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William M. Smithers Wrote: >Glad you asked, but it's moot, because since I went closed-circuit, I only >dive Heliox below 150ft, then switch to N2 diluent for deco. We are comparing apples to oranges, so to compare notes here is what I get when I use the same deco gasses (I normally use 35%, and 100% O2, but add a 50% if it's deep or long BT). Running Decom I get: Depth BT ----- -- 300 25 14/50 150 2 14/50 140 2 14/50 130 2 14/50 120 2 EAN 35 110 1 EAN 35 100 3 EAN 35 90 2 EAN 35 80 4 EAN 35 70 4 EAN 50 60 6 EAN 50 50 6 EAN 50 40 12 EAN 50 30 14 EAN 50 20 21 100% 10 30 100% I would then add a 1 minute stop at 230 and 160, and keep my ascent rate at about 30ft/min until about 120 then 10ft/min (don't want those bubbles forming). I also do all of my 10ft stop at 20ft, and nail all the deep and intermediate stops. If I blow off some of the 20 ft stop, then it is not as bad as missing the deep or intermediate stuff. The water temp is high 40's to low 50's, and I run Argon. I run additional tables for a 5 min bounce (aborted) dive, and I like to see what happens if I blow my BT. I don't re-run decom after I add the deep stops. I consider it deco. I usually start my BT at 120. -Jon -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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