Falco
Contributor
When you activate the doubles does it automatically multiply by 2 the tank data?
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selytch:As you noticed the "air weight" (change in buoyancy) is different between same volume cylinders. One reason is the actual data from the manufacturers that varies. The other is that the buoyancy of an empty AL tank was measured actually at 500PSI. In case of AL80 thats about 13cu.ft. of air, or about 1# (1 cu.ft. of air is 0.0807#).
ZzzKing:The other reason might be because an AL80 does not have 80 cuft of air in it like a steel 80 does.
One thing that might be nice is the ability to figure needed weight/lift in saltwater as well as freshwater. I know for me that the difference is 6 lbs. and the calculator gave me 9.9 lbs. which would be dead on if I were in saltwater. Most of my diving is in freshwater and I need 4 lbs. I was going to add this myself but of course it was locked to prevent people like me from monkeying around with it. I also want to reformat so it fits on my PDA screen. How do you unlock it?
selytch:There are too many unknown variables to me for freshwater, but if somebody knows tank buoyancy in freshwater it can be easily added.
As of protection - just go to Tools-Protection-Unprotect sheet. There's no password required - just to prevent accidental changes. Email the final version to me as well, if you don't mind. Maybe I can use some of your ideas) - with your name next to them
ZzzKing:Can't be sure what I'll come up with but it will be viewable on a PDA screen...
I made a neat little SAC Calculator/Bottom Time Calculator you might be interested in. PM me if you want it. I might try to add the bouyancy calculator to that.
ZzzKing:Can't be sure what I'll come up with but it will be viewable on a PDA screen...
I made a neat little SAC Calculator/Bottom Time Calculator you might be interested in. PM me if you want it. I might try to add the bouyancy calculator to that.