiver)

What are people generally using for bailout in the 35-40m range? Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins).

Hummm....
You've pitched it right on the borderline between not bothering and taking a 7L sling of something bottom mixish.
Over 40m, and hence into serious deco, I'd make that 7L of bottom and 7L of 100%. I've run a whole bunch of scenarios on dive planners and that seems to get me out of anything I'd plan to dive.

I do have access to the onboard O2 which was almost assumed when I started on the Inspiration but now seems to have dropped out of fashion.

PCDiver · 8th May 2007, 13:51

Quote: (Originally Posted by nigelh)

Hummm....
I do have access to the onboard O2 which was almost assumed when I started on the Inspiration but now seems to have dropped out of fashion.

I can access my O2 via a quick connect that allows me to "bridge" the O2 part of the manifold to the diluent part of the manifold. So no risk of a free-flowing regulator, but O2 reachable if need be.

Mark Chase · 8th May 2007, 18:37

What every one else uses is totaly irelevent.

Whats your SAC and how long do you intend on staying on the bottom?

If you did a 40m dive with 15min deco thats about 35mins on the bottom on 1.3

So if you had to bail out at min 34 on the TDI recomended SAC of 40LPM you would need 600bar in a 7ltr to bailout on 32% let alone air.

If you say your SAC will drop as you calm down and you average it at 30lpm then you need 458bar in a 7ltr of 32%

If you decide to go mental on the deco and run streight Bhulman on the ascent you could get away with 451 bar.

Or lets say your imune to the effects of C02 your balls are massive and made of brass and you SAC will not go above 20lpm. Then you only need 350bar.

Its not looking good is it?

So for 40m 35mins you might want to consider two bottles for bailout. A deep mix and a rich mix. A 7ltr of 32% and a 7ltr of 70% perhaps

That would alow an average SAC of 30 and you would need about 200bar in each cylinder to do a comfortable 20/80GF profile.

You see, there is taking bailout, and there is pretending to take bailout

PS: Note Avtar of me about to do a 39m dive

ATB

Mark Chase

skiverdiver · 8th May 2007, 19:17

Quote: (Originally Posted by Mark Chase)

What every one else uses is totaly irelevent.

Whats your SAC and how long do you intend on staying on the bottom?

If you did a 40m dive with 15min deco thats about 35mins on the bottom on 1.3

So if you had to bail out at min 34 on the TDI recomended SAC of 40LPM you would need 600bar in a 7ltr to bailout on 32% let alone air.

If you say your SAC will drop as you calm down and you average it at 30lpm then you need 458bar in a 7ltr of 32%

If you decide to go mental on the deco and run streight Bhulman on the ascent you could get away with 451 bar.

Or lets say your imune to the effects of C02 your balls are massive and made of brass and you SAC will not go above 20lpm. Then you only need 350bar.

Its not looking good is it?

So for 40m 35mins you might want to consider two bottles for bailout. A deep mix and a rich mix. A 7ltr of 32% and a 7ltr of 70% perhaps

That would alow an average SAC of 30 and you would need about 200bar in each cylinder to do a comfortable 20/80GF profile.

You see, there is taking bailout, and there is pretending to take bailout

PS: Note Avtar of me about to do a 39m dive

ATB

Mark Chase

Mark,

Cheers - finally a bloody sensible and straight answer

...knew SAC rate would figure!...

Looks like I am gonna need another 7L for Scapa then!.....

Roy

8th May 2007, 06:44	#1 (permalink)
skiverdiver New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2007 Location: Portsmouth Posts: 13	Bailout Hi, New to CCR - just got MOD 1. What are people generally using for bailout in the 35-40m range?. Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins). Thanks Roy
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8th May 2007, 07:22	#2 (permalink)
plazma New Member Current Rebreather/s: Inspiration Classic Home Build Other Rebreather/s: Home Build Join Date: Feb 2005 Location: Oulu, Finland Posts: 104	Re: Bailout Quote: (Originally Posted by skiverdiver) Hi, New to CCR - just got MOD 1. What are people generally using for bailout in the 35-40m range?. Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins). Thanks Roy UDG (Ultimate Diving Gas = air) is just fine if open water EAN50 and/or O2 for deco. -Pasi
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8th May 2007, 09:04	#3 (permalink)
Nad Rebel to the Bone Current Rebreather/s: Ouroboros Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Other CCR Join Date: Mar 2005 Location: Europe Posts: 976	Re: Bailout Quote: (Originally Posted by skiverdiver) Hi, New to CCR - just got MOD 1. What are people generally using for bailout in the 35-40m range?. Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins). Thanks Roy With a 50% you can't bailout at more than 22m! With the Inspiration however you can use the on board diluent up to the MOD of the 50%. Otherwise, if you won't use your onboard diluent you could choose a 32%. Nad __________________ The Impossible is often the Untried
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8th May 2007, 12:01	#4 (permalink)
skiverdiver New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2007 Location: Portsmouth Posts: 13	Re: Bailout Quote: (Originally Posted by Nad) With a 50% you can't bailout at more than 22m! With the Inspiration however you can use the on board diluent up to the MOD of the 50%. Otherwise, if you won't use your onboard diluent you could choose a 32%. Nad Anything wrong with a 7l stage of air?.... Roy
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8th May 2007, 13:14	#5 (permalink)
nigelh New Member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 837	Re: Bailout Quote: (Originally Posted by skiverdiver) What are people generally using for bailout in the 35-40m range? Cylinder size(s)/configuration(s) etc??. Assuming relatively short deco planned (say, less than 15mins). Hummm.... You've pitched it right on the borderline between not bothering and taking a 7L sling of something bottom mixish. Over 40m, and hence into serious deco, I'd make that 7L of bottom and 7L of 100%. I've run a whole bunch of scenarios on dive planners and that seems to get me out of anything I'd plan to dive. I do have access to the onboard O2 which was almost assumed when I started on the Inspiration but now seems to have dropped out of fashion. __________________ nigelh
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8th May 2007, 13:51	#6 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 968	Re: Bailout Quote: (Originally Posted by nigelh) Hummm.... I do have access to the onboard O2 which was almost assumed when I started on the Inspiration but now seems to have dropped out of fashion. I can access my O2 via a quick connect that allows me to "bridge" the O2 part of the manifold to the diluent part of the manifold. So no risk of a free-flowing regulator, but O2 reachable if need be.
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8th May 2007, 18:37	#7 (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: 2,700	Re: Bailout What every one else uses is totaly irelevent. Whats your SAC and how long do you intend on staying on the bottom? If you did a 40m dive with 15min deco thats about 35mins on the bottom on 1.3 So if you had to bail out at min 34 on the TDI recomended SAC of 40LPM you would need 600bar in a 7ltr to bailout on 32% let alone air. If you say your SAC will drop as you calm down and you average it at 30lpm then you need 458bar in a 7ltr of 32% If you decide to go mental on the deco and run streight Bhulman on the ascent you could get away with 451 bar. Or lets say your imune to the effects of C02 your balls are massive and made of brass and you SAC will not go above 20lpm. Then you only need 350bar. Its not looking good is it? So for 40m 35mins you might want to consider two bottles for bailout. A deep mix and a rich mix. A 7ltr of 32% and a 7ltr of 70% perhaps That would alow an average SAC of 30 and you would need about 200bar in each cylinder to do a comfortable 20/80GF profile. You see, there is taking bailout, and there is pretending to take bailout PS: Note Avtar of me about to do a 39m dive ATB Mark Chase __________________ 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 Last edited by Mark Chase : 8th May 2007 at 18:49.
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8th May 2007, 19:17	#8 (permalink)
skiverdiver New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2007 Location: Portsmouth Posts: 13	Re: Bailout Quote: (Originally Posted by Mark Chase) What every one else uses is totaly irelevent. Whats your SAC and how long do you intend on staying on the bottom? If you did a 40m dive with 15min deco thats about 35mins on the bottom on 1.3 So if you had to bail out at min 34 on the TDI recomended SAC of 40LPM you would need 600bar in a 7ltr to bailout on 32% let alone air. If you say your SAC will drop as you calm down and you average it at 30lpm then you need 458bar in a 7ltr of 32% If you decide to go mental on the deco and run streight Bhulman on the ascent you could get away with 451 bar. Or lets say your imune to the effects of C02 your balls are massive and made of brass and you SAC will not go above 20lpm. Then you only need 350bar. Its not looking good is it? So for 40m 35mins you might want to consider two bottles for bailout. A deep mix and a rich mix. A 7ltr of 32% and a 7ltr of 70% perhaps That would alow an average SAC of 30 and you would need about 200bar in each cylinder to do a comfortable 20/80GF profile. You see, there is taking bailout, and there is pretending to take bailout PS: Note Avtar of me about to do a 39m dive ATB Mark Chase Mark, Cheers - finally a bloody sensible and straight answer ...knew SAC rate would figure!... Looks like I am gonna need another 7L for Scapa then!..... Roy
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