NCC Class Y
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| Type and origin | |
|---|---|
| Power type | Steam |
| Builder |
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| Build date |
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| Specifications | |
|---|---|
| Configuration: |
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| • Whyte | 0-6-0T |
| Gauge | 5 ft 3 in (1,600 mm) |
| Driver dia. | 4 ft 7 in (1.397 m) |
| Wheelbase | 16 ft 6 in (5.03 m) |
| Length | 31 ft 4 3⁄4 in (9.57 m) |
| Width | 8 ft 9 in (2.67 m) |
| Height | 12 ft 6 7⁄8 in (3.83 m) |
| Axle load | 14 long tons 3 cwt (31,700 lb or 14.4 t) + 17 long tons 14 cwt (39,600 lb or 18 t) + 17 long tons 13 cwt (39,500 lb or 17.9 t) |
| Loco weight | 49 long tons 10 cwt (110,900 lb or 50.3 t) (110,900 lb or 50.3 t) |
| Fuel type | Coal |
| Fuel capacity | 2.25 long tons (2.29 t; 2.52 short tons) |
| Water cap | 1,200 imp gal (5,500 l; 1,400 US gal) |
| Boiler pressure | 160 psi (1,103.2 kPa) |
| Heating surface | 1,064.5 sq ft (98.90 m2) |
| • Tubes | 967.5 sq ft (89.88 m2) |
| • Firebox | 97 sq ft (9.0 m2) |
| Cylinders | Two, inside |
| Cylinder size | 18 in × 26 in (457 mm × 660 mm) |
| Valve gear | Stephenson link |
| Train brakes | Automatic vacuum |
| Performance figures | |
|---|---|
| Tractive effort | 20,830 lbf (92.7 kN) |
| Factor of adh. | 5.32 |
| Career | |
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| Operators | |
| Number in class | 2 |
| Numbers | 18, 19 |
| Scrapped |
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The LMS Northern Counties Committee (NCC) Class Y was a class of 0-6-0T steam locomotives formed when two LMS Fowler Class 3F engines (Nos.7456 and 7553) were regauged from 4 ft 8 1⁄2 in (1,435 mm) standard gauge to the 5 ft 3 in (1,600 mm) Irish broad gauge in 1944 becoming NCC Nos.18 and 19.
During World War II, the NCC was very short of shunting motive power and as no new engines were available, three engines were transferred from the Dundalk, Newry and Greenore Railway (DNGR). The DNGR engines were not a success and the NCC turned to the parent LMS for help. They offered two standard LMS Fowler Class 3F 0-6-0T locomotives.
These engines had been developed from S. W. Johnson's Midland Railway locomotives introduced in 1899. Johnson's locomotives were originally built with round-topped fireboxes but they were all rebuilt with Belpaire fireboxes from 1919.
Developed by Sir Henry Fowler for the LMS and introduced in 1924 the new locomotives had a Belpaire firebox from new, wider side tanks, larger bunker and an extended smokebox. A ventilator was also fitted in the cab roof. This class became the LMS "standard" shunting locomotive. With the exception of a batch of 15 locomotives which were built by the former Lancashire and Yorkshire Railway workshops at Horwich, Lancashire, all were built by outside contractors.
NCC No.18, originally LMS No. 16539, was part of a batch of 15, numbered from 16535–16549, built by W. G. Bagnall & Co. of Stafford in 1926/7. In the LMS 1934 renumbering scheme it became No.7456.
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