K'nex Ball Machine Lift Instructions: Full Automatical Giant Ball Catapult

This is my new lift, the Giant K'nex Ball Catapult, in my room it shot 4 meters away (because my room is too small), but I think it can about 10 meters away maybe, it only countains a motor, it's fully automatic, the arm is tracted by a nylon cable, but the shot is very hard to regulate, because the catapult shot creates a role-back, and the elastics extend.

I've build a second version, it's economize pieces, and I've done some improvement.

And now, let's get started !

Before starting to build the catapult please read it atentivly:

WARNING! The nylon cable can cut very badly when the catapult is shooting! (it can cut plastic !)

In case of accident I decline any responsibility !

PART LIST:(for the basket version with the lift)

Rods:

-grey: 79

-red: 121

-yellow: 172

-blue: 364

-white: 164

-green: 210

Connectors:

-blue 3d connectors: 151

-purple 3d connectors: 242

-white: 33

-yellow: 137

-green: 24

-red: 111

-orange: 67

-light grey: 12

-dark grey: 72

Other:

-medium yellow gear: 3

-medium red gear: 7

-small blue gear: 3

-lock clips: 20

-pink straight rod: 5

-grey spacers: 51

-blue spacers: 56

-green motor: 1

-red double compartment motor: 1

-Y clips: 15

-nylon cable (10 kg chargeable) : 1 meters (3 feets)

-chain link: 65

-black hinge connector: 2

-blue hinge connector: 2

-cushion (35 on 35 cm): 1

-big brown scotch: 1

-rubber bands (120 on 1,8mm): 13

-rubber bands (60 on 1mm): 2

In this step you will need a teflon roll.

build the first part of the firing mechanism

build the arm of the catapult.

attach the catapult arm.

place the nylon cable.

adjuste the nylon cable.

Place the double-elastics.

And equilibrate them.

This is an optional step.

But it can be useful.

Build the first part of the basket.

Build the second part of the basket.

Build the third part of the basket.

Build the final part of the basket.

Place the basket tower.

Place and attach with scotch strip the catapult.

So, it's finally finished !

feel free to ask for help in the comment section :-)