This is a trial of Lego construction machines to feed and remove Lego balls from great Lego ball contraptions. The excavator is from the technic set 8294 and was re built by a friend to use the Lego power functions IR set. The final build will see it complete with powered tracks and panels. The front end loader is scratch built with pneumatic arm and bucket and power functions IR steering and drive, again the final build will see it paneled and detailed. We will soon have a dumper truck built to complete the set up.