Building a cat-sized Lego train with remote control has become a unique engineering feat. Featuring 3D-printed rails and wheels, this train is designed to carry cats on a comfortable ride. With a ...

A series of electromagnets on the Lego vehicle ride in that track. The can be energized, working as a linear motor to push against ... This is used to push the train up to speed, as well as ...

The basic components needed were an H-bridge driver to operate the motor and an ... appearance of the train engine intact, [Robert] hollowed out a few cheap imitation LEGO bricks to house the ...