NER Class 3CC
| NER Class M NER Class 3CC LNER Class D19 |
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| Type and origin | |
|---|---|
| Power type | Steam |
| Designer | Wilson Worsdell |
| Builder | NER Gateshead |
| Build date | 1893 |
| Total produced | 1 |
| Rebuild date | 1898 |
| Specifications | |
|---|---|
| Configuration: |
|
| • Whyte | 4-4-0 |
| • UIC |
New: 2′B n2v Rebuilt: 2′B n3v |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading dia. | 3 ft 7 1⁄4 in (1,099 mm) |
| Driver dia. | 7 ft 1 1⁄4 in (2,165 mm) |
| Wheelbase |
Loco: 23 ft 6 in (7.16 m) Tender: 12 ft 8 in (3.86 m) Total: 45 ft 8 3⁄4 in (13.94 m) |
| 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) |
| Total weight | 94 long tons 10 cwt (211,700 lb or 96 t) |
| Firebox: • Firegrate area |
23.4 sq ft (2.17 m2) |
| Boiler | 4 ft 6 in (1.37 m) diameter |
| Boiler pressure | 160 psi (1.10 MPa) |
| 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 | 19 in × 26 in (483 mm × 660 mm) |
| Low-pressure cylinder | 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| Withdrawn | 1930 |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.
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.
Aside from its compound expansion, the 3CC was similar to several other NER classes and they are summarised here:
On 31 March 1920, the Class 3CC locomotive was derailed at York station whilst hauling a passenger train.
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.
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