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  • Monster Machines

    I was reading a book about railway artillery and I was totally taken aback by their capabilities - a 7 ton shell with a range of 30 miles and the sizes of the guns. The largest railway gun in the book was a WWII German gun with a barrel which had a bore of 800mm (31.5") and a length of 32.48 meters (106.5 feet). It was made by the Krupp Company. In order to make such a barrel, it must have been some tremendously large lathe used to turn and rifle the barrel. Also, trying to hold tight tolerances on a piece so large must have been a nightmare. Also, this gun was built about 70 years ago, long before any CNC stuff!

    Does anyone have a pictures or links to sites which might show the large machine tools used to make these large artillery pieces? Thanks.
    Bill

    Being ROAD KILL on the Information Super Highway and Electronically Challenged really SUCKS!!

    Every problem can be solved through the proper application of explosives, duct tape, teflon, WD-40, or any combo of the aforementioned items.

  • #2
    leblond made the deep hole borers that the US used to make their 16" naval cannons...

    They are fairly big.. But big is easy to build, small is much harder then big...
    Precision takes time.

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    • #3
      Check out this link for the story:
      Story of the GUSTAV

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      • #4
        Originally posted by BigBoy1
        I was reading a book about railway artillery and I was totally taken aback by their capabilities - a 7 ton shell with a range of 30 miles and the sizes of the guns. The largest railway gun in the book was a WWII German gun with a barrel which had a bore of 800mm (31.5") and a length of 32.48 meters (106.5 feet). It was made by the Krupp Company. In order to make such a barrel, it must have been some tremendously large lathe used to turn and rifle the barrel. Also, trying to hold tight tolerances on a piece so large must have been a nightmare. Also, this gun was built about 70 years ago, long before any CNC stuff!

        Does anyone have a pictures or links to sites which might show the large machine tools used to make these large artillery pieces? Thanks.


        das Paris Kanon.


        Built solely to besiege Paris in WW1.
        metalurgy at the time was such that every time the gun was fired the bore streatched. The shells were numbered so that a slightly larger shell was loaded each time. After a number of shells the barrel was lowered and a new barrel was installed and the process began again.
        it required a couple of hundred soldiers to attend it and it was wildly inaccurate.
        Not one of herr Krupps better ideas.

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        • #5
          Not a machine tool, but a big machine made by krupp. http://www.practicalmachinist.com/vb...-mover-111324/

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          • #6
            The WW2 gun you referred to was primarily used to reduce Sebastepol, on the Eastern front, and Warsaw. There were two, I think, and they were spectacular failures. Each weapon required something like 1500 support staff, and they did not have a very long range. They took literally weeks to assemble and range in. As far as precision of construction, they did have the advantage of being shell guns; thus the gas seal in the breech was the casing. Allied guns, on the other hand, (big ones,) relied on a pretty precise fit of the breech block and an obduration pad for sealing.
            FWIW, the largest calibre gun prize goes to the US Army. It was a smooth bore muzzle loader, (I guess it qualified as a mortar,) named Little David-36" bore! Never saw action, the same as the 44,000 lb bomb. It stands outside the entrance to the museum at Aberdeen Md.
            For a WORKING railroad gun, but a measily single track unit, the prize goes to "Anzio Annie." It was one of several 25 cm guns. They used a specially designed projectile with splines which engaged the rifling. As a result it only had a small copper gas check ring. The reduced friction permitted it to gain many miles of range over a conventional design.
            Duffy, Gatineau, Quebec

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            • #7
              Check this one out. I want one of these in my back yard to play with. If you want to see this gun it is in a Muesum in Maryland.

              http://www.youtube.com/watch?v=nAxySDG_jjs

              This is the one your talking about. It took 1300 men 15 minutes to load and shoot.

              http://www.youtube.com/watch?v=3oLC9...eature=related

              http://www.youtube.com/watch?v=fyFKb...eature=related

              http://www.youtube.com/watch?v=fyFKb...eature=related

              The Germans are some amazing engineers.

              http://www.youtube.com/watch?v=DEMvyM_ZBC4

              http://www.youtube.com/watch?v=2JJFQ...eature=related

              http://www.youtube.com/watch?v=ULNDQ...eature=related

              http://www.youtube.com/watch?v=a5a69...eature=related

              http://www.youtube.com/watch?v=QWQh8...eature=related
              Last edited by gary350; 08-14-2010, 12:59 AM.

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              • #8
                It's pretty hard to beat the US M-65, towed or flat car mounted.

                Free software for calculating bolt circles and similar: Click Here

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                • #9
                  I like that picture Evan.
                  I read about the first (and only?) artillery fired, atomic shell.
                  Crazy.

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                  • #10
                    The US and presumably the USSR spent a lot of time and money exploring the concept of theatre atomic weapons and tactical weapons. They developed weapons small enough to be delivered by just about any existing chemical explosive delivery system including mortars.

                    What they either didn't appreciate of just didn't care about is that once you escalate to using nukes there isn't any incentive to keep using only small ones. The size of the railway guns is proof of that.
                    Free software for calculating bolt circles and similar: Click Here

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                    • #11
                      Start here > http://www.practicalmachinist.com/vb...arrels-168975/

                      Look @ posts - 42, 51, 53, http://www.practicalmachinist.com/vb...75/index2.html

                      Nice pics of some big machines here http://www.shipsnostalgia.com/guides...xford_and_Sons

                      http://www.youtube.com/watch?v=opp_6uhGfKw

                      john
                      John

                      I used to be indecisive. Now I'm not so sure , but I'm not a complete idiot - some bits are still missing

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                      • #12
                        Thanks for the Information

                        I appreciate the information provided. It still blows my mind the size of those machine tools - lathe cross-saddle with a place to stand!
                        Bill

                        Being ROAD KILL on the Information Super Highway and Electronically Challenged really SUCKS!!

                        Every problem can be solved through the proper application of explosives, duct tape, teflon, WD-40, or any combo of the aforementioned items.

                        Comment


                        • #13
                          Bigboy. I googled "german canon" and came up with this for one. I suspect it's a pic of the one you're talking about.



                          Here's another one but huge file so will do a link to it.

                          http://www.hmdb.org/Photos/13/Photo13747o.jpg

                          This one is US I think:

                          http://www.hmdb.org/Photos/13/Photo13758o.jpg
                          Last edited by Your Old Dog; 08-14-2010, 10:47 AM.
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                          Thank you to our families of soldiers, many of whom have given so much more then the rest of us for the Freedom we enjoy.

                          It is true, there is nothing free about freedom, don't be so quick to give it away.

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                          • #14
                            If you ever decide you'd like your very own.....

                            http://www.davetootill.co.uk/product.aspx?ProdID=5
                            Terry

                            There's only one way to find out, might as well get started now!

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                            • #15
                              Now, THAT'S what I call a Radius Turner!
                              Next project, maybe?

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