Why do you get dry suit squeeze and not wet suit squeeze?

[do it easy]

Maybe sort of like this?
http://www.scubaboard.com/showpost.php?p=2740967&postcount=56

Darn it! Busted again! I better go back and read this thread so I can figure out what it's about.

 

[Tigerman]

Question..
If the suit wants to deform to compensate for the lowered volume of air in the suit, but you are in its way, will you not get a "vacuum" situation on top of the force of the water, since the suit want to deform furhter, but youre in its way?

Even with a neoprene drysuit I do feel the squeeze far more than in a neoprene wetsuit, even without the wrinkles "pinching me"..
Is that because of the fact that my suit is crushed neoprene which dont allow much compression of the air IN THE SHELL to act as a buffer, or is it because of suggested "vacuum" occuring in the drysuit?

 

[D_B]

Darn it! Busted again! I better go back and read this thread so I can figure out what it's about.

:lol: You've got more pages to go thrugh this time as well

It looks like everyone has there own idea about dry suit squeeze ... no matter what anyone else says
... I'm going for another drink, guess I had better put my wetsuit on, eh Andy

 

[do it easy]

You just gave me a brilliant idea DB- next time I dive, I'll put a bunch of oranges in my drysuit and not equalize it. By the time the dive is over, I should have freshly squozen orange juice!

 

[Tigerman]

You just gave me a brilliant idea DB- next time I dive, I'll put a bunch of oranges in my drysuit and not equalize it. By the time the dive is over, I should have freshly squozen orange juice!

Good luck with that.. And if you make it work, good luck with the smell and stickyness of the suit too



(ohwait, oranges is like 98% liquid)

 

[H2Andy]

alright ... i have a somewhat indelicate question

IF you get drysuit squeeze ... and you break wind in the suit

will it relieve the squeeze? even if just a tiny tiny tiny bit?

or will the gas thus passed be already under pressure in your gut and thus have no effect (no matter how minute) on the squeeze?

 

[Tigerman]

alright ... i have a somewhat indelicate question

IF you get drysuit squeeze ... and you break wind in the suit

will it relieve the squeeze? even if just a tiny tiny tiny bit?

or will the gas thus passed be already under pressure in your gut and thus have no effect (no matter how minute) on the squeeze?

In the name of science, Ill test that for you on my next dive (which im itching for, BADLY, since its friggin ice on the water here atm)

 

[SteveC]

People, please re-read my post, and think about what our are saying.

I think we are missing the point. There is no difference in pressure exerted on the diver regardless of what type of suit he/she is wearing. As far as the difficulty breathing thing goes, dry suits are restrictive around the neck, but that’s all. The pressure on the divers chest is the same regardless of which suit is being worn. Also, the pressure is the same whether there is air in the dry suit or not.

 

[Tigerman]

People, please re-read my post, and think about what our are saying.

Ill be blunt..
Youre wrong!

When you feel like someone put a rope around your chest and is slowly tightening it, its definetly not "its just tight in the neck"

 

[markr]

Good lord, this is such a simple concept. The fabric is what is causing you to FEEL squeezed because it is shrinking due to the forces of pressure outside.

I agree the concept should be simple, the fabric is causing you to feel squeezed due to the forces of the outside pressure. I'm not sure the word shrinking actually applies to what's happening, but that's not the point I was trying to make.

At the surface the volume of the suit is equal to the volume of air in the suit plus the volume of your body. This can be expressed as:
T = X + Y :where T=total volume, X=volume of air, Y=volume of your body

It seems to me that your claiming that the squeezing is being caused by the total volume (T) decreasing to less then the volume of your body(Y).

The point I've been trying to make is the total volume can't become less then the volume of your body. At a depth of 99' experiencing 4 atmospheres of pressure the volume of air in the suit would be reduced to one fourth the pressure at the surface, which results in the total volume being:
T = .25X + Y

"T" will always remain greater then "Y" for any depth that's not going to crush your body. Even at a depth that would crush you "T" will still probably be greater then "Y" by some tiny amount but "Y" is going to turn into mush.

The volume within the drysuit is shrinking because it folds up. There is no space time anomaly.
It was something of a joke, but the analogy is there and accurate with a little bit of abstract thought. The event horizon is the point where nothing can escape the black hole. The edge of your body is the point at which the shrinking volume of the drysuit starts to squish you.

I did catch the joke, that's why I added the one of my own about the space/time anomaly. I noticed there were several Star Wars comments a few posts back so I tried to slide in a little Star Trek humor. The Enterprise was always having problems with space/time anomalies.