![Rear gear on one-speed bike keeps falling off. This small band I am pointing at in the picture keeps popping off while riding causing the entire back gear and chain to fall Rear gear on one-speed bike keeps falling off. This small band I am pointing at in the picture keeps popping off while riding causing the entire back gear and chain to fall](https://preview.redd.it/kax4kzr5voo41.jpg?auto=webp&s=ad9af79a1eea0afc807573f034836f0bee3554c0)
Rear gear on one-speed bike keeps falling off. This small band I am pointing at in the picture keeps popping off while riding causing the entire back gear and chain to fall
![Mini bike chain keeps coming off. In a bit of frustration I put it for sale. Now I'm thinking of giving it another go. Sprocket seems to not be in straight but Mini bike chain keeps coming off. In a bit of frustration I put it for sale. Now I'm thinking of giving it another go. Sprocket seems to not be in straight but](https://preview.redd.it/t3ddstvlo5951.jpg?auto=webp&s=de04edc193487b315d72744f4d5161d7752e2fc3)
Mini bike chain keeps coming off. In a bit of frustration I put it for sale. Now I'm thinking of giving it another go. Sprocket seems to not be in straight but
Chain keeps falling off of sprocket, tensioner keeps falling and hitting spokes | Motored Bikes | Motorized Bicycle Forum
![If the chain keeps popping off the lower pulley, is the derailleur bent or do I just need a new pulley? Derailleur is locked when it pops off. : r/bikewrench If the chain keeps popping off the lower pulley, is the derailleur bent or do I just need a new pulley? Derailleur is locked when it pops off. : r/bikewrench](https://i.redd.it/882d1wnqic371.jpg)