The first Triumph motorcycle of 1902 used a Belgian Minerva engine, but within a few years the Coventry firm - originally bicycle manufacturers - was building its own power units. By the outbreak of the Great War the marque’s reputation for quality and reliability was well-established, leading to substantial orders from the military. Triumph’s 3½hp model first appeared in 1907. Originally of 453cc, its sidevalve engine was enlarged to 476cc in 1908, and finally to 499cc in 1910 before being superseded by the 4hp model in 1914. Equipped with three-speed Sturmey-Archer gearbox, it was Triumph’s revised 4hp - the Model H - that did such sterling service in WWI, some 30,000 ‘Trusty Triumphs’ seeing action with Allied forces. Updated with chain final drive for 1920, it became known as the ‘SD’ (Spring Drive) because of its clutch-mounted, coil-spring shock absorber, and formed the basis of the later four-valve Ricardo model. Acquired by its late owner in October 2004, this Triumph SD is offered with (reproduction) sales catalogue, copy parts lists, copy instruction manual, four expired MoTs covering the period 1998-2005, Swansea V5C registration document and MoT to November 2006.
The first Triumph motorcycle of 1902 used a Belgian Minerva engine, but within a few years the Coventry firm - originally bicycle manufacturers - was building its own power units. By the outbreak of the Great War the marque’s reputation for quality and reliability was well-established, leading to substantial orders from the military. Triumph’s 3½hp model first appeared in 1907. Originally of 453cc, its sidevalve engine was enlarged to 476cc in 1908, and finally to 499cc in 1910 before being superseded by the 4hp model in 1914. Equipped with three-speed Sturmey-Archer gearbox, it was Triumph’s revised 4hp - the Model H - that did such sterling service in WWI, some 30,000 ‘Trusty Triumphs’ seeing action with Allied forces. Updated with chain final drive for 1920, it became known as the ‘SD’ (Spring Drive) because of its clutch-mounted, coil-spring shock absorber, and formed the basis of the later four-valve Ricardo model. Acquired by its late owner in October 2004, this Triumph SD is offered with (reproduction) sales catalogue, copy parts lists, copy instruction manual, four expired MoTs covering the period 1998-2005, Swansea V5C registration document and MoT to November 2006.
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