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Thread: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

  1. #11
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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Thanks Curt, I am going to file it right next to the one on Isobaric Counterdiffusion...

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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Quote Originally Posted by wedivebc  View Original Post
    Great article, but what kind of idiot would not use a MFO?
    Only a bunch of unsafe idiots (or so I read online somewhere)

  3. #13
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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Arrgh! Got me worried there for a minute. It looked as though you were saying Eric was dead when I saw his photo!

  4. #14
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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Quote Originally Posted by Nick Ambrose  View Original Post
    Thanks Curt, I am going to file it right next to the one on Isobaric Counterdiffusion...
    Your welcome

    Keep reading, someday you might figure it out.

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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Quote Originally Posted by Curt Bowen  View Original Post
    Your welcome

    Keep reading, someday you might figure it out.
    I highly doubt it. I dont think I am smart enough

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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    "Adding a continuous flow device on a solenoid electronically controlled closed circuit rebreather can reduce the workload of the solenoid and add a significant safety net for electronics failure."

    adding a MFO to an eCCR requires blocking the first stage, which imposes a depth limit. That's a turn off to a lot of folks.

    Seems like adding a needle valve would be a better way of hybridizing an eCCR, eliminating the depth limit while still encouraging a more active monitoring and maintenance regime.

    has anyone hybridized an eCCR with a needle valve?

    g
    Last edited by Gill Envy; 11th September 2010 at 04:50.

    Gill Envy

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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Osiris has a Palagian needle valve on an Inspo.

  8. #18
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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Quote Originally Posted by Silentbob  View Original Post
    Oh hang on I figured it out for myself...
    WELL DONE !!And who said that our friends across the Tasman could only play Rugby ?

  9. #19
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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    Quote Originally Posted by Gill Envy  View Original Post
    has anyone hybridized an eCCR with a needle valve?
    I run a hybrid JJ. I run it as an MCCR from a 3l tank, plus I have a solenoid fed from a 1.5l O2. The ppO2 on the electronics is set to 1.0 while I'm diving, but I keep it at 1.1 to 1.3 manually.

    Janos's JJ rig of anti-chaos

    Janos
    Last edited by Janos; 11th September 2010 at 08:08.

  10. #20
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    Re: Dead in 7 Minutes - The Importance of a Continuous Flow Oxygen Orifice

    CMF is such a simple way to dive a CCR and has so small a windows for failure.

    Personally i am not a fan of cranking a DS4 to 13bar to achieve depth so I am tempted by needle valve rigs but anything that gets rid of a dependence on electronics is good with me.

    Diving a CCR manually without CMF or needle valve is perfectly possible when overcoming a broken CCR issue but totally pointless as an intended way of diving. There are not enough "issues" with MCCR to make it worth while.

    I can only assume with UTD that they want a method of diving that can be used to any depth without altering the normal diving system. I am assuming that needle valves are out for reasons unknown and its obvious ECCR is not an option (id be disappointed if it were)

    If this is the case they should have just said it like that rather than do the old GUE thing of slagging off a perfectly good system, using a lesser system to replace it and proclaiming it better.

    Perhaps you cant teach an old dog new tricks after all.


    ATB


    Mark

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