The BT-7 [b] was the last of the BT series of Soviet cavalry tanks that were produced in large numbers between 1935 and 1940. It was lightly armoured, but reasonably well-armed for the time, and had much better mobility than other contemporary tank designs.

The BT-7 (Bystrochodnij Tankov or "Fast Tank" type 7) was derived from the 1930 American-built Christie tank, which had been perfected and modified into the BT-2 and BT-5 series. These were pure cavalry tanks, designed for speed, with good armament but weak armor.

BT-7 M [5] (1938, prototypes designated A-8; sometimes referred to as BT-8): new V-2 diesel engine replacing earlier gasoline engines. A-20 (also known as BT-20): prototype for a new BT tank, with 20 mm extremely sloped armour inspired by BT-SV-2 prototype, 45 mm 20-K gun, model V-2 diesel engine.

Using the American Christie suspension, allowing high speed, the BT -7 was the final development of tanks BT (BT-1 BT-2 BT, BT-S and BT-5), having, through the experience of combat, welded armor steeper, higher speed and cannon more powerful engine.

The BT-7 was the last of the BT series of Soviet cavalry tanks that were produced in large numbers between 1935 and 1940. It was lightly armoured, but reasonably well-armed for the time, and had much better mobility than other contemporary tank designs. The BT tanks were known by the nickname Betka from the acronym, or its diminutive, Betushka.

2020年11月11日 · At any rate, this mating produced a fast and agile tank, giving birth to the definitive BT-7 model of 1935 with its new turret, new transmission, stronger armor and more powerful engine.

The BT-7 was a Soviet light tank, developed from the previous BT-5 light tank. Both designs shared the same 45 mm 20-K cannon aswell as coaxial DT machine gun. Unlike the BT-5, the BT-7s hull was welded and the shape of hull at front was also redesigned. The frontal armour protection was slightly increased from 13 to 20 mm of armour.

In accordance with the design documentation for the new tank, it was planned to install a more advanced and reliable M-17 engine, develop a welded hull with improved visibility for the...

BT-7的继承者正是大名鼎鼎的 T-34系列，后者于1940年面世，并将取代当时服役的所有苏联快速坦克、 步兵坦克 和中型坦克。 BT-7的首辆原型车拥有独特的倾斜椭圆形炮塔，主炮和同轴 机枪 都置于此炮塔上。 设计规格要求该车能够在不对火炮结构做显著修改的情况下安装以下新型火炮：76mmKT-26或PS-3主炮，一种短身管榴弹炮；以及45mm1932/38型20K火炮，一种长身管高初速火炮，能有效打击坦克，但反步兵效能低于76mm炮。 炮塔后部为一旋转滚筒式弹仓，可储 …

The Russian BT-7 Light Tank was the last of the BT series, entering Russian service in 1935. It was a light tank that was designed for dashing attacks behind enemy lines, so needed to be light and thus wasn’t well armoured. It retained the famous US inventor J. Walter Christie’s suspension and was able to run on either tracks or road wheels.