This model was a disaster. Its ancestors, the Dominator 500 and 650, were apolaustic. The Atlas was bored out to 750. The resulting vibration was horrific. Thus, the Atlas had a short life. It was replaced by the smooth as silk Commando, far more rideable, although without the immortal featherbed frame. Those of us who have spent a riding lifetime with Norton think the company made a mistake: it should have kept the frame and built a modern motor.