The Lego Crane is finally complete and seems to work perfectly. Amazing as I have 9 pieces left over. Here are the photos and videos to prove it. On some devices it may take a little while for the videos to load and automatically run.
Finished Crane
Click on the photo to see a larger image. The wheels rotate and steer, the jib rises and extends, the hook rises and lowers, the crane turret rotates through 360 degrees and the legs rise and lower.
Controls
There are 6 clutches used to assign the single motor to each of parts that move. Each clutch has 3 positions, forward, neutral, and reverse. This photo shows 4 of the clutch controls.
Stabiliser Legs
Click on the image to see the legs lowered.
Rotate the Crane
Click on the image to see the whole top of the crane rotate.
Raising the Jib
Click on the image to see the jib raise.
Extending the Jib
Click on the image to see the jib extend.
Driver’s Cab
And a final image of the driver’s cab. Note the fire extinguisher just behind the cab door.
What next then?