Deco Gasses

[Jax]

Ignore everyone else, instructor included, listen to CD and me....

:kiss2: A rebreather is not in my future, sweetie!


How many other people chose their deco gear according to instructor requirements?

I can imagine that instructors might recommend, and require a certain minimum standard, but to actually require specific gear . . . <nose wrinkle>

 

[netmage]

:kiss2: A rebreather is not in my future, sweetie!


How many other people chose their deco gear according to instructor requirements?

I can imagine that instructors might recommend, and require a certain minimum standard, but to actually require specific gear . . . <nose wrinkle>

They were not referring to 'specific' gear down to the make\model....

And no - CD and I will not point you to a RB - not yet at least...

But the last thing you want is to go out and spend all sorts of money based on some sales slick and think it's right when it has the word 'tech' in it....

Read this page and ignore any and all 'logos'....

BTW - who's your instructor?

 

[ucfdiver]

The reason for 100% is that with anything less you are still on gassing Nitrogen.

This isn't even remotely close to correct.

Seriously, if an instructor taught you that, call them up and demand a refund.

 

[Jax]

They were not referring to 'specific' gear down to the make\model....

And no - CD and I will not point you to a RB - not yet at least...

But the last thing you want is to go out and spend all sorts of money based on some sales slick and think it's right when it has the word 'tech' in it....

Read this page and ignore any and all 'logos'....

BTW - who's your instructor?

Moi?!?!?! :spit:

You haven't been around any of my questions sessions, have you? :blinking: According to ONESPEED, I'll be analyzing the size of the bb in the weight pouch until the cows come home!

 

[netmage]

Moi?!?!?! :spit:

You haven't been around any of my questions sessions, have you? :blinking: According to ONESPEED, I'll be analyzing the size of the bb in the weight pouch until the cows come home!

Well you still have to know which air rifle it'll fit in when the time comes... :shocked2:

 

[Docc]

I took the class thru TDI and all that was required was 40 cf stage bottle/reg and a lift bag/spool. Of course the instructor also recommended I take the class in backmount doubles with a 7' hose and a can light. Oh yeah and a drysuit.

 

[Hetland]

95cf+ tank, h-valve, twin regs, deco bottle/reg, lift bag seems to be the core requirements. most folks will let you borrow a reel.

I only start turning my nose up when they say no split fins allowed

 

[FireInMyBones]

This isn't even remotely close to correct.

Seriously, if an instructor taught you that, call them up and demand a refund.

I looked at my post and realized that I stated my point very poorly. But not incorrect.

I should have said: "The reason for 100% is that you off gas Nitrogen faster due to a higher pressure gradient: zero resistance from Nitrogen in your breathing gas."

As with soluble molecule, Nitrogen will cross into and out of tissue. I failed to mention that the rate at which it off gassed would be much greater than it on gassed.

Although (for example) 80% will off gas Nitrogen slower than 100%, 100% does not allow for any on gassing of Nitrogen.

The end result is still off gassing Nitrogen at a higher rate than your back gas alone, 100% is by far the most efficient.

 

[ucfdiver]

I looked at my post and realized that I stated my point very poorly. But not incorrect.

I should have said: "The reason for 100% is that you off gas Nitrogen faster due to a higher pressure gradient: zero resistance from Nitrogen in your breathing gas."

As with soluble molecule, Nitrogen will cross into and out of tissue. I failed to mention that the rate at which it off gassed would be much greater than it on gassed.

Although (for example) 80% will off gas Nitrogen slower than 100%, 100% does not allow for any on gassing of Nitrogen.

The end result is still off gassing Nitrogen at a higher rate than your back gas alone, 100% is by far the most efficient.

Well, stating that anything other than 100% will cause tissues to on gas is indeed incorrect. Now, on anything but a saturation dive, using 50% you will have a few slow tissues which do on gas, but they're not the ones we care about at that point, anyways.

100% isn't the fastest gas to get you out of the water all the time, which was kind of what I was getting at earlier.

 

[Rainer]

100% isn't the fastest gas to get you out of the water all the time, which was kind of what I was getting at earlier.

If you'd stop being such a pu$$y about it and ignore PPO2s, yes, 100% would get you out fastest.