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About Waffentrager’s “Type 5 gun tank” post


Jagdika
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  This is an article simply to show you guys here how Waffentrager is a faker. The original article  ( https://www.weibo.com/ttarticle/p/show?id=2309404213101531682050) was written in Chinese and Japanese. For better understanding I will translate and edit the article and post it here. 

  And I must tell you why I want to reveal this shit: Long time ago I found many sayings from Waffentrager’s blog which I had never heard of, so I turned to my Japanese friend and IJA tank researcher Mr.Taki and asked him to confirm a few of them. In the end it turned out that none of Waffentrager’s article is true. I once argued with him and he not only failed to give out his reference but also deleted my replies! I’m very angry!

 

  Now let’s get started.

 

  At the very beginning I recommend all of you who opened this post to take a look at Waffentrager’s original article, that will help you understand what I’m debating.

 

  Here is the link to the original article: https://sensha-manual.blogspot.jp/2017/09/the-ho-ri-tank-destroyer.html?m=0  

 

  In China we need to use VPN(aka “ladder-梯子” or “the scientific way of browsing the Internet-科学上网” in Chinese)to open that link above so at first I post out Waffentrager’s original post in the form of screenshots in my article. I’ll skip that here.

 

135238iudbfcn7wbghxb4h.jpg

 

Fig.1: I will skip his original article.

 

  Now, I had raised my first question here: Please take a look at the screenshot:

 

135239q8p9y7lk7pjk47mm.jpg

 

Fig.2: My first question

 

  In the original article, Waffentrager insisted that the Type 5 gun tank was built in July, 1944 and fully assembled in August. It was also put into trials at the same time.

 

135239r335kj5qkktpqqk5.jpg

 

Fig.3: Waffentrager’s original article.

 

  But, is that true? Let’s have a look at the Japanese archive:

 

135239jmvwwwwmw031wzj0.jpg

 

Important Fig.4: Archive code C14011075200, Item 4

 

  Notice the part with the red, this is the research and develop plan for the Japanese Tech Research center in 1943, and had been edited in 1944. ◎砲100(Gun-100) is the project name for the 105mm gun used by Type 5 gun tank. The column under it says: “Research a tank gun with 105mm caliber and a muzzle velocity of 900m/s”. This means that the gun had just begun to be developed and from the bottom column we can know that it was PLANNED to be finished in 1945-3[完成豫定 means ”plan to be finished” and 昭20、3 means ”Shouwa 20-3”. Shouwa 20 is 1945 in Japan (you can wiki the way for Japanese to count years I’m not going to explain it here)]

  Next let’s move on to the Type 5 gun tank itself, here is the Japanese archive:

 

135239t9s91lx0s4uqhl1q.jpg

 

Important Fig.5: Archive code C14011075200, Item 7

 

  “新砲戦車(甲)ホリ車” is the very very first name of Type 5 gun tank, it should be translated into:”New gun tank(A), Ho-Ri vehicle”. “ホリ” is the secret name of it. Still from the column we can easily know that Ho-Ri was also planned to be finished in 1945-3. But under that column there is another one called:”摘要(Summary or outline)”, in this it says:”砲100、第一次試作完了昭和19、8”, In English it is: “Gun-100, First experimental construction(prototype construction) finished in Shouwa 19-8(1944-8)” What does it mean? It means that in 1944-8, Only the 105mm gun used by the Type 5 gun tank was finished! If the Ho-Ri tank itself was finished why it was not in the 摘要 column? So how could an unfinished tank mounted the prototype gun? Waffentrager is talking bullshit.

Also from Mr.Kunimoto’s book, he gave the complete schedule of the 105mm gun, here it is:

 

135239hwi4skwr43bfu33j.jpg

 

Important Fig.6: Kunimoto’s schedule

 

  “修正機能試験” means ”Mechanical correctional test”, it took place in 1944-8, this matches the original Japanese archive(though this chart was also made from original archives). At that time the gun had just finished, not the tank.

 

  Next is this paragraph from Waffentrager’s article:

 

135240d61uh1ga1rfvfvll.jpg

 

Fig.7: Weighing 35 tons

 

  From the archive above(important Fig.5) we can learn from the second large column”研究要項(Research items)” that Ho-Ri was only PLANNED to be 35 tons, and maximum armour thickness was PLANNED to be 120mm, not was. Waffentrager is lying, he used the PLANNED data as the BUILT data. I will post out the correct data below later to see what Ho-Ri is really like when its design was finished.

 

135240cku7x7qkkbx7gqbe.jpg

 

Fig.8: 全備重量-約三五屯(Combat weight-app.35t), 装甲(最厚部)-約一二〇粍(Armour, thickest part-app.120mm)

 

  At this time, some of the people might inquire me that:”Maybe the Type 5 gun tanks were really finished! You just don’t know!” Well, I will use the archives and books to tell these guys that they are totally wrong. None of the Type 5 gun tank was finished.

  Always let’s look at Waffentrager’s article first. He said that a total of 5 Ho-Ri were completed.

 

135240me2m2jnbznorzk8s.jpg

 

Fig.9: Waffentrager said 5 Ho-Ri were completed.

 

 He also put an original Japanese archive(C13120839500) to “enhance” his “facts”.

 

135240tq4zic904f0cm54l.jpg

 

Fig.10: Waffentrager’s archive

 

  Everyone can see the”ホリ車,1-3-1” in the document, and someone might actually believe that 5 Ho-Ri were actually built. But they are wrong! Waffentrager is cheating you with “only a part of the original document”! Here is what the original archive really looks like:

 

135240z74o8f4gpo6f9m8h.jpg

 

Important Fig.11: Archive code C13120839500, Item 7

 

  “整備計画” is “Maintenance plan” in English, again it was PLAN! The whole plan was made in 1944-12-26. I don’t actually know how Waffentrager can misunderstand this, maybe he doesn’t even know Japanese or Chinese!

 

135241j40rr6v9oiszagmh.jpg

 

Important Fig.12: The cover of the same archive, “昭和十九年十二月二十六日” is 1944-12-26” in English.

 

I have other archives to prove that Ho-Ri were not finished as well:

 

135241h84h7cntcv88z7kz.jpg

135241p8oo8bh7oh9ohlo7.jpg

 

Important Fig. 13 and 14: Mitsubishi’s tank production chart made by the American survey team after the war ends.

 

  From the chart you can only find out Type 4 and Type 5 medium tanks’ record. There is no existence of Type 5 gun tank Ho-Ri, or the”M-5 Gun Tank” in the chart’s way.

 

  Except for the archives, many books written by Japanese also mentioned that Type 5 gun tank were not finished:

 

135241ekwr8tj8kn3wxjzx.jpg

 

Fig.15: Kunimoto’s record.

 

  “二〇年五月完成予定の五両の終戦時の工程進捗度は、やっと五〇パーセントであり、完成車両出せずに終戦となった。” In English it’s: “When the war ended, the five Ho-Ri planned to be finished in 1945-5 had finally reached 50% completion. No completed vehicle were made when the war ended.”

 

  Here is another book written by Japanese with the help of former IJA tank designer, Tomio Hara:

 

135242s6ixa59qrrp6s9rm.jpg

 

Important Fig.16: Tomio Hara’s book

 

“完成をみるには至らなかった” Again he emphasized that the tank was not finished. Also when Ho-Ri’s design was finished its combat weight was raised to 40 tons, not the planned 35 tons. It was only powered by one “Modified BMW watercooled V12 gasoline engine”, rated 550hp/1500rpm. In Waffentrager’s article he said later a Kawasaki 1100hp engine were installed, but obviously that’s none sense. There was really existed a Kawasaki 1100hp engine but that is the two BMW V12 engine(Same engine on Type 5 gun tank or Type 5 medium tank) combined together for Japanese super-heavy tank O-I use. It will take much more room which Ho-Ri do not have.

 

135242uv3vbmfmkb3f1s64.jpg

 

Fig.17: O-I’s engine compartment arrangement. There’s no such room in Ho-Ri for this engine set.

 

  And last here are the other questions I asked

 

135242b3zedq3kqzl3k4yg.jpg

 

Fig.18: Other questions I asked

 

  I have already talked about the questions regarding C13120839500 and the engine. As for the gun with 1005m/s muzzle velocity, the Japanese never planned to make the 105mm gun achieve such a high velocity because they don’t have the enough tech back then. Also from the archive C14011075200(important fig.4) the 105mm gun was designed only to reach about 900m/s.

 

  So, after all these, how did Waffentrager replied? I will post out the replies from my E-mail(because he deleted my replies on his blog).

 

135243xijj4b0aztai64ij.jpg

 

Fig.19: Waffentrager’s first reply

 

He kept saying that my archive is not the same as his and he is using his own documents. I didn’t believe in these shit and I replied:

 

135243y4ge6999vg3vpgvv.jpg

 

Fig.20: My reply

 

  Last sentence, the Ho-Ri III he was talking about is fake. There are only Ho-Ri I(The one resembles the Ferdinand tank destroyer) and Ho-Ri II(The another one resembles the Jagdtiger tank destroyer). He even photoshoped a picture:

 

135244sr8x5g3vw1rryb13.jpg

 

Fig.21: Waffentrager’s fake Ho-Ri III

 

135244vca9lh7laxaehcy4.jpg

 

Fig.22: The real Ho-Ri I and the base picture of Waffentrager’s photoshoped Ho-Ri III in Tomio Hara’s book. Many same details can be seen in Waffentrager's fake Ho-Ri III

 

  The 4 variants of up-armoured Type 3 Chi-Nu medium tank is also fake, I will post his original article and the confirmed facts I got from Mr.Taki by E-mail.

 

135244gtkg3tu37uui5ycu.jpg

 

Fig.23: 4 models of up-armoured Chi-Nu by Waffentrager

 

135245gn48wcw54zwli4nw.jpg

 

Fig.24: Mr.Taki’s reply

 

  Waffentrager used every excuses he could get to refuse giving out the references, and finally he deleted my comments. What an asshole!

 

135245ifghz9v2lzpr3koj.jpg

 

Fig.25: Our last “conversation”

 

135245f89jal9zzr5dfaa3.jpg

 

Fig.26 He deleted my comment.

 

  So, as you can see, Waffentrager is really a dick. He is cheating everybody because he think that we can’t read Japanese. Anyway I still hope he could release his reference and documents to prove me wrong. After all, I’m not here to scold or argue with somebody, but to learn new things. Also if you guys have any questions about WWII(IJA) Japanese tanks, feel free to ask me, I’m happy to help.

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Link to the same debate on the WT forum:

 

Personally I'll keep the same attitude than this guy on Reddit until the issue settle down (Especially since I can't read Chinese nor Japanese):

 

[–]Jpz. E100 plsStingerRPG 62 points il y a 15 heures 

Reading the original post in Chinese(Hongkonger here), while the sources are somewhat believable, I would advise NOT to take any sides until the whole picture is clear or resolved. What stuns me is that Mai's own sources being used against him/her.

It was very obvious that the guy who wrote the post was somewhat hostile against Mai in the opening paragraph where a slang for Koreans was used, with the overall tone being hateful. But whatever.

I read the whole thing and I'll be frank, neither side is to be trusted at current situation. Best of us commoners to steer clear. I don't have a clue on who's right or wrong but it's best to leave the fighting to the folks in question.

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1 hour ago, Alzoc said:

Link to the same debate on the WT forum:

 

Personally I'll keep the same attitude than this guy on Reddit until the issue settle down (Especially since I can't read Chinese nor Japanese):

 

[–]Jpz. E100 plsStingerRPG 62 points il y a 15 heures 

Reading the original post in Chinese(Hongkonger here), while the sources are somewhat believable, I would advise NOT to take any sides until the whole picture is clear or resolved. What stuns me is that Mai's own sources being used against him/her.

It was very obvious that the guy who wrote the post was somewhat hostile against Mai in the opening paragraph where a slang for Koreans was used, with the overall tone being hateful. But whatever.

I read the whole thing and I'll be frank, neither side is to be trusted at current situation. Best of us commoners to steer clear. I don't have a clue on who's right or wrong but it's best to leave the fighting to the folks in question.

And if anyone from SH feels like dying on that sword, well, they will almost certainly have backup.

 

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In case some of the netizens on WT forum and Reddit doubt my source of reference, I will post them out here.

All the original archives I used are accessible for the public can be found in the Japan National Archive center's website here: https://www.jacar.archives.go.jp/aj/meta/reference 

And here is the two archives mentioned by both Waffentrager and me:

C14011075200: https://www.jacar.archives.go.jp/aj/meta/image_C14011075200?IS_KIND=RefSummary&IS_STYLE=default&IS_TAG_S1=d2&IS_KEY_S1=C14011075200& 

C13120839500:https://www.jacar.archives.go.jp/aj/meta/listPhoto?NO=1&DB_ID=G0000101EXTERNAL&ID=%24_ID&LANG=default&image_num=6&IS_STYLE=default&TYPE=PDF&DL_TYPE=pdf&REFCODE=C13120839400&CN=1

And books I used:

134758hxpzsgnsc9x4xf8v.png

134758c0rx2hbgptlxxsbr.png

134759zymv23ql21n3aftz.png

134759g4i4c1fmanacy4ez.png

134800lp7g9y7bggs15pe3.png

 

134759w1jjyztujbfsoh1i.png

 

Many documents and archives regarding WWII Japanese tanks have already been public viewable, there is always someone don't know.

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Well being that both hardcore WT/WoT forum posters and pretty much all of Reddit in general (not just the WT section) have a pretty big reputation of being home to some of the biggest autistic basement dwelling horsefuckers on the English speaking web, I wouldn't worry to much about being attacked here by that demographic. Also thanks for more writings.

 

Funnily enough, it was never really Waffentrager that bothered me though, It was the fact he was too connected to Daigensui/Sumeragi that always raised questions though. (if you need to ask who that is, spare yourself the mental agony of finding out.)

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43 minutes ago, EnsignExpendable said:

Back when I was posting on the WT forums I had a guy tell me that "not penetrated" actually meant "penetrated" in one of my Russian documents because his East German friend said so.

 

I remember that, Sun_Leader or something like that right?

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From now on I will not go to the WT forum or Reddit to argue with some "People with extreme political correctness and will never focus on the article itself and right or wrong". My point is , you can't trust what one has said just because "he is so right and acting gentle so even if he don't post out the original source or reference I will still believe him". That is immature. I have post out my reference, the books I've used, and I have translated the most important part to English. So what else should I do to prove I'm on the right side? I'm really angry with that. There is not that much archives and documents are still unavailable for the public, for me that is just an excuse. Even if it is not public viewable why not post out the title, or where it was stored? Which cabinet in the shelf? I can't understand some people's logic and view of correctness there in Reddit or WT forum. I know I am the right one.

Also someone from Reddit doubt why I post out this critical article 4 months later, the reason is very simple: I post it out immediately in a Chinese website similar to Reddit when Waffentrager deleted my comment and no one response. After 4 months I have acquired enough archives and documents to prove him wrong, so I post out my entire article. For those guys on Reddit: Please, use your brains to think, use your logic to analyze! If you can't read Japanese, why not try to learn it? Or why not use the translator?  Is that so hard for you? The net is so highly developed there are always some methods for you to understand Japanese and what the archives have said! Knowledge and studying change a person! We Chinese are not as stupid as some of the people think. Yes, we have restrictions, but we also have methods and ways to break restrictions.

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29 minutes ago, Jagdika said:

For those guys on Reddit: Please, use your brains to think, use your logic to analyze!

 

That's impossible, you're literally asking Reddit users to use tools they straight up don't have.

 

Just don't worry about them, you actually have an audience here (and people who read here who will spread it) that actually have to ability to think.

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21 minutes ago, Jagdika said:

From now on I will not go to the WT forum or Reddit to argue with some "People with extreme political correctness and will never focus on the article itself and right or wrong". My point is , you can't trust what one has said just because "he is so right and even if he don't post out the original source or reference I will still believe him". That is immature. I have post out my reference, the books I've used, and I have translated the most important part to English. So what else should I do to prove I'm on the right side? I'm really angry with that. I can't understand some people's logic and view of correctness there in Reddit or WT forum. I know I am the right one.

Also someone from Reddit doubt why I post out this critical article 4 months later, the reason is very simple: I post it out immediately in a Chinese website similar to Reddit when Waffentrager deleted my comment and no one response. After 4 months I have acquired enough archives and documents to prove him wrong, so I post out my entire article. For those guys on Reddit: Please, use your brains to think, use your logic to analyze! If you can't read Japanese, why not try to learn it? Or why not use the translator?  Is that so hard for you? The net is so highly developed there are always some methods for you to understand Japanese and what the archives have said! Knowledge and studying chances a person! We Chinese are not as stupid as some of the people think. Yes, we have restrictions, but we also have methods and ways to break restrictions.

I doubt the folks here belongs to the average reddit users. Thanks God!
But since it seems like there is some kind of personal cult around her and logic is no argument for these people. Sadly I lacked the popcorn while I scrolled through reddit but what happend there was really bullshittery at it`s finest.
People argued with such a zeal against points where even Mai stated totally different things than in her original articles because "she jumped to the wrong conclusions". Her fiercest proponents are totally stalker material propably manga invested (sry there might be rare exceptions) halfwitted teenagers jerking of to Mais twitter profile. :wacko: I get triggert by such people.
"But Gajin employs er so she must be totally credible!!11!!" :AHDOTCOM:

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4 minutes ago, Khand-e said:

Just don't worry about them, you actually have an audience here (and people who read here who will spread it) that actually have to ability to think.

 

3 minutes ago, Jägerlein said:

but what happend there was really bullshittery at it`s finest.

 

I really appreciate both of you for standing by my side. Reddit is really a stink hole. People there will never pay attention to the main topic and always get lost in some other shits. I never post articles or submit comments on foreign forums or sth like Reddit before. I'm getting used to these. And I will pay more attention on my selection of words from now on. Some words which is not a big problem in China might results in huge personal attacks out of China. Jesus.....

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56 minutes ago, Jagdika said:

From now on I will not go to the WT forum or Reddit to argue with some "People with extreme political correctness and will never focus on the article itself and right or wrong". My point is , you can't trust what one has said just because "he is so right and acting gentle so even if he don't post out the original source or reference I will still believe him". That is immature. I have post out my reference, the books I've used, and I have translated the most important part to English. So what else should I do to prove I'm on the right side? I'm really angry with that. There is not that much archives and documents are still unavailable for the public, for me that is just an excuse. Even if it is not public viewable why not post out the title, or where it was stored? Which cabinet in the shelf? I can't understand some people's logic and view of correctness there in Reddit or WT forum. I know I am the right one.

Also someone from Reddit doubt why I post out this critical article 4 months later, the reason is very simple: I post it out immediately in a Chinese website similar to Reddit when Waffentrager deleted my comment and no one response. After 4 months I have acquired enough archives and documents to prove him wrong, so I post out my entire article. For those guys on Reddit: Please, use your brains to think, use your logic to analyze! If you can't read Japanese, why not try to learn it? Or why not use the translator?  Is that so hard for you? The net is so highly developed there are always some methods for you to understand Japanese and what the archives have said! Knowledge and studying change a person! We Chinese are not as stupid as some of the people think. Yes, we have restrictions, but we also have methods and ways to break restrictions.

those weaboos only believe things they want to believe

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      Non-structural passive materials:
                                                                  iii.     HHA
      Steel, approximately 500 BHN through-hardened. Approximately twice as effective as RHA against KE and HEAT on a per-weight basis. Not weldable, middling shock properties. Available in thicknesses up to 25mm.
      Density- 7.8g/cm^3.
                                                                  iv.     Glass textolite
      Mass efficiency vs RHA of 2.2 vs CE, 1.64 vs KE.
      Thickness efficiency vs RHA of 0.52 vs CE, 0.39 vs KE.
      Density- 1.85 g/cm^3 (approximately ¼ of steel).
      Non-structural.
                                                                   v.     Fused silica
      Mass efficiency vs RHA of 3.5 vs CE, 1 vs KE.
      Thickness efficiency vs RHA of 1 vs CE, 0.28 vs KE.
      Density-2.2g/cm^3 (approximately 1/3.5 of steel).
      Non-structural, requires confinement (being in a metal box) to work.
                                                                  vi.     Fuel
      Mass efficiency vs RHA of 1.3 vs CE, 1 vs KE.
      Thickness efficiency vs RHA of 0.14 vs CE, 0.1 vs KE.
      Density-0.82g/cm^3.
                                                                vii.     Assorted stowage/systems
      Mass efficiency vs RHA- 1 vs CE, 0.8 vs KE.
                                                               viii.     Spaced armor
      Requires a face of at least 25mm LOS vs CE, and at least 50mm LOS vs KE.
      Reduces penetration by a factor of 1.1 vs CE or 1.05 vs KE for every 10 cm air gap.
      Spaced armor rules only apply after any standoff surplus to the requirements of a reactive cassette.
      Reactive armor materials:
                                                                  ix.     ERA-light
      A sandwich of 3mm/3mm/3mm steel-explodium-steel.
      Requires mounting brackets of approximately 10-30% cassette weight.
      Must be spaced at least 3 sandwich thicknesses away from any other armor elements to allow full functionality. 81% coverage (edge effects).
                                                                   x.     ERA-heavy
      A sandwich of 15mm steel/3mm explodium/9mm steel.
      Requires mounting brackets of approximately 10-30% cassette weight.
      Must be spaced at least 3 sandwich thicknesses away from any other armor elements to allow full functionality. 81% coverage (edge effects).
                                                                  xi.     NERA-light
      A sandwich of 6mm steel/6mm rubber/ 6mm steel.
      Requires mounting brackets of approximately 10-30% cassette weight.
      Must be spaced at least 1 sandwich thickness away from any other armor elements to allow full functionality. 95% coverage.
                                                                 xii.     NERA-heavy
      A sandwich of 30mm steel/6m rubber/18mm steel.
      Requires mounting brackets of approximately 10-30% cassette weight.
      Must be spaced at least 1 sandwich thickness away from any other armor elements to allow full functionality. 95% coverage.
      The details of how to calculate armor effectiveness will be detailed in Appendix 1.
      b.      Firepower
                                                                    i.     2A46 equivalent tech- pressure limits, semi-combustible cases, recoil mechanisms and so on are at an equivalent level to that of the USSR in the year 1960.
                                                                   ii.     Limited APFSDS (L:D 15:1)- Spindle sabots or bourelleted sabots, see for example the Soviet BM-20 100mm APFSDS.
                                                                  iii.     Limited tungsten (no more than 100g per shot)
                                                                  iv.     Californian shaped charge technology- 5 CD penetration for high-pressure resistant HEAT, 6 CD for low pressure/ precision formed HEAT.
                                                                   v.     The general issue GPMG for the People’s Auditory Forces is the PKM. The standard HMG is the DShK.
      c.       Mobility
                                                                    i.     Engines tech level:
      1.      MB 838 (830 HP)
      2.      AVDS-1790-5A (908 HP)
      3.      Kharkov 5TD (600 HP)
                                                                   ii.     Power density should be based on the above engines. Dimensions are available online, pay attention to cooling of 1 and 3 (water cooled).
                                                                  iii.     Power output broadly scales with volume, as does weight. Trying to extract more power from the same size may come at the cost of reliability (and in the case of the 5TD, it isn’t all that reliable in the first place).
                                                                  iv.     There is nothing inherently wrong with opposed piston or 2-stroke engines if done right.
      d.      Electronics
                                                                    i.     LRFs- unavailable
                                                                   ii.     Thermals-unavailable
                                                                  iii.     I^2- limited
      3.      Operational Requirements.
      The requirements are detailed in the appended spreadsheet.
      4.      Submission protocols.
      Submission protocols and methods will be established in a follow-on post, nearer to the relevant time.
       
      Appendix 1- armor calculation
      Appendix 2- operational requirements
      Addendum 1 - more armor details
      Good luck, and may Hubbard guide your way to enlightenment!
    • By Monochromelody
      IDF had kept about 100 Tiran-6/T-62s since 1973, and remain service until 1990s. 
       
      I wonder if there's any modification on Tiran-6, like changing the powerpack into 8V71T+XTG-411, adapting steering wheel. 
       
      I also heard that British ROF had produce a batch of 115mm barrel for IDF, while MECAR or NEXTER produced high-performance APFSDS for 115mm gun. Did IDF really use these barrels for original barrel replacement? 
       
      And about protection, did IDF put Blazer ERA on Tiran-6? Or they use more advanced APS like Trophy? 
       
      Thank you. 
    • By Sturgeon
      The LORD was with the men of Deseret. They took possession of the hill country, but they were unable to drive the people from the plains, because they had chariots of steel.
      —The Book of Latter Day Saints, Ch 8, vs. 3:10, circa 25th Century CE
       
      BULLETIN: ALL INDUSTRIAL-MECHANICAL CONCERNS
       
      SOLICITATION FOR ALL-TERRAIN BATTLE TANK
       
      The Provisional Government of the Lone Free State of Texas and The Great Plains issues the following solicitation for a new All-Terrain Battle Tank. The vehicle will be the main line ground combat asset of the Lone Free State Rangers, and the Texas Free State Patrol, and will replace the ageing G-12 Scout Truck, and fill the role of the cancelled G-42 Scout Truck. The All-Terrain Battle Tank (ATBT) will be required to counter the new Californian and Cascadian vehicles and weapons which our intelligence indicates are being used in the western coast of the continent. Please see the attached sheet for a full list of solicitation requirements.
       

       
      Submissions will be accepted in USC only.
       
       
      Supplementary Out of Canon Information:
       
       
      I.     Technology available:
      a.      Armor:
      The following armor materials are in full production and available for use. Use of a non-standard armor material requires permission from a judge.
      Structural materials:
                                                                    i.     RHA/CHA
      Basic steel armor, 360 BHN. The reference for all weapon penetration figures, good impact properties, fully weldable. Available in thicknesses up to 4 inches (RHA) 8 inches (CHA). 
      Density- 0.28 lb/in^3.
                                                                   ii.     Aluminum 5083
      More expensive to work with than RHA per weight, middling impact properties, low thermal limits. Excellent stiffness.
       Fully weldable. Available in thicknesses up to 4 inches.
      Mass efficiency vs RHA of 1 vs CE, 0.9 vs KE.
      Thickness efficiency vs RHA of 0.33 vs CE, 0.3 vs KE.
      Density- 0.1 lb/in^3 (approx. 1/3 of steel).
      For structural integrity, the following guidelines are recommended:
      For heavy vehicles (30-40 tons), not less than 1 in RHA/1.75 in Aluminum base structure
      For medium-light vehicles (<25 tons), not less than 0.5 in RHA/1 in Aluminum base structure
      Intermediate values for intermediate vehicles may be chosen as seen fit.
      Non-structural passive materials:
                                                                  iii.     HHA
      Steel, approximately 500 BHN through-hardened. Approximately 1.5x as effective as RHA against KE and HEAT on a per-weight basis. Not weldable, middling shock properties. Available in thicknesses up to 1 inch.
      Density- 0.28 lb/in^3
                                                                  iv.     Fuel
      Mass efficiency vs RHA of 1.3 vs CE, 1 vs KE.
      Thickness efficiency vs RHA of 0.14 vs CE, 0.1 vs KE.
      Density-0.03 lb/in^3.
                                                                v.     Assorted stowage/systems
      Mass efficiency vs RHA- 1 vs CE, 0.8 vs KE.
                                                               vi.     Spaced armor
      Requires a face of at least 1 inch LOS vs CE, and at least 0.75 caliber LOS vs fullbore AP KE.
      Reduces penetration by a factor of 1.1 vs CE or 1.05 vs KE for every 4 inchair gap.
      Spaced armor rules only apply after any standoff surplus to the requirements of a reactive cassette.
      Reactive armor materials:
                                                                  vii.     ERA
      A sandwich of 0.125in/0.125in/0.125in steel-explodium-steel.
      Requires mounting brackets of approximately 10-30% cassette weight.
      Must be spaced at least 2 sandwich thicknesses away from any other armor elements to allow full functionality. 81% coverage (edge effects).
                                                                  viii.     NERA
      A sandwich of 0.25in steel/0.25in rubber/0.25in steel.
      Requires mounting brackets of approximately 10-30% cassette weight.
      Must be spaced at least 1 sandwich thickness away from any other armor elements to allow full functionality. 95% coverage.
      The details of how to calculate armor effectiveness will be detailed in Appendix 1.
      b.      Firepower
                                                                    i.     Bofors 57mm (reference weapon) - 85,000 PSI PMax/70,000 PSI Peak Operating Pressure, high quality steel cases, recoil mechanisms and so on are at an equivalent level to that of the USA in the year 1960.
                                                                   ii.     No APFSDS currently in use, experimental weapons only - Spindle sabots or bourelleted sabots, see for example the Soviet BM-20 100mm APFSDS.
                                                                  iii.     Tungsten is available for tooling but not formable into long rod penetrators. It is available for penetrators up to 6 calibers L:D.
                                                                  iv.     Texan shaped charge technology - 4 CD penetration for high-pressure resistant HEAT, 5 CD for low pressure/ precision formed HEAT.
                                                                   v.     The subsidy-approved GPMG for the Lone Free State of Texas has the same form factor as the M240, but with switchable feed direction.. The standard HMG has the same form factor as the Kord, but with switchable feed direction.
      c.       Mobility
                                                                    i.     Engines tech level:
      1.      MB 838 (830 HP)
      2.      AVDS-1790-5A (908 HP)
      3.      Kharkov 5TD (600 HP)
      4.    Detroit Diesel 8V92 (400 HP)
      5.    Detroit Diesel 6V53 (200 HP)
                                                                   ii.     Power density should be based on the above engines. Dimensions are available online, pay attention to cooling of 1 and 3 (water cooled).
                                                                  iii.     Power output broadly scales with volume, as does weight. Trying to extract more power from the same size may come at the cost of reliability (and in the case of the 5TD, it isn’t all that reliable in the first place).
                                                                  iv.     There is nothing inherently wrong with opposed piston or 2-stroke engines if done right.
      d.      Electronics
                                                                    i.     LRFs- unavailable
                                                                   ii.     Thermals-unavailable
                                                                  iii.     I^2- Gen 2 maximum
                                                                  vi.     Texas cannot mass produce microprocessors or integrated circuits
                                                                 vii.    Really early transistors only (e.g., transistor radio)
                                                                viii.    While it is known states exist with more advanced computer technology, the import of such systems are barred by the east coast states who do not approve of their use by militaristic entities.
       
      Armor calculation appendix.
       
      SHEET 1 Armor defeat calculator 4in-54 1200 yd
       
      SHEET 2 Armor defeat calculator 4in-54 2000 yd
       
      SHEET 3 Armor defeat calculator 6in HEAT
       
      Range calculator
       
    • By Beer
      I haven't found an appropriate thread where to put some interesting rare stuff related to WW2 development, be it industrial one or makeshift field modifications. 
       
      Let's start with two things. The first one is a relatively recently found rarity from Swedish archives - a drawing of ČKD/BMM V8H-Sv tank. The drawing and a letter was found by WoT enthusiasts in Swedish archives in 2014 (the original announcement and the drawing source is here). The drawing is from a message dated 8th September 1941. One of the reasons why this drawing was not known before may be that the Czech archives were partially destroyed by floods in 2002. Anyway it is an export modification of the V-8-H tank accepted into Czechoslovak service as ST vz.39 but never produced due to the cancelation of all orders after Münich 1938 (for the same reason negotiations about licence production in Britain failed). Also later attempt to sell the tank to Romania failed due to BMM being fully busy with Wehrmacht priority orders. The negotiations with Sweden about licence production of V8H-Sv lasted till 1942, at least in May 1942 Swedish commission was present in Prague for negotiations. The tank differed compared to the base ST vz.39 in thicker armor with different front hull shape (armor 60 mm @ 30° on the hull front and also 60 mm on the turret; all sides were 40 mm thick). The tank was heavier (20 tons) and had the LT vz.38 style suspension with probably even larger wheels. The engine was still the same Praga NR V8 (240-250 Hp per source). The armament was unchanged with 47 mm Škoda A11 gun and two vz.37 HMG. The commander's cupola was of the simple small rotating type similar to those used on AH-IV-Sv tankettes. It is known that the Swedes officially asked to arm the tank with 75 mm gun, replace the engine with Volvo V12 and adding third HMG to the back of the turret. In the end the Swedes decided to prefer their own Strv/m42. 

      Source of the drawing
       
      The second is makeshift field modification found on Balkans. It appears Ustasha forces (and possibly some SS anti-partizan units) used several Italian M15/42 medium tanks with turrets from Pz.38(t). There are several photos of such hybrids but little more is known. On one photo it is possible to see Ustasha registration number U.O. 139.

      Few more photos of such hybrid.
       
      It appears that the source of all those photos to be found on the internet is this book, Armoured units of the Axis forces in southeastern Europe in WW2 by Dinko Predoevic. 
       
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