Joel-

I find it hard to believe that these guys are doing complex technical 
dives without even a basic understanding of partial pressure physics.

>to step it up a stroke notch -- check out all of the "remote isolators"
>that are typically found with the pony.

Oh, and don't forget the AirII's on both inflator hoses.

   Jim

Sender: Joel Silverstein  Date: 8/16/99 7:50 PM

>Jim, 
>
>That's not it -- they just dont understand that its not needed. They dont
>understand partial pressures, they dont understand that you dont need a
>hypoxix mix for a 250 fsw dive, you don't need convoluted buffonery. It's
>just one more piece of junk on an already overweight rig.  Now if you want
>to step it up a stroke notch -- check out all of the "remote isolators"
>that are typically found with the pony. 
>
>regards, 
>jds 
>
>At 05:37 PM 8/16/1999 -0400, Jim Cobb wrote:
>>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?
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>> -------------------------------------------------------------------
>> Learn About Trimix at http://www.cisatlantic.com/trimix/trimix.html
>>
>>
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>
>


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