Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

My B31 is missing the cover plate but actually had the heater (sandwiched between lots of mica) then an iron band that pushed it to the walls.  Nothing in the middle other than a big hole - say like a donut.  So I don't know if Empire had originally an iron/brass core in that center void / hole.

Sorry if I am being stupid, though I am ignorant how it was originally from the factory

Hi Rich,

All of the pictures I've seen of B31 heaters show no "core", just an open area inside the clamp. Seems like a significant amount of heat would be radiated from the back of the heater, into the clamp, and into the void. As Wayne did above, I intend to address this issue with my B31 restoration.

Paula