Mr T's Wild Freedive

[Mark IV]

severely increasing your chance of blacking out when you hit 15 feet.
Hopefully the diver you got the gas from was diving high nitrox mix, don't forget to look horizontally and don't look up, cause you really increased your chances of passing out.

Admitedly, I'm a few years removed from dealing with all this stuff, but it was my understanding that "shallow water blackout" occurred because the body was using the oxygen in the lungs, but the ambient water pressure kept the partial pressure of oxygen (PP02) high, but when ascending, the PP02 drops, resulting in a lack of oxygen and possible blacking out. I don't ever recall anything about the nitrogen compressing.

 

[Storker]

when free diving the nitrogen compresses,

It does. As do the oxygen, the CO2 and the argon

and leaves the body with almost all oxygen

Whoah! And me believing it just took up less space due to being... what was that word again? Oh, yes, compressed. So, where does it go?

If you take a breath off a reg, when you exhale the nitrogen would compress and the oxygen would flow out,

I think you could make pretty good money manufacturing that Maxwell's demon that magically separates oxygen and nitrogen. Current oxygen production uses cryogenic distillation, which is a rather expensive process. Given the amount of oxygen produced annually in the world, you'll have a pretty decent market.

 

[Storker]

Admitedly, I'm a few years removed from dealing with all this stuff, but it was my understanding that "shallow water blackout" occurred because the body was using the oxygen in the lungs, but the ambient water pressure kept the partial pressure of oxygen (PP02) high, but when ascending, the PP02 drops, resulting in a lack of oxygen and possible blacking out. I don't ever recall anything about the nitrogen compressing.

Mine, too.

 

[Mark IV]

Never, ever give air to a free diver. You don't know what they understand or how well they understand it or if they even remember. The danger doesn't lie in becoming positively buoyant, but rather in not remembering to exhale on ascent and incurring a lung over-expansion injury. After all, the first rule of diving is "Don't stop breathing". BOYLES is really an acronym for "Breath Or Your Lungs'll Explode, Stupid. Thought you should know.

Thanks bro, but you're late to the party. All this info is well understood, and was thoroughly covered way back in page one !
Just one of several similar posts.....

"I've had free divers want to take a breath from my octo, and (unless i thought they were in danger, which i don't believe ever happened), I'd refuse them. You have no way of knowing if they understand the risk, and how to prevent it. They may take a breath, and hold it all the way back to the surface, ultimately wrecking both your lives !"

 

[IncreaseMyT]

So, where does it go?.

Uhmmmm it absorbs into the body. Are you guys sure you got your open water? You got me wondering

 

[The Chairman]

Thanks bro, but you're late to the party.

I might be, but when I see petty crap being bandied about as somehow being pertinent, I have to restate the obvious.

The ONLY problem/issue of note to arise out of a free diver breathing off of a regulator is a possible barotrauma that could result in their death. I'll leave the bloviation about how much additional buoyancy will be produced to wannabe net-warriors.

 

[drk5036]

You are confused again, when free diving the nitrogen compresses, and leaves the body with almost all oxygen. If you take a breath off a reg, when you exhale the nitrogen would compress and the oxygen would flow out, severely increasing your chance of blacking out when you hit 15 feet. Oh and remember you're going too fast and that also increases your chances, since we are 2 pounds positive when we shouldn't be.

Hopefully the diver you got the gas from was diving a high nitrox mix, don't forget to look horizontally and don't look up, cause you really increased your chances of passing out.

okay

You are confused again, when free diving the nitrogen compresses, and leaves the body with almost all oxygen. If you take a breath off a reg, when you exhale the nitrogen would compress and the oxygen would flow out, severely increasing your chance of blacking out when you hit 15 feet. Oh and remember you're going too fast and that also increases your chances, since we are 2 pounds positive when we shouldn't be.

Hopefully the diver you got the gas from was diving a high nitrox mix, don't forget to look horizontally and don't look up, cause you really increased your chances of passing out.

Lol, at least we all know you’re trolling now, at least.

 

[IncreaseMyT]

okay

Lol, at least we all know you’re trolling now, at least.

I am not trolling. It is obvious that the posters in this thread do not understand the effects of diving on a free diver. I think you all need to study up, then come back.

 

[IncreaseMyT]

The ONLY problem/issue of note to arise out of a free diver breathing off of a regulator is a possible barotrauma that could result in their death. I'll leave the bloviation about how much additional buoyancy will be produced to wannabe net-warriors.

Thats not true, your buoyancy would be affected big time. And if you let out 30% of the gas in your lungs, which at depth is all oxygen, even if your lungs did not experience over expansion you just severely increased your risk of blacking out.

You black out (same thing as passing out) from a lack of oxygen. It is no different than when we were kids and you exhaled and had your friends push on your chest until you passed out.

FYI

 

[MichaelMc]

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There’s a tremendous amount of misinformation in what T is saying. Don't base any diving decisions on it. Do your own reading on basic diving physics and physiology.
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Just to state the obvious before this gets shut down to further posts.

Bowing back out of this confusion fest, as trying to correct T is pointless.

ETA: Do not give a free diver compressed gas.