Rotating Layouts Used in Advertising Films

One curious type of layout, about which very little has been written, has always fascinated me.   These are the rotating layouts I have seen used in advertising footage, presumably for TV spots.  They are usually rotating in the opposite direction of the movement of the train, making the train stand still in the view of the camera, with the scenery rotating past.  I purchased a video of old toy train ads and much of the footage is devoted to these layouts.  They consist of only a simple circle of track with scenery.  Sometimes other non rotating background scenery is also shown.   Assuming that stock track is used, I would estimate that they are approximately 48 inches wide, since there is some scenery on the outside of the circle of track.

They look as if  they could be constructed with a disc placed on a sideways mounted bicycle wheel.  My first thought was that they were motorized, considering the close synchronization of the rotation speed and train speed shown in videos.  They actually work on a much simpler principle.   In a copy of the Train Collector's Quarterly, 1 I found a reference to a Popular Science article 2 which explained how to build such a display.  The article showed an HO version featuring an American Flyer HO Frontiersman set, but the principle is the same regardless of scale.  The actual force that keeps the train in place and allows the display to rotate is gravity.   The display, which is indeed built on a bicycle wheel, is titled slightly to one side.  With such a tilt, the train seeks out the low spot on the wheel and stays there, with the display rotating under it.   All that would be required to allow the train to surge ahead is to stop the rotation of the wheel and this appears to be demonstrated in the video link.  You can read the Popular Science article online at this Google Books link. 

How To Build A Rotating Layout

I also learned that this type of display was not unique to American Flyer.   Lionel marketed a version of such a rotating layout to dealers in 1951 under the "D52" catalog number. 3

For those of you who haven't seen such layouts, there is one video available on the internet and you can view it by clicking on the video link above. 

Notes

1  Advertising Tinplate Trains, Postwar Era, Part 15, 1960, by Raymond J. Fetzner 73-5135, Train Collectors' Quarterly, January 2005, Vol. 51, No. 1, page 4, at page 7.

2  The Speeding Train That Goes Nowhere, by Carlton J. Bucher, Popular Science, April 1960.

3  Advertising Tinplate Trains, Postwar Era, Part 15, 1960, by Raymond J. Fetzner 73-5135, Train Collectors' Quarterly, January 2005, Vol. 51, No. 1, page 4, at page 7.