It has never been easier to build a complete Great Ball Contraption (GBC) loop yourself! GBC 24 features a Sturdy rocking module which covers a full loop so the ball flow never ends. Using a more accessible LEGO Set and focusing on one single mechanism this GBC is by far the best GBC to get started.
This GBC is entirely built using only parts from the LEGO 42060 Roadwork Crew set and can be referred to as model C of the 42060. This GBC makes sure you master the GBC building techniques and tricks so that you eventually also can build your own GBCs. The whole machine is powered by hand on default but can easily be upgraded with any LEGO motor (more information in the building instructions).
Master gearing & mechanisms
Learn about the wonderful world of mechanisms by building our GBC 24 Road Pump which features a highly efficient Pump Lift Module. The main idea is based on inserting balls on the bottom of the module, pumping them up and push other balls out on the top. This is done by a rail which is filled up with balls. New inserted ball pushes the first ball out again. By mounting the rail on an angle you get a height difference which the module uses in it’s advantage.
The balls will be pushed out of the rail and return to the base via the return path. By doing so the loop will never end. The input box of this GBC also includes an ball unclogging system which prevents the GBC Balls from getting stuck.
This GBC has an extra feature which allows you to easily remove the return path and put your GBC 24 in a bigger loop and combine with other GBC Modules.
Fun Fact
Designing a GBC from such small part inventory really took all the ingenuity and experience we gathered over the years. Parts are being used in a new way and many problems had to be solved for getting this GBC to work and making it sturdy and reliable. Using over 95% of the parts that come with the set we really did get the best and most out of the original LEGO 42060 set. There was a real challenge to build a GBC from such a small set but we succeeded again.
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- LEGO 42060 Roadwork Crew
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- GBC 24 – 42060 C Model
Building Instructions Preview
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 24 Road Pump
In the building instructions is explained how to easily upgrade the GBC 24 Road Pump with various parts.
Power & Automate
How cool is that!
Learn more!
Get the accessories
We have GBC Balls, handy electronics products and fun accessories available. Take a look at all our accessories!
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Jackson Hawbaker –
A very nice and fun build!! The instructions were clear and very well made.
paweturalski –
Suprisingly small but still nice. I built it in only ±30 minutes but I’m a experienced builder. Finished result is great. It works very, very smoothly, I think that hand powering is more satisfying than watching model lol. Working GBC is also satisfying. In video it looks boring, but in real you can feel big difference. I think that it works only a little bit slow when it is powered by motor, so sometimes hand powering is better. This is very nice GBC for basic LEGO builders and for people who start GBC adventure :)
Ken Gross –
Built this at work yesterday between students, it took me about two hours of actual construction, abut it went together very easily. It is pretty darn nice for a simple set, and the module can be put in to a loop with other modules.
Very well done, and very cool.