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This has to be a troll, but just in case it's not:  

You're probably going to be breathing the 50/50 deeper than the O2, and
hence you'll consume more gas.  I think we learned about this concept in OW1
if I'm not mistaken.   ;-)

Bill


		-----Original Message-----
		From:	Dixieboca@ao*.co* [SMTP:Dixieboca@ao*.co*]
		Sent:	Wednesday, March 17, 1999 10:51 AM
		To:	kirvine@sa*.ne*
		Cc:	cavers@cavers.com
		Subject:	Re: o2 for ocean deco


		>A 40 of 50/50 and a 30 of oxygen makes ocean deco diving a
lot more fun
		>and much more practical.

		Why?

		It seems to me that you should reverse those and use 2000
psi of O2 in a 40
		and your 50/50 in a 30.

		My logic behind this is the volume of gas you would carry in
both bottles
		would be approximately the same:  The 40 filled to 2000
would have 26.66 cu ft
		of Oxygen and the 30 filled to 3000 would have 30 cu ft of
50/50.

		Please explain to me why I would want to do it reversed and
carry only 20 cu
		ft of O2 and 40 cu ft of 50/50.

		thanks in advance,

		Ted

		  

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