Question. I have a 42t ring upfront and a maximum sprocket size of 29t at the back. I assume I need a medium cage derailleur as per Campag specs, but would only have a 42t ring change this?
That'll be fine as long you're not going anywhere near mountain.
@chrismcr started
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Question. I have a 42t ring upfront and a maximum sprocket size of 29t at the back. I assume I need a medium cage derailleur as per Campag specs, but would only have a 42t ring change this?