That is toooo fun, way cool & thanks for fire'in 'er up & make a video for us. as far a powering the tail, I'm not sure that little boiler can handle the additional load. 
Probably not much power, but it ran about twice as fast in the house. It was only 30˚ with some wind so I had trouble keeping steam, but I wanted to run it in the cold to show more steam coming out the mouth

This was the first firing of the 24 year old toy.