[1] Along with fellow racer, John Dodds, he developed a motorcycle using a two-stroke outboard motor designed by Dieter König.
He and the König were the first to challenge the dominance of the MV Agustas after the departure of Honda from Grand Prix competition at the end of the 1967 season.
In contrast to his main competitors, Newcombe was credited with the distinction of developing, building, maintaining, and riding the König machine in competition.
Concerned for rider safety he approached Vernon Cooper, clerk of the course, about placing hay bales in front of the wall.
The next day, 11 August, Kim led the race for six laps before hitting the dip at Stowe, running wide off the track, and striking the wall.