Average Gas Consumption
- Thread starter scubadada
- Start date
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Mike1967
Contributor
Haven't I already told you to piss off tonight?
Blackcrusader
Contributor
Haven't I already told you to piss off tonight?
LOL The real secret to improving your sac rate is to move to a country where the mountains peak near 4000m and live up in them as I do.
You get used to the thin air and less oxygen. Then when you go diving your sac rate is suddenly better. As I travel up and down the mountains my ears are also used to adjusting to different pressures and when diving I never have problems with that either.
Mike1967
Contributor
Do you have a spare room for me? Oh, and a job???
Blackcrusader
Contributor
Mike1967
Contributor
Erm nope
OP
- Messages
- 20,635
- Reaction score
- 20,174
- Location
- Philadelphia and Boynton Beach
- # of dives
- 1000 - 2499
My lowest RMV has been 0.27 cu ft/min, 7.6 L/min. My average RMV over the last 1,500 dives is 0.36 cu ft/min, 10.2 L/min. I use 0.44 cu ft/min, 12.4 L/min for gas planning, that covers 95% of my previous dives, pretty conservative.
OP
- Messages
- 20,635
- Reaction score
- 20,174
- Location
- Philadelphia and Boynton Beach
- # of dives
- 1000 - 2499
Glad you voted in the poll. Not many divers with an average RMV <0.3 cu ft/min, 8.5 L/min
Blackcrusader
Contributor
Glad you voted in the poll. Not many divers with an average RMV <0.3 cu ft/min, 8.5 L/min
We get better with age like fine wines yes? I never kept track of SAC rates until several years ago. I really started once I got my Perdix as people would always ask me and I never really knew. They would just look at my SPG during and after the dives and scratch their heads why some large fat bastard was so good on air. Actually I spent time with a German Instructor who is even better than I am on air, and he really got me into my dive like a corpse with not moving around. So my SAC rate is really only from my last few years of diving before it was much higher.
One time after the days diving was done several people were smoking on the street outside of the dive center. One woman asked me why I seem to be so good on air. So I told her I used to smoke 2 packs a day and got lung cancer and had one lung removed so now I use less air. I also told her smokers are used to less O2 so we don't suffer from CO2 Hypercapnia buildup like healthy people.
She ran back into the dive center to tell the owner did he know about this and how am I medically fit to dive with one lung? He is a good friend and gave me **** for telling porky pies and I took off my T shirt to show her no surgery had been done.
By the way I know several Philippine dive master guides that are better on air than I am. They normally do 15 - 20 dives a week for a living though. They don't log their sac rates though just the dives. That 93 minute wreck dive log I love to post was with a guide better on air than I am. He said I am the only customer he has dived with that could do that dive and still have 50 bar left. I think he had 60. They also do not post on forums.
