sentences:  The T100C had twin-carburettors for this year only.The first lightweight for Triumph since 1933, a 150 cc OHV Terrier T15, four-speed unit construction single with a sloping engine, was introduced in 1953.As a result, Triumph directors Turner, Bob Fearon and Alex Masters rode from Land's End to John O'Groat's for a 1,000-mile Terrier demonstration and publicity stunt – the "Gaffers' Gallop.