T-28 Medium Tank

The T-28 was a multi-turreted vehicle.  The vehicle was inspired by the A1E1 Independent medium tank. The T-35 was a heavy parallel design. The vehicle led to the T-29 tank and KV-1 and was replaced by the T-34.

Variants:
1.
Name: T-28
Type: Medium Tank
Origin: Soviet Union
Year: 1931 (prototype 1932)
Produced: 503 total

Length: 7.37 Meters

T-28 with 37 mm B-3

Width: 2.87 Meters
Height: 2.62 Meters
Weight: 25400 Kilograms
Speed: 42 km/h  (25 km/h off-road)

Crew: 6

Primary Armament:
-37 mm B-3 OR
-37 mm PS-2 OR
-45 mm 20K OR
-76 mm RT-28 OR
-76 mm PS-3
Secondary Armament:

-7.62 mm DT (4)

Gun Flexibility:
For DT:
30° Elevation
20° Depression
30° Left
30° Right

Armor:
-Hull
30 mm Front
10 mm Side
20 mm Rear
10 mm Top
18 mm Bottom
-Turret
20 mm Front (20 mm Gun Shield)
20 mm Side
20 mm Rear
15 mm Top

2.
Name: T-28A
Type: Medium Tank
Origin: Soviet Union

T-28 with 76 mm PS-3

Year: 1935
Produced: 503 total

Length: 7.37 Meters
Width: 2.87 Meters
Height: 2.62 Meters
Weight: 25400 Kilograms
Speed: 68 km/h  (25 km/h off-road?)

Crew: 6

Primary Armament:
-76 mm RT-28
Secondary Armament:
-7.62 mm DT (4)

Gun Flexibility:
For DT:
30° Elevation
20° Depression
30° Left
30° Right

Armor:
-Hull
30 mm Front
10 mm Side
20 mm Rear
10 mm Top
18 mm Bottom
-Turret
20 mm Front (20 mm Gun Shield)
20 mm Side
20 mm Rear
15 mm Top

3.
Name: T-28B
Type: Medium Tank
Origin: Soviet Union
Year: 1938
Produced: 503 total

Length: 7.37 Meters
Width: 2.87 Meters
Height: 2.62 Meters
Weight: 25400 Kilograms
Speed: 68 km/h  (25 km/h off-road?)

Crew: 6

Primary Armament:
-76 mm L-10
Secondary Armament:
-7.62 mm DT (4)

Gun Flexibility:
For DT:
30° Elevation
20° Depression
30° Left
30° Right

Armor:
-Hull
30 mm Front
10 mm Side
20 mm Rear
10 mm Top
18 mm Bottom
-Turret
20 mm Front (20 mm Gun Shield)
20 mm Side
20 mm Rear
15 mm Top

4.

85 mm F-30

Name: T-28E/T-28C/T-28M
Type: Medium Tank
Origin: Soviet Union
Year: 1938
Produced: 503 total

Length: 7.37 Meters
Width: 2.87 Meters
Height: 2.62 Meters
Weight: 32000 Kilograms
Speed: 23 km/h

Crew: 6

Primary Armament:

76 mm F-32

-76 mm L-10 OR
-76 mm F-32
-85 mm F-30 OR
-95 mm F-39
Secondary Armament:
-7.62 mm DT (4)

Gun Flexibility:
For DT:
30° Elevation
20° Depression
30° Left

76 mm F-32

30° Right

Armor (50 mm applied to normal):
-Hull
80 mm Front
40 mm Side
20 mm Rear
10 mm Top
18 mm Bottom
-Turret (up-armored but no source says how much
20 mm Front (20 mm Gun Shield)
20 mm Side
20 mm Rear
15 mm Top

Sources:
http://www.aviarmor.net/tww2/tanks/ussr/t-28.htm
http://www.tanks-encyclopedia.com/ww2/soviet/soviet_T28.php
http://www.militaryfactory.com/armor/detail-page-2.asp?armor_id=345
http://ftr-wot.blogspot.com/2013/04/buff-my-tank-t-28.html