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James
Acrylic saddle tanks could be a way .One could
purchase acrylic tubing this way one could monitor the contents
,have more stability and better view ,even if its slightly
distorted.
Glen
----- Original Message -----
Sent: Tuesday, March 15, 2011 12:44
AM
Subject: Re: [PSUBS-MAILIST] Main Tanks
Question
James,
A clear forward MBT sounds real
interesting. Most of the time you'll be looking down but to have a
totally unobstructed forward view would be nice. You should be able to
vacuum form something from sheet material. It would take a big oven and
a pretty elaborate pattern to form into. It would probably just about
disappear in the water. Look into Lexan also. I've formed it
in small molds before and it works well. It's tougher and shouldn't be
as prone to cracking.
Forming big parts from plexi or Lexan probably
isn't easy but neither is making molds and laying up all that
fiberglass. Maybe Greg Cottrell can advise you.
Dan H.
----- Original Message -----
Sent: Monday, March 14, 2011 7:35
AM
Subject: Re: [PSUBS-MAILIST] Main Tanks
Question
Hi Dan\all,
I dont actually know what im going to do with the main tanks yet, so i
think i'll make them first and then fabricate the mounting arrangement
afterwards.
>I discussed my MBT alterations with Kittredge before I built
them. He cautioned me to be careful enclosing to much of the bottom so
I wouldn't find myself in a situation where the sub was nose or tail >up
like a buoy, with no way to vent the air from the upper MBT and no way to
hold air in the lower MBT.
Yes, i'd heard of that somewhere before, maybe from you. Makes
sense. I'll do the same as you with the vent holes.
What about this for an idea?
As you probably know, ive modified the front viewport to be a large
dome. I've been thinking of how i can make the main tanks as near to
the originals as possible but without losing visibility through my
port. How about getting the orward main tank fabricated completely
from say about 1/2 inch clear acrylic and having a completely clear front
main tank. Protect the tank with some crash bars.
Otherwise glass fibre tanks with maybe some acrylic ports on similar to
Doug Privit's sub Delta.
Any thoughts on that anyone? Completely clear main tank made out of
acrylic. Sounds expensive.....
James
About 4400 pounds.
----- Original Message -----
Sent: Friday, March 11, 2011 11:07
PM
Subject: Re: [PSUBS-MAILIST] Main
Tanks Question
Off the subject, but how much do those K boats wiegh on land?
Brian
On Fri, Mar 11, 2011 at 9:22 AM, Land N Sea <landnsea1@hawaiiantel.net> wrote:
Hi James,
I am building a K-350 and have always admired
Dan H. beautiful job he did on his MBT,s. I was planning on glassing
in the bottoms of mine as well with a 6" opening in the centers
or one in the front and one in the rear of each one to prevent the
"burping action" when towed by a boat.
I see what you were saying about where the
MBT,s interface with the pressure hull as well as the problem with the
strap that holds them in place.
I have done some glass work in the past but
wasn't looking forward to this step in the future as I don't think I
have the talent to make the finish look as nice as Dan's but what the
heck.
I would love to see any/all pictures of your
MBT,s and any advice on how you formed them, got a fair front
curve on them etcetera.
Thanks
Rick Patton
Sent: Friday, March 11, 2011 5:51 AM
Subject: RE: [PSUBS-MAILIST] Main Tanks
Question
James,
I
have the standard tanks, but based on using them this is one area
where I would suggest you consider a significant departure from the
plans, and not just to make them look better. Specifically, I would
close the bottoms and provide downward stovepipes. But you will find
that hard to do with the standard method of attaching the tanks with a
strap around the hull (I actually glassed in the bottoms in an
attempt, but ended up undoing it). I would suggest giving the tanks
three sides and a bottom, as opposed to using the pressure hull as one
of the sides, and bolting them from underneath over supports that will
need to be a little different than the standard ones. Just
something to think about.
Thanks,
Alec
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Hi All.
Im finally at the stage where i am starting on my main
tanks. Ive decided just to stick with the ordinary ones shown on
the plans, but i'd like to jazz them up a bit like Dan H has done as i
think they look a lot better.
Question is: For those of you who have "modified" K350 main
tanks, did you make the framework as per the plans and adjust the
tanks to fit, or make the tanks first, and modify the framework to fit
the new shape. I suspect the latter. I was hoping to be
able to get the metalwork complete and then get the sub painted.
If i have to make the tanks first, it will mean more time
unpainted. Anyway, any thoughts suggestions always
welcome.
Many thanks
James
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