Bailout issue

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10-03-2019 02:42 PM
jdobbertien

Bailout issue

I dive 18/45 in my off board dill which doubles as my bailout. The reason I do it is simple because I want the helium and only have one set of tanks so this gas gives me some flexibility in depth.This seems to be a more and more common gas for people diving rebreathers. However, I have noticed in the shallower caves IE ginnie or LR that I never see anyone have a 50% bottle for bailout. Assuming you did 3 hours bottom time, which is pretty common, and you have to bailout or go SCR you would need a 50% bottle to complete your deco obligations before going to oxygen at 20ft. Is it because people are lazy or just don?t think about or am I just being an idiot
10-03-2019 03:14 PM
PfcAJ

Quote:

Originally Posted by jdobbertien

I dive 18/45 in my off board dill which doubles as my bailout. The reason I do it is simple because I want the helium and only have one set of tanks so this gas gives me some flexibility in depth.This seems to be a more and more common gas for people diving rebreathers. However, I have noticed in the shallower caves IE ginnie or LR that I never see anyone have a 50% bottle for bailout. Assuming you did 3 hours bottom time, which is pretty common, and you have to bailout or go SCR you would need a 50% bottle to complete your deco obligations before going to oxygen at 20ft. Is it because people are lazy or just don?t think about or am I just being an idiot

Plan it out and see.

If you're bailing out to that 1845 at a place like ginnie or LR, how long will you really be breathing that gas? Does that time on 18/45 increase your stop times before 20' enough to warrant bringing an extra tank to cover those stops relative to your bailout that you already have?
10-03-2019 03:34 PM
FW

I would suggest investing in more tanks. That is far too lean a mix for places like Peacock, and even Devil's Eye.
10-03-2019 04:29 PM
Superlyte27

There's absolutely zero reason to bring 50% at Ginnie on a CCR.

Plan a 3 hour dive in ginnie, tell me how long your deco is going to be between 70' and 20'. It's going to be shorter than the time it takes you to rig that tank and walk it to water. And that's IF your CCR fails and you have to bailout.
10-04-2019 08:15 AM
madmosche

Quote:

Originally Posted by Superlyte27

And that's IF your CCR fails and you have to bailout.

Don't you mean when your CCR fails and you have to bailout? :)
10-04-2019 10:37 AM
Superlyte27

Quote:

Originally Posted by madmosche

Don't you mean when your CCR fails and you have to bailout? :)

I've bailed out 1 time in literally 1000's of hours on CCR. 2 if you count the time I flooded my CCR in class.