Military Review

BT-IS: too good to use

“Do you feel so slim, Winston? The idea, of course, belongs to Big Brother, - he added, having recollected himself.
J. Orwell "1984"

Each person who is "fond of armor" has his own "favorite tank", or an armored car, which they admire long and hard. Someone like that, but for me such a BA, I emphasize, it’s BA, not a tankwas a 30s Swedish armored car Pbil fm / 29. And I really wanted to establish its production in the form of a combined model. Again, because its entire body could be very easily cast from epoxy in the form of a single solid blank! The fact is that his wheels were covered with armor, so that the wheels themselves were not needed for him, and only the “quarters” visible from above, as well as a small tower and detailing made of “white metal”. Such a model in the West and in Sweden would cost $ 40, no less, but I didn’t have any drawings for it. And then I took it straight and wrote to the Swedish Ministry of Defense, to the public relations department, and to me ... everything that I asked from there was sent. It was in 1995, and, of course, I was very grateful to the Swedes for the projections and materials sent. But then I remembered that if they had a BA with closed wheels, then we had a tank similar to it!

BT-IS: too good to use

Tank BT-SV-2.

He began to search and that's how he came out on the Tsyganov BT-IS tank, about which the story will go here today. Along with the TG and the “Dyrenkov tank”, he was one of our experimental machines, which in many respects determined the high level of the Soviet serial tank construction, although he still did not get into mass production.

Here it is - "handsome" Pbil fm / 29, the price in 50000 of Swedish crowns, which seemed to the Swedes at that time an overwhelming amount. Well, his patency was limited due to the armor hanging over the wheels, so he was not taken to mass production.

And it was so that when W. Christie’s tanks, as they say, “went” (which was described even in the 1935 comedy of the year “Hot Days”), their tactical and technical characteristics turned out to be much lower than expected. In the same film “Hot Days”, the bulk of the tanks are T-26, and the BT-2 is only one there and it constantly breaks down. Meanwhile, A. Dovzhenko at the All-Union Creative Conference of Soviet Cinematography Workers in January 1935 of the year stated: “I will not reveal any military secrets here if I say that in a few years we can have a war ... There will be a huge world war, participants in which we will must be. ... First of all, we need advance preparation ... ”Well, he called for, of course, making the appropriate movie. But it was impossible to participate in the "great world war" on ... bad tanks ?! The heroes of the film, in passing, put some kind of “plate” there and the engine stopped breaking, and many people after watching this “movie” also thought about the problem, and “how best to make a BT tank?”

BT-IS. Foldable shelves for storing removed caterpillars are clearly visible.

Probably, similar problems with this machine plagued the young tanker 4-th tank regiment from the Ukrainian Military District Nikolai Tsyganov. True, he did not have a special technical education, but this did not prevent him in the 1934 year to design an automatic coupling for the T-26, T-27 and BT tanks. The People's Commissar of Defense K. Voroshilov awarded him with a gold watch for this, and in addition he was promoted - he was promoted from junior commander to platoon commander.

BT-IS is one of the prototypes.

And then K. Voroshilov for some reason made a speech to the tank crews of the 4 tank regiment, and said that he needed to “create a new wheeled-tracked propulsion unit for the BT tank” in order to become an even more powerful fighting vehicle. Well, at least he would say all this to the engineers at some factory. But no, he said in an ordinary tank regiment. And the commander of the UVO troops present here, I. Yakir, immediately ordered the task done by the people's commissar N. Tsyganov and those whom he would take in his group. That is, behind him recognized the talent of the inventor and "gave the green light." We strengthened the group with engineering personnel, and the work began, and for four months people worked on 16 – 18 hours a day. By April 1935 of the year, both the drawings and the model of the tank in the full-size 1 / 5 were available, on which the new propulsion unit stood, which had three pairs of driving wheels and one controlled one.

This is how the transmission of a new tank looked “live”.

But who exactly came up with the idea of ​​creating such a tank, you can’t say today. For some reason, Tsyganov himself sincerely believed that this idea belonged to Stalin, and that it was his idea that Tsyganov and his comrades were told by their “beloved Bolshevik commander,” Comrade Yakir. And he and his comrades so directly wrote to Stalin and Voroshilov: you, Comrade Stalin, put forward the idea, Comrade Yakir explained it to us, and we did it in the shortest possible time, fulfilling our party duty, here. And we decided to give the name of the tank BT-IS (IS-Joseph Stalin). Correct were the guys, what to say. They correctly understood the policy of the party, the time and the current moment. Everything is exactly as described by George Orwell, but he was not talking about a tank.

A team of enthusiasts working on their brainchild. They still do not know that very soon they will have to give explanations for why they made the “wrecking tank”, or maybe they were asked about why they knew about the wrecking works of Firsov and his colleagues, and did not report back?

In response, Voroshilov for the construction of BT-IS ordered to allocate the necessary funds and the workplace at the tank repair plant No. XXUMX in Kharkov. Cases there, however, did not go smoothly, so Tsyganov even complained about local engineers to the Central Committee. But, despite all the difficulties, in June 48, the new tank was ready, and its tests began, about which reports were given to Voroshilov personally. He demanded that in the year 1935 tanks BT-IC on the basis of the tank BT-1936 was already made 5 pieces. In June-March 10, the tanks were sent to the mileage Kharkov - Moscow, after which a number of improvements were made to the design of the car.

Scheme of the onboard transmission of the tank BT-IS.

The new tank was still the same BT-5, but differed from the prototype in that it had three pairs of leading rollers for driving on wheels. A special synchronizer was also provided, which equalized the speed on the wheeled and on the crawler, which gave the tank the opportunity to continue its movement in the event of the loss of one of the caterpillars. But the most important, of course, was the presence of six driving wheels, which made it possible to use more than 75% of the mass of the car as a coupling weight, which on the wheel track should have increased its cross-country ability.

On the BT-5 a gear was used from the drive wheels of the crawler to the rear rollers on the wheels. Now all three pairs of rollers rotated from two horizontal and six vertical propeller shafts mounted above the wheels in the upper part of the body. However, the Christie-type candlestick was also kept on the tank, although the designers themselves put the candles with springs on the tank in a different way. However, nothing good appears just like that: in addition to the synchronizer, the tank also had to install corner junction boxes, upper gearboxes, numerous cardan shafts, a synchronizer changeover drive, and install a new fuel tank aft. It also took a place to store the tracks taken from the wheels. For them, they found a place on the folding side shelves, which were pressed against the sides of the tank when driving on tracks.

Back view.

Test to overcome natural obstacles.

During the tests, the BT-IS tanks were made on wheels from 1500 to 2500 km. At the same time, their propeller, despite the much greater complexity than the BT-5, showed both improved throughput and high survivability. Tanks could move and, having lost one caterpillar, and even having lost one or two road wheels. Although tanks had drawbacks, the Red Army Commission considered that the tank should be adopted as having clear advantages over its predecessor.

Tank BT-SV-2 in the snow.

In 1937, we decided to prepare a series of already five BT-IS machines. They planned to decide the sloping armor on the board with a thickness of 6 mm in order to ensure the protection of the onboard gears and also to eliminate the deficiencies that appeared during the tests. Well, and in a year to make 300 tanks of this type.

Four projections of the BT-SV-2 tank. Fig. And Shepsa.

Meanwhile, Tsyganov, as is often the case with inventors, considered that everything was already decided with the BT-IS tank, and started a new vehicle based on the BT-7 with improved armor protection. We finished the tank at the end of 1937 of the year and named it in the best traditions of the time: BT-SV-2 “Turtle” (SV - “Stalin-Voroshilov”). The main highlight of the design was the placement of body armor plates with very large tilt angles: from 15 to 58 °. The nose was the same width as the tank body, so the front tube for the guide wheels on this tank was removed. The suspension of the road wheels did not fundamentally change.

BT-CB-2 - side view.

The main thing is that the BT-SV-2 case practically had no protruding parts at all, except for the caps of the springs on the candles of the vertical suspension, which remained standing upright. In this case, the armor plates were removable and attached to the body on the bolts. For greater rigidity, internal fastenings were provided, which divided the reservation space into sections. The gas tank, which was on the BT-7 in the stern, was removed, so that it also became inclined, and the tanks were installed along the sides.

Blue with T-20.

The turret of the tank acquired a conical shape without a stern niche, because of which the radio station was placed in the forward part of the hull, where, apart from the driver, they put the radio operator, who became the fourth crew member.

The experienced BT-SV-2 was made of ordinary steel 10 – 12 mm thick, but the real combat vehicle was planned in two versions at once. The first one with the FD brand armor and 40 – 55 mm thickness, which would have to protect the tank from 45-mm projectiles fired at it from any distance; the second option was calculated on thinner 20 – 25 mm IZ armor, which protected the tank only from 12,7-mm bullets, but from any distance.

The tests of the BT-SV-2 took place in the winter of 1937 - in the spring of 1938 of the year, and during this period the tank drove 2068 km. It was noted that if the weight of the BT-SV-2 will be 24 – 25 t, then its running gear will be too weak for it. It was planned to build a tank with full booking and fire it from the gun. But then, is it for goodness to harm (it’s impossible to say today) at the beginning of 1938, N. Tsyganov and his two employees arrested the NKVD. Fortunately, he was not shot, but his nerves were shaken fairly, and most importantly, they were no longer allowed to invent tanks. Moreover, in March, 1937 was also arrested by a large group of engineers from KhPZ, and, in particular, A. Firsov, the head of the tank design bureau, instead of whom M. Koshkin, the future creator of the T-34 tank, was appointed. N. Tsyganov himself later fought and died from his wounds in the spring of 1945, a little before Victory, but it’s already good that, at least, he did not die in the camp.

Moreover, the question of bringing BT-IS to mind from the agenda after Tsyganov’s arrest was not cleared, that's how it was, and the Red Army’s Main Armored Directorate of the Red Army in October 1937 of the year issued an order to the KhPZ for the BT-20 tank (by the new designation A-20), which in the metal passed in 1939 year. And on it, the wheel drive was also on all six wheels, as was the case with the BT-IS tank, while the upper armor plate had a slope of 53 °.

Interestingly, the model BT-SV-2 today comes in the form of a set for gluing paper.

Now let's look at the minuses and advantages of these developments - BT-IS and BT-SV-2 tanks in relation to their development by industry and troops. With the same weapons as the base tank, the BT-IS had a slightly higher speed, a much higher off-road permeability, but ... constructively it was very complicated. All this abundance of shafts, couplings and helical gears significantly and expensive, and complicated the design of the tank, as well as complicate its maintenance. And for what? To better tank went through the plowed field and in the snow? All this could be achieved by putting the tank on wider tracks! That is, in fact, this construction of benefits promised little. But the nodes that in it could break compared with the BT-5 and BT-7, it was much more and it was possible to fear that ... they will break down, since the technological level of the Soviet industry was then very low.

The team of creators of BT-IS. N. Tsyganov is on the left.

Even more interesting is the BT-SV-2 - handsome tank, something extraordinary for its time. But ... with the same weaponry as on the BT-7, and the worst maneuverability due to its narrow tracks! That is, it would be necessary to put wider tracks on it, make the upper armor plate wider under the wider shoulder strap of the tower, put a larger tower with a larger caliber gun, the fifth wheel, and in the end we would get the same T-34, only in the version with shielded chassis. That is, no, we were not at all inert then by military experts, but also not visionaries, who, pulling up their pants, were ready to wade straight across the sea. They soberly assessed the level of our industry at that time, and the capabilities of the army to service sophisticated equipment, but at the same time they did not shy away from innovation - “why not an interesting offer and not to try?” That is, they were aware that BT-SV- 2 is good now, this minute, maybe even too good. But at the wave of a magic wand, thousands of such tanks would not appear at once, which is why they refused as a result, just like BT-IS! Smart people were right and then did!

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  1. jjj
    jjj 14 October 2016 15: 39
    We remove the tracks, put the wheels. We provide a compartment for the landing. BTR is obtained.
    It was interesting to read
    1. Alexey RA
      Alexey RA 14 October 2016 19: 43
      Quote: jjj
      We remove the tracks, put the wheels. We provide a compartment for the landing. BTR is obtained.

      Does not work.
      Because the "useful" width of the BT-SV hull is limited by the distance between the suspension plugs on the left and right sides (that is, it differs little from the BT). Above the wheels and on the sides, you will not lay down the troops. smile
      And in the hull itself for the landing, only the fighting compartment remains, which cannot be expanded (see above), and cannot be lengthened either - because the engine is along the hull and cannot be deployed - the "useful width" will not give.
  2. potapych
    potapych 14 October 2016 16: 14
    interesting article . read with interest
  3. Hapfri
    Hapfri 14 October 2016 16: 40
    The fact that the caterpillars are narrow is not scary, it's a light tank.
    But the tower is small.
    1. avt
      avt 14 October 2016 17: 33
      Quote: Hupfri
      The fact that the caterpillars are narrow is not scary, it's a light tank.

      laughing Tell the Germans. Especially after the first fall in Russia in 1941. They will be surprised.
      That is, they were aware that the BT-SV-2 is good now, right now, maybe even too good. But by a wave of a magic wand, thousands of such tanks will not appear at once, which is why they finally refused it, as well as BT-IS! There were smart people and they did the right thing then!
      Delirium! Especially in relation to the turtle "
      Quote: Kotischa
      Objectively, Tsiganov’s tanks in the USSR received oblique armor reservation and subsequently determined the silhouette of our vehicles for many decades.

      Objectively, as Ginsburg wrote to Bokis on 01 01 1937, this is a trivial model that will do nothing except measure the mass. You can also look at yourself inclined armor plates, which is much cheaper. And here the design is difficult to manufacture. Moreover, EVERYTHING that Ginsburg predicted for this pepelats, this pepelats was confirmed by testing the landfills. The result - the money thrown away and the time spent on this miracle. So Tsyganov was removed correctly. Of course it wasn’t necessary to flatten, tough. BUT the times were abrupt and he really got off average. The same Sjachintov got into a fierce batch.
      1. Cat
        Cat 14 October 2016 19: 13
        But on tanks in the USSR, inclined armored plates appeared in large numbers at Tsyganov. Let them be from ordinary boiler iron, but the beginning was laid. The following Kharkov models A20, A32 and T34 were booked according to the indicated principle. For example, the British came to this only in 1943, when they designed Centurion. As for the innovations, the Turtle had a hatch for the driver and the machine gunner on the top sheet of the hull, which was a step forward, which was repeated on T34. It was a mistake to install armor on the bolts, closing the chassis did not give a particular advantage, but in general it was a jolt that gave us our famous T34.
        1. avt
          avt 14 October 2016 19: 51
          Quote: Kotischa
          But on tanks in the USSR, inclined armored plates appeared in large numbers at Tsyganov. Let them be from ordinary boiler iron, but the beginning was laid. The following Kharkov models A20, A32 and T34 were booked according to the indicated principle.

          laughing Study, study and study again. ,, I ask you to reconsider this decision, as it will only lead to a pointless waste of money ..... The expected characteristics of the specified type of tank can be obtained by calculations WITHOUT MANUFACTURING IT ....... Ginzburg ".
        2. svp67
          svp67 15 October 2016 00: 57
          Quote: Kotischa
          For example, the British came to this only in 1943

          And the French in the mid-30s created R-35, H-35, FCM 36
          Quote: Kotischa
          The mistake was to install the armor on the bolts,

          And what then could massively weld armored steel?
          Quote: Kotischa
          closing the chassis did not give much advantage

          It’s hard to judge, would it be nice to know where his fuel tanks were located?
          1. The comment was deleted.
            1. svp67
              svp67 15 February 2017 07: 44
              Quote: lubesky
              So he and FCM 36 copied. He was not an innovator.

              Proof of....
              1. lubesky
                lubesky 15 February 2017 10: 39
                Quote: svp67
                Proof of....

                Read the Ginsburg seeds letter, google to help you. Ahh, although you are a Wikipedist ... It will be difficult for you to find this letter there))
                1. svp67
                  svp67 16 February 2017 13: 42
                  Quote: lubesky
                  Ginsburg seeds read the letter,

                  If he wrote it to you, then somehow for my part it will not be correct to publish it. So we are waiting for evidence, not a simple "pouting", like, "I have these devices, but I will not show them to you." So, "blow off the cheeks" and evidence IN STUDIO.
                  Quote: lubesky
                  Google to help you. Ahh, although you are a Wikipedist ... It will be difficult for you to find this letter there))

                  Of course, especially when the opponent has children's thinking. Adults, when they refer to a document, call the source data, such as the date of the letter, the possible number to whom it was written. You really have a CHILD consciousness.
                  And if we take the history of the issue at all, about strengthening the reservation by giving the armor plates optimal angles and shapes, then it’s probably worth recalling the Russian armored trains “Khunkhuz” and “Orlik”

                2. svp67
                  svp67 16 February 2017 19: 04
                  Quote: lubesky
                  Read the Ginsburg seeds letter, google to help you. Ahh, although you are a Wikipedist ... It will be difficult for you to find this letter there))

                  "The head of the design bureau of plant No. 185 named after S.M. Kirov S. Ginzburg prepared for the head of ABTU a certificate" on the progress of tank construction abroad, "which, in particular, said:

                  "At present, the best foreign tanks in all respects, except for the caliber of weapons, overtake domestic models, which are the development of designs developed six to seven years ago ...

                  If at that time these were undoubtedly advanced models of military equipment, today our tanks are becoming obsolete, while tank builders from other countries are boldly introducing the new into serial production.

                  Of greatest interest to the domestic tank building are the Skoda-2 tanks, which have an extremely smooth running and simple construction, the French Forge and Chantier model 1936, as having a hull of thick armor plates connected by welding, as well as Renault tanks . 1935 ", widely using armor casting of large thickness ...

                  I believe that we should, without delay, launch pilot work on creating tank shells with wall thicknesses of at least 40 mm, and also develop a new type of suspension for small tanks of large mass ... "

                  So which tank did anyone copy that? If we also take into account that at that time Koshkin was subordinate to Ginzburg and successfully worked on the T-111, or as it is also called T-46-5

                  And where is the reservation applied at optimal angles for rebounding?
                  By the way, the French tank is marked as the most heavy-armored, that's what they want to borrow from them ...

                  So that you look like "look into the book, but see the fig" ...
      2. Andrey Zh
        Andrey Zh 14 October 2016 19: 28
        Guys, what are you, he didn’t get off on average - he got out excellently! Well done!!! And managed to fight, and so the forest would have felled in Siberian camps until the mid-50s! ...
    2. AUL
      AUL 14 October 2016 17: 44
      Few people know about the designer Tsiganov, but his merits are beyond doubt. Very useful and interesting article, thanks!
  4. Cat
    Cat 14 October 2016 16: 51
    Vyacheslav, thanks for the article.
    Once again pleased.
    Objectively, Tsiganov’s tanks in the USSR received oblique armor reservation and subsequently determined the silhouette of our vehicles for many decades.
  5. igordok
    igordok 14 October 2016 16: 55
    Seeing the BT-SV for the first time, not knowing about it, he assumed that it was a floating tank. The protruding armor plates were mistaken for floats. And such slopes for better "seaworthiness". smile
    1. kalibr
      14 October 2016 21: 07
      The floating ones were the PT-1 and PT-2 - also very unusual and interesting tanks. But there is very little material on them ...
  6. Damir
    Damir 14 October 2016 18: 45
    "The collective of BT-IS creators. N. Tsyganov is on the far left". Dear author! in the foreground or behind the shoulder of a friend in the foreground ???? and thanks for a very interesting article ...
    1. kalibr
      14 October 2016 19: 27
      In sight of himself, in the front row, of course.
  7. Alexey RA
    Alexey RA 14 October 2016 18: 58
    It is strange that the article does not have a wonderful quote from Tsyganov’s letter to the Central Committee of the All-Union Communist Party of Bolsheviks of October 26, 1937 stating that the release of BT-IS is being hindered cohort of pests:
    "... the pest Firsov, the former head of the design bureau at the KhPZ plant, where it was transferred by the pest Neiman, the former head of the Spetsmashtrest; at the plant No. 48 (Kharkov), where the fascist pest Simsky was the technical director, who dragged the fascist Gakkel to the plant No. 48 and put him in charge of the production of BT-IS ".

    There are no innocent victims. ©
    1. kalibr
      14 October 2016 19: 28
      I didn't write about it. A man of his time. I wrote that he "felt the era." And the quote from Orwell is therefore the same. And this letter ... it really is ... so ...
      1. moskowit
        moskowit 14 October 2016 20: 26
        Do not need. God forbid, it would occur to someone to make denunciations ... And not just denunciations of ordinary citizens due to improved living conditions, but denunciations of people who are now included in all kinds of encyclopedic lists and articles ....
        1. kalibr
          14 October 2016 21: 05
          You know, I read some denunciations. On the party line, really. Oh, such dirt. Wife to her husband (a famous scientist) - stroking students by the hand, immorality complete, the party committee must take action ... And all that sort of thing. People, alas, are very narrow-minded and nasty creatures.
      2. your1970
        your1970 14 October 2016 20: 41
        But how should comrades from the authorities react after reading this? Do not react, accuse them of complicity, you never know - here they worked - shockly planting enemies ...
        1. kalibr
          14 October 2016 21: 01
          One comrade here in Penza in the 37th accused of sabotage the people on the collective farm "who killed aphids on 5 hectares of peas" and this was published in the newspaper Trudovaya Penza. I asked later: "is this sabotage, to destroy aphids?" No, it’s not like ... but they didn’t tell me exactly. And as articles like "Wrecking sowing", "wrecking plowing" - were not counted!
          1. Cat
            Cat 14 October 2016 21: 17
            If I am not mistaken Vyacheslav it is you who led the definition of "wide creativity of the masses". In my opinion, Tsyganov is precisely one of those "masses" who, due to personal initiative, sometimes even "naivety and faith" have moved forward. His team and he himself, in my opinion, was not looking for a conjuncture, but sincerely and naively believed in Comrade Yakir, Comrade Stalin and others. When faith began to crumble, it cut him down, he may have broken from where denunciations and complaints about everyone and everything went. Perhaps you are right he is a man of his time, but the presence of sparks in his talent is obvious.
            Perhaps if not this, we could get our Christie.
            And the mischief, how beautifully Kotin picked it up, pure plagiarism - KV, IP. But one must be fair, he is not alone, at least for example, QMS.
            1. Kostya Andreev
              Kostya Andreev 15 October 2016 08: 07
              Quote: Kotischa
              hell, how beautiful Kotin grabbed him, pure plagiarism - KV, IS. But one must be fair, he is not alone, at least for example, QMS.

              Forgot to add Churchill
              1. Cat
                Cat 15 October 2016 21: 26
                U. Churchill himself spoke about the tank called by his name, that he (the tank) has more shortcomings than himself.
      3. avt
        avt 15 October 2016 09: 50
        Quote: Alexey RA
        It is strange that the article does not have a wonderful quote from a letter from Tsyganov to the Central Committee of the All-Union Communist Party of Bolsheviks dated October 26, 1937 that the release of BT-IS is prevented by a cohort of pests:

        Quote: kalibr
        I did not write about it. A man of his time.

        Prefer to plant a panegyric of unrecognized talent?
        That is, they were aware that the BT-SV-2 is good now, right now, maybe even too good. But by a wave of a magic wand, thousands of such tanks will not appear at once, which is why they finally refused it, as well as BT-IS! There were smart people and they did the right thing then!
        wassat Times, of course, and manners were tough ... even cruel, but how people behaved and who really cost what in this situation, one could give their own opinion to make up in comparison of Ginzburg's letter about a specific sample to Bokis and frank denunciation, but just a demand reprisals under Article 58 of Tsyganov. Again, what is surprising in the light of ....... ,, Stalin's hopeless tyranny "- sorted it out and gave it back .... but already to Tsyganov himself for his real deeds in metal. departure from the factory.
  8. masiya
    masiya 14 October 2016 19: 23
    Original designs are now not relevant, but at one time very much nothing ...
  9. tinibar
    tinibar 14 October 2016 21: 23
    Each person who is "fond of armor" has his own "favorite tank", or an armored car, which they admire long and hard.
    And I have one. There he is:
    1. Alf
      Alf 14 October 2016 22: 55
      And this is my favorite tank.
  10. wanderer_032
    wanderer_032 15 October 2016 01: 01
    It is noteworthy that in BT-SV-2, which was engaged in the personnel tanker, the features of the future T-34 tank are clearly guessed. The same inclined armor and the same conical tower, increasing ballistic resistance. A-20 and A-32 - appeared much later.
  11. wanderer_032
    wanderer_032 15 October 2016 01: 12
    Side screens covering the undercarriage are also a good idea. Which was further developed in the future. As well as such a transmission scheme, which was further developed in the special automotive technology of the Bryansk Automobile Plant.

  12. Peacemaker
    Peacemaker 15 October 2016 04: 05
    Interesting car. I read it with pleasure.
  13. steady
    steady 15 October 2016 12: 44
    I see in the comments a lot of people ascribing to Tsyganov the greatest innovations and considering him almost the forerunner of the T-34.

    On January 11, 1938, S. Ginzburg sent a letter in the name of the head of the ABTU of the Red Army G. Bokis, in which he said:
    “At present, we have completed the development of a streamlined armored hull of improved wedge-shaped security, but the mock-up commission for the T-46 tank rejected our offer to test this hull for its comprehensive tests ...
    As I wrote to you earlier, this case is very difficult to manufacture, especially in mass production. The reserved space has a complex shape and is inconvenient for a tight layout ...
    Nevertheless, the Tsyganov group is already reworking the BT tank into a model of the French tank of the indicated type, which will do nothing but measure the mass, since the hull is made of unarmored steel.
    I ask you to reconsider this decision, as it will only lead to a waste of money.
    The expected characteristics of this type of tank can be obtained by calculations, without its manufacture. "

    Simply put, Tsyganov worked on the order of ABTU. The order was received after the report of the same Ginzburg about foreign heavy-armored tanks. Those. Tsyganov had a specific task: to make BT-7 a semblance of FCM-36. IMHO: Tsyganov just had to sit down and figure out what would happen, and not spend the people's money. Really, the guy got off very easily.
  14. kalibr
    16 October 2016 10: 44
    Quote: Kotischa
    When faith began to crumble, it ruined him; he probably broke from where and denunciations and complaints about everyone and everything went. Perhaps you are right, he is a man of his time, but in the presence of sparks in his talent, this is obvious.

    It may very well be ... Many have sparks of talent. But ignorance, laziness, everyday life interfere ... Many things interfere.
  15. DimanC
    DimanC 21 October 2016 15: 26
    Interestingly, any of the detractors of the wheeled propulsion unit are aware that this is why wheeled-tracked vehicles were made because the trucks could not go even 500 km?
  16. captain
    captain 26 January 2017 19: 47
    Thanks for the interesting article. I learned a lot. How many talented people have been in Russia.
  17. Petrik66
    Petrik66 31 July 2017 13: 48
    I don’t understand much in tank building, but I remember the memories of Soviet tankmen (Drabkin) who fought on the English Matilda near Moscow in 1941 - 42. Everyone noted the disgusting feature of the car - the dirt clogged between the bulwark and the tracks, it froze and all ...... kirdyk . The similarity of a possible problem suggests itself.