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Hydroid Aquabreather

Discussion in 'Rebreather Diving' started by Johnoly, Nov 5, 2019.

  1. Stoo

    Stoo NAUI Instructor

    # of Dives: 5,000 - ∞
    Location: Freelton & Tobermory, Ontario, Canada
    The fireball on your head doubles as a sort of a SMB to signal the boat. :)
  2. broncobowsher

    broncobowsher Solo Diver

    If you get the explosion at depth you can experience what it is like to have a depth charge go off on top of your head.
    Coztick likes this.
  3. tech_diver

    tech_diver Dive Equipment Manufacturer

    While I was looking into this device and its claims, I thought about what it would take to really build a helmet rebreather. If you moved the counter lung to the outside of the helmet, you could place a 6 liter counter lung in the system and free up room inside the helmet for three 6 cubic foot bottles, computer modules, batteries and two beer cans scrubbers along the jaw line.

    This counter lung would be covered in a corrugated material so it could stretch and contract like counter lung hoses on the old Eoba rebreather. However, trying to market a device with a big, buoyant, pulsating brain on it would be a substantial challenge. As I looked closer at the design, I realized that the air in the counter lung would not spread out to fill it like a brain. The air space would rise to the top of the counter lung at the top of the helmet, hanging upward, probably separating into two bubbles to follow the seam in the counter lung. It would be more like a scrotum than a brain. No one's going to show a ball sack, helmet rebreather at DEMA.

    But still, I want to see the next big thing, I support technological innovation in our sport. If the diver had been swimming around that demo tank with a pulsing scrotum on his head when the helmet suddenly exploded from a violent potassium reaction, I would applaud their aspirations (from a distance).
    Hoyden, shoredivr, BenjaminF and 6 others like this.
  4. HalcyonDaze

    HalcyonDaze Manta Ray

    # of Dives: 500 - 999
    Location: Miami
    While saying "Be careful not to choke on your aspirations, diver."
  5. Jayfarmlaw

    Jayfarmlaw Divemaster

    # of Dives: 200 - 499
    Location: Tuttle, Ok
    Let me know when you are accepting pre-orders. As soon as Dick-Head diving is a reality, I'm in. This would surely make be the coolest guy on the boat. SP had a regulator that resembled a nut sack....I went with an S600 instead...

    Funny post, you win the internet today!

    BenjaminF likes this.
  6. B24L

    B24L Garibaldi

    # of Dives: 1,000 - 2,499
    Location: Wisconsin USA
    I was at DEMA and watched the 12:00 demo. As stated earlier diver spent most of his time laying on his back looking up. His breathing seemed to be very shallow.

    The incident mentioned in this thread happened the night before after the show floor had closed. A person I know said he was surprised that they went through with the demo.

    Looking forward to Undercurrents report.
  7. АлександрД

    АлександрД Manta Ray

    # of Dives: 100 - 199
    Location: Moscow, Russia
    Hey! It works!!! :eek:

    No bubbles, time over 4 minutes... it is not freediver or small spareair inside.
    Have just last question - safety of regeneration mix usage.
    descend likes this.
  8. The Ruttmeister

    The Ruttmeister Angel Fish

    # of Dives: 0 - 24
    Location: Bay Area, CA. USA
    Ok... so its not a rebreather (according to the video captions) . Except it does what rebreathers do, being a closed circuit breathing device.
    Good to see youtubers being as informed as we expect.

    And you don't need a BC, because the helmet is a BC. Ok...

    I'm all for startups trying new things, but this seems a long way from being at the MVP stage, I'm not even convinced they could even do the 60 minute dive duration they claim. Let alone at depth, safely.

    Cobbling together a proof-of-concept is one thing... And that seems to be about as far along as they are.

    Case in point: They have ONE working unit. Which means they are very early in development.

    I guess there are so few startups at DEMA that these guys are going to get a lot of attention.
  9. broncobowsher

    broncobowsher Solo Diver

    "Working unit" might be stretching it a little bit. Minimal function unit might be more accurate. I can tie a trash can on my head and call it a rebreather and might survive a few minutes underwater as well. Add a little can of nasty stuff that can generate some O2 and absorb CO2. It might be a little more functional as you can do full breaths.
  10. tech_diver

    tech_diver Dive Equipment Manufacturer

    Technically, it is a rebreather. He had a bucket on his head while wearing a small emergency CO2 scrubber oral/nasal mask. There was a Spare Air in the top of the bucket leaking fresh air into his bucket which vented out in the form of a small bubble stream. A full Spare Air with a worn poppet could seep gas for quite a while. There was no oxygen generation.

    So technically, yes, it is a rebreather. But his bucket volume was barely half the tidal volume of his lungs so he had to breathe shallow and not exert himself. At the second demo, they used a smaller diver with a smaller tidal volume to look more convincing.

    At depth under pressure, there isn't enough gas in a Spare Air to fill the bucket and the diver lungs. This whole thing was just a magic trick to look like some high tech helmet rebreather. This product will never exist as advertised.

    Now if they changed the counterlung to my external head scrotum design, they might be on to something.

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