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At 9:08 PM 8/31/95, w wittman wrote:
>At 4:56 PM 8/31/95, Scott Cherf wrote:
>
>
>>
>> This is interesting.  I've just switched to a pony config and I took
>> my shadow off entirely in favor of a Mk15/D400 on the pony.  I have to
>> admit that one of the reasons I took the shadow off was to reduce the
>> amount of crap hanging off my body ;).  Are there other divers that
>> use a safe second on their main reg as well as a pony reg?  If so,
>> what are the reasons?
>
>
>one reason to use and octopus AND a pony (i'm not saying i do it, just
>mentioning the rationale) is that this reserves the pony as a PERSONAL
>bailout ...keeping sharing with an out of air partner to the main supply

I'd classify this as 'engineering for the worst case'.  It's only a concern
in the event of a double failure (your partner and your primary reg).

If my partner has a problem, we're going to the surface.  The chance of
me having a simultaneous failure during the ascent is small enough that
I'm willing to stop diving before I begin to worry about it.  I suspect
that the probability of a low pressure hose failure on my main *while*
someone is using my pony is about equal to the probability of a low
pressure failure on my safe second *while* I'm using my primary (and
someone else is using my pony).

All that aside, I don't plan on sharing air.  The pony is mine.  Get your
own :).

S.

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