Semovente Contraerei 20/70 Quadruplo (M15/42 AAA)

[Guest]

Semovente Contraerei 20/70 Quadruplo (M15/42 AAA)

 

 

In 1942 the Royal Army had ordered the development of an anti-aircraft aircraft for use in the theater of North Africa and capable of providing some protection to the mechanized columns, often a target of the British air force without being able to oppose any reasonable defense. To save time and materials the newly designed M15 / 42 hull was taken: the original turret was removed and replaced with a polygonal obtained by welding, open on the sky, rotatable by 360 ° and containing a quadruple installation of 20 cannons. mm Scotti-Isotta-Fraschini 20/70, with rise between -5 ° and + 90 °; these pieces had been specially modified so that they could use disintegrating mesh belts with a consequent increase in the speed of shooting at 600 strokes per minute per cannon. The only other modification concerned the suppression of the two machine guns Breda Mod. 38 in casemate, whose opening was covered by a 42 mm thick plate; the crew then descended to three men, two in a turret and the pilot in the hull. A prototype was built that was presented and tested at the Army Research Center in January / February 1943: compared to the original vehicle, the self-propelled vehicle was 14.7 tons heavy, was taller (2.55 meters) and managed slopes of the 60%. In March he went into service as "M15 / 42 Carro Contraereo" and was assigned to the VIII Auti Regiment stationed in Cecchignola in Rome, where the Germans found him and captured him. Actively used, in April 1945 it was operational in the V SS-Freiwilligen-Gebirgskorps, which fought the last battles against the Red Army in Germany, in the area of Teupitz

One source states that two prototypes were delivered: one of these would be transported to Tunisia, where it was tested in real combat conditions. It remained on African soil after the surrender of the 1st Italian Army and the 5. Panzerarmee occurred in May 1943.

 

In photo: 20mm Isotta-Fraschini quad cannon configuration.

 

 

Edited November 5, 2018 by Guest

[Serpiko82 7,874]

This is undoubtedly one of the Italian vehicles I'm (we're) looking forward to the most. A real steel, full-blooded Italian baby-Wirbelwind. Allied CAS planes will have a new nightmare waiting for them on the ground. 

[Vand3rz 952]

Considering the Wirbelwind was developed in 1944, this is its Italian father. I wonder if the Germans took any inspiration from it?

[Menarrosto 2,629]

7 hours ago, Vand3rz said:

Considering the Wirbelwind was developed in 1944, this is its Italian father. I wonder if the Germans took any inspiration from it?

Mmm I don't think so... The idea of a turreted AA vehicle is quite common.

 

Any information about the turret rotation speed? 

[Serpiko82 7,874]

39 minutes ago, Menarrosto said:

Any information about the turret rotation speed?

 

Very good question. That, and the total ammo count, can admittedly make a huge difference between an excellent and a mediocre SPAA. 

[MadMax_ITA_ 789]

On 04/12/2017 at 11:53, Serpiko82 said:

 

Very good question. That, and the total ammo count, can admittedly make a huge difference between an excellent and a mediocre SPAA. 

Starting from this I found out the I ternal layout, it was open topped, 2 barrels on one side, a steel plate, 2 other barrels and all around armor protection with the exception of the top layer because of the elevation. I also found out it had an electrical handling(sry for my English, the mechanism for rotating the turret) so I suppose if the original m15 had the same one we could just put the data one near the other and comparing them using the turret weight as a reference, just a simple equation. I found other documents on weight and length if needed

 

Make this happen for Italy boys 

Edited November 6, 2018 by MadMax_ITA_

[OddPhenomena 1,001]

Make it happen !

 

[MadMax_ITA_ 789]

I think that I will make an article in the suggestion section if there isn't one yet. I think the info we had the new image and the other info I found could be a push to have it, keep searching guys

[Guest]

14 hours ago, MadMax_ITA_ said:

I think that I will make an article in the suggestion section if there isn't one yet. I think the info we had the new image and the other info I found could be a push to have it, keep searching guys

There is yet a post in the suggestion section, you could add more infos there if you have any.

[MadMax_ITA_ 789]

Sure I will, today is not so hard at school so I won't sleep during the English lesson and I will add it xd

[SergenteA 223]

[MadMax_ITA_ 789]

46 minutes ago, SergenteA said:

and people said it wouldn't be coimg but now i see it's glory

[Vand3rz 952]

It's beautiful! They are all beautiful! Just give me a moment. 

[Guest]

26 minutes ago, Vand3rz said:

It's beautiful! They are all beautiful! Just give me a moment. 

xD

[Menarrosto 2,629]

19 hours ago, SergenteA said:

But... Is it normal the lacking of a part of the frontal turret armor?

[MadMax_ITA_ 789]

Yes as you can see there is a mechanism there so it would be unable to be used with the armor there

[FuryMkI 732]

On the russian forum, someone is trying to report its firing rate to 230/250 RPM based on the ground variant of the Scotti-Isotta-Fraschini 20/70.

 

Personally I am all for historical accuracy so if it should be that way then good, if not, well anyone who has some solid information confirming its 600 rpm should post it there, I could only find a secondary source, but good enough to make them wait a bit before passing it to the devs.

 

https://forum.warthunder.ru/index.php?/topic/256007-185035-neistoricheskaya-nepravilnaya-skorostrelnost-u-20-mm-zenitno-tankovykh-pushek-breda-mod-35-i-skotti-mod-41/

[MadMax_ITA_ 789]

I'll link you the suggestion page of the semovente quadrinato, there i posted a lot of info

3 hours ago, FuryMkI said:

On the russian forum, someone is trying to report its firing rate to 230/250 RPM based on the ground variant of the Scotti-Isotta-Fraschini 20/70.

 

Personally I am all for historical accuracy so if it should be that way then good, if not, well anyone who has some solid information confirming its 600 rpm should post it there, I could only find a secondary source, but good enough to make them wait a bit before passing it to the devs.

 

https://forum.warthunder.ru/index.php?/topic/256007-185035-neistoricheskaya-nepravilnaya-skorostrelnost-u-20-mm-zenitno-tankovykh-pushek-breda-mod-35-i-skotti-mod-41/

Here take a look at what we have found. By the way I just posted everything we had, it's frustrating seeing people with no real info try to nerf our tree

Edited December 19, 2018 by MadMax_ITA_

[[email protected] 1,116]

On 19/12/2018 at 01:40, MadMax_ITA_ said:

I'll link you the suggestion page of the semovente quadrinato, there i posted a lot of info

Here take a look at what we have found. By the way I just posted everything we had, it's frustrating seeing people with no real info try to nerf our tree

That's infuriating.

And typical of the Russian forums.

[MadMax_ITA_ 789]

26 minutes ago, *BrentD15 said:

That's infuriating.

And typical of the Russian forums.

Not even giving us the chance to defend ourselves and bring some valid info while they just hate to give axis one good spaa

[FuryMkI 732]

The report wasn't accepted due to lack of reliable source :

 

https://forum.warthunder.ru/index.php?/topic/256007-185035-neistoricheskaya-nepravilnaya-skorostrelnost-u-20-mm-zenitno-tankovykh-pushek-breda-mod-35-i-skotti-mod-41/

[MadMax_ITA_ 789]

3 hours ago, FuryMkI said:

The report wasn't accepted due to lack of reliable source :

 

https://forum.warthunder.ru/index.php?/topic/256007-185035-neistoricheskaya-nepravilnaya-skorostrelnost-u-20-mm-zenitno-tankovykh-pushek-breda-mod-35-i-skotti-mod-41/

luckly form them, the weird thing is that they don't understand that the 600 rounds/minute was a statistic given for all 4 guns not for each breda.....and in game is implemented the right way 600 for all of the guns

[Vand3rz 952]

Is this supposed to have insane recoil? I can barely keep on target because after one salvo the entire tank rocks back. 

[MadMax_ITA_ 789]

58 minutes ago, Vand3rz said:

Is this supposed to have insane recoil? I can barely keep on target because after one salvo the entire tank rocks back. 

Probably it is still lacking some physic improvements like the L40 suspensions did, it is fairly light because of 15 tons but there shouldn't be much recoil because of the superstructure where the guns are bolted to and the fact that those are 20mm. The gun is practically a longer 20mm found on the AS42 and that one has not a really big recoil even if it is almost weightless compared to this tank

[Vand3rz 952]

10 hours ago, MadMax_ITA_ said:

Probably it is still lacking some physic improvements like the L40 suspensions did, it is fairly light because of 15 tons but there shouldn't be much recoil because of the superstructure where the guns are bolted to and the fact that those are 20mm. The gun is practically a longer 20mm found on the AS42 and that one has not a really big recoil even if it is almost weightless compared to this tank

I thought as much. Gaijin really needs to get their act together when it comes to bugs with Italian vehicles. Maybe this is worthy of a bug report?