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I want to show you in this video how I modified the 40 years old LEGO Train 7740 to the newer 9volts RC system, using the Lego Power Functions system. Its not very complicated, so I like to share how easily its possible. Because I am using only new Lego tracks and the old Lego 12v engines are gone, it was a good way for the 7740 and it makes so much fun on the long RC train tracks with the old Lego Train from my childhood.
Thanks for watching!