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Thread: Replacing AutoAir for cave streamlining

  1. #11
    Submerge Productions PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver is a splendid one to behold PCDiver's Avatar
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    Quote Originally Posted by ROB DAVIE
    can get an M&J manifold with ten ports to replace the factory unit.
    Rob, where did you purchase that manifold? Any other manifolds available?

  2. #12
    New Member CaveStainz is an unknown quantity at this point CaveStainz's Avatar
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    Re: Replacing AutoAir for cave streamlining

    Hi All,

    I've just come back from my CCR cave course with Martin Robson of Eau2 Technical Diving. We spent 2 weeks in Florida upgrading my Tech Cave open circuit qualification to CCR and doing some MOD3 trimix diving and wanted to close down this thread with what i chose to do in the end with my Inspiration rig.

    I removed my AutoAir from my Classic Inspiration and chose a shorter direct feed inflator hose which i ran from the manifold bar, and retained the AutoAir's corrogated rubber hose. I purchased a Zeagle BC inflator for around £40 and cable tied this securely to the rubber hose and cut to length of the LP inflator hose.

    In terms of bailout options (having removed the AutoAir), i think in all cases, especially cave diving it is essential to bailout off board, but make sure that there is an inflator hose that can be connected to the manual diluent addition button to run semi closed or provide extra gas in the rare event that you lose your inboard diluent.

    Actually, it's all there in the training materials from IANTD, but the original question about how to remove the AutoAir turns out to be very straightforward!

    Thanks all,

    Steve

  3. #13
    Administrator ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE's Avatar
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    Re: Replacing AutoAir for cave streamlining

    Quote Originally Posted by PCDiver
    Rob, where did you purchase that manifold? Any other manifolds available?
    M & J ENGINEERING

    mjengin@hotmail.com

    858.748.9442 Poway, California, USA

  4. #14
    Administrator ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE has a spectacular aura about ROB DAVIE's Avatar
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    Re: Replacing AutoAir for cave streamlining

    Folks,

    In my note about my set-up, I should have made more of a point about the need for independent back-up. My Expedition Inspiration has 7-litre tins built in, but even so, I have added an M&J 10-port manifold, and provision for off-board quick disconnects to feed the BOV.

    The main tins on all of the known RB's are way too small to use for anything other than a quick breath or three if you are deep, or under an overhead environment.

    Running side slung, or side-mount tins of a reasonable size is the only way to go, whether you plug them in, or use completely separate units.

    The picture above of JDZ with his side-slung set-up is a really nice shot of how that type of rigging looks and works. :)

    Rob

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    Re: Replacing AutoAir for cave streamlining

    Quote Originally Posted by ROB DAVIE
    M & J ENGINEERING

    mjengin@hotmail.com

    858.748.9442 Poway, California, USA
    Here's their website.

    http://www.mj-engineering.com/shop/

    If you create an account(it's free) you can see the prices for everything.

    Mike

  6. #16
    Andy Favata CCR-Wrecker has a spectacular aura about CCR-Wrecker has a spectacular aura about CCR-Wrecker has a spectacular aura about CCR-Wrecker has a spectacular aura about CCR-Wrecker has a spectacular aura about CCR-Wrecker's Avatar
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    rEvo

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    Re: Replacing AutoAir for cave streamlining

    Quote Originally Posted by jhaaja
    I have an OC reg connected to the YBOD dil manifold. I hang it under my chin. I think it is good to have the possibility to go OC as fast as possible for a few breaths. This can be done from the 3L tank. The tank is too small for bailing out from a cave, but for a breaths to clear your head and identify the problem you are facing it is OK.

    I also keep my bail-out stage valve partly open, so that I can get that gas also quickly to use. I am also considering a LP-inflator hose to be fitted to the bail-out stages reg. This would be nice if your on-boar dil gets low. I could plug it to the manual dil button and at least get gas in to the loop.

    JH
    FInland
    That's how I do it. Extreme reg on a bungie for sanity breaths Al 80 for bailout. The penetration is limited to the 80
    Andy

  7. #17
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    Re: Replacing AutoAir for cave streamlining

    Quote Originally Posted by CaveStainz
    In terms of bailout options (having removed the AutoAir), i think in all cases, especially cave diving it is essential to bailout off board, but make sure that there is an inflator hose that can be connected to the manual diluent addition button to run semi closed or provide extra gas in the rare event that you lose your inboard diluent.
    I'd agree. I had to bail at 60m in a cave during the summer, switching to the onboard gas via the KISS OC DSV. I only had a few breaths to get settled before switching to my stage. I went back on the loop once I was shallower and there was more gas around, even with just a few breaths out of it I was well short of dil for the exit (as well as a flooded loop, running out of O2 and my HID failing) even though I was trying to take as even a line as possible (yes, Zak, I know that was along the floor of the cave whilst flapping every limb). I'm still in two minds whether or not to add a connection for offboard dil.

  8. #18
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    Re: Replacing AutoAir for cave streamlining

    In Mexico we have really large cave systems; that is way I chose to carry 2 S80 aluminum tanks both clipped on the left side (scooter issues) and one of those tanks reg fitted with 7 ft hose (at least 5 ft). We at Protec never use in board bail out by the volume of the tanks plus if is close circuit I think is better keep like that the most is possible.
    I didn't change my O2ptima to much, I just placed a shorter power inflator hose on my original Venture wings and add a clip at the secondary display to clip at my right hip D'ring. The pressure gages I stick inside my waist belt or under the counterlungs (my pre-production unit have a splited counterlungs for over than 5 months, modified in Mexico) to avoid snag on the line in small passages.
    On the Inspiration the wing will be replace for a Dive Rite Rec wing and the original box for a custom made frame to give me the capability to mount the tanks with the valves up right.

    Mike - www.protecdiving.com

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