General Japanese & Thai Ground Forces Discussion HQ

And acceleration is exactly what the Jagdtiger lacks. The Ho-Ri can get around the map stupidly fast for something of its size and armor.

Snail, would you please just do it ?

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I found information about the Nickel-Chrome AP shell.

The Japanese Army, based on their experiences from the Battles of Khalkhin Gol, sought AP shells capable of penetrating the armor of future Soviet heavy tanks. This Nickel-Chrome AP shell was developed by Nippon Yakin Kogyo Co., Ltd. in May 1941. The steel used for the AP shell is named NK Steel Mk 3. Experimental results showed that this Japanese-made AP shell was superior to American and German-made AP shells. According to the experiments, the Soviet-made AP shell performed the best, but it was judged to be equivalent. Nippon Yakin Kogyo received an order from the Japanese Army for mass production of 75 mm AP shells and produced 650,000 Nickel-Chrome AP shells in 1942.

Spoiler

“Sixty-Year History of Nippon Yakin Kogyo”. Published by Nippon Yakin Kogyo Co., Ltd. 1985. pp. 56-57.

This is an armor penetration test of a nickel-chrome AP shell conducted by the Army Technical Headquarters in September 1941. This table has some useful looking data that’s been picked out and translated.

Spoiler
Gun Ammo Steel plate Penetration limit velocity Projectile status
57 mm tank gun R-1 75 mm RHA 715 m/s Explosive chamber complete x 1
Type 90 75 mm field gun R-1 75 mm RHA 530 m/s Explosive chamber complete x 2
R-1 65 mm RHA 500 m/s Explosive chamber complete x 3, Shattered x 1
R-1 75 mm FHA 650 m/s Explosive chamber complete x 2, Shattered x 1
Type 88 75 mm AA gun R-1 124 mm (Navy) 699 m/s Not penetrated, dented.
57 mm tank gun R-1 45 mm + 65 mm RHA 814 m/s 45 mm plate penetrated, 65 mm plate dented.
Type 88 75 mm AA gun R-1 45 mm + 65 mm RHA 675 m/s Penetrated
R-1 55 mm + 55 mm RHA 684 m/s Penetrated 1st plate, dented into 2nd plate.
R-1 75 mm + 35 mm RHA 675 m/s Penetrated
R-1: NK steel mk 3 nickel chrome AP shell

“Rikugi 1 Ken 4 Yōhō No. 40 (◎Hō 1) Report on Various Armor-Piercing Shells and Projectile Performance Tests” September 1941. Army Technical Headquarters 1st Research Institute

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Really surprised how it was possible to find so much valuable information.

So in fact chrome-nickel AP rounds was in 1941 already? It is similar to what we’ve seen in Type 1 47mm prototype cannon tests where 47mm and 37mm Chrome-Nickel APHE was mentioned. But isn’t there any information about late war Chrome-Nickel rounds? As for example there is the reports by US that new shells of Type 1 47mm can penetrate ~115mm of armor. Can’t it be late-war Chrome APHE?

Spoiler

image

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You’re amazing, thank you.

Now if only we can get such information into War Thunder. image

Also, @skultew1234 115 mm is insane. Sadly we don’t know what it was. Maybe the Experimental 47 mm Type 1 Tungsten APHEBC, Type 4 AP, or some solid shot shell. Or maybe some HEAT shell?

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Just found a goldmine of rare Japanese vehicles, here are some highlights that I find to be quite interesting.

Translate says it’s a conqueror with a 114mm gun, but how could this be Japanese?
conquerer114mm

Mysterious heavy tank, could it be Type 95? Or perhaps even the O-I?
mysteryheavytank

Type 61 with sideskirts and spaced armor
type61spacedarmor

We finally see the Toyota AA gun carrier up close, it is said to be the “GB” model truck
type98toyotagb

Chi-Ha Kai with 57mm gun?
chi-hakai57mm

A few unknown vehicles even more mysterious than the rest
chi-haunknown
ha-gounknown
chi-haspg

I have even more rare photos of already existing vehicles, for now I will save them for another post.

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Do you have the source/sources for the first two posts?

1
2


The conq one is British and the text is Chinese not Japanese.

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Thanks for clarification, this is what I expected but reverse image search wasn’t showing anything so figured I’d try here.


The 2nd image looks like a Type 95. The wheels don’t match the O-I and you can see the suspension rocker arm for the 3rd and 4 road wheel too.

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Looks about right. I think the camera position being closer to the ground messes up the size perception to me, makes it look a lot larger than it actually is.

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South African TAC-6, is this the super Toyota land cruiser ?


Apparently not. Toyota Super Cruiser is no longer in production

Cockpit door pressure relief valve lol
20240820204549

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It looks like the Land Cruiser that was released in 2014 for a limited time.

The Land Cruiser J70 has been in production for close to 40 years, though received a styling refresh in the 2010s.

This vehicle meanwhile is custom-made.
Other than the cabin, which uses Toyota Land Cruiser J70 parts at least externally, the chassis, transmission, and engine are non-standard. The cabin is also different from production types due to internal armor plating.

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Nice tank.

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Cargo Truck Mountain Gun (貨車山砲)

This wheeled anti-tank self-propelled gun has a Nissan 80 truck (probably 1939 model) chassis and is equipped with a 75 mm Type 94 mountain gun. There had already been attempts to mount the towed gun facing backward on the truck, but to shoot at targets in front, it was necessary to make a U-turn, which posed problems for rapid firing. To enable rapid firing when the mountain gun units encountered enemy armored units, it was developed by the IJA Taiwan Mountain Gun Regiment based on experiences from the Hainan Island Operation. The traverse is secured at approximately ±17°. It can also be used as a SPAAG, in which case it can fire at an elevation angle of up to 80°. Although it does not appear to have much depression, it can be used to fire at close range targets up to about 50 m. Anti-tank combat tactics: This new type of SPG rapidly fires at enemy tanks in front, allowing older model SPGs time to turn around.

I think this blueprint was already known on the forum, but its source was unclear. I found a detailed explanation of its development history in the August 1942 issue of the Japanese Army officers’ bulletin, “Kaikosha Report No. 815,” so I’m sharing it with you.

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