Mechanical Monday – Gear Basics for LEGO Technic

LEGO gears are an essential part of many LEGO Technic and Great Ball Contraption (GBC) creations, allowing builders to transmit power and motion between different parts of their models. In this article, we’ll cover the basics of using all types of LEGO gears, including bevel gears, worm gears, gear rack and gearboxes as well as how to calculate gear ratios and some tips for using gears effectively in your builds. But what is a gear by definition? We took this straight from our Terminology page: Gear: A rotating circular part with cut teeth on the outer circle. The cut teeth allow…

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GBC 47 Mill Madness Power

We like this one a lot. Monique Simon from Luxembourg send us her fan build of our GBC 47 Mill Madness in full operation. 

This machine build from LEGO set 42114 links back to our personal roots which is millers.

Thanks for sharing with us Monique! Also want to share your fan build. You can do so via our upload page.


Have you also build one of our models yourself?