K'nex Tower Crane

Here is a tower crane I made one weekend that is about 75 inches (6.25 feet) tall. It has almost every function off a real tower crane. It can rotate 360 degrees, the trolley moves from the tip of the jib, all the way back to the tower, and the hook can lower all the way to the ground no matter where the trolley is. Even though the crane can only lift a few ounces, it was a build that I really enjoyed, and (if you have the pieces), I hope you will build and enjoy too! Please rate and comment! :D

This tower crane is very large and uses MANY pieces, so it would be a really good idea to make sure that you have all the pieces before you start building. Note that the count may not be 100% perfect, but should be very accurate.

Connecters:
Gray (1 slot): 3
Gray (2 slot): 6
Orange: 142
Red: 17 
Green: 6
Yellow: 29
Silver Slide: 272
Blue Slide: 52
White Circle: 43

Bars/Rods:
Green: 154
White: 131
Blue: 238
Yellow: 259
Red: 151
Gray: 13

Other:
Brown/Tan Clip: 13
Blue Clip: 36
Black Hinge: 4
Blue Spacer: 50
Silver Spacer: 105
Micro Chain Gear (Black): 4
Micro Gear: 2
Large Gear: 1
Medium Gear: 2
Small Gear: 1
Big Wheel: 5
Big Tire: 0
Small Wheel: 4
Small Tire: 4
Motor: 3
Chain Links: 162
String: 20-25 feet
Marbles (optional): 70-90 (depending on size of load)

This is one of the easiest sections to build, although it could be considered the most important. 

Okay, I lied, this is the easiest section of the crane to build :)This part attaches to the base to hold up the jib and counter weight.

This little part is what makes the whole crane rotate!

This will hold the jib and the counter weight on it's sides.

This will hold the hook and trolley.

This small part will balance out the crane. 

These slim pieces will help distribute the weight of the jib and counter weight so they don't break off.

This will raise and lower the hook from the jib.

This will move the trolley along the jib.

This will bring the hook along the jib.

This will lift the load.

This will connect the chain around through the jib.

This will connect to the winch and the hook.

This will show you how to assemble the crane.