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Re: [PSUBS-MAILIST] depth indicator
Hi Doug, I'm also building an ambient sub, re: dome mounting, I have a
1/4" acrylic
dome 22" dia. with a 2" flange. I'm going to bolt the flange from the
inside. How many bolts should I use and how far apart should they be?
I'll wait to hear from you
before I start drilling holes. Also, can I use individual washers for
each bolt or
should I get a support ring, and if so, how makes them?
Thanks, Carlos
n 8/29/08, djackson99@aol.com <djackson99@aol.com> wrote:
> Hmmmm... Not the weight of the sub. It should indicate the depth of the vent
> where the air is released into the surrounding water and likely a little
> deeper since the constant flow of air may add a few psi to the ambient
> cabin. Air at the top of the cabin is at the same pressure as the air at
> the bottom of the cabin where it is vented to the surrounding water. So it
> does not matter where the gauge is inside the cabin.
>
> That also makes the air at the top of the cabin at a pressure higher than
> the water surrounding the top of the cabin. So a hatch in the top of an
> ambient sub seals naturally if it opens inward. Completely opposite to a
> 1ATM sub.
>
> In my case the dive computer is going to ride along outside the forward view
> port. There is no room for it inside and with it outside it will
> automatically start logging the dive when it submerges.
>
> So what are you thinking of building?
>
> Doug J
> www.submarineboat.com
>
>
> -----Original Message-----
> From: David Bartsch <dbartsch2236@hotmail.com>
> To: personal_submersibles@psubs.org
> Sent: Thu, 28 Aug 2008 11:11 pm
> Subject: [PSUBS-MAILIST] depth indicator
>
> In an ambient submarine, if one uses a dive watch type depth indicators
> to give an indication of how deep He is, does this display the actual depth
> or will it be off a little having the additional weight of the sub working
> on it? One of those HMMMM thoughts...
>
>
> David Bartsch
>
> ________________________________
> Be the filmmaker you always wanted to beearn how to burn a DVD with Windows.
> Make your smash hit=
>
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