Joined: Mar 2011
Posts: 457
Likes: 0
From: Chapel Hill
Bikes: Canfield Yelli Screamy, Pivot Mach5, Specialized Roubaix, '65 Hercules, '79 Schwinn Stingray Lil Chic, '68 Schwinn Stingray Fastback, '89 Specialized Allez Epic, '86 Battaglin World Champion
Likely bushing slop - knocking between the uppers and lowers of your suspension fork. This can be felt if you place your fingers around the stanchions where they enter the lowers, while holding the front brake. Could also be brake pad movement.