Re: [PSUBS-MAILIST] ambient ballast control

Rick,

"you must have a relief valve in any tank"

Hmm, a bit of a detail there I could previously overlook with the open bottom.

I have to give this little problem of "free surfaces" and possible solutions with regard to my particular scheme some more thought. The jury (pun intended) is still out on this.

I went looking and found some valve sources. Your input and ideas for you own application have been most helpful and appreciated..thank you.

Joe

From: "rick miller" <rickm@pegasuscontrols.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] ambient ballast control
Date: Mon, 27 Feb 2006 11:52:01 -0800

joe

    you must have a relief valve in any tank that you build that you dont want to blow up. check that link below for a flood /relief valve that can be built scrap plate and all thread rod.

rick m

---http://www.frappr.com/?a=myfrappr&id=386116-- Original Message -----

From: Joseph Perkel

To: personal_submersibles@psubs.org

Sent: Monday, February 27, 2006 9:47 AM

Subject: RE: [PSUBS-MAILIST] ambient ballast control

Rick,

My mistake. I was not clear in communicating what is on my mind.

Here it is     http://www.frappr.com/?a=viewphoto&id=269116&pid=1450694

As for cost, this submarine building stuff for any of us is equivelant to climbing Everest. The risks and opportunity costs are nearly the same, with the return on investment being exactly equal , simply....personal satisfaction.

Nothing stupid about it.

I appreciate the effort

Joe

From: "rick miller" <rickm@pegasuscontrols.com>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: [PSUBS-MAILIST] ambient ballast control
Date: Mon, 27 Feb 2006 08:31:03 -0800

hi joe.

    i have given your design some thought which means this post will probably be really!! stupid.

    design constrants

    ambient design = the stuff will get wet/ electric is bad or expensive

    minimixe free surface area in ballast tanks = no water sloshing around in the     tanks on the surface.

    cheap = not everyone hit the lotto last night

    dependable = we don't want to die, just are friends think so.

flood valves use a flapper design with a rod throught the flapper held with a spring to act as a overpressure relief valve. mount the hinge on the rear so water flow will hold open incase of failure. control system manual psuh pull rod and bell cranks to single lever, the relief springs will help with the rigging here to rods will not have to be exact. just like the overe presuazation valve one a boeing but the spring will be on the outside not the inside with the controll rod going through the flapper.

vent valves and blow valves

    run your vents to the sail you can use pvc pipe due to low pressure and mount ball valves there.

rick m a+p/ia

************************************************************************ ************************************************************************ ************************************************************************ 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 ************************************************************************ ************************************************************************ ************************************************************************