First Radd Prototype
The first RADD prototype was developed in 1984. Based on a Honda XL600R single, Parker assembled this hand-built machine in his Santa Fe workshop with little more than a lathe and a torch. The machine was shown to the U.S. offices of the Japanese companies, and was track-tested head-to-head with a stock Yamaha SR500. Then-future World Champion Wayne Rainey hot-lapped the prototype and proclaimed the RADD bike superior to the Yamaha. As impressive as the first prototype was, it left unanswered the question of how this system would work on a fast, powerful multi-cylinder machine. John Porter, a product planner at Yamaha Motor U.S., saw potential and would be influential in the design's future.