The Powerful Reverse power catapult

This is a catapult built by Nick and his dad Christopher. It is an original design that Nick created and it is the second (and more) powerful version. This one shoots a projectile sixty feet!

And there are a couple of really great engineering lessons in this progression to a more powerful catapult. The first one that they built had one bungee cord and this one has two. That is kind of easy to figure out but when you do something like this you will need to do a few other things too, like they did! You probably need to use a stronger wood and in the case of this catapult they used oak which is much stronger. They made the first catapult out of Pine. And, they had to add more bracing which of course makes sense. Also, because you have two bungee cords you have to think about where you will anchor them and in this catapult they came up with a good solution.

Finally, and maybe most importantly is how they now have their pivot point assembled. In the first catapult they simply used a threaded rod as a pivot point. But, this does lose power and in this catapult, to get more power, they put a brass tube in the throw arm so the threaded rod would pivot with less friction.

If you are building a catapult you should think about these various improvements that they made. They make a big difference!

Mini Weapons of Mass Destruction: Build Implements of Spitball Warfare

PopularMechanics.com selection for one of The Best DIY and Home Improvement Books of 2009

We’ve come a long way from the Peashooter Era: with the advent of modern household products and office supplies—binder clips, clothespins, rubber bands, ballpoint pens, toothpicks, paper clips, plastic utensils, and (of course) matches and barbeque lighters—troublemakers of all stripes have the components needed to build an impressive, if somewhat miniaturized, arsenal.

Toy designer John Austin provides detailed, step-by-step instructions for each project, including materials and ammo lists, clear diagrams, and construction tips, for mayhem-loving MacGyvers. The 35 devices include catapults, slingshots, minibombs, darts, and combustion shooters. Build a tiny trebuchet from paper clips and a D-cell battery. Wrap a penny in a string of paper caps to create a surprisingly impressive “bomb.” Several of the projects even include variations where combatants mount laser pointer sights to their shooters to increase their accuracy.

Finally, once you’ve built your armory, the author provides plans for a Top Secret Concealing Book to hide your stash, as well as targets for shooting practice. Never let your personal space go undefended again!

Whoosh Boom Splat: The Garage Warrior's Guide to Building Projectile Shooters

The Art of the Catapult: Build Greek Ballistae, Roman Onagers, English Trebuchets, and More Ancient Artillery - Nice book that shows you how to build ten different catapult projects, moderate wood working and pvc piping kind of stuff. Good book with complete instructions and materials lists.

Backyard Ballistics: Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices Want to get a little more creative? This book is off the hook!

Working Wood Catapult Diy Kit, 6" X 5" X 10"

Expand your kingdom one cubicle at a time with this working replica of one of the most infamous and powerful siege engines... the catapult. When completed, the catapult can shoot a ball of soft clay more than 15 feet! Lay seige to your entire department with this formidable weapon and mercilessly crush cubicle uprisings. Includes all needed parts and soft modeling clay for projectiles. Requires knife and wood or white glue for assembly

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Table of Contents for this tutorial

BACK TO THE CATAPULT MAIN PAGE

1. Make the Table Top Troll Catapult Home and materials requred
2. Begin assembly of the sides and base
3. Assemble the catapult firing arm
4. Complete the assemblly and finish by painting
5. Video of this catapult firing
6. Books/Medieval store
7. DVD's Documentaries about siege engines
8. Free Catapult Plan

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