History of 10.5cm K armored self-propelled gun IVa (Dick Max)
The 10.5cm K armored self-propelled gun is a tank destroyer developed by the German army during World War II, originally developed to meet the needs of self-propelled guns. Before the German invasion of France, it had been thought that part of the German success was to break through the fortifications of the French Maginot Line. The Maginot Line is a network of concrete bunkers, artillery houses, machine gun nests and vehicular traps with steel barriers that run along France's borders with Germany and Italy (this section is known as the "Alpine Line" ). This line of defense was designed to slow the advance of the invading forces and give the French National Army extra time to respond. The line was built between 1930 and 1940 and opened in 1935.
While it was certainly strong at its core, it was tactically inflexible and ended up only being flanked by German troops along its flanks.
For the Germans, defeating these strategic points required a special vehicle to consider, one capable of keeping up with the German Army's new mechanization theory, one capable of defeating the thick concrete houses of the Maginot Line Weapons. Work on this vehicle began in 1938 under the banner of Krupp and has evolved significantly over time.
In the face of this new threat, the development of the GpSfl IVa continues, but now the direction is that it will be tested and finalized as a self-propelled tank destroyer. Its caterpillar nature ensures it can meet the transnational challenges required for operations on the Eastern European and Asian continents, and the use of standardized German Army cartridges is logistically friendly to resource-constrained Germany.
The first batch of 100 cars is expected to be completed, with production scheduled to begin in early 1942. The two pilot vehicles were transferred to the active frontline battle group for a formal field evaluation with the 521st Tank Destroyer Battalion.
These two vehicles were active participants in the Eastern Front against the Soviet core. One of the units fought until the end of 1941 before being sent back to the Krupp factory for overhaul. After the redeployment, it eventually failed in operation as the Germans began to suffer various setbacks and eventually retreated.
However, the other pilot's vehicle was not lost due to the enemy's actions, as a fire caused by the onboard engines consumed the propellant, and the vehicle was lost again in a horrific explosion, and the crew managed to abandon their vehicle early.
This ended the short-lived legacy of the GpSfl IVa tank killer, as only these two prototypes were completed. Testing revealed several shortcomings of their approach: the powerplant was underpowered, designed for slow-speed road vehicles (27 km/h), and outperformed the Panzer IV (26 km/h) from which it was built.
The superstructure is fixed in place, which requires the entire vehicle to rotate to face the intended target area. Not only does this consume valuable fuel and oil, but over time it can stress the engine and chassis, resulting in reduced vehicle reliability.
In addition, the protection of the superstructure was weak, the rifle group had little protection against small arms fire, natural disasters and air strikes, and there was no protection for the head. In addition, it is known that machine guns have not been actively provided for self-defense against infantry and low-flying aircraft.
The magazine only allowed 26x105mm projectiles to be carried into combat, which certainly represented the tactical limitations of the series.
The GpSfl IVa's only advantage turned out to be its 105mm main gun, although that wasn't enough to save the entire program. The Germans had better success with the SdKfz 164 "Nashorn" tank destroyers, 473 of which were produced before the end of the war.
The viable 128mm armed Sturer Emil in 1942 also produced only two pilot vehicles, one of which was destroyed by the Soviets and the other captured - another German tank destroyer program that was forever abandoned.
The nickname of GpSfl IVa is "Dicker Max".
Specification
Basic
Roles
- anti-tank/anti-tank
- fire support/attack/damage
Dimensions
7.47m
2.86m
2.53m
22 tons (20,000 kg; 44,092 lb)
Performance
Performance
27 km/h
106 miles (170 km)
for everyone else in our database)
Armor
1 x 105 mm (10.5 cm) K18 L/52 gun
26x105mm projectile.
Changes
10.5cm K armored self-propelled gun IVa - official long designation; two test vehicles were produced.


