You have captured the steam train engine perfectly, it's exquisite.
Even standing still, the steam engine breathes. You hear the faint, rhythmic hiss of safety valves and the deep, resonant hiss of escaping steam, which sounds like the engine clearing its throat before unleashing immense force.
The air around the smoke-box is thick and shimmering with heat and the heat radiating from the smokestack warps the scenery behind it. The scent is unmistakable, an intoxicating blend of hot oil, burning anthracite and acrid, metallic smoke.