The Nemesis Ballista
A ballista might look a lot like a crossbow but it works in a very different way. A crossbow uses the spring action of wood just like a bow does. You can see those two red arms on the ballista and that makes it look like a bow or a crossbow. But they don't flex. There are skeins of tightly wound rope on a ballista. And these skeins are what flex and give the ballista it's power. You can see the skeins of black rope very clearly in one of the pictures below.
These next two pictures show some of the parts of the ballista. The winch lever is what you turn to pull back the drawstring.
The rope skeins are what stores up the energy to be released when the ballista fires.
The claw is hooked onto the drawstring to pull it back with the ratcheting winch. Once the drawstring is pulled back the arrow or bolt is placed on the slider.
The two black skeins of rope you can see clearly here are the power of the ballista. When the draw string is pulled back those red arms are pulled back. The twisting of the skeins is what builds up the energy that is quickly released.
Build the Ultimate Artillery Weapon of the Roman EmpireExplore the world of ancient artillery with this exciting ballista kit. Powered by a twisted high strength cord, this laser cut wood ballista fires over 30 feet! This 28 piece DIY kit contains wooden ammo and all the required hardware plus full color instructions. Desk-topped sized measuring 8" l x 6" w x 6" h. Required wood glue not included. For ages 9+.Part of a DIY medieval series. Also check out:3155190 Catapult Wood Kit3155191 Trebuchet Wood Kit
Make a Ballista out of foam board
It's an ancient Roman and Greek siege engine and you can make one out of foamboard. I have the template for you. Cut out the pieces, trace onto foamboard and put it together. Make a Ballista
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