Well, consider it a mini version of my original topic on Ru Forum.
As sources I will use two books from the Japanese researcher Jiro Sayama - 日本陸軍の傑作兵器 駄作兵器” and “小銃拳銃機関銃入門".
Documents from JACAR will also be used.
Type 100 early and landing has an incorrect rate of fire, it should be 700 rpm (in the game it is 450 rpm).
In book “小銃拳銃機関銃入門” on page 390 Sayama writes the following:
“十一月の試験の結果、三型改修は機能良好となり、故障もなくなったが、三〇発の弾倉を射ち尽くすのが二・○秒から二・五秒と発射速度が過大であったので、これを概ね七○○ 発/分を標準とするよう緩衝バネ、復座バネを改修した。”
“The results of the tests in November showed that the Model 3 modification (prototype Type 100) functioned well and there were no more malfunctions, but since the firing rate was excessive, taking 2.0 to 2.5 seconds to fire a 30-round magazine, the shock absorber spring and recoil spring were modified to set the standard rate at approximately 700 rounds per minute.”
Also on page 441 of Jiro Sayama’s book there is a table of characteristics of automatic weapons. At the very bottom it talks about the Type 100. In the table the weapon has a rate of fire of 700 rpm.
Although I do not trust American sources, this report will not hurt. The first American report on the Type 100 early, and in this case the landing model. From ignorance of what kind of weapon in front of them, and the similarity of the Type 100 with European submachine guns, in the report the Type 100 is called a copy of Solothurn. So in the report the Type 100 early also has a rate of fire of 700 rpm.
And I would like to turn to the original source - document C14010914300 on JACAR. This document contains information on various characteristics of Japanese weapons, including the Type 100. In this same document, the Type 100 has a rate of fire of 700 rpm.
I also recommend reading the topic from user @Killerwolf1024:
The weight of the early Type 100 is also incorrect, as it does not take into account the weight of the magazine and ammunition. The report above says that the weight of 3.8 kg is the weight without a magazine and cartridges.
Jiro Sayama writes that the weight of the Type 100 is 4.22 kg. Obviously, in this case the weight includes the magazine with cartridges, this is also confirmed by Japanese Wikipedia and another Japanese source, indicating the weight of a loaded magazine - 560 grams.
Japanese Wikipedia:
Another pretty good site that lists loaded magazine weights is:
http://www.horae.dti.ne.jp/~fuwe1a/newpage62.html
The situation is exactly the same with the Type 1. Document C13071087600 on JACAR gives an account of an experimental Japanese small arms from the 1930s.
You see, Type 1 and Type 2B are automatic and essentially differ only externally, so it is logical that Type 1 and Type 2B have the same rate of fire ≈ 600 RPM.
The weight in the document is 3.430 kg, as in our game it is 4.3 kg. I will also note that the document gives the weight with the magazine!
Unfortunately, I can’t provide any Japanese source, according to the data on the Internet, the Type 1 without a magazine has a mass of - 2.6 kg, in this case the mass of a magazine with 50 rounds will be equal to 3.430 - 2.6 = 0.830 kg. And the mass of an empty magazine is equal to 0.830 - 50 * 0.01 (mass of a cartridge) and will be equal to 0.330 kg. On the one hand, such data seems quite small to me, but if we consider that 3.430 kg is the mass without cartridges, but with a magazine, it turns out that the mass of the Type 1 with cartridges will be 3.430 + 0.01 * 50 = 3.930 kg. And the mass of a magazine with cartridges will be (3.430 - 2.6) + 0.01 * 50 = 1.33 kg. But 1.33 kg for a 50-round magazine for a pistol cartridge seems too heavy to me!
For reference, the Tokyo Arsenal 1927 submachine gun magazine for the same 50 rounds that are still in a semi-rigid belt weighs 0.925 kg (source: 日本陸軍の傑作兵器 駄作兵器, page 37, table below). Therefore, 0.830 kg for an early 50-round magazine for the Type 1 sounds very realistic.
Type 2 and Type 2A are misnamed. Type 2 - it is correct to call it Type 2B or Type 2 Ko (let the developers decide how to number Japanese weapons). Type 2A is a modification of Type 2B for installation on armored vehicles, it should be called Type 2B II or Type 2C or Type 2 armored and something like that. For those interested, the Type 2A is a 6.5mm Type 2, essentially a Japanese assault rifle. For convenience, I will continue to refer to weapons as they are currently named in the game.
Type 2 and Type 2A obviously have the wrong mass - firstly it is the same, and secondly it is less than the mass of Type 1, which is of course nonsense (it is equal to 3.4 kg)! Unfortunately, I have problems with Japanese sources here, I will be glad if you share them. Therefore, I will have to be content with US intelligence reports and the book “The World’s Submachine Guns, Vol. 1: Developments from 1915-1963”.
Let’s start with Type 2, according to the book I mentioned earlier, Type 2 has a mass without a magazine of 2.950 kg, and with a loaded magazine, the mass is 3.512 kg. But remember that we have Type 2 with a 50-round magazine, we already know that the mass of a magazine with 50 rounds is 0.830 kg, therefore the mass of Type 2 is 2.950 + 0.830 = 3.78 kg. We have also already been given the mass of a 30-round magazine for Type 2, it is equal to 0.5625 kg.
Type 2A according to the document below has a mass of 2.8349 kg, therefore with a 30-round magazine, its mass will be equal to 0.5625 + 2.8349 = 3.4 kg, in this case the developers entered the correct mass.
I will also leave a user LM4_Luna thread about errors in foreign Japanese submachine guns (it is in Russian):
The Type 99 has an incorrect rate of fire, as is the case with the Type 100 - the rate of fire is taken from American documents, which is complete nonsense. Let me remind you that the rate of fire in the game is 800 rpm. But Jiro Sayama in the table that I have already attached above gives a rate of fire of 500 rpm.
In addition, we have a video of the Type 99 firing and the rate of fire is obviously not equal to 800 rpm.
And the Japanese document C13010760700 on JACAR which provides a description of the Type 99. The machine gun also has a rate of fire of 550 rpm.
As we can see, the weight of the Type 99 is also not quite correct, the weight of the Type 99 without a magazine is 9.9 kg, a magazine with 30 rounds weighs another 1.380 kg, and everything together weighs 11.28 kg, and not 12 kg as it is now.
The Type 11 machine gun has an incorrect reload animation. The soldier always loads the hopper with ammo packs (five rounds each), even if only one round is missing. In addition, there is no animation for the ammo packs to drop out. Also, there is no cartridge in the chamber after firing has stopped, when all the ammunition has not yet been used up.
TE 4 does not have a top magazine cover rotation animation. That it should be written in Japanese Wikipedia:
“給弾方式は円盤型回転弾倉を使用し、使用弾薬は八九式旋回機関銃と同じ八九式普通実包(7.7×58 mmSR)”
“The ammunition used was a disk-shaped rotating magazine, and the ammunition used was the same as that used in the Type 89 swivel machine gun, the Type 89 standard cartridge (7.7 x 58 mmSR).”
In the book Imperial Japanese Army and Navy Uniforms and Equipment, a photo of a disassembled TE 4 disk was found. It is in this photo that one can see the similarity between the DP disk and the TE 4. The top cover of the magazine (circled in red) should rotate.
In the photo, the patch for cartridges is marked in red, and the magazine receiver is marked in orange; it moves slightly to the right, this is due to the magazine well of the TE 4 itself, which is also shifted to the right of the barrel.
At the same time, the disk itself is exactly in the center relative to the barrel.
Based on this, we can assume that the cartridges are fed clockwise and the rotation of the top cover of the magazine should occur in the same direction as in the DP - clockwise.
I would like to see them finally respond to the @NonNational topic, namely increase the rate of fire of the Type 100 machine gun to 900 rpm per barrel:
Semi-automatic rifles should have their names adjusted:
Type Ko —> Type Ko short
Type Otsu —> Type Otsu long
Type Hei late —> Type Hei late long
I also present to your attention a table from report C13071087600 from JACAR (there is a table only about short versions of rifles) and a table by Jiro Sayama from the book “日本陸軍の傑作兵器 駄作兵器” page 47.
Type Ko - increases bullet speed to 735 m/s.
Type Otsu - increase the bullet speed to at least 725 m/s, and since we have a long version, we can produce 735 m/s.
Type Hey late - increases bullet speed to 735 m/s and reduce weight to 4 kg.
The early Type Hei front sight model should also be corrected. The original had a front sight guard.
Further, all information about the automatic Type Hey is taken from the document C01007114600 on JACAR.
The Type Hei automatic has an incorrect initial bullet speed, it should be 730 m/s. This follows from the second table of the document, where the bullet’s flight speed at a distance of 25 meters from the barrel was recorded.
The weight of the Type Hey automatic without a magazine is 5.4 or 5.6 depending on the model, a 20-round magazine weighs 0.380 kg without cartridges, with cartridges 0.380 + 0.402 = 0.782. In turn, a 30-round magazine should weigh at least 0.131 kg more. That is, a 30-round magazine should weigh more than 0.913 kg, I think a weight of 1 kg sounds quite realistic. And then an automatic Type Hey with a full 30-round magazine should weigh 6.6 or 6.4 kg depending on the model.
I will also note that the shield during testing weighs 2.6 kg. Therefore, the automatic Type Hei with a shield should weigh 9.2 or 9 kg (although the shield is not secured at all and should fly off when walking).
I would also like to point out the error in the name of the pistol - saber Type A, in fact in the game it is Type B.
It is quite funny that the Type 2 bayonet for paratroopers has a mass of 0.7 kg, like the Type 30 bayonet. Which is obviously a mistake. Unfortunately, I do not know the mass of the Type 2 bayonet, but I have information about the Type 1 bayonet. The text is “小銃拳銃機関銃入門”, page 412.
The Type 1 bayonet will serve as the basis for the Type 2, their dimensions differ very little from each other. Type 1 on top, Type 2 on the bottom:
According to the table, the Type 1 bayonet weighs 440 g, the Type 2 bayonet is a little longer, I think it would be logical to give it a weight of 450-460 g, but definitely not 700 g.
The Type 100 grenade launcher rifles do not have the ability to mount a bayonet.
The Type 97 anti-tank rifle should have been given mechanics similar to the Solothurn S18-100 and given a real size.
I also compiled a table based on the books of Jiro Sayama, where I transferred the characteristics of the weapon (almost all the weight does not take into account the weight of the magazine and cartridges), but it is in Russian, on the other hand, I think that for many, the translation of Russian will be easier than Japanese.
https://1drv.ms/x/c/e243505b6304035c/EZNmxixf1OdIvUtDLd_VKt8B_ScEurcVbNydoJt8ErSJUg?e=RfMbq0
Some weapons have slightly different bullet speeds, weights, etc. I didn’t write about all of this in this thread, but you can compare them yourself.
Keep in mind that the table also contains weapons that are not in the game, in principle the table could greatly help the developers.
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