Repairing, maintaining, or replacing the chain on your bike that connects the front of the drivetrain (cranks, chainrings) to the back (cogs, cassette).

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Crunching/grinding chain noise

I repaired a puncture in the back wheel of my bicycle and had some trouble re-attaching the wheel to my bike. I finally did it but now the chain makes a terrible crunching noise when i pedal forward, ...
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New chain snaps after shop service

I changed my chain on my bike last week for a new 9-speed SRAM chain. When I did this it became apparent that my cassette was worn beyond use, so I took my bike for a service at my local shop. They ...
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How do I fasten my loose chain guard?

I have a dutch bike and over time the chain guard has come loose. It falls down and ends up resting on the chain. The problem is that I can't see a obvious way to fix it. There is no external bolt or ...