RE: [PSUBS-MAILIST] Viewport for K350

["Jay K. Jeffries" <bottomgun@mindspring.com>]

Years ago, George Kittredge took one of his subs (a K-350 or K-600) to what
is now Cradderrock, the Navy's testing facility outside of Washington, DC,
for a pressure test.  The hull experienced no damage well past it's
limits...it was the viewport that finally imploded.  THICKER IS BETTER!
Respectfully,
Jay K. Jeffries



-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Dan H.
Sent: Tuesday, March 21, 2006 6:11 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Viewport for K350

Bob,

Things haven't changed in the plastic world.   I don't know who told you, 
you don't need plexi that thick, but if I were you I'd ask this guy to sit 
in your sub on it first deep water test to report or any problems with a 
thinner Plexiglas.

The main viewport is 1.500 inches thick.  I know some K-350 builders that 
have substituted 2 inch thick Plexiglas.  Use what the plans call for or 
thicker.  Even if it's over kill, it's one less thing to worry about when 
your diving it.

Dan H.




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