This is just some of my photos of some Trebuchets that I have scratchbuilt out of evergreen styrene for my 15mm Mongol's .
The trebuchet in the left is a Chinese siege weapon were team of men pull down the on ropes. The trebuchet on the right is a the contweight trebuchet from the the siege of Xiangyang were the Khubbilai Khan's Mongols employed Muslim engineers in 1272 .