Ah yes, the little Fleischman. I remember mine fondly. I about burned it up I steamed it so much. Eventually we moved somewhere and the fuel pellets were hard to get so I tried other materials. Got it too hot and some of the solder melted and that was the end of it.
Neat little toy. I don't know if kids these days would like one or not. Video games captivate them. Although, my daughter really loved a little Stirling I have that runs from the heat of a coffee cup.
Cheers,
BW