Any Uber Battleship Gurus?

It really depends on which 16" gun you want to replicate.
Have a look thru "Naval Weapons of WWII - by John Campbell".
You will find more specification than most know what to do with.

For example, the 16" mark 2 guns on the BB South Dakota

Bore - 16"
Weight incl. BM - 128.15 tons
Length OA - 816.0"
Length bore - c795.2"
Lenght chamber - c.113.2"
Volume chamber - 30.000in³
Length rifling - 675.992"
Grooves - (96)
Twist - 1 in fot to 1 in 32 or 1 in 32
Weight projectile 2240 pounds
Propellent charge - 648lb NC
Muzzle velpcity - 2650 f/s
Working pressure - 18t/in²
Approx life - ?200 EFC
Max Range - 45,100yd/46 degrees

That's more information than even I know what to do with.

QUOTE: Originally posted by Umi_Ryuzuki It really depends on which 16" gun you want to replicate. Have a look thru "Naval Weapons of WWII - by John Campbell". You will find more specification than most know what to do with. For example, the 16" mark 2 guns on the BB South Dakota Bore - 16" Weight incl. BM - 128.15 tons Length OA - 816.0" Length bore - c795.2" Lenght chamber - c.113.2" Volume chamber - 30.000in³ Length rifling - 675.992" Grooves - (96) Twist - 1 in fot to 1 in 32 or 1 in 32 Weight projectile 2240 pounds

Yep, that sounds like it! the only thing I need the diameter of the barrel at the breach and the crown (muzzle). I want to get the right taper just right. when the Barrel is going to be 24.72" long (FYI did I mention this thing is going to be massive). When its done I don't want it looking like I glued some McyD's straws on it

hmmm though looking at the specs again, the barrel might be shorter than the barrel in the specs. But I can adlib if I can figure out the taper.

Ok, I have some digrams for these guns with some dimensions.
Now if we assume that there are any accurate proportions on this diagram at all,
then the barrel of a MK1 16" gun tapers from 4'-1" to 2'-1-7/8" and then flares slightly to about 28-7/8" at the end of the gun, over the last 28-7/8 "

Now whether that is accurate at all I can not speculate, However it is a close approximation as I can make given the diagram/drawings I have on hand.

Isn't this why nor current way to dupicate the 16" guns of the old battle ships?
We don't have the data, or we don't have the machinery?

Good luck with your project. I want to see the scale breech you create. :)

QUOTE: Originally posted by Umi_Ryuzuki Ok, I have some digrams for these guns with some dimensions. Now if we assume that there are any accurate proportions on this diagram at all, then the barrel of a MK1 16" gun tapers from 4'-1" to 2'-1-7/8" and then flares slightly to about 28-7/8" at the end of the gun, over the last 28-7/8 " Now whether that is accurate at all I can not speculate, However it is a close approximation as I can make given the diagram/drawings I have on hand. Isn't this why nor current way to dupicate the 16" guns of the old battle ships? We don't have the data, or we don't have the machinery? Good luck with your project. I want to see the scale breech you create. :)

Awesom Umi!
hehe well once I have the sketchwork and blueprints drawn up... you bet. This is gonna be a massive feat to accomplish. Just to give you the basic dimensions of this thing... 26.8in high, 49" long 11.63" wide.
I'm entertaining different thoughts on what to construct it out of. I have a background in metal working... I would love to do it in Stainless... but it would weigh a freekin ton.
The thought of doing clay and making a garage kit comes to mind.
Heavy wire frame and sheet styrean.
The Barrel I will most likely have turned out of Aluminum. Its going o have a visible bore down maybe 4 or so inches, and "micro-rifling". Just to give overall scale. a .50 cal BMG bullet is nearly the perfect same scale of the 16" round. he pefect scale round is .4848, I coulld build a diaroma around it very easily.
The Breech is actually a "Revolver" type of mechanism. Exactly how it works and what its gonna look like... you got me. I'm having to scratch build the sketches of the "Monster", as its called, from basic artwork and generic dimenstion.

Well if you are going to build an awsome model of a 16" gun, you really should at least see if you can at least find "Naval Weapons of WWII - by John Campbell" at the library.
You won't be sorry.

or
Iowa Class Battleships
by Robert F. Sumrall, Tom Walkowiak

If not that, then any of the Anatomy of the Ship books on one of the Battleships.
The Yamato, The Battleship Dreadnought,The Battlecruiser Hood,... any of these would give you a good Idea of the mechanisms and scale behind these types of guns.

For instance, This diagram of the Alabama's Turret.
http://www.fortunecity.com/greenfield/deercreek/733/alabama/B14-diagram.jpg

Or this one of an Iowa class turret

Well this piece of artilery is actualy classified as "Fantasy", but its main armament is "based" on the 16" Gun used on battleships (though I think the barrels on the "Monster" are actually a bit shorter).
Picture an Abrams Tank 22.46m tall, 9.75m wide, 22.1m Long. Mount (4) 16" Barrels on the "turret" (it can't turn, but it can lower -15 or raise to +60 degrees), then mount triple Tomahawk missle launch tubes on each side.
Once I have permission to display the images/artwork, and finish my scale sketchwork, I'll post a link.

Since the "Monster" is pure fantasy and the specs are Generic (often contradictory), then combine "hand drawn artwork" as the source... Its not easy making a design for a high "perfect" scale model. I figure where other to get "realistic" information than from people who know what they are talking about.

p.s. on second thought even Aluminum barrels would be too heavy compared to the main body (possibly tipping it over). I'm gonna have to think of something else... or weight the drivetrain down with lead wheel weights or something.

QUOTE: Originally posted by Umi_Ryuzuki Well if you are going to build an awsome model of a 16" gun, you really should at least see if you can at least find "Naval Weapons of WWII - by John Campbell" at the library. You won't be sorry. or Iowa Class Battleships by Robert F. Sumrall, Tom Walkowiak

I will have to check out these books.... its funny I have not seen the inside of a Library in almost 10 years... I know there is one by the courthouse, wonder if (I would hope so) Library cards are free.

Edit-----------------------------
I found a website that has an awesome collection of Sketchart.
http://tatooine.fortunecity.com/gargoyle/225/mac2.html
I do notice some irregularities and mis-scaling of the design, but never the less still impressive. Especially the CG rendered images.

Nother Edit ------------------------
Found this site too... this one appears to be scratchbuilt and on a mini Diaroma. The detail on this one seems really good. I'm going to see if the creator has their old sketch/design art.
http://www.apc.net/mechworks/galonduty/index2.html

Well at this point, I would consider looking around here
http://www.hlj.com/index.html
Type in "gundam" and go crazy.

Or here

http://www.finescale.com/fsm/community/forum/forum.asp?FORUM_ID=6

or better yet here

http://www.starshipmodeler.net/cgi-bin/phpBB2/viewforum.php?f=9

A very helpful group at Starship modeler.

Other resources would be
"Hobby Japan" magazines, or Gundam Mechanic, or Weapons books.
for example,
http://www.hlj.com/scripts/hljpage.cgi?HBJGW11
http://www.hlj.com/scripts/hljpage.cgi?HBJGW18
http://www.hlj.com/scripts/hljpage.cgi?HBJGW22

Thanks Umi, I had planned to move to the SCI-FI boards, just figured this would be the best place to start for the one dimension I couldn't find... the Barrel

Thanks again