At the world's largest indoor model railway meeting for 5 inch and 7 1/4 inch model trains, also some beautiful live steam locomotives in 1/32 scale were shown. These steam locomotives are usually fired by gas or by methylated spirit.
YouTube:
https://www.youtube.com/watch?v=SC5Vnv1bJic
live steam rail transport modelling rail transport modelling model railroading model train model railways model railroading toy train garden railroads steam locomotives fired gas methylated spirit 1:32 1 Gauge Gauge One