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Date: Mon, 13 Jul 1998 23:21:43 -0400
From: "Thomas A. Easop" <tomeasop@mi*.co*>
Organization: EPI
To: KybrSose@ao*.co*
CC: DEnig@ao*.co*, techdiver@aquanaut.com
Subject: Re: bondage wing challenge was
KybrSose@ao*.co* wrote:

>  Dan,
>
>   What I want to know is the facts behind the wing. Tell me what psi  is
> required to activate the overpressure dump and how you place the bungee to
> avoid causing this problem. How do you do it?
>
> No one else has an answer to that one tough guy, and it seems like a
> reasonable question.
>
> I'm more interested in preventing more deaths than in name calling and counter
> productivity.
>
> You say under stress you'll revert to your training.  How can you train to
> avoid false overpressure dump valve activation?

Al:Here is what I do. Prior to each and every dive, I fully inflate the wings to
the max. The overpreasure relief valve activates. I look at the wing to see if
its
fully inflated all the way. If they are, then the bungees are not "too tight" as
to cause the valve to activate before the wing has maximum lift. If it works at
1
ATA it works at any ATA, no measuring of psi's needed.

Someone suggested the temperature of the water will affect elasticity of the
bungees. I'm sure that is the case. However, I have dove my bondage wings in
cavernss with water temps of 2-4 deg C/38-39 deg F, and frozen lakes. While I've
hadn't the need for maximum lift, I never encountered a problem.

Maybe this will make for a good experiment come winter. Check to see if the
bungee
prevents max inflation while on an ice dive. I too am interested in preventing
needless death, especially my own.

Tom

> Al Marvelli    aka  KybrSose@ao*.co*
>
> In a message dated 7/13/98 7:33:38 PM Eastern Daylight Time, DEnig writes:
>
> > No Al......You prove that the OMS wings have problems. While you are at it,
> > produce documented proof that in all these recent deaths, OMS wings were in
> > use by each and every one of these divers.
> >  If you wish to tie OMS wings in as a factor in all the deaths, then YOU
> > better be prepared to prove that they were in use by all the divers at the
> > time they died. Others don't have to prove that they work.
> >  Granted, because I use OMS wings you will probably consider me a "stroke"
> > but:
> >  1) I know what equipment works for me
> >  2) I know what my abilities are and don't push those limits
> >  3) I plan my dives and dive my plan
> >  4) I practice for the unexpected (Murphy loves to dive too)
> >
> >  While I've never faced a life and death situation in the water I have had
> > minor, irritating "mishaps" that I've dealt with, learned from and practiced
> > dealing with.
> >  I've faced enough "life and death" situations on land to learn and know
> that
> > training with your equipment, being familier with your equipment and
> practice,
> >  practice, practice can mean the difference between life and death.
> >  Under stress, we humans revert to how we are trained/practice.
> >  Dan
> >  *****************************************
> >  Press hard it's 5 copies..........................
> --
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--
Guns and Armour of SCAPA FLOW
1998 Underwater Photographic Survey of Historic Wrecks
http://www.gunsofscapa.demon.co.uk


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