Hello, I just finished a new Lego clock. It is driven by a 6lbs weight. It has a run time of about 25 hours. It chimes the hour on the hour. All pieces are Lego except the chime, the weight, & the 80lbs fireline. I'm going to make a mlcad file when (...) (17 years ago, 1-Apr-08, to lugnet.technic)