NER Class T3 (LNER Q7) 0-8-0

The NER Class T3, classified LNER Q7 from 1923, was a small fleet of eight 3-cylinder 0-8-0 heavy mineral steam locomotives designed by Sir Vincent Raven for the North Eastern Railway. Built at Darlington Works between 1919 and 1924, they were the most powerful 0-8-0 ever to run on the NER or LNER, designed for the heaviest of the heavy mineral trains from the Durham coalfields to the Tees and Tyne docks. One has survived into preservation as part of the National Collection.

Raven became chief mechanical engineer of the NER in 1910, succeeding Wilson Worsdell. Raven inherited Worsdell's recently-designed Q6 (T2) 0-8-0 heavy mineral engine and pushed the design forward. By 1919 the NER's coal traffic had grown to the point where even more powerful heavy mineral engines were required for the longest trains. The Q7 was Raven's answer: a three-cylinder development of the Q6 with the same general arrangement but three cylinders rather than two. The third cylinder gave the class substantially more tractive effort (around 37,000 lbf compared to the Q6's 28,800 lbf) and smoother running at low speeds.

Only eight engines were built. The small production was a result of the changing economics of British heavy freight: the LNER from 1923 was less keen on three-cylinder freight engines (which were more complex and more expensive to maintain), and the company concentrated production on the simpler Q6 instead. The Q7 became a small but distinguished fleet of heavy mineral engines, kept on the heaviest work for which their tractive effort was justified.

The class spent its working life on the heaviest North-Eastern mineral trains. They were a familiar sight at Tyne Dock and West Hartlepool, where their pulling power made them invaluable for the longest and heaviest coal trains. The Q7 outlasted many other LNER heavy freight types in regular service and continued to work mineral trains through to the late 1950s. Withdrawals began in 1962 with the BR diesel programme reaching the North Eastern Region. The last Q7 in regular service was 63460 itself, withdrawn from Tyne Dock in December 1962 and selected for preservation.

The preserved 901 (originally NER 901, later LNER 3460, BR 63460) is currently displayed at the National Railway Museum in York in NER plain black livery. It is one of only a handful of preserved three-cylinder 0-8-0 engines anywhere in the world, and the only preserved heavy mineral engine of any kind that ran on the NER. Visitors to the NRM can see the engine's extraordinary mass and the visually distinctive three-cylinder front-end arrangement, an authentic piece of NER heavy freight engineering preserved as a representative of the era when British coal traffic was at its peak.

Design and development

Sir Vincent Raven became chief mechanical engineer of the North Eastern Railway in 1910, succeeding Wilson Worsdell. Raven inherited Worsdell's recently-designed Q6 (T2) heavy mineral 0-8-0 and pushed the design forward. By 1919 the NER's coal traffic had grown to the point where even more powerful heavy mineral engines were required for the longest trains.

The Q7 was Raven's answer: a three-cylinder development of the Q6, with the same general arrangement but with three cylinders rather than two. The third cylinder gave the class substantially more tractive effort (around 37,000 lbf compared to the Q6's 28,800 lbf), and the three-cylinder layout gave smoother running at low speeds where the Q6 could feel a little harsh.

Eight engines were built at Darlington Works between 1919 and 1924. The small production was a result of the changing economics of British heavy freight: the LNER from 1923 was less keen on three-cylinder freight engines (which were more complex and more expensive to maintain), and the company concentrated production on the simpler Q6 instead. The Q7 became a small but distinguished fleet of heavy mineral engines, kept on the heaviest work for which their tractive effort was justified.

Service and withdrawals

The Q7s spent their working lives on the heaviest North-Eastern mineral trains. They were a familiar sight at Tyne Dock and West Hartlepool, where their pulling power made them invaluable for the longest and heaviest coal trains. The class outlasted many other LNER heavy freight types in regular service and continued to work mineral trains through to the late 1950s.

Withdrawals began in 1962 with the BR diesel programme reaching the North Eastern Region. The last Q7 in regular service was 63460 itself, withdrawn from Tyne Dock in December 1962 and selected for preservation. The other seven engines were scrapped at Darlington and at Cohen's yard during the early 1960s.

Identification features

A heavy, purposeful 0-8-0 with a tall stovepipe chimney, a Belpaire firebox, and the visually-distinctive bunching of three cylinders at the front (compared to the two cylinders of the related Q6). The class was visibly the heaviest 0-8-0 to run on the LNER and was instantly recognisable by its bulk.

Numbers and names

NER901–908 renumbered
  1. 901
  2. 902
  3. 903
  4. 904
  5. 905
  6. 906
  7. 907
  8. 908
NER3460–3467 renumbered
  1. 3460
  2. 3461
  3. 3462
  4. 3463
  5. 3464
  6. 3465
  7. 3466
  8. 3467
LNER3460–3467
  1. 3460
  2. 3461
  3. 3462
  4. 3463
  5. 3464
  6. 3465
  7. 3466
  8. 3467
BR63460–63467
  1. 63460
  2. 63461
  3. 63462
  4. 63463
  5. 63464
  6. 63465
  7. 63466
  8. 63467

NER 901 to 908 (later renumbered 3460 to 3467 by the LNER from 1923, then 3460 to 3467 in the 1946 LNER scheme). British Railways from 1948 added 60000 to give 63460 to 63467. The preserved engine 901 (NRM number) carried the running number 901 in NER service and 63460 in BR service. Only eight were built, making the class one of the smallest fleets of any British heavy freight type.

Notable locomotives

901 (later 3460, 63460) is the surviving Q7. Built at Darlington Works in 1919 as the prototype of the class, it spent its entire working life on heavy mineral work in the North Eastern coalfields. After withdrawal in December 1962 it was selected for the National Collection on the recommendation of the LNER's preservation history, and is currently displayed at the National Railway Museum in York. It has been kept in static display condition for many years and has not been steamed in preservation.

The class numbered only eight engines and was always small, but its three-cylinder design and its impressive tractive effort made it the most powerful 0-8-0 to run on the LNER. The Q7 was effectively the answer to the question "how much can you get out of a North-Eastern 0-8-0?" and the answer was nearly 37,000 lbf.

Allocations and regions

The eight engines were allocated overwhelmingly to the heaviest mineral depots: Tyne Dock, West Hartlepool, Heaton, and (briefly) Sunderland Borough Gardens. They worked the heaviest North-Eastern coal trains and the heaviest export traffic from the Durham collieries. The small fleet meant that the class never spread beyond the original allocation territories, and they were a familiar sight only at Tyne Dock and West Hartlepool throughout their working lives.

Livery history

The class was painted from new in NER plain black, with NER white-lined-out cabsides. The LNER from 1923 painted the class in plain black with the LNER company crest. British Railways from 1948 painted the survivors in plain unlined black with the early lion-and-wheel emblem; from 1956 the late ferret-and-dartboard crest. The preserved 901 has been kept in NER plain black throughout its preservation career.