Adjust The C-Screws On A Rear Derailleur

Introduction

The last adjustment on a rear derailleur is a C-screw. This screw presses on a small tag on the the back of the gear-hanger and adjusts the position in which the derailleur rests.

Step 1

<h3>Step 1</h3><p>Run through the gears the top jockey wheel should stay close to the cogs but not interfere with them.
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Check C-screw

Run through the gears the top jockey wheel should stay close to the cogs but not interfere with them.

Step 2

<h3>Step 2</h3><p>If the top jockey wheel is too close to any sprocket turn the C-screw clockwise to move it further away. If your shifting isn’t slick and the top jockey wheel is far from the sprockets you may be able to get it closer by turning the C-screw anti-clockwise.
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Adjust C-screw

If the top jockey wheel is too close to any sprocket turn the C-screw clockwise to move it further away. If your shifting isn’t slick and the top jockey wheel is far from the sprockets you may be able to get it closer by turning the C-screw anti-clockwise.

Pro Tip

TheC-screw is sometimes called the ‘angle-of-dangle screw’. You don’t usually need to adjust it.