The London and North Eastern Railway Gresley Classes A1 and A3 were 4-6-2 "Pacific" steam locomotives designed by Nigel Gresley for passenger work. They were initially intended for use on the Great Northern Railway (GNR), but became a standard design on the London and North Eastern Railway after the amalgamation of 1923.

Below are the names and numbers of the steam locomotives that comprised the LNER Gresley Classes A1 and A3, that ran on the Great Northern (GNR) and latterly the London and North Eastern Railway network.

The first two A1 Pacifics were built in the twilight years of the Great Northern Railway (GNR) and entered service in 1922. The A3 was a modification of the original A1 design, and all of the surviving A1s were eventually rebuilt as A3s. Thompson designated the remaining members of the A1 class awaiting rebuilding as the A10 Class. Genesis of ...

Later all engines were rebuilt with 19˝ cylinders and were known as A3. In 1945 the original engine was completely rebuilt by Thompson to form the A1 class prototype. The surviving A1 locomotives were then reclassified A10. Only one A10 came into BR stock (60068) and it was converted to an A3 class in December 1948.

The BVG Class A3 is a type of Kleinprofil train that was built after World War II. The smallest operationally mobile unit is the double-rail car, which consists of a control car (S-car) with a straight carriage number and a compressor car (K-car) with an odd car number.

Much is known about the exploits of Gresley’s famous ‘A3’ Pacifics, including Flying Scotsman, but far less is known about the wider impact the class had on

2022年3月6日 · The combination of engineering and beauty. The sense of personality that only steam engines have. The first to 100mph. The only survivor of 79 A1 and A3 Pacifics – the engines that pulled Britain into the superpower era. Her solo role in preserving British mainline steam in the dark years from 1963 onwards.

As the brains behind the locomotive stock of the GNR, he had commissioned a new high speed passenger locomotive class to serve the GNR's London to York main line. These became the A1 locomotive class, before a subsequent rebuild gave them the designation of the A3 class.

The London and North Eastern Railway LNER Gresley Classes A1 and A3 locomotives represented two distinct stages in the history of the British 4-6-2 "Pacific" steam locomotives designed by Nigel Gresley.

It was built as a Gresley model A1 with road number 1472, then later rebuilt as an improved A3, and through various road numbers finally designated 4472. It was one of the first Pacific designs by Sir Nigel Gresley.