Indexing RD-RX810

You,Thu Nov 16 2023•bikes

Set the high limit screw so the centre of the jockey is aligned with the outside edge of the smallest sprocket
Set the low limit screw so the centre of the jockey aligns with the centre of the largest sprocket
Install the chain if you haven’t already
Shift to the lowest gear and adjust the B-screw so the jockey is as close to the largest sprocket as possible without causing turbulence
Shift to the highest gear, adjust the B-screw to remove any slack from the chain
Turn off the clutch
Shift to the 2nd smallest sprocket
Turn the cable adjustment barrel anti-clockwise to add cable tension until you can hear noise from the chain rubbing the 3rd smallest sprocket
Turn the cable adjustment barrel clockwise to reduce cable tension until no noise is heard from the chain rubbing the sprocket
Operate the shifting lever to change gears while turning the crank, and check that no noise occurs in any of the gear positions
Turn on the clutch
If gear shifting from the largest sprocket becomes slow with the clutch on, adjust the jockey slightly further away by turning the B-screw

Notes:

The high limit screw is the one closest to the largest sprocket and the low limit is closest to the smallest sprocket.

High gear is smallest sprocket, low gear is largest.

Adjusting the cable barrel clockwise moves the derailleur towards the smallest sprocket (releases tension)

Adjusting the cable barrel anti/counter clockwise moves the derailleur towards the largest sprocket (increases tension)