MOC-9870 GBC Automatic Reverser

While most Great Ball Contraption (GBC) modules run easily, there are ones which, once in a while, the balls will jam. One method to un-jam a GBC is to run the module in reverse for a brief time period.

This MOC supplies a mechanism which can “detect” a jam, reverse the route of the output axle’s rotation for a brief time period after which resume the unique rotation route.