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Date: Mon, 19 Jan 1998 09:25:13 -0500
From: "G. Irvine" <gmirvine@sa*.ne*>
Organization: Woodville Karst Plain Project
To: w wittman <wwittman@we*.co*>
CC: techdiver <techdiver@aquanaut.com>, cavers@ww*.ge*.co*
Subject: Re: Added info re three missing in WPB
Wings with bungees are ridiculous- they will exert pressure against the
inflation, and cause the opv to dump well below what the ambient
pressure would. They are obviously going to present a massively
dangerous static lung load if you try to inflate them manually.

 If you tie them too tight to start with, which many of these dopes do
because they think it is less "drag", they will not give much lift.
There have been other acidents associated with this, so I believe they
are now shipped out without the bungeess tied, so this is done at the
dive shop, or by the end user. Hmmmmmmmmmmmmmmmm...........

 The drag issue is realy FAS - the bungied surface causes massive vortex
shedding and increases drag, not to mention the entangling capabilities
of all of the bungee and other dangling stupidity associtated with these
wet dream wings. If you have to add volume to get lift, it will be the
same volume on any wing, so you want the wing whos shape most closely
conforms to the gear, as does the Dive Rite wing which lays tight to the
tank and wraps up around it, with smooth surfaces, already in the slip
stream.

 There is also the problem of two inflators on some of these, a real
boondoggle . You can immagine the degree of clustery that get set up
with that arrangement.

 The fact is that if you dive the right gear to start with, none of this
tekkie stupidity is necesasry. If you dive steel in the ocean, use a
drysuit. If not, use aluminum tanks. Real simple, real efficient. 

 If you dive in the ocean, use aluminium deco bottles. Real simple. We
found this out a long time ago, we execute these dives with no problem,
and you can ask Capt Jim Mimms, he has watched this for years, as have
his predecessors and succesors in the dive boat business. My guys cause
no problems other than hammering the strokes on the boat.



w wittman wrote:
> 
>
> George, no doubt you have done before...but could you elaborate on "bondage
> wings" and your objection to them?
> thanks
> 
>
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