Re: [PSUBS-MAILIST] air weight

["Rick and Marcia" <empiricus@telus.net>]

Salut Pierre - comment ca va?

The specific weight of air0.001293.

That translates into about 0.0806 lb per cubic foot.

You have 220 cubic feet X 0.0806 lb = 17.7 lb.

Over the course of a dive the loss of that 17 lb. would make your boat
positively buoyant.

But, it would sneak up on you.  That's a lot of air to breathe.  Unless of
course you complete a number of dive sequences and use your compressed air
instead of pumps to blow ballast.

Hope this helps.

Rick
Vancouver, Canada
(formerly de Montreal)


----- Original Message -----
From: "Pierre Poulin" <pipo305@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, September 03, 2004 8:57 AM
Subject: [PSUBS-MAILIST] air weight


>
> Hello fellow PSUBser,
>
> Does anybody know how much air weight? I will have 2 tank of 220 cubic
foot
> of compressed air. How much will be the difference between empty and full
> cylinders. Is it negligeable?
>
> Thanks for the help!
>
> Pierre Poulin
>
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