I change regs every 500 psi.
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I do not understand this "cave fill" thing at all.
Cylinders do have their rated fill pressures for a reason. Stick to them. A fill is a fill is a fill.
Open water or overhead should make no difference. The cylinder remains the same.
You can do a cave dive as well with 3600 psi as with 1800 psi. Just turn around when one third of the gas (or less) is consumed.
You’re in Europe. Not something you have to deal with.
when I went to SM I learned the rule of 1/6ths
To my thinking, it would be to have first and last usages based on 1/6. Meaning: R1/6, L2/6, R2/6 (with the turn half-way through that), L2/6, finishing with R1/6.What do you mean by the rule of 1/6ths?
here is an article you might find useful- see later postNow that Shearwater computers allow to set a tank switch reminder, how many PSI/bar delta would you recommend switching at? I am thinking 46 bar which would mean switching 3 times to get to the 1/3 reserve (assuming a starting pressure of 207 bar) but it would be easy to set it up to lower pressures, e.g., 34 bar for 4 switches, 27 bar for 5 switches, 23 bar for 6 switches.
Keen to know if you would make more frequent switches now that it’s easy to track consumption without checking the SPGs every few minutes.
To my thinking, it would be to have first and last usages based on 1/6. Meaning: R1/6, L2/6, R2/6 (with the turn half-way through that), L2/6, finishing with R1/6.
This puts the long hose in use at the start, turn, and end, arguably the more risky points of the dive.
It also cuts the buoyancy differences in half (compared to thirds.
Because it was SM, you divide your gas in 1/6ths to maintain balance/trim and to improve awareness of two Independent SPGs. I imagine this would be the same with Independent BM doubles. As I dive rec I don't know if it is borrowed from tec or something my instructors recommended on their own.What do you mean by the rule of 1/6ths? It sounds good but it is an unfamiliar term to me.
Does it refer to gas switches?