Re: [bolger] Water ballast tanks
On Fri, 30 Jan 2004 11:31:29 -0500, "Roger Derby" <derbyrm@...>
wrote:
http://www.plastimousa.com/water_tanks.htm
West Marine sells them, among other places...
Later,
Jon
--------------------------------------------------------------
Jon HylandsJon@...http://www.huv.com/jon
Project: Micro Seeker (Micro Autonomous Underwater Vehicle)
http://www.huv.com
wrote:
> If cost were of no concern, you could contact the people who make fuel tankOr, you could just buy a marine flexible water tank, like this:
> liners for aircraft. Of course these are serious maintenance headaches, but
> they are in use in thousands of planes. Most are stuffed into place thru
> rather small access ports which implies a certain flexibility.
http://www.plastimousa.com/water_tanks.htm
West Marine sells them, among other places...
Later,
Jon
--------------------------------------------------------------
Jon HylandsJon@...http://www.huv.com/jon
Project: Micro Seeker (Micro Autonomous Underwater Vehicle)
http://www.huv.com
If cost were of no concern, you could contact the people who make fuel tank
liners for aircraft. Of course these are serious maintenance headaches, but
they are in use in thousands of planes. Most are stuffed into place thru
rather small access ports which implies a certain flexibility.
I don't know if the material meets FDA standards for potable water systems,
but if you mix in enough whisky it should be safe.
Roger
derbyrm at starband.net
http://derbyrm.mystarband.net
liners for aircraft. Of course these are serious maintenance headaches, but
they are in use in thousands of planes. Most are stuffed into place thru
rather small access ports which implies a certain flexibility.
I don't know if the material meets FDA standards for potable water systems,
but if you mix in enough whisky it should be safe.
Roger
derbyrm at starband.net
http://derbyrm.mystarband.net
----- Original Message -----
From: "Don Johnson" <dej.fci@...>
> Getting away from the arguments about when water ballast is effective,
I'd like to
> post an idea about tank construction.
>
> I own a Bissell carpet cleaning machine which uses a single tank for clean
water and
> dirty water. The clean water fills a collapsable bag within the tank. As
you use up
> the clean water, the bag collapses making room for the dirty water picked
up by the
> vac.
>
> It seems like this would be a great way to construct a ballast tank. The
tank would
> consist of an outer shell and an inner liner. You could fill the tank
(inner liner) with
> potable water and as you use it for drinking, cooking, washing, etc, you
let sea water
> into the tank (outer shell) to replace it. The sea water and the fresh
water are kept
> separate by the liner bag.
>
> This poses a couple of issues for tank construction. First, where would
you get an
> appropriate liner bag? It has to be strong, durable, and sanitary. Is
there an
> appropriate commercial product. If not, how would you make one? Second,
how
> would you do the plumbing to the inner bag?
>
>
> -Don
>
>
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Getting away from the arguments about when water ballast is effective, I'd like to
post an idea about tank construction.
I own a Bissell carpet cleaning machine which uses a single tank for clean water and
dirty water. The clean water fills a collapsable bag within the tank. As you use up
the clean water, the bag collapses making room for the dirty water picked up by the
vac.
It seems like this would be a great way to construct a ballast tank. The tank would
consist of an outer shell and an inner liner. You could fill the tank (inner liner) with
potable water and as you use it for drinking, cooking, washing, etc, you let sea water
into the tank (outer shell) to replace it. The sea water and the fresh water are kept
separate by the liner bag.
This poses a couple of issues for tank construction. First, where would you get an
appropriate liner bag? It has to be strong, durable, and sanitary. Is there an
appropriate commercial product. If not, how would you make one? Second, how
would you do the plumbing to the inner bag?
-Don
post an idea about tank construction.
I own a Bissell carpet cleaning machine which uses a single tank for clean water and
dirty water. The clean water fills a collapsable bag within the tank. As you use up
the clean water, the bag collapses making room for the dirty water picked up by the
vac.
It seems like this would be a great way to construct a ballast tank. The tank would
consist of an outer shell and an inner liner. You could fill the tank (inner liner) with
potable water and as you use it for drinking, cooking, washing, etc, you let sea water
into the tank (outer shell) to replace it. The sea water and the fresh water are kept
separate by the liner bag.
This poses a couple of issues for tank construction. First, where would you get an
appropriate liner bag? It has to be strong, durable, and sanitary. Is there an
appropriate commercial product. If not, how would you make one? Second, how
would you do the plumbing to the inner bag?
-Don