Re: [PSUBS-MAILIST] Using a commercially available hatch as an emergency esca...

[Coalbunny <coalbunny@onewest.net>]

Yes Ray, I realize that.  I was talking merely of my previous theories. 
No, I certainly do not care to experiment in such a case.  I am curious
that the idea would work as I described.
Carl


Ray Keefer wrote:
> 
> Hi Coalbunny,
> 
> Your sub is as safe as the weakest link. If you have a viewport that
> is only as good as 200 feet, it doesn't matter if the hull can make
> it to 900 feet. The watertight interity will already be compromised.
> 
> In the case of a 200 foot viewport, go no deeper then 100 feet for a 2:1
> safety factor. If 100 feet isn't enough, forget about reinforcing the
> viewport. Just build it better in the first place. Design it for 900 feet
> for that 900 foot hull.
> 
> Regards,
> Ray
> 
> > Date: Wed, 08 May 2002 11:12:09 -0600
> > From: Coalbunny <coalbunny@onewest.net>
> > X-Accept-Language: en
> > To: personal_submersibles@psubs.org
> > Subject: Re: [PSUBS-MAILIST] Using a commercially available hatch as an
> emergency  esca...
> > Content-Transfer-Encoding: 7bit
> >
> > Now I'm curious.  If a sub's hull can do a depth of say, 900 feet, but
> > is limited because the glass/lexan/plexiglass won't go below 200 feet,
> > wouldn't it help some if you were to back the porthole material with
> > something like an expanded steel screen?  That way, in the event of an
> > accident, the porthole does not explode inward.  Yes water does get in,
> > but not in the explosive manner.  Of course this is theory only, so tell
> > me where this idea is wrong.
> > Carl
> >
> >
> > DBACKIDS@aol.com wrote:
> > >
> > > Quick note on using Lexan: If you plan on cutting it yourself, be careful,
> > > for it shards like a glass would, not melts right through like plexi would.
> > > (I built a 5" x 9" x 3' long "wet wind tunnel" (a wind tunnel, with water
> > > instead of air), and found out that plexi, when cut fast, practically melts
> > > itself back together, while lexan will shard off unless it is covered or
> > > taped. It was a fun project, too) Ok, I went off-track, but you got the
> > > point.
> >
> > --
> > Watch your thoughts; they become words....
> > Watch your words; they become actions....
> > Watch your actions; they become habits....
> > Watch your habits; they become character....
> > Watch your character; it becomes your destiny.

-- 
Watch your thoughts; they become words....
Watch your words; they become actions....
Watch your actions; they become habits....
Watch your habits; they become character....
Watch your character; it becomes your destiny.