,

Silver streak

by

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Words: Steve Wilson
Photographs: Gary Chapman

This 1956 Thunderbird is a rolling demonstration of why these soft-tuned, iron-engined 650s were the ultimate Triumph twin for many experienced riders.

Of the three 650cc twin he owns, the Thunderbird has become Alec Taylorโ€™s favourite.

Triumphโ€™s 6T Thunderbird was held by many โ€˜in the knowโ€™ to be the all-round best of the firmโ€™s twins.

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Sales manager Ivor Davies, the late guru restorer Hughie Hancox, journalist Bruce Main-Smith and many others all considered the original iron-engine, single carb, pre-unit, 34bhp 650cc twin as tough, reliable, and the easiest to live with. As influential โ€˜alternative bikingโ€™ man Royce Creasey wrote, the Thunderbird was โ€œthe definitive feet-up chopperโ€ (Royce was involved with Feet Forward designs) โ€œand everything else was just an unfortunate attempt to make it go fasterโ€.

I had ridden early tuned T110 versions of the pre-unit 650, and been amazed by their smoothness compared with the 1963-on unit-engined big twins. But while seduced by the looks of the rigid or sprung hub, 1950-1954 6Ts with their Brando โ€˜Wild Oneโ€™ associations, I remained dubious about the swinging-arm versions introduced for the UK in 1955.

Firstly the new brazed-lug frame with its unbraced swinging-arm had started the โ€˜Triumphs-donโ€™t-handleโ€™ legend, widespread when I came to motorcycling at the beginning of the 1960s. Which was true, but with a qualification. These ones didnโ€™t handle if pushed to the limit, as they were by the emerging cult of young rockers. Journalist Dave Minton, a quick rider, recalled โ€œโ€ฆthe frame saddle-tube, on which the swinging-arm was mounted, warped like a torsion bar and gave fast cornering a horrible new meaning entirelyโ€.

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