|Hi Dave , Jon hasent used his sub in many years and i
think is for sale or would let go for a price. When the ice on thhe lakes
gets thick , i should test out the passive sonar. Brent the thru
hulls are not SS , no salt water around here and i still dont have a price yet.
Next were making hatch thru hull dogs . Hi Jim..., Les
----- Original Message -----
Sent: Saturday, December 20, 2008 2:58
AM
Subject: RE: [PSUBS-MAILIST] Inflatable
Pontoon Configuration Options
Les, Does Jon dive with your group as well?
Should these passive sonar/underwater communications consoles work as
well as planned, do you feel He would be interested in
one?
David Bartsch
From: lesmarki@triton.net To:
personal_submersibles@psubs.org Subject:
Re: [PSUBS-MAILIST] Inflatable Pontoon Configuration Options Date: Fri, 19
Dec 2008 23:01:32 -0500
Hi Brent, Jon's sub up north has side tanks,
heres his frapper site http://www.frappr.com/?a=myfrappr&id=1616212
. my rotating motor thru hulls are done, i seen them yesterday. i dont know
the price of them yet, in case someone might want a set. Les
K
----- Original Message -----
Sent: Saturday, December 13, 2008 4:47
AM
Subject: [PSUBS-MAILIST] Inflatable
Pontoon Configuration Options
I
left out that I'll need two venting valves next to the hull and thru hulls
for them, just above the tubing attachment points on the hull. I
can see now that it might be better to add two outlets at the
bottom of the pontoons and place the expansion valves there instead, so to
be able to blow any water out that might get into them. There are floats
available that contain two tubes inside, one in front and one in back. These
might be a better option for several reasons.
Regards, Szybowski
From: brenthartwig@hotmail.com To:
personal_submersibles@psubs.org Subject: RE: [PSUBS-MAILIST] Removing
Front MBT Date: Sat, 13 Dec 2008 01:30:34 -0800
Hey Frank, I sold my
sewing machine for a MIG welder, so I'm SOL.
;)' I have a friend
that is a real pro and making these type of floats and designs and
manufactures the very custom machines that Zodiac and others use. So I was
thinking of having him make one from scratch, but he and I decided that with
all the very nice premade units that are available, we could likely find one
that we could add two large top custom vent holes in and be done with
it. Since I'm configuring these to be blown at depth if needed in an
emergency, it's more work to calculate and design.
At the moment I'm planning
to install two 2 inch ID basic vents that I can attach a short
flexible hose to, then that hose attaches to one of the 2 inch schedule
40 aluminum tube supports for the tangle guard and pontoon standing
platform. This way I don't need a extra hose on the outside of the sub,
since that said support tube can serve double duty. Then as the
tube goes toward the sub, there is a downward facing T added to the tubing
with a large volume low pressure pop off valve facing downward attached to
the bottom of the T. This expansion valve will be set at the proper level
needed to keep the pontoons inflated at the surface.
Since there is one expansion
valve on each of the two tubes that come towards the sub, they should keep
me from popping the pontoons during surface ops. Then for blowing the
pontoons at depth I feel I need to add another set of T's right next to
the sub that go down well below the bottom of the pontoons and that
tube will be curved to the shape of the hull, and at the bottom of that tube
will be a large valve that is attached to a thru hull at that point. This is
so I can operate it from inside, just like a MBT vent valve in the conning
tower. I obtained that basic idea from the two tubes that come out of
the bottom of the large plastic pipes with caps, that were used on the
Dennoch sub. http://www.psubs.org/museum/museum_sfphotos.html For
filling the pontoons with air from the SCUBA tanks, I'll have a thru hull
going right thru were one the the tangle guard support tubes attaches to the
side of the sub. This is a little more work, but will give me a cleaner look
when finished. That is the concept I have worked up to this point. I'm
sure it will need some fine tuning, once I have made a full assembly model
of it, I'll have you guys take a look at it, as well as my local
expert.
Regards, Szybowski
From: ShellyDalg@aol.com Date: Thu, 11 Dec 2008 16:48:46
-0500 Subject: Re: [PSUBS-MAILIST] Removing Front MBT To:
personal_submersibles@psubs.org
Hi Brent. Seems like you could make your own pontoons fairly easy and
cheap. As long as they weren't necessary to ascend. You can buy rubber
sheeting and also tubes off the shelf in pretty much any thickness you
want. Making a big inner tube type pontoon should be pretty simple, and the
same guys who sell the tubes/sheets have several types of glue that bond
stronger than the material itself. That may be a good way to save some
money, and give you more flexibility on the shape.
You could also make a nylon bag for it to protect it from abrasion and
sunlight. Just sew it together on a regular sewing machine. Frank
D.
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