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  1. bubblemonkey2

    Do very deep freedives risk hyperoxia (ppO2>>1.6)?

    I don't see this topic in search results What ppO2's are experienced by a deep freediver? We are taught that a ppO2 above 1.6 ATM is risky, and seizures can be readily observed in the 2.0 to 3.0+ range. A freediver in freefall might be running a ppO2 over 2.3+ ATM as they descend deeper than...
  2. bubblemonkey2

    1/2 sized standard units (e.g. JJ-CCR, P2, etc)

    Most standard config CE CCRs will do six+ hours of easy diving. If you don't know or believe it, feel free to stop reading here. But forget CE for moment... Will there ever be one that's half the size, weight and capacity, but still conforms to standard back-mounted config (e.g. JJ, P2, etc)...
  3. bubblemonkey2

    Tech divers at Keystone?

    I noticed some divers with doubles and another rebreather diver at Keystone last weekend while I was doing the jetty dive in quiet mode (JJ-CCR). Is there more known cool stuff out there deeper? Anybody know those divers? I must have missed them beachside, otherwise I'd have asked while there.
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