Bofors 40mm Autocannon 1943, Part1 

atleast it wont shatter when it falls

I believe There are still whole bunches live rounds around the world

@@xenotechfreak can't guarantee the floor won't crack instad though XD

I have 2 of them from when I was in the army (1994). We had model M1 1941. Talking about ancient technology. :/

@@nenad8845 I was in the army (1995) and using it as active weapon. The ammo was build around 197x locally (Taiwan)

Not really if you have access to the game World Of Guns, you could just steel the animations off of that

The skill and commitment it takes to actually build these things, all this effort just to kill and dominate people...

@@firefox7801 kill or be killed

Some of what this man does may very well be the only historical visualization left soon of any of this equipment. Enjoy his work, and support his talent for posterity.

@@marknovak8255 I'll nod my cigar to that, sir.

Technically the postwar versions from the L/70 onward have a heavily modified mechanism where the loading tray tilts up so the empty case gets ejected under it before it tilts back down to load the next round, but otherwise yes, the basic idea is still there.

*yeet*

Didn't expect it'd have vertical sliding breechblock like a regular cannon.

@@arya31ful yeah same I thought it’d be more like a rifle (rotating lugs) locking system. Then again it is 40mm

i believe "yeet" is straight from the swedish technical documentation.

This isnt the best example of an autocannon as it functions more like a traditional quick firing gun (QF) with an automatic loader attached to the back. Most autocannons are more similar to machine guns in their machanism.

@@Blockhaj Nice autocannon to show would be soviet/russian 2A14 Afanasyev-Yakushev autocannon, used in ZU-23-2. Belt fed but it has vertically sliding breech block (or something very similar) like this Bofors gun.

@@notmilandia8461 Oh wow. Can you send an animation?

@@yelectric1893 I dont have an animation about it. Maybe one day someone will make one.

That's very true

Indeed

The idea of making a piece of history inert is SICKENING.

The 20mm oerlikon is pretty much just a really scaled up straight blowback smg

@@a.t6066 Though you're right in the operating principle, the mag release safety measures and so on and oddly complex + the sear housing is spring-loaded to dampen the impact of the bolt being hung-up by it. The guy made a vid on it now though!

That's what makes the gun fire so fast; on normal guns the bolt has to move all the way back for extraction, and then forward to ram the next round. Since the bolt has to be strong enough to withstand the force of firing, it's heavy, and the recoil and springs can only push it back and forth so fast, limiting the rate of fire. But in the Bofors, the breechblock moves down and up just far enough to clear the breech (much less distance), and the rammer only moves back and forth far enough to throw the cartridge into the chamber (also much less than going all the way back and forth). The rammer is much lighter than a normal bolt since it doesn't have to withstand the force of firing, so that lets it move even faster with the same spring energy. Because the breechblock and rammer have less mass and don't have to move back and forth as far, they can be pushed/cycled much faster than a bolt with the same energy, and this made the gun fire as fast as it did. Every other AA gun in WWII either was less powerful or fired slower than the Bofors, which is why the Bofors was so successful. (Apparently Bofors did initially develop guns with a normal bolt, but they couldn't get a decent rate of fire until they adopted this idea.)

Oh but it was used with rifle caliber ammunition to great success - the Madsen light machine gun is closely related, the only major difference being that the Madsen uses a pivoting block while the Bofors uses a sliding one. The thing is that you don't need such a complex mechanism for a rifle caliber automatic weapon, a simple bolt moving back and forth will do.

Bofors made a 20mm aa gun too and it works almoast the same way

Pre-ww2 era

Someone's on a watch-list 😅

Unfortunatly Sweden did suply germany and allowed them to move troops throug sweden, but we did allot for the allies to

What? You were in the army at 12/13 yrs old?

@@keithw4920 good catch ! My math is bad since school.....haha

Yeah it does

It is designed to give it enough force to be able to fight gravity at any angle. This can be easily figured out by using the equation for force F=ma or force = mass x acceleration with the mass being the shell and cartridge which would most likely stay the same, then you have acceleration or force, at which point what I would do is I would chose a random force(any number) rearrange the formula to A=f/m and simply increase or decrease the force to get it higher than 9.8m/s/s(gravity of earth) at which point the shell would remain stationary in the air, then you just increase the force to get it there faster. Simple btw if you are doing physics or are doing engineering and I did anything wrong please do tell because I am still trying fully grasp everything

@@Cooper_Chu everything perfect but acceleration is m/s^2 = m/(s×s) = (m/s) /s because acceleration is constant velocity change over time

Tl:dr: it just throws shell hard enough to feed at any angle.

@@kino_61 Thank for the feedback but please, stop being pedantic, it works either way

Thank you.

Thank you.

So awesome. I'd be happy to just walk through an AC-130 and here you were paid to fly around in one.

Thats how most breech loading artillery works, even to this day.

Perfect yard art for your Little House on the Prairie. Perfect for wandering packs of dinosaurs.

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7_7zG7RSgss.html Is this what you were looking for?

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-GkOP8Lwdmgg.html The guy who made this video also made one on the Hotchkiss revolving cannon.

@@garygenerous8982 thanks guys, but those are technically rotary cannons, not revolver cannons. Revolver cannons only have one barrel.

@@samhansen9771 Ah ok, my mistake. Hope you end up finding what you are looking for.

@Jack Renders Bofors is Swedish.

@Jack Renders :)