----- Original Message -----
Sent: Sunday, July 13, 2008 2:34
PM
Subject: RE: [PSUBS-MAILIST] Unknown
Connection Bars on my K-250
Thank you
Dan,
I'm not home at the
moment so I can't tinker with those plates, but I suspect your right in
thinking they are aluminum. I would suspect Dr. LeShack installed them after
he purchased the sub. The second and third owners didn't really do any thing
with the sub, but look at it and scratch there heads thinking of what to do
with it.
My sub is designated
#105 on the bill of sale from Dr. LeShack to Terry Anderson, who was the
second owner. I don't have the original bill of sale, or letter of intent
from the Captain. I would like to get those, or a copy of them from the
Captain and/or from Dr. LeShack, who I plan to look up some time when I can
catch a breath.
What does
your paper work say for #105?
Regards,
Brent
From: Jumachine@comcast.net
To:
personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Unknown
Connection Bars on my K-250
Date: Sun, 13 Jul 2008 10:18:48 -0400
Brent,
By weight, a magnet, a grinder and your eyes you can
pretty much determine what most metals are.
If it's heavy and fully magnetic, it's
steel.
If it's light weight, it's aluminum.
If it's heavy and slightly magnetic or non magnetic,
produces dull red sparks with a grinder and looks like steel where you
ground, it's most likely stainless steel.
If it's heavy, non magnetic and the grinder doesn't
make sparks or makes very few sparks, you can examine the ground area and
determine if it's zinc, copper or bronze by the color.
If it's real heavy, soft and doesn't make sparks it's
most likely lead, or something combined with lead if it's not real
soft.
The above will always get you in the ball
park. Grinder sparks tell a lot about a metal. Of course it's a
crude method because there are all combinations of metals. But it's a
start.
If it doesn't show rust and is pitted from corrosion
but was used as a functional part, my bet is on aluminum. Throw it
away! It shouldn't have been bolted to steel anyway.
Yes, the holes in my pod mountings are so I could
get a line or chain in them and pull from there. To tell you the
truth, I don't think I ever used them but the holes were cheep to make
before the sub was painted, so I made them.
Unfortunately what I received from the Captain was
very brief. I was hoping he had a good easy to copy list of the subs
he built and maybe some information to go with each but not really. I
have a list of sub numbers and who some of them were made
for. He may have more information but I didn't get it.
Do you know what number you sub is? The
list is numbered between 105 and 131. It has the names of
the original purchaser for most and the dates for a few. I'm sending
what I received along with the list I compiled to Jon. He's the
keeper of the site and should have this also.
Dan H.
----- Original Message -----
Sent: Sunday, July 13, 2008 1:59
AM
Subject: RE: [PSUBS-MAILIST] Unknown
Connection Bars on my K-250
Greetings
Dan,
Is there any
interesting data in the materials you received from the
Captain?
Those bars we are
talking about are far more corroded then any of the surrounding metal. So
I don't think it's steel. Perhaps if it's not zinc, it us aluminum. There
is no rust coming from the chipped off paint on them. Ya I don't like
overlapping metals like that on the exterior.
Speaking of overlapping
metal. I saw a overlapping saddle collar like I have around my conning
tower on a new large storage tank that has a large access tube in the top
like are Kittredge
subs.
Dan are the large
holes drilled in the pod plates near the front of Persistence for pulling
it down low if need be? I like your idea of using solid round bar
stock rings. I think I can install a modified version of that, of which
will be hidden in behind the inside of the leading edges of the keel
skids. For this I would use round bar stock of the same diameter as the
existing support between the front of the keels. Then weld in a quarter of
a circle piece of those bars, with one end welded to the back of the
existing bar support out about 2 inches and then weld the other end
to the inside vertical surface of the 1/4" vertical plate of the
skids. This would keep the rope or chain attached to the front
keel support bar, from moving or bending said support
bar.
I do a lot of
sandblasting for my furniture business and fine detail blasting for
restoring old guns and
machinery.
http://www.frappr.com/?a=viewphoto&id=4001713&pid=10167592
I've
learned that if you put two or more smaller compressors together, you can
get enough CFM to do more commercial work if you don't have a larger
compressor. I plan to do all the blasting my self using copper slag
blasting media. It cuts twice as fast as silica, and is healthier for you
to be around. Once I've removed every thing off the sub, I need to blast
every part of the pressure hull inside and out. This way I can do a
much better inspection for any pitting and/or visible cracks if there are
any. Then I will spray on a cheap temporary high zinc primer to keep the
rust down while I replace a few thru hulls and add a few weldments. Then
I'll reblast every thing and apply a proper epoxy
primer.
"That
man is the richest whose pleasures are the cheapest." ~
Henry David Thoreau
Regards,
Brent
Hartwig
From: Jumachine@comcast.net
To:
personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Unknown
Connection Bars on my K-250
Date: Sat, 12 Jul 2008 22:32:02
-0400
Brent,
If your reconditioning the sub anyway just remove
them and toss them. Flat pieces bolted together like that are a
place to get rust forming that you can't get at. Best if you toss
those tabs and replace them with something made out of round stock welded
in place. Maybe two U shaped rings.
Are you considering sand blasting the entire
sub. If your going to strip it down and rebuild it, you may want to
consider sand blasting. It's the easiest way to work with something
like that. No paint to grind off, the rust is all gone and you can
see what your working with. You need someone that has an industrial
size blaster and a large compressor. Probably an half day job. It's
not cheep but worth it in the long run.
Enjoy and good luck with it.
Dan H.
----- Original Message -----
Sent: Saturday, July 12, 2008 7:13
PM
Subject: [PSUBS-MAILIST] Unknown
Connection Bars on my K-250
Hello
SMMO's, I have been
pondering what these flat connection bars are, that are bolted to the
top front area of my double keel skids. I suppose you could winch the
sub forward with them, but they feel, look, and sound like brittle zinc
anodes. They were attached somewhat haphazardly.
If anyone knows or would care to venture a guess, I'd
like to figure it
out? I have
not come across them in the K-250 plans. I was just going to
remove them and attach a zinc anode just below them on the inside of the
vertical plate of the
skids. Also notice that
the port keel is skip welded at the base and the starboard side is solid
welded.
http://www.frappr.com/?a=viewphoto&id=2384531&pid=10166020
Regards,
Brent