![The chain keeps falling off when shifting up to the big chainring - what could be going wrong? : r/bikewrench The chain keeps falling off when shifting up to the big chainring - what could be going wrong? : r/bikewrench](https://preview.redd.it/n6zde5ht03251.jpg?width=3648&format=pjpg&auto=webp&s=fd261bcc32ea2d851319c3bad9353865f652e42b)
The chain keeps falling off when shifting up to the big chainring - what could be going wrong? : 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 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
![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)