Michael Guerrero
Contributor
OK, so if you feel some visceral reaction and an immediate need to tell me you aren't going to tell me what GFs you run, then please save your fingers the effort of the keystrokes and my time in reading your nonsense.
Now, for everyone else who is comfortable engaging in the discussion, what are your thoughts on GFs. I'm really having difficulty reconciling the NEDU results and other studies with a "low" GF setting. I recognize that Buhlmann's algorithm had a certain degree of acceptable DCS (2.5% I think for ZHL-16A, or maybe that's just the Navy tables), and that most computers run ZHL-16C which is supposed to be more conservative. I also recognize that this is a personal choice, and that we are all human guinea pigs experimenting with very much uncertain physiological reactions to decompression and bubbles.
Anyway, based on study results, what are you using for your GF Low? Right now I'm running 30, which is the default for the Petrel, but I'm really not convinced it needs to be that low. I'm thinking 40 or even 50 to get my butt off the bottom.
And before you recommend more reading, I've read all the way through the Rebreather World thread on it with Simon and Ross going back and forth. And I've watched the presentations from DAN's conference on the NEDU study as well as the subsequently released NEDU report. And of course, I've read a bunch of deco theory and other stuff.
So, just looking for your thoughts, not recommendations for further reading or lectures on why I should read more or anything else like that .
Anyway, sorry about such a negative start to the thread. Just trying to cut through to the meat of the discussion.
Now, for everyone else who is comfortable engaging in the discussion, what are your thoughts on GFs. I'm really having difficulty reconciling the NEDU results and other studies with a "low" GF setting. I recognize that Buhlmann's algorithm had a certain degree of acceptable DCS (2.5% I think for ZHL-16A, or maybe that's just the Navy tables), and that most computers run ZHL-16C which is supposed to be more conservative. I also recognize that this is a personal choice, and that we are all human guinea pigs experimenting with very much uncertain physiological reactions to decompression and bubbles.
Anyway, based on study results, what are you using for your GF Low? Right now I'm running 30, which is the default for the Petrel, but I'm really not convinced it needs to be that low. I'm thinking 40 or even 50 to get my butt off the bottom.
And before you recommend more reading, I've read all the way through the Rebreather World thread on it with Simon and Ross going back and forth. And I've watched the presentations from DAN's conference on the NEDU study as well as the subsequently released NEDU report. And of course, I've read a bunch of deco theory and other stuff.
So, just looking for your thoughts, not recommendations for further reading or lectures on why I should read more or anything else like that .
Anyway, sorry about such a negative start to the thread. Just trying to cut through to the meat of the discussion.