Note: This Great Ball Contraption (GBC) is entirely made out of LEGO parts from an Official LEGO set.
It has never been easier to build a complete Great Ball Contraption (GBC) loop yourself! With over 3000 parts, 400+ pages of building instructions and a footprint of 100 cm (40 inch) by 60 cm (24 inch), this GBC is the biggest, one of the most epic GBCs we have ever created. It’s way bigger than the original LEGO model and it features multiple GBC modules which all work together in harmony to make a full loop so the ball flow will never end. This GBC is entirely built using only parts from the LEGO Bucket Wheel Excavator and can be referred to as model C of the 42055. While building this GBC you will master the GBC building techniques and tricks so that you eventually also can build your own GBCs. The whole machine is powered by one LEGO motor which comes with the LEGO 42055 Set.
This GBC works great with our GBC balls.
Did you already check out the rest of our 42055 C Model family.
This GBC is a Giant factory plan for GBC balls and fits perfectly in the mining theme of the original 42055. The Dual Belt Lift Module brings the balls through a rotating tunnel to the top, a long path then lets the balls roll to a Mining Cart Module which uses a complex modified cardan gear mechanism to drive the cart in a straight line. The cart picks the balls up below and carries them to a higher level. The Moving Arm Module, powered by a slider mechanism, distributes the balls evenly over 4 weight balancing shovels who measure the amount of balls passing by. A full automatic filling mechanism loads the balls in the cups of the Rotating Cup Module which drops them again in the Dual Belt Lift Module. Minifigs workers (not included in LEGO 42055) can overview the mining from the control tower and run the whole operation on their own;) The control room can raise, lower and rotate.
While building this GBC you will learn basic engineering at it’s best like gearing, forces, sturdy constructions, automation, cool mechanism like the cardan gear mechanism, the slider mechanism and so much more!
The whole GBC is split into different parts/modules which are assembled together during the built. Because of this constructions and flexibility it is always possible to separate the modules and make your own unique configuration.
It is possible to move the whole structure at once when you hold it right. However, when moving the GBC, we advise is to place the GBC on a solid plate or to disassemble the GBC in separate modules again. Footprint GBC 15: 100 cm (40 inch) by 60 cm (24 inch).
You can separate the left and the right input of the Dual Belt Lift Module by placing a divider between the belts.
Also it is made easy to take out the yellow ball guiders so you create an in and output according to the GBC rules. In this way you can also easily connect this GBC to all our other GBCs to make the loop even bigger.
Batteries can easily be replaced.
Get the GBC Balls and accessories
GBC 15 Mining Plant all over the world
Did you also build one of our GBCs yourself, with your friends or family? We would love to see and share it! Send us a picture or video via one of our social media channels or get in touch via email.