I agree, scares me too!!  I won't debate the usefulness of Ponies as I
have my own opinion and don't wish to throw it into the mix.  I thought
the practice you were referring to was only done with doubles?  The idea
of breathing off the pony when not in an emergency scares the hell out
of me.  I guess you guys get it filled each time when you re-fill your
mains?

Safe diving,
Art.
art.paltz@r2*.co*
Last Dive 1/10/98, Klondike Rocks (lobster dive), 
    NJ 75ft/65 min bottom time, 43 degrees F, 40% bottom mix.
    Damn Weather!  And we were doing so well for a while there!!


	-----Original Message-----
	From:	Jim Cobb [SMTP:cobber@ci*.co*]
	Sent:	Monday, January 26, 1998 9:42 AM
	To:	David Shimell (shimell)
	Cc:	Tech Diver
	Subject:	RE: Pony Bottles

	David-

	You are basically describing diving with independant doubles, a 
	horrifying practice which is still championed by you Brits and
other 
	Europeans.

	But I understand that a Hogarth revolution is taking place over
there, 
	much to the dismay of the ID (stroke) crowd. I hope you all
don't get 
	stuck on tradition over there.

	By the way, what you describe below scares the bejeezus out of
me. Are 
	you sure you worded this correctly?

	   Jim


	On 1/26/98 7:50 AM David Shimell (shimell) wrote:

	>BSAC train the following practice.  Breath your primary supply
down to   
	>the reserve level (i.e. the pressure at which you planned to be
back on   
	>the boat), then switch to the backup supply (pony in this
case).  This   
	>ensures that the reserve in your primary remains intact at this
point and   
	>that the correct functioning of the pony is confirmed.



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