![1. Chain suddenly locked up while I was riding. Why are the pedals stuck? 2. Place to learn about bikes (Boston)? : r/bikewrench 1. Chain suddenly locked up while I was riding. Why are the pedals stuck? 2. Place to learn about bikes (Boston)? : r/bikewrench](https://external-preview.redd.it/OLtP6HceDPwwkPhdJ-CEcwRar8N0cUK7eS_8YK9pgZM.jpg?width=640&crop=smart&auto=webp&s=7ce5056a1e227e1b0ad8fb92293cff43db8b1289)
1. Chain suddenly locked up while I was riding. Why are the pedals stuck? 2. Place to learn about bikes (Boston)? : r/bikewrench
![Can't remove bolt from screw on exercise bike pedal. Bolt stuck and screw spins with pedal so no leverage. Help! : r/fixit Can't remove bolt from screw on exercise bike pedal. Bolt stuck and screw spins with pedal so no leverage. Help! : r/fixit](https://external-preview.redd.it/0kmB_bAbB7xd6hGNjOrq-wCbimvPKYoIhenBGbFXTrg.jpg?auto=webp&s=10bdfc0a7da43715e2bd77b0b01855896500f046)
Can't remove bolt from screw on exercise bike pedal. Bolt stuck and screw spins with pedal so no leverage. Help! : r/fixit
![Mountain bike injuries and clipless pedals: a review of three cases | British Journal of Sports Medicine Mountain bike injuries and clipless pedals: a review of three cases | British Journal of Sports Medicine](https://bjsm.bmj.com/content/bjsports/38/3/340/F1.large.jpg)