NER Class 3CC

NER Class M
NER Class 3CC
LNER Class D19

Type and origin Power type Steam Designer Wilson Worsdell Builder NER Gateshead Build date 1893 Total produced 1 Rebuild date 1898

Specifications Configuration 4-4-0 UIC class New: 2′B n2v Rebuilt: 2′B n3v Gauge 4 ft 8 1⁄2 in (1,435 mm) Leading dia Driver diameter Wheelbase Loco: 23 ft 6 in (7.16 m) Tender: 12 ft 8 in (3.86 m) Total: Axle load 20 long tons 0 cwt (44,800 lb or 20.3 t) Loco weight 53 long tons 6 cwt (119,400 lb or 54.2 t) Tender weight 41 long tons 4 cwt (92,300 lb or 41.9 t) Loco & tender weight 94 long tons 10 cwt (211,700 lb or 96 t) Boiler 4 ft 6 in (1.37 m) diameter Boiler pressure 160 psi (1.10 MPa) Firegrate area 23.4 sq ft (2.17 m2) Heating surface 1,290 sq ft (120 m2)  • Tubes 1,170 sq ft (109 m2)  • Firebox 120 sq ft (11 m2) Cylinders Three: one inside high-pressure; two outside low-pressure High-pressure cylinder size 19 in × 26 in (483 mm × 660 mm) Low-pressure cylinder size 22 in × 26 in (559 mm × 660 mm) Valve gear Stephenson

Performance figures Tractive effort 14,504 lbf (64.52 kN)

Career Operators NER » LNER Numbers 1619 Withdrawn 1930 Disposition Scrapped

The NER Class 3CC (LNER Class D19) was a 4-4-0 steam locomotive designed by Wilson Worsdell for the North Eastern Railway and built in 1893. Only one was built (number 1619) and it was a compound expansion version of the simple expansion NER Class M1. The 3CC was originally classified M but was re-classified 3CC in 1914, at the same time as the M1 was re-classified M.

Overview

Number 1619 was built as a Worsdell-von Borries compound with two inside cylinders. In 1898, it was rebuilt as a three-cylinder compound with one inside high-pressure cylinder and two outside low-pressure cylinders, as a test-bed for the development of Walter Mackersie Smith's ideas.

Classification

Aside from its compound expansion, the 3CC was similar to several other NER classes and they are summarised here:

Original NER class	1914 NER class	LNER Class	Cylinders	Driving wheels
M1	M	D17/1	(2) 19″ x 26″	7′ 1¼″
Q	—	D17/2	(2) 19½″ x 26″	7′ 1¼″
Q1	—	D18	(2) 19½″ x 26″	7′ 7¼″
M (new)	—	—	HP (1) 20″ x 26″ LP (1) 28″ x 26″	7′ 1¼″
M (1898)	3CC	D19	HP (1) 19″ x 26″ LP (2) 20″ x 26″	7′ 1¼″

• HP = high pressure cylinder, LP = low pressure cylinders

Accident

On 31 March 1920, the Class 3CC locomotive was derailed at York station whilst hauling a passenger train.

Legacy

Number 1619 was a one-off but W. M. Smith went on to develop a four-cylinder compound system in the NER Class 4CC (LNER Class C8) 4-4-2 locomotive. Number 1619 was withdrawn in 1930 and was not preserved.

Smith's three-cylinder compound system was also used in the Great Central Railway classes 8D and 8E (LNER Class C5) 4-4-2s and achieved its greatest success in the Midland Railway 1000 Class and the LMS Compound 4-4-0. The Great Northern Railway (Ireland)'s class V was also a Smith compound.

References

Source

External links

• LNER Encyclopedia