ner-aerolite

NER Aerolite is one of the most unusual preserved locomotives in Britain — a unique 2-2-4T inspection saloon engine that began life in 1869 as a Robert Stephenson & Co. 2-2-2T, was comprehensively rebuilt by the North Eastern Railway in 1892 and again in 1902 to its final distinctive 2-2-4T configuration, and served for decades as the NER General Manager's personal inspection engine for travelling the NER's extensive network across Yorkshire and the North East. The 2-2-4T wheel arrangement — one pair of coupled driving wheels flanked by a single leading axle and a four-wheel trailing bogie — was unique in British practice and reflected the unusual requirements of a lightly-loaded inspection saloon that needed smooth riding rather than heavy haulage capability.

Aerolite carried the NER's senior management on inspection tours of the network, a function that demanded a comfortable, smooth-riding vehicle suitable for travelling at moderate speed with a small party of railway officials rather than the sustained high-speed performance required of the express passenger locomotives. In this unglamorous but important role the locomotive served the NER for over thirty years in its final form, witnessing the railway's peak Victorian and Edwardian prosperity from the perspective of the General Manager's saloon.

Aerolite is preserved at the National Railway Museum, York, in NER green livery, where it stands as one of the most individually distinctive vehicles in the national collection.