One of them, 4468 Mallard, is the fastest steam locomotive ever made. It set a world speed record of 126 mph (202.7 km/h) on July 3, 1938. Six A4s still exist today. The rest were scrapped when steam stopped being used to power trains in Britain.
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READ THE ENGINEER'S ORIGINAL 1935 ARTICLE HERE. 35 Class A4 locomotives were built, remaining in service until the early 1960s. Astonishingly, Silver Link itself was broken up for scrap in 1963 and today, only six of the famous locomotives remain.
The Sir Nigel Gresley Locomotive Trust has announced that it will be working with Locomotive Services Group to overhaul and help return LNER A4 No.60019 'Bittern' back to service. This news builds on the agreement signed in 2019 to operate 60007 Sir Nigel Gresley on the mainline with LSG.
The Big Boy has the longest engine body of any reciprocating steam locomotive, longer than two 40-foot buses. They were also the heaviest reciprocating steam locomotives ever built; the combined weight of the 772,250 lb (350,290 kg) engine and 436,500 lb (198,000 kg) tender outweighed a Boeing 747.
In 1923, Flying Scotsman was the first locomotive built at the Doncaster Works by the then newly formed LNER, which also celebrates its centenary this year. City of Doncaster Council and London North Eastern Railway (LNER) hosted the special visit, with support from the National Railway Museum.
Fastest Train in the World – 357.2 MPHThe current world speed record for a commercial train on steel wheels is held by the French TGV at 574.8 km/h (357.2 mph), achieved on 3 April 2007 on the new LGV Est.
With a top speed of 126mph, the Mallard holds the record for being the fastest steam locomotive in the world. Another Gresley design, the Flying Scotsman, is an enduring achievement. When applying for planning permission, the society's trust stated: “This duck is no mere whimsy.