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Thread: Submatix Sidemount Bailout Rebreather

  1. #11
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    Quote Originally Posted by AndrewR  View Original Post
    How does this work as a bailout rebreather? Ie If you bail out on to it how does it have breathable mix ready?
    But that's a good question!

    How do you make sure that the Bo ccr has the right po2 at the time you actually need it?
    I'd say fill the loop with dil and close the o2 valve. Adv should maintain loop volume on descent, once you bail out you would have to open o2 to make the cmv work and adjust the po2? Leave o2 open with a cmv would not make sense cause it would give you high po2 until you bailout because there was o2 constantly injected but none metabolized.

    So anyone who has used a bo ccr how is your procedure?

    Cheers

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  2. #12
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    Quote Originally Posted by AndrewR  View Original Post
    How does this work as a bailout rebreather? Ie If you bail out on to it how does it have breathable mix ready?
    You would have to breathe on both units on the way down. Once at depth turn the O2 off.

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    Re: Submatix Sidemount Bailout Rebreather

    [


    I use two sidemount rebreathers on a regular basis for years now.
    They are both connected to a gas block that give the same gas for each breather.
    O2 is not connected on the one you choose to be the bailout one.

    Its quite impossible to be hypoxic when going down even if you dont add 02.
    Two mistake can been done with BOB:
    -testing it on pure O2 ( for test )at 6m and forget it so with a rich diluent you can be hyperoxic ( for a short time ) at depth.
    -If you use two diluent ( sometime I switch from air to trimix to avoid wasting He on up and down cave profile ) you must not forget to flush the BO loop from air after the switch ( narcosis risk on BO )

    Hope thts help

  4. #14
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    Re: Submatix Sidemount Bailout Rebreather

    Quote Originally Posted by tflaris  View Original Post
    You would have to breathe on both units on the way down. Once at depth turn the O2 off.

    No, all you need is for the diluent to have a PPO2 of between .7 and 1.4 for the deepest section of the dive. The ADV will keep the bag at ambient pressure or you can manually add a little extra diluent upon the descent, etc.

    IF, you needed to bail to the rebreather, correcting the PPO2 quickly may be the least of your worries. Remember on a rebreather, everything moves slowly, thus you will have several minutes to adjust any PO2 problem. If your concerned, go to semiclosed for a minute.

    If someone does not know how to adjust your own PPO2 on a rebreather, they might need to go back to class.

  5. #15
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    Re: Submatix Sidemount Bailout Rebreather

    Quote Originally Posted by tflaris  View Original Post
    You would have to breathe on both units on the way down. Once at depth turn the O2 off.
    I think you only open the diluent. You leave the O2 off.
    The ADV will fill the lungs on the way down.

    When you need to bailout, you turn on the O2 and adjust the PPO2 to whatever you want it to be.

    And diluent is most of the time breathable, no? Even something like 10/52 is 0.2 at 10 meters.

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    Re: Submatix Sidemount Bailout Rebreather

    don`t turn the oxy off.you will flood the system.a shutoff valve behind the needle valve protect the breather.

  7. #17
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    Re: Submatix Sidemount Bailout Rebreather

    I Posted a ton of pictures taken at DEMA 2012 for of the Submatrix rebrathers. To view click below.


    http://www.rebreatherworld.com/photopost/showgallery.php/cat/587

    Best regards,
    Chett. L

  8. #18
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    Re: Submatix Sidemount Bailout Rebreather

    Quote Originally Posted by kwinter  View Original Post
    The diluent tank has a green valve? Isn't it a standard to have green for O2?
    In Germany, the law requires that Oxygen cylinders have a blue valve.

    Cheers!!

  9. #19
    RBW Member David Street is an unknown quantity at this point David Street's Avatar
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    Re: Submatix Sidemount Bailout Rebreather

    Quote Originally Posted by Jantje  View Original Post
    I think you only open the diluent. You leave the O2 off.
    The ADV will fill the lungs on the way down.

    When you need to bailout, you turn on the O2 and adjust the PPO2 to whatever you want it to be.

    And diluent is most of the time breathable, no? Even something like 10/52 is 0.2 at 10 meters.
    What I'm doing is this....
    1. Pre-breathe the sidemount at the surface
    2. Switch off O2 for the decent
    3. At the bottom (or the maximum dive depth) turn on the O2
    4. Inject O2 to the correct PPO2 for the depth

    This should give a breathable gas if needed.

    Thanks,
    David

  10. #20
    RBW Member David Street is an unknown quantity at this point David Street's Avatar
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    Re: Submatix Sidemount Bailout Rebreather

    Quote Originally Posted by Curt Bowen  View Original Post
    No, all you need is for the diluent to have a PPO2 of between .7 and 1.4 for the deepest section of the dive. The ADV will keep the bag at ambient pressure or you can manually add a little extra diluent upon the descent, etc.

    IF, you needed to bail to the rebreather, correcting the PPO2 quickly may be the least of your worries. Remember on a rebreather, everything moves slowly, thus you will have several minutes to adjust any PO2 problem. If your concerned, go to semiclosed for a minute.

    If someone does not know how to adjust your own PPO2 on a rebreather, they might need to go back to class.
    This is correct.

    Regards,
    David

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