» Lego technic » Luffing Crane » Leonard Goldstein » C-Model » power functions

This is a C-model of the 42055, the Bucket Wheel Excavator and it uses about 3000 pieces.

It has 6 Power Functions that are powered by one XL-motor. With six clutches the function and direction is preselected and with one main friction clutch the function can be smoothly activated.

Key functions is a container claw that fits perfectly to the 42078 Mack Anthem.

The functions are:
- Rotating the super structure
- Moving the boom
- Winch
- Driving the whole crane on the rails
- Rotating the claw
- Open/close the claw