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Re: [PSUBS-MAILIST] (No Subject)
Hi Saul!
I'm building a dry ambient sub too. I'm 70% done.
To keep pressure inside the sub you can use a modified scuba regulator. I
don't know how to modify it because I don't use that but I know that this is
the most popular way to do it.
So, what am I using? I only have a hole at the bottom of the sub with a ball
valve and a piece of clear tubing that goes to the top and down to the
bottom of the sub. The end of the hose is open. I also have another ball
valve that provide compressed air from a cylinder into the hull. So the
principle is very simple. If there is not enough air comming in the sub to
equalize the pressure, water will want to go into the sub by the clear hose.
I will see it gooing up and I will open the compressed air valve to augment
pressure inside the hull. If there is to much compressed air comming in the
hull, I don't care because the excess will go out by the hose. The end of
the hose is at the bottom of the sub to expulse water that might comme into
the sub and to expulse co2 which is heavyer that o2.
That's it!
If you have other questions, don't hesitate to ask. It's the purpose of this
mailing list! And, welcome aboard!
Pierre Poulin
>From: "Saul H" <saul69@lycos.com>
>Reply-To: personal_submersibles@psubs.org
>To: personal_submersibles@psubs.org
>Subject: [PSUBS-MAILIST] (No Subject)
>Date: Mon, 24 Mar 2003 10:48:11 -0500
>
> Hello,Greetings,Salutations
>
> My name is Saul Hernandez I am researching ambient pressure
>submersibles for the possibility of designing and then building. It would
>be a 2-3 person sub max depth 100 ft. I'm a certified padi diver I'm
>begginng mixed gas traing this summer. The sub would be made of fiberglass
>withe steel reinforcements. I have extensive experience with both. I have
>many questions but for now the one chewing my brain is the build up of
>pressure inside the sub. What would i need to do to equalize the pressure
>inside the sub as i release breathing air into the sub. (I didn't mention
>that it will be a dry ambient pressure sub with a diver lock out that will
>also act as the main entrance and exit an emergency exit would be located
>in the roof of the sub. With this info in mind keep into consideration that
>I'm in the design phase and that this is the 3rd wk that I have been
>considering this so nothing is set in in stone). any questions or critisism
>will be greatly appreciated.
>
>
>
>"As you are I was . As I am you will be".
> Gaestalt prayer
>
>
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