norton's rotary-engined machines (ca. 1987-91) were built for street and track. the classic (naked, air-cooled) and commander (touring, full faired,liquid-cooled) were street versions, they also had an 'f1', liquid-cooled race replica. both were 588 cc twin rotor jobs. the full race versions won the uk formula 1 championship in 1989, the machine also took a solid 2nd in the 1990 iom senior tt. an nr750 or mv f4s serie oro might be real rare and exotic, but the norton rotaries are even more unique. the rest of the norton story is tragic, and not for this tread.