The insulation on the steam cylinders of the smaller Stuart models is a metal sheet curled around the outside of the cylinder, leaving an air pocket between the cylinder wall and the outer metal coating. Would the cylinders be better insulated if that air gap was filled with kaowool, or is it best left as an air gap?
Hi James I did a bit of experimenting last year, the best gain I got was from insulating the steam feed pipe. I insulated the cylinder of 'Victoria' with wooden slats, it improved it slightly but I did it mainly for asthetic reasons it wouldn't be worth the work involved for efficiency. Ron
Thank you for your replies :-) There'd be very little work involved in stuffing kaowool inside the cylinder, so it'd be worth it for even a small gain. The question is: would it produce a small gain, or might it actually be worse than rather less than 4" of air?