Sean, a stage bottle is not the same logistically as independent
doubles on the back, because in the event of a reg failure on a stage
you can still breathe from it by manually operating the tank valve. 
Stages of bottom gas are typically breathed to extend bottom time.  In
some cases, stages are breathed from exclusively, saving the back
gas only for wing inflation and emergencies.

-Sean


On Tue, 31 Aug 1999 21:32:40 +0600, Sean E. wrote:

>
>I'm going to stick my head out to ask what may be an RTFM question
>(related to this topic).
>
>Under normal conditions, is it appropriate to travel (swim n/s/e/w/u/d)
>while breathing off of a stage bottle, instead of the tanks on your 
>back (assuming the stage bottle contains the same mix)?
>
>Or should that only be done if you have a problem with that tanks/regs
>on your back (leaving the stage entirely for deco's, etc.)?
>
>Sean E.
>
>--
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>"I remember when we didn't have these fancy-assed Weeeeeeeeeeeb
>Browers.  When I was I boy, you had to use FTP to get anywhere on
>the internet.  And half the time they didn't have anonymous ftp,
>so you had to hack in to the site.  But that was easy then 
>because everyone's root password was 'admin' anyways.  Oy! We 
>were real men then!" - Me
>
>Sean Ennis <ennis@es*.ca*>                  No spam-mail please
>--
>Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
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