The Triumph Thunderbird was named by Edward Turner, who had stayed at the Thunderbird Motel while traveling in the US. He liked the sound of it & so named his new 650cc twin after it. The T-Bird has an interesting history amoung Triumph Motorcycles. The name has been used 3 times, the first which we will delve into here, the 6T ran from 1950 through 1966. The name was revived again in 1981 for the TR65, an entry-level bike made by destroking the Triumph Bonneville 750. And lastly, it was revived again in 1994 by the new Hinkley-based Triumph Motorcycles as the Triumph Thunderbird 900 triple.