Details

I show and explain how indexed shifting works on a bicycle with the shifters and derailleur working together to move the chain to specific cogs on a freewheel/cassette. The bikes in the video have Shimano SIS (Shimano Index System) derailleurs, but indexing works the same on other brands of drivetrains such as Campagnolo and SRAM.

Additional resources:
Art’s Cyclery Science Behind the Magic | Drivetrain Compatibility”
http://blog.artscyclery.com/science-behind-the-magic/science-behind-the-magic-drivetrain-compatibility/

Sheldon Brown Cog Spacing Crib Sheet:
https://www.sheldonbrown.com/cribsheet-spacing.html