The Sixty-Four-Ton Flywheel That Burst Inside a Factory

Disasters don't start with a bang. They start with a Tuesday, a small decision that looked fine right up until it wasn't. On October 15, 1891, a massive flywheel widely reported to weigh sixty-four tons burst inside the Amoskeag Manufacturing Company in Manchester, New Hampshire. Powered by a two-thousand-horsepower Corliss steam engine, this single rotating store of energy fed an entire industrial neighborhood of shafts, belts, and looms—until it catastrophically failed. I read the surviving paperwork so you don't have to. This video breaks down the engineering behind the mill's power system, the historical reality of the infamous thirty-foot flywheel, and the chain of events that led to the disaster. If you enjoy this video, subscribe to The Breakdown Desk now. #IndustrialDisaster #EngineeringHistory #TheBreakdownDesk #Amoskeag #CorlissEngine #FactoryExplosion #History Chapters: 00:00 How Disasters Begin 00:17 The Amoskeag Power System 01:43 Warnings Before the Burst 03:07 The Flywheel Shatters 04:22 Deaths and Injuries in the Wreckage 04:54 The Investigation Lost Its Key Witness 06:20 The Plausible Mechanical Chain 07:32 A Note on Evidence 07:46 The Wooden Replacement Wheel 08:16 From Failure to Safety Practice 09:22 When One Power Source Fails Everywhere 10:24 What the Record Can and Cannot Prove 11:42 Which Clue Would You Circle? 12:07 Next Case: Burj Khalifa Maintenance 12:32 A Stark Recap