Now, that's a gun! ... trivia for historians and other gun nuts ...

LetsFetz

New member
How's your historic knowledge? ... what gun is that and what was it used for? ... it has quite a unique name and, all but one of the pics below are illustrations of American artists, who - funny enough - never saw the gun ... in fact few people ever saw it and after the war it was destroyed and any proof eliminated ... the specs and performance data of that monster are mind blowing ... so was the method through which the necessary data were experimentally determined ...

bfg_book2.jpg


bfg_clipping.jpg


bfg_book.jpg


Interesting facts and hint:
Caliber: diameter from 21cm to 23,5 - length from 95cm to 111cm - weight from 200 to 230lbs ... the "from - to" is significant, as the "from" applies to the first and the "to" apllies to the last of 65 slugs, which was the maximum of shots that could be fired ... after that the barrel was exchanged and a new barrel started with a 21cm/95cm/200lbs slug ... the reason for this procedure is obvious, or not? ;)

cheers and beers
LetsFetz
 

Tamara

Moderator Emeritus
Yup, that's the Paris Gun; sometimes erroneously called "Big Bertha" (which was actually a nickname for Krupp's 42-cm seige howitzers which were used so successfully to smash the forts at Leige).
 

Jim V

New member
When the first shells hit, the people in Paris thought they were being bombed from German lighter than air ships because they did not hear the gun's firing. Or so the story goes.


Wasn't the crew need to man the gun, something around 1,000? I can't remember but it was huge.
 

Johnny Guest

Moderator in Memoriam
LetsFetz wrote - - -

... the reason for this procedure is obvious, or not?
Didn't it have to do with barrel errosion? With each round, the bore diameter increased by tiny increments, and the shells were numbered to take into account this effect. Best I recall . . .

Best,
Johnny Guest
 

LetsFetz

New member
... not bad ... not bad ...

bfg_book_cover.jpg


... this is the book from which I'm drawing all these wonderful stories and facts ... apart from the difficult to read old-german letters, it's a real treat ... we are talking about 1934 propaganda type of power monologues, mocking the enemy where possible ... old Adi himself could have been the author :=) ... hilarious at places - mind boggling at others, especially when considering the demand put into the builders and scientists and the accurate results they eventually presented ...

... talking about results ... I was in tears, when I read about the first tries with another long range cannon ... the venue was the "Schießplatz" of Meppen, the cannon a 35.5cm caliber monster, calculated and calibrated to shoot exactly 20km at an angle of 45 degrees ... the shot was fired and it also impacted ... however not where they had it intended to impact ... kinda like in the "There's something about Mary" movie - "where did it go?" ... :D ROFLMAO :D ... only later via the "Wehrmachts Alarmnachrichten" they learned, that they had shot across the border into the neighboring Holland ... ooops - sorry ... the Dutch obviously didn't have a clue what had hit them ... the shot went exactly twice as far as calculated ... by accident they had learned about the principles of ballistics for a projectile entering the stratosphere ... through that they had also learned that an angle at or around 50 degrees was ideal for the "Paris Kanone" ... the distance there was 128km and the granade spent 2 of the 3.5 minutes airborne time within the stratosphere reaching tops at 40km ...

... this is an impression of what the French THOUGHT, the cannon looks like:
bfg_yathink.jpg


... and this is where they were hit throughout a campaign that went on for months and utilised three of those Leviathans of a gun:
bfg_map.jpg


... French scientists fought battles over the caliber of that mysterious German "Wunderwaffe" ... "21cm! no, 22.5cm! no, 23cm!" ... well, actually they were all correct, because every shot out of 65 utilised another caliber size ... the reason being, that with every shot the barrel expanded by the fraction of a milimeter ... not only that, but the whip-slashing effect of the detonation also bent the barrel ... this was another one of the problems the scientists were presented with - and failure was not acceptable ... "Wir dulden keinen Widerspruch!!!" :=) ... supporting the barrel with rods etc. was out of the question, because once bent - that's it ... sooo, typical German they came up with an easy one ... they said: "let the barrel bend, if it wants to - we'll bend it back before the next shot" ... chains, claws and a winch type of "Flaschenzug" (dunno the English word for it) was used, with which they bent the barrel right back after every shot ... the chord line twisted by 5000 atmospheres of pressure was re-alined by just another simple device ... they attached a screen with a cross to the muzzle and a conventional scope at the other end of the 34 metre barrel ... a "Peiler" eyeballed and shouted commands to the guys at the winches ... they did that between every two shots and thus successfully fired more than 300 accurately placed slugs into Paris ...

... other and many more measures were taken, to grant accuracy of each and every single shot, such as powder being stored at exactly 15 degrees Celcius etc. etc. ...

well guessed guys and gals ... pdmoderator's link (thanks) gives it away in a nut shell, although some of the data are not quite correct ...

... any questions? ... I got the book infront of me ... love it ...

... and please forgive us our typos and grammar ... :rolleyes:
 

Long Path

New member
This stuff always struck me as odd. No real target could be hit with it, except "Paris." Only really useful as a psychological weapon of terror.
 
No real target could be hit with it, except "Paris."


Not much different in that sense than the later V-1 and V-2.

The V-2, in particular, was supposed to be accurate to within a half mile, when most of the time it was off target by a factor of 10 or more.
 

Hutch

New member
While we're on the subject of Teutonic uber-cannon (sorry, I don't know how to generate the um-laut), what genius decided that this was a good idea? I'm thinking of the railway guns used in the Crimean campaign in WWII. For the amount of foundry time, ammunition fabrication, the laying of specialized track, a regiment to man and guard it, yadda yadda, the dumbasses coulda built a gazillion (maybe more!) field pieces of standard pattern, that actually had the agility and deployability to do them some good ON THE BATTLEFIELD, which is where the issues are decided.
 

Johnny Guest

Moderator in Memoriam
Lavan:

"Did they ever make a holster?"

Sure they did. All fulla water tight, dust proof flaps, straps, brads, mag pouches, extra pockets, proof marks, and I dunno what all. Superb execution.

Oh, wait - - -Those were just for pistols! I guess you were asking about one for the Paris Gun?:p

Best,
Johnny Guest
 

Bruce626

New member
Mike sez...


No real target could be hit with it, except "Paris."

Back in the olden days, hitting Paris from afar was a pretty cool accomplishment... and the V2's later also. In today's modern world I think we forget how mindboggling some of these WWII things really were.

Historians will undoubtedly help here, but prior to this Paris gun, ranges were basically enveloped by battleship naval guns (the big guys) and howitzers (20 miles?).

Think of the WWII bomber movies with the guys looking thru sights and yelling "IP" vs today's smart bombs... they were primitive, but state of the art at their time.

--Bruce.
 
Wasn't that 80 c.m. gun the Gustav? It was so wide that rode on twin railroad tracks. The gun was designed as a "bunker buster" to penetrate into fortresses embedded deep within bedrock and covered with steel reinforced rebar. While it worked effectively at the Siege of Sebastapol (WW II and not the Crimean War ;) ) you do raise an issue of cost effective.
 
Top