Originally Posted by
Ol Danl
Are you sure your axle is not protruding slightly through the dropout? I tightened one several times one day, then finally realized that was the problem on my right rear. It's gotta be inside the dropout a little.
Ideally, the axle shouldn't protrude past the dropout; Shimano QRs, however, have 3mm recesses on both sides to ensure clamping even if the axle protrudes a little.