When it comes to mechanical timepieces, we’re used to seeing mechanisms stuffed with tiny gears and wheel, often of marvelous complexity and precision. What we’re perhaps less used to seeing is a ...

Electric bike technology has advanced leaps and bounds in recent years, so much so that the very foundations of the bicycle as we know it are being overhauled. Sure, even the most sophisticated ...

This article was updated May 12, 2023. It was originally published Feb. 1, 2000. Chain drives traditionally handled heavy loads in harsh conditions, and many still do. But although they started out as ...