I designed this bike ( frame, fork, stem and drive train ) in 1985. Keep in mind MTB bikes where hardly on the functional radar. Most MTB resembled heavy duty " ten speeds ". Specialized was introducing the first mass production mtb bike ( Rockhopper ). Shocks didn't exist or clip in shoes and aluminum was extremely exotic material. I needed something that could clear 18" medians, curbs and multiple steps on the fly all day, week, month and year long as a bike messenger. A year later I had the drivetrain ( see right hand column.. 18yrs old ) Ya 1985... what where you doing in 1985.