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Subject: Re: OMS bondage wings
Date: Tue, 20 May 97 09:15:08 -0400
From: Jim Cobb <cobber@mi*.co*>
To: <DIVEACE@ao*.co*>
cc: "Cavers Mailing List" <cavers@ge*.co*>,
     "Tech Diver"
On 5/19/97 8:55 PM DIVEACE@ao*.co* wrote:

>Sam,
>
>The bondage dose not reduce the amount of bouyancy that the bladder has. If
>you have them  on properly. The bands are attached while the bladder is full
>inflated. So this still allows full infation of the bladder without reducing
>the amount of lift. Also the bondage keeps the bladder small and reduced drag
>in the water. It doesnot increase the the amount of effort needed to inflate
>the bladder orally. 
>
>David Burroughs
>OMS

The bondage causes 2 problems. 1) they cause more drag, not less. All 
thoses bands and bulging bladder material are not the least bit 
streamlined. 2) they keep the center of buoyancy below your doubles 
rather than at the sides, and keep the air from redistributing naturally 
when you change position. These problems make your rig unstable and hard 
to maneuver in. 

The need for double bladders is debatable. Is the possibility of bladder 
failure such that you have to introduce *additional* failure points 
(another LP hose, inflator valve, yet another bladder)? Plus the 
additional task loading of having to deal with multiple inflators? I 
don't think so. And the thousands of hours put in by the WKPP and other 
divers on the single bladder wings seems to bear this out.

   Jim
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