Downhill
The 1st downhill time-trial race took place in Fairfax, California on October 22, 1976 on a fireroad now referred to as Repack Road, due to the need to repack the single rear hub brake after a descent. The bikes used were based on beach cruisers that had a single rear brake that worked by pedalling backwards. A mechanism came into operation causing a conical metal (bronze?) brake shoe to be wound on a thread into a conical metal hub. To prevent a metal to metal brake from snatching it was always filled with grease. Heavy use of the brake during the descent would cause the brake to over heat, melting the grease till it drained from the hub and required repacking. Ten riders descended 1300 feet of Repack in about 5 minutes. The first bikes used for descending were known as "klunkers" or "paperboy bikes": coaster brake cruisers using balloon tires first imported to America by Ignatz Schwinn.By 1979, two organizers and competitors of the Repack downhill, Charlie Kelly and Gary Fisher founded the company which named the sport, MountainBikes. As mountain biking grew enormously during the 80s, downhill riders continued to use either rigid or limited suspension travel (under 2 inches) bicycles, and purpose made downhill bikes were not made until the 90s. Some of these innovations included dual crown suspension forks and disc brakes , as well as very elaborate frame suspension designs.