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| Originally Posted by Step I would very much like to know:
(I have no access to planning tools other than BSAC88/Nitrox table and my Air only Aladin Pro so can’t look this up for myself.)
1.
A. How much bottom time in the 30-50m range can I get using 1-2 deco mixes and 30%-21% as back gas while keeping deco to 15 min or less.
Or what is the max. depth I can still get 30 min of bottom time when doing 15 min deco or less.
B. Same question but with air as back gas and 100% for deco only.
2. How effective is accelerated deco. i.e. does it make sense to use it to cut
10 min deco down to say 5 or is it only adequate to cut 40min to 20min?
Or in other words by what percentage can I cut my deco time.
(I plucked those numbers out of the blue and am not sure how realistic they are but you get the drift)
3. How realistic is to everything on air as a back gas I stage with100% O2 for deco?
Then I would only need to O2 clean one reg. an no cylinders as the one would always get 100%. I also won’t need an analyser as everything I will ever use will be 100% or 21%. (Temporarily at least until I move back to where I can get up to 40 pre-mixed and then would buy an analyser) |
1a. More than on air. vPlanner will tell you how much.
1b. More than on air but possibly not as much as your nitrox mixes.
2. Quite. vPlanner would show you.
3. I wouldn't. Air on the back and a rich mix is better because you can swap onto it deeper.
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| Originally Posted by Step I guess the above depends on how conservative I want to be. The answer is not very.
I’m interested in what you’d be happy with, for now, and will decide what level of risk I’m happy with after I have done the course.
(as I’m not sure how conservative what I’m doing now is maybe that would be a good reason to do the course already?) |
Sounds like you're looking for more risk than some of use would consider necessary. Do the course and you'll at least understand the risks rather than taking the rather high risk of relying on Internet advice.
Hope that helps