Total Comet Transmission Failure
This is made in the USA, (sic) lol. I was cruising last week on a main road about 45 mph and suddenly the rear plate from the rear Comet pulley snapped away from it's keyed shaft. It wedged into the drive chain and locked it, snapping the chain in two. On a side note, the master link didn't break. Master links must be stronger than the regular chain. Because the chain snapped in two the bike just coasted to a quiet stop. I could have met the pavement if it weren't for that. Here is what happened:
This is the back side of the Rear Comet pulley. You never see this side because it faces in toward the engine. Look closely at the welds connecting the shaft to the pulley. Sloppy welding.
Here is the break point. It came off right here. Boom! I ordered a replacement Comet pulley and it was not welded but was one piece. They must have changed the design from the plant that makes them as they knew it was a weak point. So take your rear pulley off see if it is the welded design. If it is, weld it again for more penetration or order a replacement that is a one piece design. BTW, this part had about 2200 miles on it before it snapped off giving no warning at all that it was about to die. Fortunately I didn't die! :O