The tanks arrived in the U.S. probably in April 1942, and in May they were tested at Aberdeen Proving Ground. There T-34, caused more enthusiasm, has undergone testing long run cross country, along with kolesnogusenichnym tank T-4, the properties of which closely match TTX Russian medium tank.
First failure T-34 (Exploded truck) occurred approximately 60-kilometer, and after overcoming a 343 km tank out of order and could not be repaired.
Breakdown occurred because bad of the air cleaner, why in the engine crammed a lot of dust and destruction came out of pistons and cylinders. Tank was removed from the test mileage, but tested fire from guns and tanks KB 3 — inch gun-propelled guns M-10, then found its home in the collection of the test site in Aberdeen. The tank is KB, despite the biggest fear on the part of our tank builders, tests mileage of 50 km withstand normal.
The hull shape of the T-34 is very attracted to all South American professionals, while KB — no.
Analysis of the armor showed that both tanks armor plates which are homogeneous in terms of chemical composition, have a shallow surface hardening, the bulk of the armor plate — sticky.
The T-34 at the Aberdeen Proving Ground, rear view, 1942
South American spetsy considered. that changing technology seaming armor plates could reduce their thickness, keeping the same snaryadostoykost. But this expression is not subsequently confirmed by practice.
The main drawback of the body has been recognized as the permeability of the bottom portion at overcoming aqua bottlenecking and top during rain. In heavy rain into the tank through the cracks of impingement a lot of water, which could lead to failure of the electrical equipment and even ammunition. Placement of ammunition considered successful.
The main drawback of the tower marked and the crew compartment as a whole — the tightness. Americans could not understand how our tanks are mad in the tank in winter overcoats. Marked bad steering tower, much less that the motor is weak, overworked and terribly sparks, with the result that burned resistance adjustment speeds of rotation, gear teeth crumble. Wish to put forward a hydraulic steering gear, or just throw a two-step manual.
F-34 gun, disassembled from the T-34. Aberdeen Proving Ground, 1942
F-34 gun artillery liked for its simplicity, reliability in operation and ease of maintenance. Instruments recognized shortcoming not the highest initial speed (about 620 m / s against a probable 850 m / s), which are linked with poor Russian gunpowder.
The design was recognized pretty sight, even the best in the world of the famous South American designers, but the quality of the glass left much to be desired.
Iron truck T-34 were are ordinary in design, broad, are South American (rubber), in their opinion, were better. Shortcoming of our track circuit Americans found a small truck on the strength of the gap. This was exacerbated by bad old quality tracked fingers.
Suspension on the T-34 is recognized bad, because of suspension "Christie" Americans have undeniably abandoned as obsolete. At the same time, the suspension tank KB (torsion) as a success.
Diesel V-2 light and bystrooborotny. Everyone liked the South American military diesel tanks, they were sorry to all the massive diesel engines in the U.S. Navy was taking to boats that did not allow them to equip mass produced tanks.
Disadvantages of diesel V-2 — a bad air cleaner that:
1) generally does not clean the air entering the engine;
2) The capacity of the air cleaner is small and does not provide the right amount of air flow even when the engine idles.
As a result of this motor not develop full power and enters the cylinder dust leads to the triggering of their Hassle falls compression and the engine loses power.
KB-1 tank during tests at Aberdeen Proving Ground. Spring 1942
In addition, the filter is made from a mechanical point of view is very primitive: a spot-ground metal burnt through, leading to leakage of oil, etc.
The tank KB filter is made better, and it does not provide a sufficient flow of clean air is normal.
Box unsatisfactory obviously outdated design. During its operation on the tests it is one hundred percent crumble teeth on all gears. Both motors bad starters — Low-power design and unreliable.
Tanks T-34 and KB were, from the American point of view, slow-moving, however due to a decent ground engaging overcame the slopes is better than at least some of the American tanks. Welding armor plates are very rude and careless. Radio stations in laboratory tests were good, but due to bad bad screening and protective devices after they are installed in the tanks could not have a normal communication at a distance of great than 10 miles. The compactness of radio stations and their location in the machines are very fortunate. Machining equipment parts and parts with very few exceptions very bad.
Thus, the Russian T-34 and KB are not made furore over the ocean (?! And then they had to associate with what!). South American designers find in them both advantages and disadvantages, which is natural.
Information taken from the book "The tank might of the USSR."