How Indexed Shifting Works On A Bike

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“ Sheldon Brown Cog Spacing Crib Sheet: ▶ SUBSCRIBE & HIT THE 🔔 👍 And please give my video a thumbs up 👍 ▶ ▶TOOLS ▶SHIRTS ▶WEBPAGE