What is the upper size limit of the Grand Scales?
There is no upper gauge limit. The deciding factor is the term “Scale”. There are many 24″ gauge trains that are scale models (or rough miniaturized replicas) of larger equipment. These would qualify. Yet there are a great many industrial narrow gauge lines built to 24″ gauge and these would not, since they are “full size” trains. One of the largest examples of a Grand Scale train might be the original Disneyland equipment which was built to 36″ gauge, but was in reality a 5/8 scale replica of a standard gauge train (admittedly, that’s stretching it a bit).
