Bill-

I think that the main rational on using the travel air pony is to 
"conserve" your backgas trimix so you will have enough left to do a air 
top for the next dive. I know this is a dumb argument, I am just pointing 
it out.

 Jim

Sender: Bill Mee  Date: 8/16/99 2:15 PM

>JT,
>
>I thought I smelled something funny here and I should have guessed that it
>had the whiff of air.  It seemed a bit odd that the only thing which was not
>reported was the gas pressure and the regulator dispositon of the Charlie's
>pony bottle. Naturally, I thought that the idea of an air pony was beyond
>the pale stupid, but when I noticed the photo of this deviant behavior being
>proudly displayed on Christina Youngs website I began to suspect that the
>practice is more widespread than is freely admitted.
>
>After reflecting on the matter, it became clear that the "air pony" was the
>probably the rat in the woodpile. IANTD still endorses the use of air to 50
>metres, which is the approximate depth of the top of the Doria.  I will bet
>that the fear of breathing hypoxic trimix at the surface and the fear of
>breathing an hyperoxic deco gas past it's breathable depth is leading people
>to use air as a travel gas. As George clearly pointed out this is not so
>smart. If one gets into any kind of cluster on the way down, which is
>usually where they occur, then the problem is vastly compounded.
>
>What never ceases to amaze me is that you guys love of the personal
>preference inevitably leads to the institutionalization of a farm animal
>practice. What other little secrets do you guys have in your tank boot?
>
>-----Original Message-----
>From: kirvine@sa*.ne* <kirvine@sa*.ne*>
>To: techdiver@aquanaut.com <techdiver@aquanaut.com>
>Cc: wwm@sa*.ne* <wwm@sa*.ne*>
>Date: Monday, August 16, 1999 11:29 AM
>Subject: Doria Deaths - Let's dive some air
>
>
>>JT, et al, let's get back to your recent Doria recovery. You all keep
>>skipping the fact that this guy had an air bottle ponied between his
>>doubles. Forgetting that this is too stupid for anyone but Christina
>>Young, who has this cluster on her web site in living color, maybe we
>>need to look a litle closer at just how this probably came into play.
>>
>>  The guy was diving mix, right? Well, I have noticed that the farm
>>animals tend to tell people to use a "travel gas" from the surface,
>>rather than just drop down. Is there a chance that our boy did this with
>>his air pony and then effectively was diving air at depth when he had
>>his "problem"? Even when you switch to mix, it takes a couple of minutes
>>to take effect, meaning that even if he switched back before he hit
>>depth, he was still being effected. If one really has to do this, one
>>needs to do it with another trimix,and then hold position for two
>>minutes before continuing the decent, but that still should not be
>>ponied between the back tanks with the regs everywhere.
>>
>>  Come on JT, what do you think? I realize that this is so stupid as to
>>be criminal, but I think it happened.  How much gas ( air ) was left in
>>the pony, guys? Can you tell us that?
>>
>>  By the way, the concept of a pony is a vestigal throwback to the days
>>of single port manifolds, where a pony was indeed a necessity. However,
>>as of about 1971, when the Benjamin ( dual port) manifold was created,
>>this became nonsense, and become totally useless when the isolator was
>>added to the dual port manifold. Only the worst boat monkee fails to
>>understand this.
>>
>>  Then to put air in the pony is too much. Then to not know what
>>happened, and to report the accident while leaving out the most
>>important information, is why you guys keep having accidents.
>>
>>  JT, are we going to stick with the bullshit, or are we going to start
>>learning something. Your call - make your move, tell us what really
>>happened. Where was the pony reg ( and what as the reg config) when you
>>recoved the body, and how much gas (air) was left in the pony?
>>
>>
>>
>
>


 -------------------------------------------------------------------
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