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Scott, with any equipment we match our activity ( underwater ) to the breathing, not the other way around . The work of breathing is not the issue, the work of swimming is. If you have to swim at 300 feet, you are going to do some very real damage, and get bent. However, we would need a lot of scooter failures to get to that point since we are using three each and three safety scooters. We have three bottles every 1200 feet, so we can swim 500 on those open circuit, and use 1/8 that in the rebreather for the other 700 feet, and we have 440 cubic feet of gas to run through the rebreather. Also, as you know from your own rebreather diving, one does not want to create too much CO2 - the scrubber will not last . If we have to swim, it will be slow, like 50 feet per minute - a long day. I regularly swim every day a lot further than these cave dives, but that is on top of the water, and all it is doing for me is giving me the endurance and the circulation to deal with this stuff. It all alls back on proper planning and preparation. The Halcyon, like all rebreathers, has its own "sweet spot" - in this case is just happens to be the standard cave diving position. Also , the current units breath quite well, and I should know, I have quite a few hours breathing off of them over the last three years - quite a few. I really like the thing. I have done these long distance dives on scuba ( 10,000 in this same cave, and similar dives elsewhere, and can tell you that this is the best way to do these kinds of dives. We also can not spend any time looking at monitoring devices, we just do what we are doing and the thing will either breath and work properly, or you will know it is not and know why immediately. I did , at one point in the dive, check my pressure guage, and I did watch the time throughout the dive for purposes of the survey, the scooters, etc. This device wil lnot give you the feeling of easy breathing that an over the shoulder bag will, but then I can not personally tell the difference, and the lenght of time I have to stay on this thing without problems tells me it is ok to breath for long periods of time. Jeff Bentley wrote: > > Scott, > > Youv'e got the wrong group. The pig rebreather is the Cis-Lunar. > > BTW... are you not the same fellow who asked?... > > > Date: Tue, 24 Sep 1996 14:42:28 +1000 > From: Scott Leimroth <anscott@ns*.co*.au*> > Organization: South Pacific Divers Club Inc. > Subject: Deco > > Fibonnacci sequence.????? > Can somebody please explain what this is to this poor fool. > Thanks in advance, > Scott > > There was a recent article in the CDS or NACD mag that explained > breather WOB. > > Jeff > > > Scott Leimroth wrote: > > It is incredible. Well done George, Jarrod and the rest of > the WKPP. Just out of interest, I have heard many people say > the Halcyon breathes like a pig. It is obvious from your > dives and those done in the Ressel that is is the tool for > the job. I was wondering if the WOB would be a problem If > you had to swim out? I know you have more than enough > scooter back up and with your incredible fitness it probably > wouldnt matter if you were breathing off Dacor regs. > Flame away ;) > > Scott > -- > Send mail for the `techdiver' mailing list to > `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to > `techdiver-request@aquanaut.com'. > > > > -- > Jeff Bentley jbentley@cr*.co* http://www.crl.com/~jbentley > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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