• So I tried the app for the first time today and when I first went to do the rear derailleur maintenance it was in the +3 micro shift position. After a bit of fine tuning it’s ended up in -11 and this has solved the shifting problem. It now happily moves up into the large cog and with the limit screw set properly no longer throws the chain in the smallest. Weird perhaps the position of the derailleur hanger is just slightly outboard on this bike? Anyway thanks for the advice!

  • This is why I bought a RD straightening tool - it's the first thing to check to make sure all your subsequent adjustments aren't on the piss because something got bent. Reminds me I need to check mine again after I dropped the bike.

  • Interesting the university bike workshop has one so I might give it a check anyway but I figured the fact that I had just replaced the derailleur hanger itself would mean that it was likely straight.

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