Inside the Bahnhäusle works a mechanical 8-day movement, the top class among cuckoo clock movements. Wound once, the clock runs for a full week, driving everything at once: the pendulum, the cuckoo's call, and the music box with the dancing figures. Three pinecone weights of 1,500 grams each supply the energy, one for the going train, one for the cuckoo, one for the music.
This design with pendulum and pinecone weights has its roots in the 18th-century Black Forest, where farmhouse clockmaking grew into a world-famous craft tradition. To this day, this principle continues almost unchanged: the descending weights drive the movement, the pendulum sets the tempo, clockmaking in its purest form. The clock is wound once a week by pulling the weights back up via their chains, a small ritual that has been part of living with a genuine Black Forest clock for generations.