Triumph 1979 T 140 “Bonneville” 744 cc OHV twin frame & engine # T140EKA13014 The Bonneville owes its creation to the 1937 Triumph Speed Twin, designed by Edward Turner. This breakthrough design served as a blueprint for future classic British motorbikes. Public demand for more power increased every year and in 1949, Turner upgraded the bike to become the 1950 6T Thunderbird. During the 1950s, Triumph racked up a number of victories on the Bonneville Salt Flats in the US. For example, in 1955, J ...
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