• So I stacked the gravel bike hard-ish yesterday. After picking myself up, I gave the bike the once over, and other than a scuff to the shifter and rear der (AXS XPLR), everything looked fine and shifted fine (including the biggest cog - see later).

    Later, when I got the bike home, I took the rear wheel out to clean the bike properly. I also took out both jockey wheels as they were caked. Here's where it gets weird: after replacing the jockey wheels and the rear wheel, the derailleur/app now 'thinks' it's in a different gear to the one it's actually in. For example, when it's in the largest sprocket, the app says it's in sprocket 2, and sure enough, it will shift over the top if I try. Conversely, it won't drop into the smallest cog (10T), even if I max out the microadjust. This only seems to have happened since removing the wheel/jockey wheels.

    I can get the LBS to check the rd hanger, but a bent hanger wouldn't explain why it shifted fine immediately after the crash. The jockey wheels are installed correctly, the wheel is visually true, I've updated firmware, checked the thru axle is seated properly, and I haven't touched the limit screws or B screws.

    Any further ideas?

  • Unfortunately it sounds like the internals of the rear derailleur have been damaged in some weird way.

    I had something similar recently and got it back to SRAM tech. They give it a 10 minute assesment and sent a replacement.

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