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From: "William Allen" <william@ca*.co*>
To: "samuel frushour" <frushour@in*.ed*>, <billy@bd*.co*.au*>
Cc: <techdiver@aquanaut.com>, <cavers@ca*.co*>
Subject: Re: Bungy Wings - The Awful, Horrible Truth From One Who Knows...
Date: Wed, 8 Sep 1999 17:30:44 -0400
I dive the Northeast (New Jersey) I used to see quite a few bungie wings a
few years ago. However at this point it's not very common to see them (at
least on the boats I dive). With all the fine alternatives (AUL, Dive rite,
Halcyon) the oms bungie have really become a semi endangered specie. I would
love to see the OMS sales figures on them. Most times when a wing gets a
hole the bungies are not a real major player as far as the deflation, the
water pressure will deflate the wing, of course I ask why have them if you
don't need them. The real "killer" is the inflation with the bungie cords,
to tight and you can't get all your lift or inflate them manually. So off
you go in the water with your wet suit, steel tanks, bungie wings. Hit the
inflator, bungies to tight, can't get the lift, the op valve dumps once it's
filled. You have no more lift so whats next? Another dive the power inflator
won't work try and fill the wings to capacity manually. O by the way when
did the Mid west become the hot bed of diving activty.
-----Original Message-----
From: samuel frushour <frushour@in*.ed*>
To: billy@bd*.co*.au* <billy@bd*.co*.au*>
Cc: techdiver@aquanaut.com <techdiver@aquanaut.com>; cavers@ca*.co*
<cavers@ca*.co*>
Date: Wednesday, September 08, 1999 5:14 PM
Subject: Re: Bungy Wings - The Awful, Horrible Truth From One Who Knows...


>"Greasy piece of shit"... or just what are bungied wings???
>Besides the obvious reasons hans touched on for no bungies (yes, this has
>been beat to death but it is really important) I will reiterate that you
>do not want squeezing cords to deflate your buoyancy device for any reason
>and YOU must be in complete control of when and how much gas leaves your
>wings.  Of course another reason you do not want these bands is that they
>present interuptions to the surface of the wing resulting in more drag
>while swimming.  As for the lower dump, would you'all swim like a newbie
>diver with your feet down causing a lot of drag pushing a lot of water out
>of the way (or fighting current in a feet down position)??? In a
>horizontal postion, like you should be most of the time, that lower dump
>can be useful to let air out of your unbungied wings.  Being from the
>midwest, we folks do have a natural suspicion of easterners and especially
>northeasterners; and such tomfoolery as bungied wings only lends credance
>to that suspicion.
>The first person that whines about the northeast being special because of
>the deep cold water can just stick it as they are not the ony ones to dive
>in such conditions. Many of these people just want to perpetuate thier
>line
>of limited thinking.
>
>Time to go back into reclusion and let the fire fly.
>
>Sam Frushour
>
>
>On Tue, 7 Sep 1999 billy@bd*.co*.au* wrote:
>
>> Date: Tue, 07 Sep 1999 22:37:48
>> From: billy@bd*.co*.au*
>> To: techdiver@aquanaut.com
>> Cc: cavers@ca*.co*
>> Subject: Bungy Wings - The Awful, Horrible Truth From One Who Knows...
>>
>> Date: Tue, 24 Aug 1999 02:26:44 +0200
>> From: Hans Petter Roverud <proverud@on*.no*>
>> Subject: Bondage wings
>> ---------------
>>
>> It seems safe to say that opinions vary from "This is what we see dead
>> divers wearing" to "These wings are the design used by most Northeastern
>> wreck divers and we have no problems whatsoever". For those who think I'm
>> beating a dead horse -- I am, but I'm trying to add the plausible reason
>> why "bondage" is no good idea.
>>
>> I know a lot divers using "bondage" without any incidences. I also know
one
>> who jumped in and found himself on the bottom at 100' in no time with a
>> wing that didn't hold air. What happened? A low pull dump had gotten
wedged
>> behind his backplate and was stuck. Since the bungee cords work as an
>> auto-deflate, any minor leak will let the air out of the wing in no time.
>> With a non-bondage wing a low dump valve stuck open wouldn't actively
purge
>> the wing -- it would just bleed air out as the wing approached full
volume.
>> You'd still get ample buoyancy in a horizontal, slightly head-up
position.
>> The same would go for any otherwise insignificant puncture or faulty
fitting.
>>
>> Thus, I believe the combination of bungee auto-deflate and jammed pull
>> dumps to be _the_ deadly combination. I don't choose either feature. If
you
>> do, please get rid of the balls on the pull cords or the bungee. These
>> features in combination may give you a catastrophic failure. Why not get
>> rid of both? Would for instance an OMS be unwieldy without the bungee?
>>
>> At any rate, next time bondage wings won't inflate and hold air, check if
>> the pull dumps are stuck in the open position. BTW, what purpose does low
>> pull dumps really serve? Without that bungee assisted auto-deflate one
>> would never be able to purge air by pulling a low dump anyway -- since
air
>> likes to float in water you'd have to swim head-down to bring the air to
>> the low dumps. (OK, so maybe you do assume an inverted position sometimes
>> but do we really need alternative dumps for any conceivable posture?)
>>
>> Rather, dump air through the corrugated hose and lose those pull dumps,
the
>> bungee or preferably both! The fact that it's all hunky dory as long as
the
>> balls of the pull dumps don't snag or get wedged doesn't mean it's a safe
>> combination. You've got an auto-deflate wing and _any_ minor leak will
>> purge it. The bungee puts a constant strain on the wing and will collapse
>> it whenever the opportunity presents itself.
>>
>> If you elect to keep bungee as well as pull dumps, at least check that
the
>> wing holds air before you jump in. If a pull dump is jammed open you'll
>> know the moment you try to fill the wing.
>>
>> regards,
>>
>> Hans
>>
>>

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