Recent content by Wibble

  1. Wibble

    Should I build a cloud-based dive logbook?

    Cloud; hell no. Once you've been diving a bit you'll settle in to either using your computer to log dives. They all have applications and most computers can be connected to the open source (is it?) SubSurface application. Signing logbooks is only for early novices. Thereafter you just go...
  2. Wibble

    Recreational Pony Bottles, completely unnecessary? Why or why not?

    [ Think this is a gooist fundies thing: up at 9m/30ft per minute from 27m/90ft to 15m/50ft (2 mins), then one minute per 3m to the surface (6mins) all comes to 8 mins? ]
  3. Wibble

    Recreational Pony Bottles, completely unnecessary? Why or why not?

    Absolutely. A freshly minted diver -- "I'm advanced I am" -- is a liability until they're dived up. You earn your place on the boat through experience not being taught. Teaching is an early phase of experience. Teaching's also overrated. J. F. D. I. and take responsibility for yourself.
  4. Wibble

    Where should the pressure gauge be mounted and what are the advantages of this configuration?

    Not so much to you, but you’re probably right that it’s a bit mansplaining. Bored with the end of the season. Bored with not being able to travel. So many plans, so little time and so few divable caves around here.
  5. Wibble

    PADI Gas Matching

    Say you’re diving with Mr G Guzzler and you’re frugal with gas, for the purposes of discussion, say you’re half of Mr Guzzler. Say also that his cylinders are twice the capacity of yours. Should the excrement hit the propeller at the worst time with Mr Guzzler's gas lost, would there be...
  6. Wibble

    PADI Gas Matching

    What is the depth for "PADI deep tec" training? Is it beyond Trimix (60m)? Or is it an intro level? Asking that as the experienced people who've moved through their technical levels on open circuit are unlikely to be gas hogs. Those would have been weeded out through the cost of the helium...
  7. Wibble

    Where should the pressure gauge be mounted and what are the advantages of this configuration?

    Skirting around a difficult topic…. Sump divers are cave divers too... Sump divers are frequently "cavers who dive" and only dive to get though a flooded sump to the next chamber. Their kit is minimalist as it needs to be caved through to the sump and beyond through subsequent sumps. They'll...
  8. Wibble

    brand new to idea of scooters

    My Blacktip experience … It’s a great scooter, wonderful in the water, neutrally buoyant, easy to clip off to a chest D-ring, masses of battery capacity, easy to use, lots of control over speed from slow to hold position against the current through too fast! Is that enough Blacktip...
  9. Wibble

    Where should the pressure gauge be mounted and what are the advantages of this configuration?

    No. The hose is pressurised to ambient pressure PLUS the intermediate pressure (approximately 10bar/ata). In the surface it’s 10 bar, at 40m/130ft it is 15bar/ata. Your lungs are pressurised to ambient pressure, 1bar or 5bar in those examples. Your breath is much larger than the hose capacity.
  10. Wibble

    Recreational Pony Bottles, completely unnecessary? Why or why not?

    Alas, despite how relevant, they’re all lost in the noise.
  11. Wibble

    Recreational Pony Bottles, completely unnecessary? Why or why not?

    Are those like snorkels. Or spare air. Or diving solo. Or the amazing DiveMaster skills. DIR. BP+W. GUE JJ. Bud-dies (awful beer). How easy warm water diving is. All must do Fundies. Only real divers dive in cold water. Helium costs. Haven’t you got a rebreather yet. Gradient...
  12. Wibble

    brand new to idea of scooters

    It's slightly relevant: why do you want one. For mobility issues, it's a challenge when they're out of the water. I guess a scooter would be OK to help you get around the site without "hurting". Having different speeds helps here; slow is good.
  13. Wibble

    brand new to idea of scooters

    Scooters are great for getting around the site and getting an overview. Particularly good for an overall view of a wreck so you can find the bits you're interested in: bow, stern, boilers, etc. Then clip off the scooter and in you go! When diving on a reef it's something interesting to do...
  14. Wibble

    Where should the pressure gauge be mounted and what are the advantages of this configuration?

    A small breath still is x 5 at 40m/130ft. A big breath will be 2.5 litres, so I guess I could re-do my calculations... Surface: 0.7litres hose / 2.5 litres lungs = 28% of a full breath. 40m/130ft/5ata: 1.05 litre hose / 12.5 litres lungs = 8.4% of a full breath.
  15. Wibble

    Recreational Pony Bottles, completely unnecessary? Why or why not?

    But your contributions have been excellent
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