Hi,
I happened to find these two BALCO / IRWIN locomotives over at Nelson Machinery and equipment LTD. Looks like it could be used for a private 36" gauge railroad. If someone wanted to provide a small train ride with a fake body on it, it might be usable for a private/public ride.
They have some small diesels also. 18" gauge is not too big for a small outdoor railroad.
[
www.nelsonmachinery.com]
Doug vV