LEGO® Designer PV-Productions launches 2 alternative builds for the popular Technic set 42100 Liebherr R 9800 Excavator. You can use the parts of this construction set to build an impressive great ball contraption (GBC). In addition, PV Productions also offers a free building instruction for creating a fun LEGO® ball dozer.
You build the 41st GBC of PV-Productions with more than 3600 LEGO® bricks from the 42100 Liebherr R 9800 set. This MOC has an area of 34 inch (86cm) by 40 inch (100cm) and is 18 inch (46cm) high. This makes this great ball contraption a lot bigger than the original set. The balls in GBC 41 run through the system with different engines from the Liehberr LEGO® set.



While building this GBC you will learn all kinds of techniques that you can use to build your own GBC, for example. On the website of PV-Productions you will find more information about this set and you can also order the building instructions.

With some parts of the LEGO® 42100 set you can also build this funny ball dozer. The LEGO® Ball dozer is controlled with 2 engines from the Liehberr Technic set. You can download the building instructions for this small bulldozer for free on the PV-Productions website.
At ToyPro we are a big fan of the ingenious constructions of PV-Productions. Earlier you could read about his GBC LEGO® Ferris wheel, GBC 40 Tippy Tilt Trays and GBC 36 Crazy Carnival. Every great ball contraption from PV-Productions can be completely built with the parts of an existing LEGO® set. So, you get even more fun out of one construction set!
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