No glue required! All parts can be assembled with rubber bands for fast and speedy modifications. Rubber bands and wooden projectiles are included!

-- In one configuration it's a counterweight trebuchet. You can shift the counterweight or adjust the main fulcrum to change the lever ratio of the throwing arm.

-- In another configuration it's a class-one lever catapult. Also adjustable for multiple lever-ratio options.

-- Or change it to a class-three lever catapult.

-- Try it with wheels or without- What effects will it have? Which way will it recoil?

-- Use a sling or try it with a cupped arm. Which is more effective? Which is easier to use?

All in all, there are more than 400 different configurations and tuning options possible with this kit. Suitable for hundreds of experiments and learning opportunities.

What you get:
All the parts needed to assemble every configuration of this kit. 3/4" and 1" wooden projectiles (the 1-inch balls weigh approx. double what the 3/4" balls weigh), Rubber bands for assembly and power in the lever configurations, leather sling pouch and nylon sling twine, and a welded steel ring for consistent sling release timing.

The completed frame is 14.5 inches long, 7 inches wide and 11 inches tall. The arm measures 20.25 inches long with multiple axle and power attachment points. This machine can hurl projectiles up to 40 feet, depending on configuration, tuning, and lots of other variables!

What you can learn:
This kit provides a real world, hands on example of many aspects of basic physics. It exposes the student to concepts of mechanical advantage, levers, gravity and energy, to name a few. It can demonstrate the storage and conversion of potential energy to kinetic energy through levers, and it is equipped with optional wheels, to demonstrate conservation of momentum. All in all, the concepts of efficiency, power and work can be demonstrated and applied.

This kit is useful for teaching engineering, science, design of experiments, problem solving and Cause-effect relationships. It was designed to get students to think about physics in a real world, tangible context. Theories can be made and tested; this process, and analyzing why the observed results occur can ultimately lead to other, more advanced concepts in physics, mechanics and mathematics. Carrying out the experiments teaches the scientific method, and contextualizes statistics. Analyzing the data can make use of statistical methods from basic averages to much more advanced topics if desired.

With 18 pages of instructions including assembly of every basic configuration, suggested experiments, tuning guidelines, independent and dependent variables to record and measure, data tables, historical information about trebuchets and catapults, and more, it should be easy to get started with this Ultimate Science Project Kit!

* SPECK, S.P.E.C.K. and Science Project Experimenter's Catapult Kit are trademarks of RLT industries.

Tools required:
Scissors, Glue, Ruler, and a utility knife. Sandpaper is optional.

Assembly time:
For a Master carpenter doing a sloppy job: about 30 minutes.
A person with no kit building experience being extremely meticulous: about 1 hour.
The model in these photos was built by Ron Toms in under an hour.

Assembled Size:
- Height: 11"
- Length: 14.5"
- Width: 7"


Range:
- 10 to 40 feet depending on configuration, projectile choice, tuning and lots of other testable variables!

Shipping weight: 5 lbs.
Box dimensions: 16" x 12" x 4"

Quantity pricing info:
0 to 4 kits, standard price.
5 to 9 kits, 10% off
10 or more kits, 15% off

Orders of $200 or more get FREE ground shipping!

For more discount pricing info, please visit www.RLT.com/wholesale

WARNING! This is a functional model catapult. It contains a fast moving arm that can cause injury if you make contact when firing. Use only under strict adult supervision.

* Can throw 40 feet when properly constructed and tuned. Your performance may vary.

* Wooden missiles, rubber bands and counterweight box are included. You must supply the counterweight material, about 320 pennies recommended.

* SPECK, S.P.E.C.K. and Science Project Experimenter's Catapult Kit are trademarks of RLT industries.