After having a great time at last weeks Noreast Rally (thanks again Ed) I had a beautiful ride back to Syracuse on Saturday late afternoon. On the way, as I pulled to a stop in Geneva I got a load "squonk" from my rear disc. From there home each time I stopped I got the same deep squeal. Today, I finally had time to look - thought it may be glazed. I looked at the disc & it has small elongated raised flat glassy spots (nothing bigger than .03125" across by .125" in length). I read that you can use a scotchbrite green pad or fine sandpaper to take them off but don't want to attempt until I run it through the knowledge bank of the forum?
Why all of a sudden would the disc form glaze?
How do I get rid of it?
My bike is a 2004 America w/ 7,700 miles