Setting Up Your Rear-Mech
A step-by-step guide to setting up your rear-mech...
The humble rear derailleur (or ‘mech’ to its friends) is a remarkable beast. When you think about what it’s trying to do it’s a wonder it works at all, let alone as well as it does. They don’t like going without periodical TLC, though, so if your shifting’s gone a bit awry here’s how to sort it.
Usually that’s all there is to it. Sometimes, though, it just won’t work. Here’s the common problems and some possible answers:
|Mech won’t shift into smaller sprockets||Turn barrel adjuster clockwise|
|Mech still won’t shift into smaller sprockets||Clean and lube cables|
|Mech won’t shift into larger sprockets||Turn barrel adjuster anticlockwise|
|Mech won’t shift into smallest sprocket||Check high limit screw|
|Mech won’t shift into biggest sprocket||Check low limit screw|
|Constant clicking in low gears||Jockey wheel hitting cassette – adjust B-tension screw|
|Mech won’t work no matter what I do||Jockey wheels possibly worn. Replace. |
Mech itself possibly worn – can you wobble the cage from side to side lots?