Roman-Style Catapult

UPDATED
Use the updated version here: https://www.thingiverse.com/thing:5139005
Show some love to my new website: https://WeCanDrinkTogether.com/ . It has lots of fun cups, mugs, & chalices for various ability levels.

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I made a small catapult for my nephew, so that he could lay siege to his brother's castles.

Quick and crude: there's a string trigger system, but it proved cumbersome and it was far easier to just hold the throwing cup to fire.

The real ones either had a rope trigger worked together with a winch or used a mechanical winch and trigger system. There's space on the frame if someone wanted to design one.

This style of catapult shows up in the Roman period and disappears around the time trebuchets become dominant. Rather than a counterweight, these employed tension from wetted natural fibre ropes wrapped around a greased axle.

The lack of counterweight made this style of catapult easier to relocate and re-aim, which is why their