This Bike Is Insane… 18 Speed Gearbox Drivetrain With THREE Belts!

Summary

This video explores how Pinion gearboxes are integrated into tandem bicycles, specifically addressing the challenge of differing crank and sprocket speeds. It highlights Co-Motion Cycles' unique triple-belt setup and then examines two alternative solutions from Campmajo and Belt Bikes that offer simpler integration. The takeaway is that while Co-Motion's design is innovative, the Campmajo or Belt Bikes approaches are potentially more practical for custom tandem builds.