The S-scale, known also as the S-gauge, for model trains is designed on the ratio of 1:64 [that is, 3/16 inches = 1 foot] and fits between the popular HO and O model train scales. It met the demands for a scale which was larger than HO [which was considered too small by many model railroaders] but smaller than the popular O scale thus allowing track layouts to be constructed in smaller spaces.
The American Flyer Model Train
Although The American Flyer model trains were at their peak of popularity between the 1940s and the 1960s, they actually had a long history before that, and their popularity seems to be on the increase again today. William Hafner, working as a toymaker in Chicago, developed a clockwork motor for use in toy cars in the very early part of the 19th Century and by 1905 was making toy trains using that clockwork motor.