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LNER A3 Class (Flying Scotsman)

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description LNER A3 Class (Flying Scotsman) Overview

The LNER A3 was a class of 4-6-2 Pacific steam locomotives designed by Nigel Gresley for the London and North Eastern Railway. An evolution of the earlier A1 class, they featured higher boiler pressure and improved steam flow for express passenger work. The class includes the famous locomotive No. 4472 "Flying Scotsman," which became the first steam locomotive to be officially authenticated at a speed of 100 mph in 1934.

They remained in service until the early 1960s.

help LNER A3 Class (Flying Scotsman) FAQ

What is the difference between the LNER A1 and A3 classes?

The A3 class was an evolution of the earlier A1 class, designed by Sir Nigel Gresley for the London and North Eastern Railway. The primary upgrades included a higher boiler pressure and improved steam flow, which significantly boosted their express passenger performance.

Why is the LNER A3 class famous?

The class is incredibly famous because it includes the locomotive "Flying Scotsman" (No. 4472). Flying Scotsman became the first steam locomotive to officially be recorded reaching 100 miles per hour in 1934.

What was the wheel arrangement of the Flying Scotsman's A3 class?

The LNER A3 class featured a 4-6-2 "Pacific" wheel arrangement. This design distributed the heavy weight of the large boiler and provided a smooth, stable ride for high-speed express passenger services.

When was the Flying Scotsman, the most famous A3, built?

The Flying Scotsman was built in 1923 at the Doncaster Works. It was originally numbered 1472 before being renumbered to 4472 by the London and North Eastern Railway.

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