Re: [PSUBS-MAILIST] shapeable incompressable filler..any ideas?

[Rob Innes <innespace@jett.net>]

Right on! The sky isn't falling yet, Chicken Little!  Also, I just
completed a deck repair on a sail boat that had a Balsa wood core and
that stuff turns to oatmeal when it gets wet. I apologize for all the
food analogys

Rob

Erik Michael Muller wrote:

> Ok Dewey,
> Firstly, tone down your attitude, no-one likes to be condescended.
>
> secondly, As this material has not yet been made, no-one is going to
> die at this stage...the whole point of this list is to sound out ideas
> etc.
>
> thirdly, even if a volume filler was to structurally fail the volume
> is still conserved, and is still effective at displacing volume
> (provided it has no air bubbles etc. inside it) . To see what I mean,
> get a rock and measure its volume.  Then smash it up and measure the
> volume of all the fragements and add them up.  You will find that the
> sum total of all the little fragment volumes are the same as the
> whole, un-smashed rock. So even as the rock has suffered structural
> failure, it still displaces exactly the same amount of air as when it
> was whole. The cabin will not suffer a sudden decompression if the
> filler cracks. I hope I have illustrated this clearly.
>
> Finally, I would suggest to you that rubber is just about as
> incompressable as balsa soaked in oil.  The benifits of rubber is that
> a)non-toxic, b)less of an environmental issue if there is a problem,
> c)rubber is not a liquid and does not need to be sealed, d) it is
> easier to machine and shape (since I dont have to consruct a specail
> vessel to hold the rubber in)
>
> So, in answer to your statement. No-one is going to die. I am not
> stupid enough to dive in a sub that I am not completely happy with,
> and that people on this list are happy with.
>
> It might be more considerate to continue this discussion off-list if
> you feel the need to.
> E.
>
> -------------------
> > Of course you realize,,,,someone is going to die, yes?
> > Think simple,like maybe balsa soaked with oil or
> > water. Totally incompressible, reasonably formable,
> > cheap, safe, non-toxic, and you MAY live with it in
> > with you. As to a volume filler not being structural
> > in an ambi-sub, consider this. If the filler crushes
> > at depth X, and does so rapidly beyond that depth,
> > then the result could well be a major reduction of
> > occupied volume, and increased inner volume, leading
> > to a perhaps rapid drop in interior pressure, and
> > either water coming in REALLY fast in a wet sub and
> > said sub sinks like a rock, or that pressure being
> > suddenly applied to your unreinforced hull, which
> > would also fail, and.....well anyway, it COULD be a
> > bad thing. You have to decide for yourself. Just a
> > thought.
> >
> > Dewey
> > --- DBACKIDS@aol.com wrote:
> > > you could also try superballs in bondo/resin...
> > >
> >
> >
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