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One finger pogo?

Discussion in 'Rebreather Diving' started by northernone, Dec 7, 2018 at 1:02 AM.

How many times per hour do you contact the bottom.

  1. Never

    48.0%
  2. A few times (Will remain this way)

    24.0%
  3. A few times (working actively to reduce)

    24.0%
  4. 10

    0 vote(s)
    0.0%
  5. 30

    4.0%
  6. Constantly, I'm a bottom bouncer.

    0 vote(s)
    0.0%
  1. northernone

    northernone IDC Staff Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Currently: Cozumel, from Canada
    3,552
    2,999
    113
    For rebreather divers with 100+ hrs on the loop (arbitrary number) when you maintaining within 2ft of an uneven bottom how often do you use it to stabilize your position? (contact on any bottom contour or overhead with a finger or two, particularly when changing depths over an obstacle)

    Are you happy with the amount of 'dabs' you use?

    What's some of the ways that helped you fine tune your buoyancy control on CCR?

    (not suggesting a "no touch" rule or even that using touch is an inferior method of propulsion and stability.)

    Cameron
     
  2. ChuckP

    ChuckP Barracuda

    # of Dives: 100 - 199
    Location: Holland MI
    206
    105
    43
    Do you really have zero buoyancy control on CCR with your lungs? Realizing how much steering I do by breathing......... I have never dove CCR
     
  3. northernone

    northernone IDC Staff Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Currently: Cozumel, from Canada
    3,552
    2,999
    113
    Exactly right! The better you had gotten OC using breath for buoyancy the harder it is to transition to rebreather which is 100% 'bcd' where exhaling just moves air from your lung to your matched counterlung resulting in no change in buoyancy.

    It's tricky.
    Cameron
     
    Cyborg Pirate and lionfish-eater like this.
  4. Superlyte27

    Superlyte27 Cave Instructor

    # of Dives: 5,000 - ∞
    Location: Florida
    3,353
    2,086
    113
    Like anything else, it takes practice. But, if you inhale hard.... you will.... do nothing. Because you have simply moved gas from counterlungs to your lungs. No effect on buoyancy. However, if you exhale hard... you will.... still do nothing. Because you have simply moved the gas from your lungs to the counterlungs.

    You get used to it. It's pretty nice once it's dialed in. And you know how, when your buoyancy is absolutely perfect on open circuit that you slightly rise with inhalation and slightly drop with exhalation.... on CCR you don't move an inch. It's awesome.
     
    Cyborg Pirate and ChuckP like this.
  5. Superlyte27

    Superlyte27 Cave Instructor

    # of Dives: 5,000 - ∞
    Location: Florida
    3,353
    2,086
    113
    It's not 100% BCD. You can add gas to your loop via mav and vent via mouth/nose for buoyancy. I know lots of divers with large counterlungs using this method as their primary driver in buoyancy.
     
    abnfrog likes this.
  6. northernone

    northernone IDC Staff Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Currently: Cozumel, from Canada
    3,552
    2,999
    113
    Nice clarification. I learned on an o2 unit with no 'bcd' other than the loop (and a drysuit). Diving the topaz loop as primary bcd carried over as long as I'm shallow enough and not wasting trimix for lift.
     
  7. abnfrog

    abnfrog Tech Instructor

    # of Dives: 2,500 - 4,999
    Location: great white north
    978
    487
    63
    your diving trimix on the topaz?
     
  8. northernone

    northernone IDC Staff Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Currently: Cozumel, from Canada
    3,552
    2,999
    113
    I don't trust my home builds that deep.

    What made the biggest difference in fine tuning your buoyancy on the loop? (sorted decades ago I suppose)

    Cameron
     
  9. abnfrog

    abnfrog Tech Instructor

    # of Dives: 2,500 - 4,999
    Location: great white north
    978
    487
    63
    cool ,who did your tri mix course?
     
  10. Dsix36

    Dsix36 Solo Diver

    1,295
    816
    113
    Body position and the resulting location or movement of the "air bubbles" will make slight adjustments to your buoyancy.
     

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