Knex Catapult

Introduction: Knex Catapult

A Catapult made from Knex

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: What You Need

You will need:

1 Yellow Rod
4 Blue Rods
4 White Rods
1 Green Rod

6 Red Connecters
2 Yellow Connecters
4 Single Grey Connecter/Stopper things

2 Halves of a Broken Yellow rod (optional - I broke one and found it made a good trigger)

1 Elastic Band

Step 2: The Base

Assemble the 2 halves of the base (pic 1)

Join them together with the yellow connecters, but put the elastic band over one of the white rods (as shown in pic 2)

Step 3: The Arm and Axle

Assemble the arm

Step 4: Assembely

Step 5: Optional Trigger

Pull back the catapult arm, and slot half of a yellow rod into the yellow connecter to hold the arm back. Do the same for the other side.

Load up the catapult then pull out the pins to fire.

Be the First to Share

    Recommendations

    • Toys and Games Challenge

      Toys and Games Challenge
    • Backyard Contest

      Backyard Contest
    • Silly Hats Speed Challenge

      Silly Hats Speed Challenge

    11 Discussions

    0
    cad97
    cad97

    9 years ago on Introduction

    This is really cool, i put 3 bands on mine and it will shoot a lego about 9 feet.

    0
    colethemle777
    colethemle777

    11 years ago on Introduction

    you shold try to make a knex trebuchet. a few raesons why.
    • it would be awesome
    • you make realy good instructables.
    0
    HarryG321
    HarryG321

    Reply 11 years ago on Introduction

    Thanks for the comment! A trebuchet would be awesome but I don't have much Knex... :S I'll have a look and see what I can make

    0
    pk_excel
    pk_excel

    11 years ago on Introduction

    it's a good grenade launcher. Perfect for a booby trap!

    0
    dazakazam
    dazakazam

    11 years ago on Introduction

    i modded it to a sort of bear trap thingy, lol i'v been annoying by cat=]

    0
    Vynash
    Vynash

    11 years ago on Introduction

    very good and awesome instructions 4*s