What Happened to Herringbone Gears? The Zigzag Gears So Important They Became Citroën’s Logo

#HerringboneGears #ForgottenTechnology #MechanicalHistory Herringbone gears once helped power massive ships, steel mills, and early automobiles—but why did these ingenious zigzag gears disappear from so many machines? And how did their distinctive V-shaped teeth become the iconic double-chevron logo of Citroën? Discover the fascinating history of herringbone gears, the revolutionary mechanical design that transmitted enormous power while eliminating axial thrust and reducing vibration. Follow André Citroën's journey from a small gear workshop in France to the creation of one of the world's most recognizable automotive brands. Explore how herringbone gears transformed industrial machinery, steam turbine propulsion, and early automotive engineering—and why cheaper helical gears, spiral bevel gears, and hypoid gears gradually replaced them in many applications. Learn why manufacturing these precision gears became increasingly difficult, how double-helical designs evolved, and where their remarkable engineering principles still survive today in heavy machinery and modern aircraft engines. The story of herringbone gears reveals how a forgotten mechanical invention helped shape industrial history—and left a permanent mark on one of the world's most famous car logos. 🔔 Subscribe for more fascinating documentaries about forgotten mechanical technologies, historic engineering breakthroughs, ingenious inventions, and the machines that changed the world. 👍 Like this video if you enjoy discovering the hidden stories behind mechanical engineering. 💬 Comment below: Did you know Citroën's famous logo was inspired by herringbone gear teeth? #DoubleHelicalGears #CitroenHistory #GearEngineering #IndustrialHistory #MechanicalEngineering