[RimstarOrg] has brought us an oldie but goodie this week. He’s built a ball bearing motor, a design which has been causing engineers and scientists to squabble for decades. [RimstarOrg] used a ...

To some clockmakers, this is a shame, as the escapement can be an elegant and mesmerizing piece of machinery, so [Brett] brought his rolling ball escapement to the exterior of this custom clock.

The most common symptoms of worn wheel bearings ... work correctly. As the problem worsens, the grinding or squealing noises get louder, which means the wheel bearings are near total failure. No ...