NER Dynamometer Car

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The NER Dynamometer Car behind 6990 Witherslack Hall during the 1948 Locomotive Exchange Trials Marylebone station geograph-2498878-by-Ben-Brooksbank.jpg
The NER Dynamometer Car behind 6990 Witherslack Hall during the 1948 Locomotive Exchange Trials
NER Dynamometer car at the National Railway Museum North Eastern Railway Dynamometer Car National Railway Museum York Object Number 1975-7050.jpg
NER Dynamometer car at the National Railway Museum

The North Eastern Railway Dynamometer Car is a preserved railway dynamometer car. Built in 1906 by the North Eastern Railway (NER) at Darlington Works, its role was to scientifically measure the performance of trains in order to effect improvements. It initially ran as number 3591 and was painted in the NER's Crimson Lake livery [1] .

In 1923 it was included in the acquisition of the NER by the LNER, and used extensively by Chief Engineer Nigel Gresley. In 1924 it was renumbered as 3591Y and painted in a lined imitation teak finish. In 1928 it was updated with Gresley's design of bogies and renumbered 23591. In 1938 it was used to record world record high speed runs on the East Coast Main Line behind 4468 Mallard. [2] [3] Post war it was renumbered 902502. It was used in the 1948 Locomotive Exchange Trials by British Railways, and in late 1948 was repainted and renumbered as E902502, still with the imitation teak finish, but unlined. [4]

Its last use was in 1951, and was prepared for display at the Museum of British Transport in Clapham. It largely retains its British Railways paint but with the lettering and numbering altered to their post-war condition.

Part of the National Collection, it is preserved at the National Railway Museum in York. [5]

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<span class="mw-page-title-main">1948 Locomotive Exchange Trials</span>

The 1948 Locomotive Exchange Trials were organised by the newly nationalised British Railways (BR). Locomotives from the former "Big Four" constituent companies were transferred to and worked on other regions. Officially, these comparisons were to identify the best qualities of the four different schools of thought of locomotive design so that they could be used in the planned BR standard designs. However, the testing had little scientific rigour, and political influence meant that LMS practice was largely followed by the new standard designs regardless. However, the trials were useful publicity for BR to show the unity of the new British Railways. To record the locomotive performances, one of three dynamometer cars were included in the train directly behind the locomotive.

The London and North Eastern Railway (LNER) inherited several styles of coaching stock from its constituents. Sir Nigel Gresley continued the styles that he had established pre-grouping at the Great Northern Railway (GNR) and for the East Coast Joint Stock.

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References

  1. "NER Dynamometer Car - Page 6 - The LNER Encyclopedia". www.lner.info.
  2. Mallard 75 National Railway Museum
  3. Mallard and the Railway World Speed Record The History Press
  4. Banks, Steve. "LNER Dynamometer Car". steve-banks.org. Retrieved 9 September 2023.
  5. North Eastern Railway Dynamometer Car Science Museum Group