Facebook Twitter LinkedIn Pinterest Bluesky Threads Hi guys, i’m a beginner road cyclist and have an issue with my chain. spent the entire morning trying to fix it very unsuccessfully. was wondering if anyone had any tips? i can’t pedal forward and am completely lost right now by Pristine-Escape-8608 Bicycling Bike Bike Repair Biking Cycling Repair
No-Custard7415 on April 19, 2026 3:06 pm The derailleur needs to be tuned. There’s three settings: High limit Low limit Cable tension There’s plenty of youtube videos on the subject, but a brand new bike really should be tuned by a shop if you didn’t buy it from a shop.
WeirdStill9865 on April 19, 2026 3:36 pm I think the silver allen key screw that holds your rear derailleur came a bit loose (pic n. 3) and the derailleur is now spring bent on itself. If that’s the case it is an easy fix: you’d need to loosed that screw further, reposition the derailleur and tight the screw back again.
SCVader on April 19, 2026 6:15 pm Probably chain stuck somewhere? Take more pictures of the chain going through the rear derailleur, pulleys etc.
4 Comments
What is the problem?
The derailleur needs to be tuned. There’s three settings:
High limit
Low limit
Cable tension
There’s plenty of youtube videos on the subject, but a brand new bike really should be tuned by a shop if you didn’t buy it from a shop.
I think the silver allen key screw that holds your rear derailleur came a bit loose (pic n. 3) and the derailleur is now spring bent on itself.
If that’s the case it is an easy fix: you’d need to loosed that screw further, reposition the derailleur and tight the screw back again.
Probably chain stuck somewhere? Take more pictures of the chain going through the rear derailleur, pulleys etc.