Bouyancy

[DOXA]

To check my weight, I was taught that with 30 bar left in my tank I don't need air in my wing at 6 meters. Just by inhaling/exhaling you descent/ascent. If you dive with a drysuit, does it also have to be empty? Or to put it differently: to check your weight do you have to be completly in the squenze?

What about isolation at the end of a dive during a stop at 3 meters with 30 bar left in the tank?

D.

 

[mart1]

Drysuit has to be empty at all times, which does not mean squeezed, just at a comfortable amount of air to avoid squeeze.

 

[JeffG]

To check my weight, I was taught that with 30 bar left in my tank I don't need air in my wing at 6 meters. Just by inhaling/exhaling you descent/ascent. If you dive with a drysuit, does it also have to be empty? Or to put it differently: to check your weight do you have to be completly in the squenze?

Drysuit should be at ambient pressure.

What about isolation at the end of a dive during a stop at 3 meters with 30 bar left in the tank?

D.

I'm not sure what you are asking.

 

[DOXA]

Do I get it right that I have to equilize the pressure in my suit also during the check how much weight I need?
I already know that during the dive I have to use my wing and not my suit for bouyancy.

D.

 

[Meng_Tze]

Yes, just enough gas in suit to be comfortable. And just that.

What do you mean about isolation....?

 

[DOXA]

Ah, a translation error. I mean heat insulation. But that will be alright with al little bit of gas in my suit.

D.

 

[Snowbear]

To be properly weighted, you need to have enough weight to be able to control your ascent. The ascent from 10' to the surface is just as important to control, if not more so, than the rest of it. You need to be able to control this shallow part of the ascent with a nearly empty tank.

You should be able to do this with no gas in your wing and only enough gas in your drysuit to maintain the loft in your undergarment... More gas than what's required to maintain this loft won't really benefit you in the warmth department (yes, I've tried it).

 

[DOXA]

To be properly weighted, you need to have enough weight to be able to control your ascent. The ascent from 10' to the surface is just as important to control, if not more so, than the rest of it. You need to be able to control this shallow part of the ascent with a nearly empty tank.

You should be able to do this with no gas in your wing and only enough gas in your drysuit to maintain the loft in your undergarment... More gas than what's required to maintain this loft won't really benefit you in the warmth department (yes, I've tried it).

Wwith my DUI TLS 350 it takes quite some time to let the air out. Especially in the last 3 meters. Is that normal?

D.

 

[JeffG]

Wwith my DUI TLS 350 it takes quite some time to let the air out. Especially in the last 3 meters. Is that normal?

D.

Different undergarments behave differently and valves can only dump so fast. If you wait too long to dump gas, you could end up not being able to control your ascent. (Which is the #1 issue with drysuit diving.)

 

[Snowbear]

Yeah, what JeffG said. I find that if I anticipate the need to dump air from the drysuit and start doing it before it's absolutely necessary, I don't have to play "catchup" or lose control of my buoyancy 'cause the suit won't dump fast enough.