The process of creating and testing different Lego engine designs highlights creativity and precision. Each engine is carefully built and tested to demonstrate smooth performance and balance.

With the basics done, [Brick Technology] could start experimenting with engine ... and build a starter motor, and torque generator. Just like [Brick Technology]’s LEGO electronic drums and ...

The official speed controller had been discontinued and was hard to find, so he had to build his ... of the train engine intact, [Robert] hollowed out a few cheap imitation LEGO bricks to house ...