Using a Marx motor block outfitted with smoke, a Lionel style pigtail and socket and a chromed pen casing, the formerly clockwork Hafner engine now pulls a long string of Hafner cars effortlessly chuffing smoke along the right of way. A fun yet convoluted project inspired by all the interesting tinkering with tinplate I have read and seen here and elsewhere by Steve Eastman and others..Anyone else convert a clockwork engine to juice? Id love to see them.