Motorized Rotating Sign for a Slot Car Track – Design and Build

The design and build of a motorized base for rotating signs as scenery on a Carrera 132/124 slot car track. Most of the parts were designed using TinkerCAD and printed on a Creality Ender 3 v2 3-D printer. All other components, such as a 12-volt motor and gearbox combo and other electrical components were purchased from Amazon or Microcenter.

The rails on digital slot car tracks (Carrera and Scalextric) are always powered, whether a slot car is being driven or not, thus it’s easy to power the motorized sign from the track instead of having a separate power supply. Of course, the motorized sign can be used on analog slot car tracks such as Carrera Evolution, Policar, Ninco, even HO scale like Tyco and AFX but cannot be powered directly by the track, thus a separate power supply would be required.

Links to components used in this video:

12v motor/gearbox combos. A perfect fit in 3D-printed base enclosure available below
3 RPM - https://amzn.to/3sN58eH

5.5mm x 2.5mm pairs male and female power connectors:
https://amzn.to/3fmCjCX

NOTE: The electrical mounting hole in the base may need to be drilled slightly larger when using the above connector. In addition, it mounts from the front (split washer and nut will be installed on the inside) unlike the one shown in the video where it mounts from the rear.

The above are affiliate links. As an Amazon Associate I earn from qualifying purchases.

Carrera power clips. Solder these to your power wiring for an easy connection to the track rails:
https://www.carreraslots.com/slot-car...

3D print files in STL format for the rotating sign base, base top, sign post insert, and sign post. Also includes a readme with instructions/recommendations and print settings. Download located at the bottom of the following page:
https://subhumanracing.net/carrera-la...

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