RE: [PSUBS-MAILIST] Main ballast.

["Pierre Poulin" <pipo305@hotmail.com>]

In fact, I think I say something like that in a R/C sub. Somebody send us a 
link...

Pierre




>From: "Alec Smyth" <Asmyth@changepoint.com>
>Reply-To: personal_submersibles@psubs.org
>To: <personal_submersibles@psubs.org>
>Subject: RE: [PSUBS-MAILIST] Main ballast.
>Date: Thu, 22 May 2003 15:47:35 -0400
>
>I recall seeing that same exact concept on some ancient sub drawing, by
>somebody like Da Vinci. In theory I don't see why it would not work,
>especially as in an ambient design it would be far easier to turn the
>screw.
>
>Alec
>
>-----Original Message-----
>From: Pierre Poulin [mailto:pipo305@hotmail.com]
>Sent: Thursday, May 22, 2003 3:23 PM
>To: personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] Main ballast.
>
>Since my sub is a dry ambient,
>
>Could I use some sort of cylinder with a piston that can be moved inside
>
>with a screw. On one side of the piston, ambient water, on the other
>side,
>ambient air from inside sub.
>
>You just turn the screw one way to get water in. turn the other way to
>push
>water out.
>
>What about that?
>
>Pierre Poulin
>
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