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Eqex

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.
My understanding:

The problem eqEx is suppose to solve.

* Not enough air available high in the head to equalize the ears.

The theory being if the air is removed from the lung earlier in the processes it will be *not* be absorbed into the blood/tissue or trapped in the lungs. This means more gas is available in the mouth and upper respiratory system later in the dive.

So he goes down to 20-30m. Exhales into the bottle. Goes down to past 70-100m takes a sip of air (air that started out in his lungs) into his mouth and then forces it into his ears (which is easy because all the air is in the mouth).

Some people have calculated that this should not be necessary, but Herbert finds it more comfortable.

Other benefits:

- less likely to suffer from DCS because you have less time with N2 in the body. (also seems marginal, but it should in theory help)
- being low on O2 earlier in the dive kicks the dive reflex in stronger, but having the air later keeps him alive. (no idea how effective this benefit is)

I know some people suggest flooding the sinuses to equalize, but that does run a high-risk of infection. No idea how that compares with this. It seems flooding the sinuses should be more effective at clearing with the Eqex, but more risky.
 
I don't quite get the mechanics of the Hf.cc.Eqex. It if flooded with water at the beginning of the dive. Herbert puts air in to it (which continues to compress with depth), but I don't know if more water comes in or plastic deforms.

Can anybody see in a video how it works?
 
I think this is how it must work:

-bottle is full of water
-Herbert blows into the bottle through the straw, thereby trapping air in the straw and at the top of the bottle (an air bubble).
-the water in the bottom is of course at the same pressure as the water outside the bottle.
-as he descends the air in the straw and bottle compresses, and the bubble appears to retreat up into the straw somewhat as he descends, but there is enough air for him to use when he needs it.
 
Now, when is someone going to build a mask that is completely flexible and has an huge internal volume. Wouldn't need coke bottles then :)

Or maybe a pipe mask with a flexible "balloon" part in the tube...Something like that.
 
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