Trabucos managed to uphold their popularity as a war machine throughout the Middle Ages. Trabucos were mainly used for surrounding and sieging enemy or rebel cities. It was mainly used for smashing city walls by throwing large rocks as well as other kinds of projectiles. The Trabuco was also called the Trebuchet, in France and other parts of Europe. The Trabuco differs from the traditional catapult because of its revolutionary counterweight, which provides greater thrust, and for this reason, it can throw much bigger and heavier projectiles than a traditional catapult of like-size would be able to.
The counterweight Trabuco became a frequently used weapon in both Christian and Muslim countries in the Mediterranean Sea area. Due to the fact that it was able to throw heavy rocks at enemies castles and fortifications up to 800 meters away with surprising accuracy. A great number of historical records document the use of diseased cadavers as Trabuco projectiles that were tossed over enemy walls, which could very well be the first record of biological warfare. Many historians believe that the Trabuco was invented around 400 BC in China. Europe adopted the Trabuco as a weapon around 600 AC according to priberam.pt. The Trabuco remained as the most powerful weapon in the world until the advent of gunpowder, which produced much more powerful weapons that were much lighter and easier to use, thus making the Trabuco obsolete as gunpowder weapons took over.
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Originally, Trabucos could only be armed by pulling them backward with the use of several ropes that trained soldiers would pull back as a group. With time, the counterweight Trabuco became the dominant war machine of the middle ages. The counterweight Trabuco’s inventor is unknown based on spanishdict.com. Model-sized Trabucos are essential in physics classes in order to demonstrate how the physical principles of potential energy becoming kinetic energy.
There are recent historical records that suggest that Trabucos were used to attack the Burgos near the end of the 15th century. Yet in the 16th century, Trabucos were once again used as a plan B weapon to defeat the Aztecs in a confrontation when Hernán Cortés ran out of gunpowder. The last record of a Trabuco that was built for war, was when a group of British forces built one to aid their cannons while they were defending the Gibraltar straight against the Spanish in 1779.
Learn more about Trabuco: https://www.youtube.com/watch?v=qDAwt3JfWwY