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Date: Tue, 13 Feb 2001 10:33:56 +0100
From: mat.voss@t-*.de* (Matthias Voss)
Organization: Harry Haller Memorial Fund
To: Stefan Bolka <sbolka@er*.co*>
CC: GUE Mailing List <quest@gu*.co*>, techdiver@aquanaut.com
Subject: Re: Tank question

Stefan, 
actually austrian bottle manufacturer Heiser released early this year
10l steel bottles wrapped with carbon. These were claimed to be 30 %
lighter than normal ones, which would make them probably great stage
bottles. Fireworkers bottles have an aluminium kernel. Their low weight
will have to be taken in account by adding lead. 
They have different failure modes. In a failure , they will not explode,
but spray with bubbles. 
There may be a future for these bottles in rebreathers, ( MK 15 .**for
instance.
Matthias

> Stefan Bolka schrieb:
> How come we don't use carbonfiber wrapped high pressure cylinders?
> They are smaller and get hold gas at a higher pressure safer, hence
> why the fire department uses them (so I was told).  Does anyone have
> any insight on this?
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