As you may know, I offer several Soviet heavy tanks in my Shapeways shop. As of this writing, I have the entire KV series available, except for the KV-85 and the post KV-7 models based on the KV-1S. However, my hand remains steady only when shooting a rifle, not when trying to paint 6mm scale models. Therefore, I didn’t have pictures of them painted until now, when my most frequent customer provided a picture of everything he bought from me, and then some.
All but Object 263 and the S-51 (both Soviet self-propelled guns) are available in the “historical tanks 1/285” section of my shop. [I keep retroactively editing that link, mainly because I keep splitting up the tanks into different sections as I add more of them; it makes them easier to find] If you want to know more about each of these without visiting the product pages, keep reading.
All eight are experimental and/or cancelled projects.
KV-220: an experimental step up from the KV-1, superior in every way, with a longer chassis and 85mm cannon. A single prototype was constructed in 1941, then lost in December of the same year after a direct hit from a 150mm howitzer.
KV-4: about 20 different designs were proposed for this tank, though my original customer (not the one who took this picture) wanted the version from the game “World of Tanks.” The game designers based their model very closely on project Strukov. However, the KV-4 was to be produced at the Kirov plant in Leningrad, and all experimental projects were cancelled when the city was attacked.
KV-3: three projects, objects 221, 222, and 223, were proposed for the KV-3. The design was meant to be a step up in every way from the KV-1, rather like the KV-220. Object 223 was the most heavily-armed and armoured version, and thus chosen. It had a 107mm cannon and a maximum armour thickness of 120mm. However, the prototype was destroyed before production could begin and the project promptly cancelled.
T-150: the new diamond-shaped turret of the KV-220 on a standard KV-1 chassis, and also with a more powerful engine. The only one ever built was destroyed while defending Leningrad. Are you noticing a pattern yet?
KV-7: two 45mm cannons and one 76.2mm cannon were nestled into a casemate. This design was not very effective, and after one prototype was built in 1941, the project was revised into the KV-7-2, which carried a 152.4mm howitzer in place of the three smaller guns, thus leading directly to the SU-152, which did enter production.
S-51: model by Kampfflieger. A step up from the SU-152 (!), this vehicle was armed with a 203mm howitzer, which brought the vehicle’s weight up to 66 tonnes, though none of that weight could be attributed to the roof, which had to be removed in order for the gun to be loaded. This one was built considerably later than the others, tested in 1944, and cancelled within a year, as it was not very successful.
KV-5: yet another experimental project out of the Kirov plant, cancelled when Leningrad was attacked. Only one design, object 225, was proposed. Like object 223, this one had a 107mm cannon, but could carry a lot more ammunition, naturally. Two machine gun turrets could also defend the tank from infantry armed with anti-tank weapons. The weight was projected to be 100 tonnes, making this a super-heavy tank, and the heaviest ever built by the Soviets… except no prototype was ever built.
Object 263: model by oyvindsofienlund. This one is quite out of place, as it was built in 1951 on an IS-7 chassis and armed with a 130mm cannon. Naturally, since the IS-7 (object 260) also had a 130mm cannon, this thing seemed pointless. About the only thing it had going for it was that it was 8 tonnes lighter than the IS-7. Stalin didn’t like it, and Khrushchëv had no interest in continuing to produce heavy tanks, so the project was cancelled, along with everything else over 37 tonnes.