The Lego walking drag-line takes its first steps.

Yes, I know, this is the most boring movie you have ever seen! For me it marks a great achievement: when I started working on this model back in 2005, I had no way to know if the walking mechanism would be able to lift and propel all the weight of the machine.
After many delays (due to lack of parts and other projects), a recent push over a weekend enabled me to install the boom, power the rotation mechanism (only one out of four slewing motors is powered in the video), add some counter weights (two transformers that will eventually power the model plus a lot of Lego weight elements) and test the walking mechanism.
The walk cycle is very slow (although almost twice as fast as a real machine!) and moves by only a few millimeters per step but it works!
Up to date pictures can be seen in the gallery.