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 ...

If you’re really strapped for cash though, you can go as far as using cardboard ... We’ve actually featured other LEGO train hacks before, like this neat automatic decoupler design.

Remote-controlled, wooden, ride-on, Lego, and model trains for kids of all ages. Many kids will go through a big-time train ...