PV-Productions launches two new GBCs for the LEGO® 42121 Heavy Duty Excavator

15 July 2021

PV-Productions is back with 2 new great ball contraptions (GBCs). This time the LEGO® designer comes up with 2 alternatives for the 42121 C Model Heavy Duty Excavator Technic set. With the parts from this set and the building instructions from PV-Productions you can build 2 other great LEGO® Technic constructions besides the original excavator!

GBC 43 Rocking Raiser

This 43rd GBC from PV-Productions is a good one to start with. The LEGO® set from which the Rocking Raiser is built, is easily accessible and while building you focus on only one mechanism. The Rocking Raiser lifts balls by means of a conveyor belt, after which they can be caught or carried away again. Normally this GBC is hand driven, but you can also use a LEGO® motor to do the job.

Building instructions GBC 43 Rocking Raiser

GBC 44 Scoop Loupe

With the parts from the LEGO® 42121 set you can also recreate the Scoop Loupe. This machine lifts up two balls at the same time and can repeat its own circuit. However, you can also use it in a layout with several GBCs. The Scoop Loupe is, just like the Rocking Raiser, a somewhat easier GBC to build and therefore a good recommendation for people who start building these LEGO® Technic creations.

Building instructions GBC 44 Scoop Loupe

At ToyPro we are big fans of the work of PV-Productions. You have already read about his GBC 38 LEGO® Ferris Wheel, GBC 41&42 LEGO® Excavator and GBC 40 Tippy Tilt Trays. All GBC's are easy to build thanks to the clear building instructions and they also consist entirely of parts from existing LEGO® sets. We would therefore like to thank PV-Productions for their creativity!

About LEGO® 42121 Heavy Duty Excavator

Take on the toughest construction site challenges with this rugged LEGO® Technic Heavy-Duty Excavator. Check out the driver’s cabin, then rotate the body and move the arm just like on a real excavator. Raise and lower the shovel to transport the stones and use the 4 cones to mark out your route. Ready for an exciting new challenge? Rebuild your model into a cool tracked tractor with backhoe.