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A series of electromagnets on the Lego vehicle ride in that track ... This is used to push the train up to speed, as well as slow it down for braking.

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 ...

In order to keep the bricky appearance of the train engine intact, [Robert] hollowed out a few cheap imitation LEGO bricks to house the electronics. He also cut out slots for JST connectors ...