My 650B Sam Hillborne has Velocity Synergy rims and Shimano Deore V- brakes with the pads that came on them. Since new the front wheel has had a little tick with each revolution while braking. I assumed this was a slightly raised joint line that would flatten out with normal wear. Over the last two weeks I have had three12-15 mile rides on gravel and chip seal roads which include some steep sections with multiple pot holes and required heavy braking. Between these rides I had the usual short commutes to work. I noticed that braking in the front had become much more uneven to the point that firm application of the front brake caused an unpleasant "thump" with each revolution. I decided it was time to clean the braking surface. When I did I found the front rim to be fairly deeply scored and in a pattern where the deepest scoring corresponds to each spoke hole. This is the same on both sides of the rim. The rear rim does not have this pattern. I have never seen this and can't find mention of it on the internets. The links below are to pictures I took to try to show the pattern. Am I doing something wrong to cause this? Should I change to different brake pads? Should I be worried about this? http://www.flickr.com/photos/carner/4889788162/in/set-72157623654420644 http://www.flickr.com/photos/carner/4889790774/in/set-72157623654420644/ http://www.flickr.com/photos/carner/4889196607/in/set-72157623654420644 David
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