What a loco the T1 was! Cruising at 100mph with 1,000 tons on the hook! They were far from perfect, they slipped at speed, they broke their valves, BUT what a dramatic look and an enormous impression of power. Steam was on the wane when they were built, but what a way to go out! They were magnificent, but the diesels were all-conquering and there was nowhere for the T1 to go from there.