vince69619 wrote: There were a few full size engines that did run on a tank of pressurised steam remotely from the boiler, but these were usually in factories with explosives nearby. They had to make it back to the boiler before they ran out of pressure!
Yep, they are called "fireless locos". There is an unrestored one on the Sittingbourne and Kemsley Light Railway, which happily re-opened a service this year after a few idle years.
Inspiration for us at the SaveDreamland Campaign I suppose. The SKLR's website is here
http://www.sklr.net/
Here's a pic of their fireless loco. It's a Bagnall engine, named "Unique" and was designed to run inside their paper mill before lorries were invented.
The main characteristic of a fireless loco is the size of the boiler- they look pregnant! They were filled with steam at one source on the railway and as Vince says, it was essential that they could make it back to the re-fuelling point before they ran out of steam.
The engine in Pennsylvania was, like Billie, designed to run on coal and water and there is no other way she could be run.
Vince, if you have any pics of the engine you are building then I am sure nobody would object if you posted them to this thread, or if anybody did, to me personally by PM!