Quote: (Originally Posted by
trob09)
I saw a comment somewhere that I believe was attributed to Casey saying they'd reached the limits (or were approaching the limits) of what they could do with SCR.
Seeing as how they are talking about CCR's at the GUE conference, I would expect them to be evaluating if CCR will allow them to push further than SCR. This would be a different evaluation from 'are CCR's safe now'.
But that's all hearsay and speculation
I think that it is the limit of the scrubber that Casey was talking about - rather than the limit of SCR. Compared to the bailout needed for extreme dives the drive gas is minimal (say 2-4 Al80s) thus CCR does not offer any real advantage (you'd need two stages anyway - dil and O2) and there is no CCR that can do 10h + or so on one fill.
CCR does offer some advantage for ocean bounces (maybe you can carry less stages)- but I'll stick to my RB80
Graham