The finished product. Working model Victorian steam engine.
This steam mill engine has been under construction in my workshop for several years (on-and-off). It represents a type of powerplant used during the late Victorian period to drive small rolling mills in the British iron and steel industry. These engines needed to have low inertia to enable rapid reversal at frequencies of around 15 to 30 seconds. Heavy gearing was provided at the output shaft to increase the torque to the rolls. The model is approximately 1/10 scale, and is fully working, including the overspeed governor and mechanical lubricator. Compressed air provides the motive force. A short video showing the engine running has now been added to the "workshop stuff" set