Bit of info about doubles for a technical noob :)

[PfcAJ]

Quite the statistician...

 

[ucfdiver]

The problem is that 99% of the time you will not know where the issue is.

What about those of us who aren't deaf?

I was air-gunned during training and got the post correct every time. Isolator leak is the only one I think I would struggle with. They're inches away from your shoulders, you can reach back and feel bubbles as well.

 

[limeyx]

The problem is that 99% of the time you will not know where the issue is.

The real problem is that 87% of people make up 94% of their statistics within 2.35 minutes of reading a post on Scubaboard

 

[LiteHedded]

Primary objective is to save as much gas as possible. The rest is all secondary.

leaking gas and team separation. now you have two big issues to deal with.

foot on the banana peel...

 

[rjack321]

The problem is that 99% of the time you will not know where the issue is.

Funny,
100% of the time when air gunned in training I knew where it was. Instructors have to actively try to deceive your ears.

100% of the time in real life I knew where the issue was (once)

How about them statistics?

 

[rjack321]

leaking gas and team separation. now you have two big issues to deal with.

foot on the banana peel...

You forgot the silt out when your knees settled on the bottom.

Or the embolism when you breached the surface like a ballistic missile.

 

[Blackwood]

What about those of us who aren't deaf?

I think it has to do with whether or not you're breathing normoxic.

 

[Superlyte27]

lol... i worry that in my confusion I won't diagnose the issue correctly quickly enough. In the effort to save the most gas, I consider shutting isolator. I can do that very quickly and at least I have half my remaining gas supply. From that point, then I can diagnose where the issue is coming from.

for instance...
Lets say left side is blowing like crazy. It could be a hose, a burst disk, an oring on tank or regulator or din fitting, it could be an oring on the left side of the isolator (I know many of these are very unlikely) If we turn off the post and the problem was DIN Oring, Regulator Oring or Hose, great, we just saved a buttload of gas. But, if it's the burst disk, tank o-ring or isolator oring, we've just took 20 seconds to turn off a post that did nothing to stop the issue. I've seen a burst disk drain a tank in less than a minute, so how much gas was wasted in the 20 seconds it took to turn off the left post, and how much more is wasted in the 20 seconds it takes to turn the isolator. Do you now have enough gas to get yourself home? Yes, I know that's what buddies are for but this is all speculation.

Now, lets say you take the exact same example as above, but this time, you turn Isolator first. We lose most, if not all, gas in our left tank, but what's remaining in our right tank should be more than 1/3 to get us home right?

This isn't one of those discussions where you see things your way, and I see things my way, and neither of us are willing to change. This is something I consider every single dive, and if there's a better thought process for the worst case scenario (not the most likely) of a dive, then that's what I want to learn.

 

[rjack321]

lol... i worry that in my confusion I won't diagnose the issue correctly quickly enough. In the effort to save the most gas, I consider shutting isolator. I can do that very quickly and at least I have half my remaining gas supply. From that point, then I can diagnose where the issue is coming from.

Except that is its reg failure you actually lose more by "wasting" time shutting the isolator first.

 

[Superlyte27]

Except that is its reg failure you actually lose more by "wasting" time shutting the isolator first.

Read above, i edited my post. Yes, you lose more, but still should have more than 1/3 left in your remaining tank.