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Date: Tue, 18 Apr 2000 06:03:44 -0400
From: trey@ne*.co* (Trey)
To: David Benson <dbenson@ma*.co*>
CC: techdiver@aquanaut.com
Subject: Re: SS vs Aluminum backplate affecting trim
David, steel plates defeat the whole object of a balanced rig when using
a wetsuit. Steel plates are used with a drysuit as additional weight to
offset the insulation. 

I have both , and generally use the steel in salt water with C-4 and
steel, or in fresh wiht C-4 if I have my Faber tanks instead of my
Pressed Steels. 

Any tank is more buoyant in the bottom, and wings need to give more lift
at the bottom and almost none at the top since the lungs do that. 
Weight on the hip is insignificant with the right wings.

David Benson wrote:
> 
> Now that I've experienced the DIR configuration (ie seen the light) I'm
> trying to decide between a SS or an aluminum backplate.
> 
> For the time being my typical configuration will be with a single AL80. Many
> of my dives are trips to tropical waters where I usually wear a 3mm wetsuit
> w/ 6lbs of weight. For this use the AL plate seems ideal, to lighten my
> luggage. Plus I'd be concerned with being negative and not having any
> ditchable weight. For local diving I usually wear a 7mm farmer john + hooded
> vest and 18lbs weight. At some point I'd like to get a dry suit (may be
> sooner, rather than later) and work into doubles.
> 
> I really liked the way the backplate & wing allowed me to stay horizontal.
> How much of this effect was due to the improved wing design vs taking 6 lbs
> off my hips by using the SS backplate?
> 
> Thanks.
> 
> David
> 
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