Grandfather Clock Mechanisms
Built by Geoff Wright in March 2010
Demonstration mechanisms showing how a grandfather clock could be built using parts from set 9.
- 2:1 reversing contrate
- 2:1 non-reversing contrate
- 62:1 gearbox using driving bands between hour hands (rotates once every 12 hours) and Date Dial (rotates once every 31 days)