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The
very inferior cross-country performance of the A7V was apparent at
an early stage: the capture of British Mark IV tanks at Cambrai in
November 1917 enabled the
German engineers to examine the British machines in detail and
better appreciate the good points of their design as well as their
weaknesses. The great feature of the British tanks was their ability
to move across shell-torn and entrenched ground - a feature owing
much to the overall tracks and low centre of gravity helped by the
armament being placed in side sponsons. The British machines were
designed only for a short life and for ease of production, however,
and lacked refinements and did not even have sprung tracks.

It
was at first proposed that an exact copy of the British Tank, Mark
IV should be put into production in Germany where drawings could
have been made up from dimensions taken from captured vehicles. This
suggestion was impracticable, first because of the difficulty in
many cases of manufacturing identical components and, secondly,
would have been wasteful of effort in that most if not all of the
materials already in production for the A7V could not continue to be
used.
The
best solution for the A7V committee was to design a new tank on the
lines of the British tanks, but utilizing as many of the original
A7V components as possible. The result was known as A7V/U - the
suffix denoting “umlaufende Ketten”, or “tracks going all around”.
This tank, the prototype of which appeared in June
1918, was generally
similar to the British tanks in appearance, although the side
sponsons necessitated by the use of overall tracks were placed
rather further to the rear. The fact that the tracks were sprung and
the relatively high power of the twin Daimler engines uprated to a
total of 300 h.p. gave the
A7V/U on trials a maximum speed of about 12 km/h around twice that
of the British heavy tanks.
Its suspension was based on Holt
tractor (just as A7V) and was 8.5m long.
Improvements over the A7V included increased armour protection and
better ventilation.
Armament consisted of two Nordenfeld 57mm guns mounted in side
sponsons along with four to six 7.92mm Maxim 08/15 machine guns.
Armor protection ranged from 20mm to 30mm and entire tank weighted
39.6 tons. A7V/U was operated by the crew of 7 men.

The
trials of the A7V/U showed that its heavier weight (as mentioned,
nearly 40 tons) made it clumsy in action and limited its tactical
employment and, furthermore, the track was liable to be shed by the
design of the guide rails. These faults could be overcome, however,
and twenty A7V/U’s were ordered on 12 September 1918 although the
end of the war put a stop to their production.

There were also plans to make two
variants: A7V/U2
was to be a version with smaller sponsons and machine gun mounted in
a cupola, while A7V/U3 was to be armed only with machine guns. These
projects never materialised.
How
to Model this tank
There is no kit available, so you will have to
scratch build it.
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