Bofors 40mm L/60 Autocannon (Part 2)
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- čas přidán 23. 11. 2020
- The Swedish Bofors 40mm, an anti-aircraft autocannon, gun was adopted by many countries. It fired a 40mm shell at a rate of 120 rounds per minute. This animation, Part 2, shows an L/60 gun on a basic mounting and explains how the trigger and latches operate to regulate the operation of the gun. The operation of the hydraulic recoil cylinder is demonstrated, as are the actions of cocking, loading and unloading. Only a basic mounting is shown - later mountings were powered for training and elevation and had more elaborate sights but are not covered in this animation.
Part 1 showed the details of the firing and loading mechanism and a link is provided at the end of the movie.
Animation created using Cinema 4D. Music: 'Borderless' by Aakash Gandi - Věda a technologie
Stunning animations! I am an old Bofors instructor in Canada. I also own a restored L60 that we take to heritage events and fire blanks from. I wish we had had your wonderful work when we were teaching at the Air Defence Artillery School!👍👍👍🍁🍁
Thank you. Sounds like I got it mostly right (after reading the manuals!)
@@vbbsmyt I can't see any problems.😊👍👍👍
Please upload some footage if you have some.
Are there two firing pedals? I’m looking at FM 44-60, 40-MM FIRE UNIT, February 1945. It says that the Loader and Firer (#7) presses the rear firing pedal. Where is this pedal? Elsewhere, it says that the Lookout and Vertical Gun Pointer (#9) fires the gun using the front foot pedal, which he presses with his right foot. I can see the the front foot pedal on the gun at the National Museum of the United States Army, but I cannot locate anything that looks like a rear firing pedal. Many thanks!
I also own a bofors, how do your blanks work?
Served 93-94 in german navy , gunner on a boat with Bofors 40mm HS99. Love this Video, well done !!
Man can you tell me do 40 mm shells explode if time delayed and I if you know can you please tell me how it happens by the way thanks for your service appreciate it 😊
Servi numa peça de artilharia Anti Aérea usando um canhão desse em 1985 no Brasil São Paulo
Really nice look at the recoil cylinder in this one! Don't think I've seen any videos nearly as detailed as this one.
Lot of detail, recoil. Has a lot more going for it ,with oil in the cylinder lubricated the refined parts.
That is a beautiful mechanism and an amazingly detailed animation. Wonderful work!
My dad was a "Bird Gunner" during the second world war. This was his gun for most of it. Very interesting to see the engineering behind it.
Is it just me that thinks the little 'casing slide' is really cool?
That's what I thought too
I like it also
Cool and necessary, imagine the pile of brass this thing could make lol
I showed your video to my grandfather who served on one of these when he was 17yo: he loved it!
That means a lot to me. Thanks.
I'm fascinated to Bofors autocannon. Because of your video now I understand how it works! Thanks a lot!
“This looks really over complicated”
Says me, someone who has built surprisingly few 40mm autocannons
@@Feroce i th ink that Bofors still makes the Bofors 40 mm gun so spare parts should not be a problem.
As an MTB model boat builder,this excellent details brings things to a better perspective,great info and details ,thanks so much for the video
Awesome
Very nice animation
Next part, sweet!
The most amazing part to me is that two people are required to operate it and how to coordinate them into hitting something
The entire gun crew is more like 4-5 people (not counting the possible director controller above, on shipboard mounts)
You have the trainer, the elevator (who also fires), the mount/gun captain (if he is British and in the Army, he also has his own set of sights), and then one or two loaders. And that is for a single gun. With each extra gun in the mounting you have to add at least one loader, possibly two (although one's job is just to fetch the ammo and pass it to the guy actually feeding).
If you count the director control crew you also have the guy working the Mk 51, and a talker.
in the later period it switches to a hydraulic system which seems to only need 1 people to aim the gun, after the war some were retrofitted with radar and stabilizers to be even more accurate and deadly. In modern days miniature VT, or computer controlled time fuse were installed making a direct hit unnecessary.
Thank You for this animations
Very very nice models and animation. I am also a 3D modeler and currently working on the Japanese version of the Vickers 40mm i.e. the Pom Pom. Would love to see one done on that gun as there is very little information available.
Great explanation thanks :)
Great video
Finally i found how clip loading mechanism work
Fun facts about this gun:
Americans fitted it with a proximity fuse to destroy aircraft.
The gun was commonly fitted on ships during WW2 as an AA gun in all types of mounts. Single, duo and quad mounts (there's some very famous photos of these guns firing during the war in the Pacific and Mediterranean theaters)
It used to mounted on the American AC-130 gunship...probably one of the last times it was used in combat was on this mount...I think it got replaced with a different cannon because the ammo was no longer available.
Also FPS Russia on YT fires one of these...it's a pretty sick video.
Oh, yeah...it got a funny cameo in the Steven Spielberg movie 1941 made in 1979...the movie is kind of crap but it's got an all star cast and because Spielberg it's better than it should've been...it has it's moments.
Thanks for making this video vbbsmyt! it's an interesting cannon! so cool to see how it works! keep it up! happy holidays!
False. British 2pdr tank cannons were completely different from the 40mm bofors cannons. They were single shot, manualy operated guns as opposed to the fully automatic bofors guns. Only british tanks to mount the bofors were some aa variants of the Valentines
and the Crusaders. And at the start of the war, british had their own 40mm aa gun based on the 37mm maxim "pom-pom" that in turn was based on the maxim machine gun.
as Ville said, the 2pr was a different gun, used in anti tank batteries and on tanks, fired a different ammunition in a different casing
the 40mm Bofors was effectively mounted on crusaders, but as mobile AA platforms and not AT guns
the Bofors never saw VT fuses in WWII, as with the technology of the time is was squeeze even for 5" guns (due to the vacuum tubes inside)
never heard of quintuple bofors mounts, and can't find about them on the web. source pls?
the Bofors L/60 was effectively mounted on the AC130 (A, E, H and U), was discontinued not because of a lack of ammuniton, but because new requirements changed the armament on the planes, the guns are no longer manufactured (for the last planes built with 40mm L/60, they had to salvage the guns from target vehicles) and the planes using that weapon are being removed from service, the ammunition supply will follow the needs
@@quentintin1 He is propably confusing them for the the quadruple and octuple 40mm pom pom mounts used to compensate fo the pom pom's lacking muzzle velocity.
@@villepore7013 ah, i was thinking that he was mixing guns but i could just think of the 1.1"/75 as i knew that the pompom only existed in single, quads or octs, but even the 1.1" only existed in quad mounts
@@villepore7013 fixed that!
Always great to see another one of these guns animated to such detail, it really does give you an appreciation of the art and science that goes into them. I found your work from c&arsenal's machine gun videos and it always has impressed me, I was wondering do you work from blueprints, live examples or a mix of both?
Depends. I use drawings from books or downloaded manuals from the web. The Bofors drawings came from the Historic Naval Ships Association manuals. Generally I also try to dismantle and photograph the smaller guns. I was able to photograph one Bofors in between succesive waves of lockdowns in the UK. Blueprints! - with actual measurements! - if only.....
The Bofors 40mm, the greatest gun even made.
Damn these guns are awesome
Amazing work! 🤩🤩🥰
Big fan of your work.
Super - thanks from Poland
Отличная пушка, хорошая скорострельность и баллистика + не быстро перегревается , учился на ней играть во флот в вартандер
Як би ще оптиту добавити, далекої прицільності, і для одного оператора, створити, щось похоже на ігрові окуляри, який би через оптику прицілу міг би бачити, Орлани рашистів.
It amazes me to see how such an old system is so complex!
I found my new favourite history channel
I did the basic maintenance course for the R.A.N 20 years ago. Was a lot fun striping this old girl down and putting her back together.
I remember being impressed by the sequencing pawls which I saw as a mechanical logic board.
In our navy to unload the gun we used the "Chopping board" I believe it was actually a real wooden kitchen board not some special tool to push the last two rounds down into the loading tray and out the back one at a time.
That method was also mentioned in the manual (using a tool, not a chopping board that was just as effective), but it was more fun to show the 'official' method of unloading.
Thank you.
Great!
Complicated simplicity I would describe it as if that makes sense? A great series very cleverly done and a sub.
What simple good manual video of bofors 40mm l/60
Excelente.
Really awesome... Salute to your dedication ❤️❤️❤️❤️
this well camouflaged wilderness in a strategic and powerful place
Nice job. :-)
Ein hervorragendes Geschütz, die Bofors 40 mm. L/60 Automatik Kanone. Wie in einem Fachbuch beschrieben wurde sie in den 20 er Jahren gemeinsam von Bofors und Krupp entwickelt, deswegen ist es mir völlig Unverständlich das dieses Geschütz nicht von der Reichswehr und später von der deutschen Wehrmacht übernommen wurde? und sie an der 3,7 cm. Festgehalten hat. Allein der Unterschied beim Geschossgewicht, 4 cm. Bofors 930 g. 3,7 cm. 650 g. bei mindestens gleicher Kadenz oder besser,und größerer Reichweite, Wirkung am Ziel muß doch den Verantwortlichen klar gewesen sein! Wo ist da,daß Motto, "für unsere Soldaten, nur das Beste" !
Yeah ,this is the beauty
как всегда восхитительно!
The introduction of color analysis and thermal induction aiming control can improve the shooting deviation caused by sea waves when a warship is traveling
Great work. The "disengage latch" you show at 8:12 was unique to the single barrel guns. That feature is to prevent the last round from firing, and leaving the weapon "uncocked", with only one round in the magazine. That would require the weapon to be recocked after another clip was added, to fire. This way, adding another clip will allow firing to begin again immediately. This switch allowed the gun to fire that last round (the one on the catapult), leaving just the one round in the Mag, nothing on the catapult, and the breach block open.
The breech block will be Closed after the round on the tray is fired, not locked open. (Edit: I was wrong, it is locked open)
@@vbbsmyt Hmm. First off, know that I have no hands experience with this beastie, but from what I have been reading, I infer that the weapon fully “cocks” after a round is ejected. If there isn’t a round pushed onto the catapult (tray) then pressing the trigger only activates the catapult, and without a round to catch the extractors and close the block, it remains open. (There is a lever to the front of the case to tickle the extraction levers and close the breach should this occur.) Still to fire a new round, the cocking lever would be needed to reset the catapult spring and rammer levers position to receive the next round, and have the round forced down onto the tray. As mentioned though, I could be wrong.
Hey, have you thought about doing the 20mm Oerlikon cannon?
Gary. You are correct. The breech is locked open - my bad! Comes of believing my animation (which had the breech automated on a timeline).
As for the 20mm Oerlikon.... watch this space....
One of my favorite AA gun and one od the most successful AA gun on WW2. Can come to coaxial, twin, triple and quadruple mount
Очень познавательно. Спасибо.
Thanks.
Спасибо. Дивная и чудная механика. Видео очень красивое
What document sources did you use? Could you link that in the comments and possibly make the 3d models available? id like to 3d print a scale model!
Timeless design, like the M2 Browning .50 cal. How do you improve on perfect?
Hola muy bueno, podrías hacer un vídeo de 40/70 también?
can you please make on one how the 30mm bushmaster autocannon works?
My grandpa was a bofors gunner during his national service in the danish homeguard in the 1960s
super.
Amazing work! 40mmL70 please!
I want a part 3. How the elevation and horizontal aiming works
those 2 Rotating handles are the horizontal and elevation they are litterly a screw going into a gear to turn it.
nice
Well done! Please do the MG 34 and the MG 42. Thank you!
Wonderful animation. I am an instructor in the Swedish armed forces where we use the 40/L70 on our CV90’s. It’s an amazing gun that with the help of modern aiming and stabilisation delivers death and destruction to this date. If I had animations like yours at hand for my courses I could deliver even better results. How would you like to make an animation on the 40/L70 cannon?
Interesting idea. However, as always, I need a good set of drawings and preferably a manual explaining how the gun works. Do you knw where I can get these?
@@vbbsmyt Not straight up, but I have som ideas. If we could communicate by email instead I can give you som more information.
God Bless Sweden. Thanks for Sweden people from Ukrainian people!!! Thanks God Bless Sweden!
Nice work! The next time make one of the RP-46 Machine Gun
Was this made with the Solidworks program?? If so, this is extremely impressive! This must've taken quite a bit of time to render/program! In any case, VERY well done.
Cinema 4D. And yes it took months to build the animation. Thanks.
can you make a video for the m256 smoothbore as well ?
Dont know what I expected, this is certainly a 40mm L/60 autocannon
If it weren't for the fact that the gun is clip fed, it would make for an amazing IFV weapon. The 3P round is extremely versatile being able to deal with anything short of medium armor vehicles (IFVs and light tanks that have armor rated for autocannons). And the existing APFSDS round is said to be able to penetrate atleast 120mm RHA, a full length penetrator (similar to M829A3/4 or DM73 where the penetrator nearly touches the primer) might be able to penetrate the frontal armor of older MBTs like T-55 or M60. My guess is that the big rimmed cartridge makes it ill suited for IFVs since the vehicles wouldn't be able to carry lots of ammo.
A two-generation more modern version exists (Bofors 40mm Trinity) and I have been a demonstration fire exercise, that was impressive). The mechanism is turned upside down. Two magazines 50+48 rounds and 480 rounds per min firing rate (this version from 1936 is only 120 rounds per min). Each round is programmed during the loading of the barrel and is even more advanced than the 40mm mk3 L70 3P rounds.
New rounds are just kicked into the breech like that? And it even works at max elevation? That seems an insane concept, but that's why I'm not a gun designer I guess.
So how do you do your magic? Do you have construction plans or did you take measurements from a real weapon?
With such amount of force,
You wouldn't want to be standing a deck below this thing
Or else you'll get shell casing wacking you Leaving either a bump, or a brand somewhere on your body
The casings shoot out of the trough fast enough to break your knee if hit by one. I used to teach Bofors drills.😊
My grandfather said they would often dent the gun tubs on his ship, he was at Okinawa
Wow is great.I wish you up load 40mm L70 too.
does anyone know if there is a flak timer on the 40mm HE rounds, and how that timer is set.
Thank you
14.5 amg ad gan how fairing works
Ooh pt 2
This is an amazing video! Now I think I understand how this gun works. One question:What are those two black tubes below the barrel at the front. They appear not to move with the gun when it elevates.
The tubes contain ‘equilibrator’ springs. They can be seen from 0:30 to 1:20 in the Part 2 movie. As the weight of the gun is well forward of the pivot point, they counteract the torque, especially at low elevations, and make it possible to elevate the gun using a simple hand crank.
Nicely done video, but do you have any plans on doing the 40mm pompom or the 37mm Flak 37/42?
Also what are the 2 black clyinders for?
Thanks for your comment. The black tubes are called 'equilibriators' and contain springs that balance the off-centre weight of the gun so making it easy to elevate. The springs are most compressed when the gun is horizontal.
As for other AA guns, I need good drawings and ideally a user manual. I haven't searched for drawings on either gun, but if you know where I can get them, please contact me.
FINALLY!!!!
Hey, can you do m2 browning?
Could you please do MG-14 or MG-17 if possible?
Wait, am I missing something on the trigger mechanism, or would you be able to achieve automatic fire while in single-shot mode just by pushing the firing pedal only half-way?
I think you're correct, and I've seen small arms that use a disconnector like that. It kinda bothers me too, but it works ok because a human operator probably won't be able to push it that exact amount.
What is the purpose of those two black tubes that pivot separately under the cannon?
Equilibrators to counter-balance the weight of the muzzle. The guns are front heavy due to the trunnions being set so far back.
Guns, - fun for some but completely old fashioned on invention.
Une des meilleurs armes anti aérienne de la 2ème guerre mondiale
i am a fan of torpedo,can you make more videos about torpedo.
просто мечта
محتاج اعرف المدفع ده انتاج سنه كام بالضبط
Jadi seperti itu caraa kerjanya.
Luar biasa tembakanya.
Note: If you watch the auto fire of the 40mm bofors on 2x speed, it is like the speed of a doubled barrel one.
Very great video. Would you please advise what software can create this 3D drawing?
Read the description
If extraterrestrials attack us, we can came over here to find out how to make useful protection.
Lets just hope bofors guns can penetrate alien metals
In Taiwan’s navy, it was improved to include a computerized shooting control system and electric shooting, like CIWS
великолепно
Please do the work of Bofors 40mm L/70 Autocannon
You can make a video of how a tank works
Brill. 👍☘️
Mine had dual guns!
Good vidéo. But why does the projected bullet explode?
The nose of the projectile is hollow. If it hits anything solid (MV 880 m/s), the nose crumples and the air is rapidly compressed. Compressed air is hot, and this is driven onto the detonator which ignites and explodes. It seems strange, but that is what the manual says.
@@vbbsmyt tx
4:08 Now I want to design a weapon that uses a sealed cylinder and a vacuum chamber for arresting recoil and has a fixed firing pin, also it does not push the next bullet forward when loading, it uses the energy stored in the vacuum chamber to ram the bullet backwards into the firing pin to fire it while simultaneously closing the breach in the same movement. ...
(I never said it would be a practical weapon, nor did i say it would be safe to use...)
A little bit similar to M41A Pluse Rifle...
War thunder tought me, that this not an anti-air gun.
How about doing a film on the ANTIKYTHERA MECHANISM. Now that would be good.
Can you make animation of CRN 91 gun?
兩個射手兼瞄準手後面要安排一個至兩個裝填手
Четверть века,25лет тому я сидел в кресле стрелка(слева),но крутили,вертели,разобрать не дали:)))Прицел был существенно сложней.Была сделана в США,1942,помощь союзников.
Excellent. The more complicated sights are too difficult for me.