The Kne'x Catapult

this is my knex catapult for the launch it competition when you first build it it needs some fine toning but it is a great catapult otherwise.

1 grey rod
2 large wheels
6 blue rods
one very large rubberband 
12 red rods
7 yellow rods 
11 white rods
2 orange conectors
6 red connectors
8 purple connectors
8 blue connectors
8 green conectors
3 yellow connectors
6 white connectors
3 grey connectors
ammo
one small ruberband
one red conector

these are adjustable for the most part

after you are done with this part stack the two parts of the body 

tie the small rubber band through the hole of the red connector and tie it around its self so that it may hook on