![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
![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)
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
![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)