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1922 Sun Vitesse - disc-valve pioneersThe 1922 Sun TT models with their disc-valves pre-dated the German and Japanese method of induction controlby at least three decades. From the three TT entries, two finished well behind the winners
1921 Sun Vitesse workshopThe Birmingham-based Sun Vitesse team preparing for the 250cc class of the 1921 Junior TT. Both disc-valve two strokes finished, averaging just over 37 mph after five hours of racing - and not last
A long way behind the winnerGus Kuhn with his 1922 Sun Vitesse. He finished the Lightweight race 12th, 90 minutes behind the winner, Geoff Davison (Levis), having endured over five and a half hours in the saddle!
