This absolutely enormous contraption is a fully working 1:28 scale Lego replica of a Marathon LeTourneau L-1200 LeTro-Loader. Built by Beat Felber of Flickr this amazing creation all the functions of the real LeTourneau, a machine built to load 170-ton mining trucks with just a few scoops of its 22-cubic-yard bucket.

Beat’s Lego recreation of the L-1200 includes that huge bucket, controlled by two four-cylinder pneumatic pumps each powered by a Power Functions L motor and a Servo-actuated valve. Two more motors drive all four wheels via in-wheel planetary gear reduction, and the articulated steering is taken care of by a fifth electric motor, all of which is controlled remotely via three Power Functions receivers.

All in it’s an incredible feat of engineering and there’s more to see at Beat’s photostream – check it out via the link above if you did this build as much as we do.