It has never been easier to build a complete Great Ball Contraption (GBC) loop yourself! The GBC 44 Scoop Loupe features a nifty scoping motion which lifts 2 GBC Balls at a time. The GBC can be used as a self contained loop or participate in a GBC layout. Using a more accessible LEGO Set and focusing on one single mechanism this GBC is by far one of the best GBCs to get started.
This GBC is entirely built using only parts from the LEGO Heavy Duty Excavator and can be referred to as model C of the 42121. This GBC makes sure you master the GBC building techniques and tricks so that you eventually also can build your own GBCs. By default the whole machine is powered by hand but it can easily be upgraded with any LEGO motor (more information in the building instructions).
Take your Scoop under the Loupe
When looking at the GBC 44 Scoop Loupe it is directly clear that all the fuzz is about the scooping shovel which can take 2 GBC balls at once. A complex combination of gearing and linkages deliver a beautiful motion which is mesmerizing to the eye. The shovel and the timings mechanism work in perfect sync to make sure that the GBC Balls are dropped in time to fill the shovel. Almost no gear left untouched to get the correct gear ratio needed, even using the big turntable part as a gear. Nice part usage for sure! Once the GBC Balls are lifted they can spin in the optional GBC Funnel Turbo Spin (Left version) and roll down back to the input of the GBC via the return path. While building you will learn about gearing, linkages, mechanisms, synchronization, sturdy construction and so much more.
Fun Fact
As a follow up on the “easy to approach beginner” Conveyor Belt (known as GBC 43 Rocking Raiser), we wanted to experiment with the unique shovel part from the set. After many tries we came up with a fluent shovel motion which is very satisfying to watch. Don’t you agree?
Building Instructions Preview
Try before you buy. We completely understand. See the building instructions previews on the left or try one of our free building instructions.
Upgrade your GBC 44 Scoop Loupe
In the building instructions is explained how to easily upgrade the GBC 44 Scoop Loupe with various parts.
GBC Funnels
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Power & Automate
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Kevin rosado –
Very clever model. I could never think of anything like this. well done.