Those Yammer 650s were some great bikes. I had one for several years. Rode it from NY to California when I moved to Sandy Eggo. I rode all the way there with no problems. I pull into my brothers driveway, shut the key off and the chain broke and unravelled onto the ground. If it had broken an hour earlier I would have been stranded out in the hills towards El Centro. Not a nice place to be stranded if you've ever been out that way.