Mr T's Wild Freedive

[saxman242]

You will have no idea when to go up lol. When free diving you are passed the urge to breathe, the mammalian reflex.

Hopefully someone can answer when to go up cause it is really important. Wait too long, you could suffer hypoxia.

Are you saying treat a half breath at depth the same as a full at the top? I will let you try it first

Sure you do. Build up of co2 drives the feeling of the need for air, telling you it is time to go up.

If one ignores that, however, all bets are off.

 

[IncreaseMyT]

Sure you do. Build up of co2 drives the feeling of the need for air, telling you it is time to go up.

If one ignores that, however, all bets are off.

After 60 seconds I feel no urge to breathe whatsoever, especially the deeper I go. I bet it would come on faster with a half breath, 30-40 seconds.

So my point is proven lol. Again. You cant take air off a reg at depth and continue free diving.

 

[Mark IV]

So what's the difference in a freediver taking a breath from someone's scuba tank, and swimming around a bit before surfacing, versus that same freediver taking a breath at the surface, descending to depth, and swimming a bit, before ascending ?
As i always understood, traditional freedivers (no scuba help) were already at inherent risk of SWBO. That's exactly why I used to go out as a safety diver when my buddy used to do 100ft drops. I would always wait till i saw him coming up, and I'd swim down and meet him 15-20ft from the surface, and escort him up.
So,again, how does the addition of a breath from a tank alter, or worsen, this scenario?

 

[IncreaseMyT]

So what's the difference in a freediver taking a breath from someone's scuba tank, and swimming around a bit before surfacing, versus that same freediver taking a breath at the surface, descending to depth, and swimming a bit, before ascending ?
As i always understood, traditional freedivers (no scuba help) were already at inherent risk of SWBO. That's exactly why I used to go out as a safety diver when my buddy used to do 100ft drops. I would always wait till i saw him coming up, and I'd swim down and meet him 15-20ft from the surface, and escort him up.
So,again, how does the addition of a breath from a tank alter, or worsen, this scenario?

Because you are not going to know how long you can stay down, and now you have started with a half breath, rather than a full breath. I imagined even less if you exhale it at depth, but I am told I am wrong about that. How long you can stay down depends on how much 02 you have. It is going to be less on a half breath. So what I am saying is if you were to just continue free diving, you don't know when to go up, and you risk going up too late and not having enough 02.

It has nothing to do with the scuba tank, the only thing the scuba tank does is make you more buoyant, because you just filled up your lungs that were compressed. So now your fighting your buoyancy and using more 02 as well, and you're ascending too fast.

 

[saxman242]

Why wouldn't you know when to go up?

 

[IncreaseMyT]

Why wouldn't you know when to go up?

I don't know I don't practice on half breaths, I just practice on full breaths. If you can normally hold your breath for 2.5 minutes on a full breath, how long can you hold it on a half breath?

And now you have to factor in the changes that occurred at depth when you exhaled. I wouldn't even begin to try and work it out. Not a good idea.

And your at 70 feet!! It is creepy down there on a breath hold. Not something I do regularly and something that you have to work your way up to each time you get back out there. 25 -30 feet is fine usually because you only need 60 seconds to get down and back.

 

[saxman242]

I don't know I don't practice on half breaths, I just practice on full breaths. If you can normally hold your breath for 2.5 minutes on a full breath, how long can you hold it on a half breath?

And now you have to factor in the changes that occurred at depth when you exhaled. I wouldn't even begin to try and work it out. Not a good idea.

How do the 99% of people freediving that don't time their dives not die?

 

[IncreaseMyT]

How do the 99% of people freediving that don't time their dives not die?

They practice, and you extend your depth little by little. No one is diving close to their limit and not timing it.

If you can hold your breath a long time and you are well within your abilities no you don't have to time it.

 

[saxman242]

A freediver that's maximizing their time underwater by timing their dive then breathing off a tank and trying to maximize their time further by timing again is one hell of a corner case.

 

[tridacna]

How about just not read the thread then?

Because it is an ongoing fount of misinformation. An unknowing newcomer may actually mistake some (any?) of your posts as fact. (Impossible as that may be to believe).