Onager - range/size/load

[Condottiero Magno]

135kg? There's no way in hell that's right. The Romans noted that their artillery wasn't capable of knocking down walls until the Traction Trebuchet arrives. You simply can't make a Torsion spring assembly that big.

The traction trebuchet wasn't capable of knocking down walls, just clearing battlements and an effective anti-personal weapon. The counterweight trebuchet resulted in wall modification - for instance, the north-west fortifications covering the Blacharnae area.[url=https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjr89CHk4bTAhVIKGMKHedYBuAQFggfMAA&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBlachernae&usg=AFQjCNFxskfXKDtrk3Zr6KhVVq4shZLq-g][/url]