> To tell you the truth, the more I see it, the shallower I make my aed > for nitrogen. The problem then becomes that you do not have as much gas > due to the lower degree of compressibility. This much I agree with - I started limiting my PN2 to about 2.5 atm as soon as I started using the rebreather. The compressibility issue is insignificant with a rebreather - even a semi-closed one. Put N2 in your bailout cylinders. The only reason I use nitrogen at all anymore is to alleviate the "helium willies", which I know you already know about. > Personally, I do not like the feel of a 130 air dive later on, so there > is some kind of damage, so maybe just having ANY helium works, since a > 130 trimix dive does not produce the same effect, and a 130 aed trimix > dive does not produce the same ell as a 130 air dive. Everytime I go deeper than 100 feet on air I feel like shit that night and the next morning. I realized that I always felt that way before, but just figured it was related to diving in general. I don't feel that way at all with the helium - not even after the days where I do two deep ones, and even on dives when the PN2 is greater than it is for air at 100-130. I don't think it's the presence of helium as much as it is the elevated O2 on deco. > I am just going with what my experience tells me, but now we are in the > mood to take it further to see hat the story is, besides, I like rabbit. When you do these experiments, let me know how the rabbit tells you when its shoulder hurts. Don't get me wrong, george - I keep the N2 to a minimum also. It's just that I am smart enough to know that "quickie" explanations like the RBC rigidity thing are usually only a small part of the full picture, if any part at all. I am also very dubious about doing deco on helium as compared to doing the bottom on helium and the deco on N2. Rich Richard Pyle Ichthyology, Bishop Museum deepreef@bi*.bi*.ha*.or* 1525 Bernice St. PH: (808) 848-4115 Honolulu, HI 96817-0916 FAX: (808) 841-8968 "The views are those of the sender and not of Bishop Museum" -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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