[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PSUBS-MAILIST] Deep Water Testing of Persistence
Brian / Shawn
I had a plan if I needed it. It's a fine line between preparing for what
could go wrong and over preparing for anything that could go wrong. If I
was stuck with the sub at the bottom, Al had a lift bag and was prepared to
dive to a hundred feet of so attach the bag and get it off the bottom. With
the sub up that far, we could travel to where it touched bottom again and do
another hundred foot lift until we got it on the surface. That would have
been about midnight, but it was a plan. That would have worked if it was
only a little heavy.
If it was too heavy for the lift bag and the poly line, my next plan was to
mark the spot with a float on the line, hire a barge with a winch, then
devise and build a grapple that would slide down the poly line to grab the
lifting eye. The sub flooded would be around 4000 thousand pounds. I'm
sure I'd be buying a lot of cable for someone because I doubt anyone would
have that much available on a winch around here.
I like your idea of a lift bag with a timer.
I guess you could substitute the weight release line with a wire and have
something electrical to drop the weight. Entanglement wouldn't matter but
every system has it's possible problems.
I'm not so sure a pressure gauge would be sensitive enough to let you know
if it's flooding. It would take many pounds of water to increase the
pressure much. By the time you know you had a problem, the sub would
already be to heavy.
I was trying to think positive but be prepared without going through
thousands of dollars of insurance that wasn't needed. Sort of, do you go
for the $100, 000 policy or the $1,000,000 policy. The important thing is
that you have an back up plan, not necessarily implement it before you need
it though.
Dan H.
----- Original Message -----
From: "Shawn" <gambit7@bellsouth.net>
To: <personal_submersibles@psubs.org>
Sent: Thursday, September 15, 2005 4:25 PM
Subject: Re: [PSUBS-MAILIST] Deep Water Testing of Persistence
A remote camera system mounted inside the sub on a tether to the surface
would seem better. As well as an internal pressure guage. Any leak should
register as a rise in pressure correct? Alongside all that, a remote
emergency ballast tank (airbag) would be good. I'll be honest, if it was
my project I'd have all of this. If not, I'd have surface support strong
enough to winch it off.. Just my thoughts. Quite BALLSY to do it any
other way, dont think my heart coulda took it either hehe.
Shawn
----- Original Message -----
From: "Brian Cox" <ojaivalleybeefarm@dslextreme.com>
To: <personal_submersibles@psubs.org>
Sent: Thursday, September 15, 2005 3:13 PM
Subject: Re: [PSUBS-MAILIST] Deep Water Testing of Persistence
Dan,
I think that experience would have given me a coronary!! Has
anyone thought of maybe having some type of air bag on a timer in case of
a leak when testing ?
Brian
----- Original Message -----
From: "Ray Keefer" <psubs2001@yahoo.com>
To: <personal_submersibles@psubs.org>
Sent: Thursday, September 15, 2005 11:41 AM
Subject: [PSUBS-MAILIST] Deep Water Testing of Persistence
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 311
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************