Re: [PSUBS-MAILIST] Choosing sub design (Was: Carsten in Wired Magazine)

Shipmates,

With all due respects, I am thinking "no". To me, there is a very strong "safety argument" to be made for rolling your own. I know of no "safety argument" to be made in defense of using a propane tank. For me, I adm it my bias, the selection of a propane tank is in every case, and without exception, evidence that the designer lacks the knowledge base to build a safe submarine. To me it is all very back and white on this one issue.

Can someone out there provide the "safety argument" for propane? My mind is open, I have simply never, ever heard the argument. Is there one? Please bring it forth. Again, my mind is open.

Doug Farrow

SeaLordOne

-----Original Message-----
From: Joseph Perkel <joeperkel@hotmail.com>
To: personal_submersibles@psubs.org
Sent: Mon, 26 Dec 2005 17:31:31 +0000
Subject: RE: [PSUBS-MAILIST] Choosing sub design (Was: Carsten in Wired Magazine)

I think what Stan just said should be added to the PSUBS ethos for new arrivals to this game.

Eloquent simplicity, good job!

Joe P

From: sfreihof@aol.com
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Choosing sub design (Was: Carsten in Wired Magazine)
Date: Mon, 26 Dec 2005 10:14:09 -0500

Welcome Kris;

First, decide what design you want to use. You can choose from a 1 atm sub, to an ambient sub wet or dry. It depends on your needs, capabilities, and skills.

If you choose the 1 atm design, most on this list would suggest you "roll your own" hull, but propane tank based designs have been done successfully if you are aware of the drawbacks. The consensus is that it isn't worth the saving s because it won't save you much and entails too many uncertainties.

Ambient subs are easier to build but have some operational limitations and risks. You need to be a qualified and competent scuba diver first to understand the drawbacks of ambient subs.

Again, it all depends on your needs, capabilities and skills. Everything is a trade-off.

Stan

-----Original Message-----
From: Kris <kc0opd@gmail.com>
To: personal_submersibles@psubs.org
Sent: Sun, 25 Dec 2005 15:00:20 -0600
Subject: Re: [PSUBS-MAILIST] Carsten in Wired Magazine

Hello! I'm new to the area of personal subs, and I'm looking for some information. I found the PSUBS web site, which gave us a great start into our sub design. My father and I are attempting to build a sub for use in a freshwater lake, with a maximum depth of no more than 50 feet. At the present time, our biggest problem is finding a suitable tank for the hull. We have considered a used LP tank, but there is the concern about residual LP. What has everyone else done, or what can you recommend? Thanks in advance for your help. Kris

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