From: "Smyth, Alec" <Alec.Smyth@compuware.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: RE: [PSUBS-MAILIST] rescue buoy
Date: Mon, 4 Dec 2006 12:57:43 -0500
Talking about the cord, I found some interesting stuff. There just isn't
much space on the K250 between the rear of the coning tower, the open
dome, and the lift pad. So the diameter of the buoy with cord on it had
to be small. At the same time, the buoy core had to be as large as
possible so it would float. Those two things meant I needed really thin
cord. What I settled on was canopy cord for parachutes. It's only about
1/8th of an inch, but has a break strength of 1,000 lbs. I got it online
at some skydiving supply site... sorry, I didn't keep the link.
Alec
________________________________
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of
vbra676539@aol.com
Sent: Monday, December 04, 2006 12:31 PM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] rescue buoy
Joe,
HBOI uses something similar, albeit longer. The have a biggish buoy,
collapsed, that is inflated from inside and starts the process on its
own, with only a single air penetration. Something else we probably
ought to look into is the cord they used, which is, as I recall, only an
eighth inch in diameter. It has a dacron cover, kevlar core and not much
stretch. Probably pretty cheap, too, huh?
Vance
-----Original Message-----
From: joeperkel@hotmail.com
To: personal_submersibles@psubs.org
Sent: Mon, 4 Dec 2006 12:06 PM
Subject: RE: [PSUBS-MAILIST] ID this picture?
Thanks Jon, this answers all!
I see a good use for the space in the aft part of my sail.
Here in S. Florida, surface support could scream for help on the VHF,
which would arrive in relatively short order,.... should you be disabled
on the bottom,... and unable to bail out for some reason. And even if
you do bail out, it would be nice to find the thing again to try and get
it back!
A locator buoy to follow down to the sub would be a wise
addition...albeit yet another...oh well... penetration. Worthwhile I
would think.
Thanks again guys!
Joe
>From: "Jon Wallace" <jon@psubs.org <mailto:jon%40psubs.org> >
>Reply-To: personal_submersibles@psubs.org
<mailto:personal_submersibles%40psubs.org>
>To: <personal_submersibles@psubs.org
<mailto:personal_submersibles%40psubs.org> >
>Subject: RE: [PSUBS-MAILIST] ID this picture?
>Date: Mon, 4 Dec 2006 10:32:00 -0500
>
>
>Look at the right side of the spool where the bracket is welded to the
sub.
>Look at the air line that feeds the rear ballast tank and just behind
it
>you'll see the thru-hull fitting. Look at that more closely and you can
>see
>the shaft coming through the thru-hull, and attached to it is a flat
bar.
>You can see one end of the shock cord attached there. From inside the
sub,
>Harold just twists a lever and either the ends of the shock cord spring
>free, or they are cut by the shearing action of the flat bar pulling
the
>cord against the bracket above it. I seem to recall Harold saying the
>shock
>cord was cut by this action thereby assuring they would release
completely.
>
>There are two other views at
>http://www.psubs.org/convention/2003/pics.cgi?pics/k350-3/PDR_0095.JPG
>http://www.psubs.org/convention/2003/pics.cgi?pics/k350-3/PDR_0096.JPG
>
>Jon
>
>-----Original Message-----
>From: owner-personal_submersibles@psubs.org
<mailto:owner-personal_submersibles%40psubs.org>
>[mailto:owner-personal_submersibles@psubs.org]On
<mailto:owner-personal_submersibles%40psubs.org%5dOn> Behalf Of Smyth,
Alec
>Sent: Monday, December 04, 2006 9:55 AM
>To: personal_submersibles@psubs.org
<mailto:personal_submersibles%40psubs.org>
>Subject: RE: [PSUBS-MAILIST] ID this picture?
>
>
>As I recall Harold has the buoy secured by shock cord. There is a shaft
>through the hull with a little rectangular bar on it, and the shock
cord
>is threaded through grooves on the ends of that bar in such a way that
>when he twists the shaft, the shock cord escapes and the buoy floats
>free. The buoy is wrapped in a poly line that unravells as the buoy
>rises. When I wanted to put a marker buoy on Snoopy, I remembered
>Harold's principle of operation but could not recall exactly what shape
>those grooves had on the ends of the bar, so I simply put a thread on
>the outboard end of the shaft to unscrew the buoy from inside.
>
>Alec
>
>-----Original Message-----
>From: owner-personal_submersibles@psubs.org
<mailto:owner-personal_submersibles%40psubs.org>
>[mailto:owner-personal_submersibles@psubs.org
<mailto:owner-personal_submersibles%40psubs.org> ] On Behalf Of Joseph
>Perkel
>Sent: Monday, December 04, 2006 9:24 AM
>To: personal_submersibles@psubs.org
<mailto:personal_submersibles%40psubs.org>
>Subject: Re: [PSUBS-MAILIST] ID this picture?
>
>
>How is this released?
>
>Looking at the picture, you see it well secured for road transport.
Just
>below the buoy itself, you see a short line going to what looks like a
>strap around the hull. Is there a release mechanism down under the
>hull?...and how is it actuated?
>
>Joe
>
>
>
>
>
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