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Thread: Please identify rebreather

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    RBW Member Anthony Appleyard is an unknown quantity at this point Anthony Appleyard's Avatar
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    Please identify rebreather

    http://1.bp.blogspot.com/-ZgFZDitFgh...r+poseidon.jpg

    A Google search for "rebreather" in image mode found this image, which to me looks like the head of a rebreather diver starting to emerge vertically from water, with what looks like a somewhat Darth-Vader-like fullface mask. Is this mask a commercial make or a special?

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    RBW Member Remco is an unknown quantity at this point Remco's Avatar
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    Re: Please identify rebreather


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    RBW Member Anthony Appleyard is an unknown quantity at this point Anthony Appleyard's Avatar
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    Re: Please identify rebreather

    Thanks.

    Oh, it's an ordinary eyes-and-nose mask, and the 'Darth Vader' part is a separate big mouthpiece.

    Poseidon MKVI | Poseidon

    The advertisement says "No decompressions stops", but what happens if the diver persists in staying deep, or makes a repeat dive soon after coming out?

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    Re: Please identify rebreather

    Quote Originally Posted by Anthony Appleyard  View Original Post
    Thanks.

    Oh, it's an ordinary eyes-and-nose mask, and the 'Darth Vader' part is a separate big mouthpiece.
    Not really that big, considering what it does. it is a combined BOV/ADV. So it is really a Poseidon extreme second stage. If you want to see a big mouthpiece, look into the Sentinel Rebreather :)

    Quote Originally Posted by Anthony Appleyard  View Original Post

    The advertisement says "No decompressions stops", but what happens if the diver persists in staying deep, or makes a repeat dive soon after coming out?
    Marketing BS, they are comparing it to OC recreational diving on Air. As you are breathing optimum Nitrox at all levels during the dive, you could stay at 15-20 meters for 2 hours without deco. Otherwise, it is the same rule for the MkVI as it is for all diving, no magic.

    To fully fathom the marketing BS, they are comparing apple and oranges. You could do the same on OC with an optimal Nitrox mix for the same dive. But with the big difference that you would use up about 7200 litres of gas compared to about 3-400 litres of O2/Diluent on a Rebreather.

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    RBW Member Anthony Appleyard is an unknown quantity at this point Anthony Appleyard's Avatar
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    Re: Please identify rebreather

    Have any of you seen a fullface mask this shape? From my CGI modelling it seems to make the breathing tubes loop about less.
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    Re: Please identify rebreather

    How do I clear my ears with something like that?

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    RBW Member Anthony Appleyard is an unknown quantity at this point Anthony Appleyard's Avatar
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    Re: Please identify rebreather

    Quote Originally Posted by Captain Starfish  View Original Post
    How do I clear my ears with something like that?
    The same way as a hardhat diver or when using various diving fullface masks

    https://en.wikipedia.org/wiki/Full_face_diving_mask

    that do not let the fingers reach the nose, or if the diver's hands are both busy. See https://en.wikipedia.org/wiki/Ear_clearing#Methods.

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    Re: Please identify rebreather

    Quote Originally Posted by Anthony Appleyard  View Original Post
    The same way as a hardhat diver or when using various diving fullface masks

    https://en.wikipedia.org/wiki/Full_face_diving_mask

    that do not let the fingers reach the nose, or if the diver's hands are both busy. See https://en.wikipedia.org/wiki/Ear_clearing#Methods.

    Hmmm.. I wonder.. do you dive at all?

    Those de pressurising methods work when you travel in air and when you have reasonable change in ambient pressure. When you dive, the pressure changes 100% from 0 to 10 meters. And it is a bit tricky to yawn under water without loosing your regulator ;)

    Most of the FFM has the possibility to block your nose to equalize. Playing around with CGI is cool, but you need to have certain knowledge of the area that you are designing for.

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    RBW Member Anthony Appleyard is an unknown quantity at this point Anthony Appleyard's Avatar
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    Re: Please identify rebreather

    Quote Originally Posted by Jeppe_E  View Original Post
    Hmmm.. I wonder.. do you dive at all?

    Those de pressurising methods work when you travel in air and when you have reasonable change in ambient pressure. When you dive, the pressure changes 100% from 0 to 10 meters. And it is a bit tricky to yawn under water without loosing your regulator ;)

    Most of the FFM has the possibility to block your nose to equalize. Playing around with CGI is cool, but you need to have certain knowledge of the area that you are designing for.
    I can wrinkle my nose hard enough (using the _compressor naris_ muscles) to close my nose enough to let me clear my ears without needing to use a hand or a noseclip. I have done this many times while diving.

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    RBW Member humpbackdiving is an unknown quantity at this point humpbackdiving's Avatar
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    Re: Please identify rebreather

    Quote Originally Posted by Anthony Appleyard  View Original Post
    I can wrinkle my nose hard enough (using the _compressor naris_ muscles) to close my nose enough to let me clear my ears without needing to use a hand or a noseclip. I have done this many times while diving.
    Are you for real?

    I can just about to clear my ears by half yawning movement and descending pretty slowely. The faster I descend the harder 'blow'. Plus as I am concentrating on ppo2 and increasing the loop, listening to the solenoid.. Etc. The last thing I want is to try and 'wrinkle nose hard enough to let clear the ears'.

    I would not even know where to start.

    But that must be one hell of a party trick!

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