Originally Posted by
L134
In a friction system can help determine if rear derailleur needs slight adjustment as one coasts up to a stop. Particularly useful on a tandem when things are too far back to see or hear. With a quick 1/4 to 1/2 gentle backpedal one can usually feel a misalignment and take corrective measures.
Yes, of course. And not just friction systems. But anyone knowledgeable enough to make such a diagnosis would be asking about aligning the derailleur rather calling the mere fact of backpedaling resistance in some gear combination a "problem."