Racing is Hard on Equipment

     It's not a saw blade, it is what's left of a rear sprocket on a strutted Sportster after a hard run across the country. 

     I first noticed extreme chain and sprocket wear during Stampede 9, when my Sportster was strutted. 
     I wrote about that unusual wear in my "belt vs Chain" post (click on the label below).

     I think that there is something about a strutted Sportster that causes heavy chain and sprocket wear. Perhaps it is the lack of any "cush drive", like we see in many other chain driven motorcycles. 

     Gordon Porritt (#4) finished 33rd despite the extreme chain and sprocket wear. 
     

Belt vs Chain

     This is the belt from my '04 Electra Glide. It has 110,000 miles on it. I just replaced the belt not because it was worn out, but because the pulley was.

     I recently read an entry on a motorcycle forum, where the writer opined, "Chains drive motorcycles, belts hold your dress up." The above belt and pulley have 110 thousand miles on them, the chain sprocket below is from my Sportster after the last Stampede and has a total of 7,000 miles. 

            Your honor, I rest my case.