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Re: [PSUBS-MAILIST] Caught in weeds...
Wow! I think that is an excellent idea.
--- Ian Roxborough <irox@ix.netcom.com> wrote:
>
> Hi Pierre,
>
> I was thinking that a hopper full of steel
> ballbearings with an
> electro-magnet at the mouth. That way you could
> control the
> weight release speed by turning off and on the
> electro-magnet.
> In event of a powerfailure, the electro magnet
> keeping the
> ballbearings in the hopper will shut off letting the
> ballbearing
> out at a rate determined by the size of the hopper
> mouth. So
> without power the sub would return to the surface at
> a safe speed.
>
> Ian.
>
> On Sat, 30 Jul 2005 12:05:32 -0400
> Marie-Andrée et Pierre <poulin.carrier@videotron.ca>
> wrote:
>
> > Nope...
> >
> > I was not sure about the safety of the drop weight
> since Big is an ambient
> > sub. The battery pod is filled with lead. it
> weight about 600 pounds. I made
> > the pod so it can be dropped. I only need to
> install the control inside the
> > sub if I ever change my mind.
> >
> > I am not sure it is a good idea to drop 600 pounds
> out of a total of 1300 at
> > let's say 60 feet and go rocket to the surface.
> For one, the hull may not
> > survive the pressure. I may not survive the change
> in decompression. If the
> > hull craked, the sub will be more heavy with water
> and go down again if I
> > don't exit fast enough.
> >
> > So what I did is make an escape from the sub easy.
> I have a pony tank with
> > me inside the sub that can easyly be carried on my
> controled way to the
> > surface.
> >
> > Anybody have any though about that?
> >
> > Pierre
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "SeaDiver" <seadiver@gmail.com>
> > To: <personal_submersibles@psubs.org>
> > Sent: Saturday, July 30, 2005 11:41 AM
> > Subject: Re: [PSUBS-MAILIST] Caught in weeds...
> >
> >
> > > Pierre does big have a drop weight?
> > >
> > > Curtis,
> > >
> > >
> > >
> > >
> > >
>
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