Another LEGO excavator? Yes, but this one is the replica of the largest backhoe excavator ever built! Let me introduce the Liebherr R9800. Weighing around 800 tons, 10 metres high, with a bucket capacity up to 47.5 m3, this steel monster requires two V-16 engines to be moved, for a total power of almost 3 MW. The 1/50 scaled LEGO version nearly fits with the minifigs size (They are actually a bit too big, but it is more fun to have a LEGO driver in it!). I designed it mainly on LDD but I checked the kinematic and the rigidity of the assembly with real bricks to be sure it is ok. Unfortunately, LDD does not contain all pneumatic parts. I did what I could to model them, but none of the hoses is represented although they are integral parts of the design. What's in the box 4108 Blocks