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Hi Chuck.
Hmmm. Interesting. Never heard of that. But then
again, I've never used a depth gauge out of water. Well, I suspose you could
just use a regular analog non computer depth gauge.
That should work fine I would think. You can
get a cheap analog type depth gauge on e bay. In the air it should basically
work just like a barometric pressure gauge and give you the
same reading it would at the same pressure in
water. At least I would think so.
Bill.
----- Original Message -----
Sent: Friday, October 28, 2005 7:13
PM
Subject: RE: [PSUBS-MAILIST] Another
nutcase here.
Even
when computers are tested during repairs or calibration they are submerged in
water in a small pressure tank. My old instructor trainer repairs dive
equipment and he said exposure to increased pressure out of water can damage
some computers. Don't know why, pressure is pressure if you ask me. But do you
want to risk it on a $400 dive computer?
Chip
Hi Chuck.
That sounds like a good idea too. But the
easiest thing of all would be to use a non water activating dive computer
that would just read
the air pressure as if it was water
pressure.
Bill.
----- Original Message -----
Sent: Friday, October 28, 2005 6:00
PM
Subject: RE: [PSUBS-MAILIST] Another
nutcase here.
A little cleaner setup might be to use an acrylic box that is
sealed but vented to the outside by a couple of tubes. One to bring in the
outside water pressure and one to vent the air out of the box. That way no
water is sloshed aroud in the bucket.
Chip
Right on Paul.
You could put your dive computers into a
small bucket of water inside the dry sub and then the pressure in the
sub
pushing against the water in the bucket
should register the interior pressure and make your dive computers depth
gauge work.
Bill.
----- Original Message -----
Sent: Friday, October 28, 2005
12:41 PM
Subject: Re: [PSUBS-MAILIST]
Another nutcase here.
So treat an ambient dry sub like a dive with a big
scooter. I haven't thought much about ambient subs but this has
prompted some rules I might set for myself:
* Be a certified
diver. The education on dive physiology and just general comfort
underwater is crucial.
* Assume you'll be exiting in an
emergency. I'd think entanglement is one of the more likely
accidents, particularly for those of us interested in shipwrecks.
:-) In cold water wear some kind of exposure suit - I can't see
myself wearing my drysuit but at least a thicker wetsuit would
help. Weight belt, mask, survival gear, personal bail out
bottle, maybe a 40cf pony? That could be a lot of gear...
but still less than you'd wear on any normal cold water dive.
Store an ascent line/spool in an exterior compartment. Think
what you'll do on the surface, minus your diesel/electric boat.
:-(
* Have partial droppable ballast - as Rick describes.
And it sounds dangerous to have fully droppable ballast.
Right?
* Carry your dive computers and dive a plan. I've
done recreational diving with tables and with just one computer but
would probably spring for a backup computer of a different model than
my primary computer. Yes, in a dry ambient you'd have to trick
them into thinking they were submerged.
It seems like this
being out of the water, even in a small sub may keep you warmer, and
make it easier to manage gear, particularly breakdowns. You can
easily talk to your dive partner because he's sitting right there
behind you. I like it. I have some of the slowest ears
ever for diving and have the hope that equalizing in air may be easier
for me than in water. Also need to try the ProEar2000 mask or
some kind of helmet, which would be much easier than building a sub to
test this idea. :-)
Great discussions on this list!
Paul
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