L&YR Class 27

L&YR Class 27
27 class locomotive on the East Lancashire Railway
Type and origin Power type Steam Builder L&YR, Horwich Works Build date 1889–1918 Total produced 484
Specifications Configuration: ​  • Whyte 0-6-0 Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Wheel diameter 5 ft 1 in (1.549 m) Length 48 ft 6 in (14.78 m) Loco weight 42 long tons 11 cwt (95,300 lb or 43.2 t) Total weight 69 long tons 3 cwt (154,900 lb or 70.3 t) Fuel type Coal Boiler pressure 180 psi (1.24 MPa) Cylinders Two, inside Cylinder size 18 in × 26 in (457 mm × 660 mm) Valve gear Joy valve gear Loco brake Vacuum Train brakes Vacuum
Performance figures Tractive effort 21,130 lbf (94.0 kN)
Career Operators Lancashire and Yorkshire Railway Class Class 27 Power class LMS & BR: 3F Numbers L&YR: random, LMS:12083–12467 Nicknames "A Class"

The Lancashire and Yorkshire Railway Class 27 is a class of 0-6-0 steam locomotive designed for freight work on the Lancashire and Yorkshire Railway (L&YR).

Construction and operation

L&YR Class 27 0-6-0 52095 at Rose Grove Motive Power Depot, Burnley, Lancashire, on 28 March 1959

Class 27 locomotives were designed by John Aspinall and 484 were built between 1889 - 1918 at Horwich Works. It was the standard goods engine used by the Lancashire & Yorkshire Railway. Aspinall opted for a two-cylinder format with a non superheated round top boiler. David Joy's configuration of valve gear was employed. By the time Aspinall became general manager of the L&YR on 1 July 1899 more than 400 of the simple but powerful engines had been built. More were built under his successors, Henry Hoy and George Hughes, albeit with some modifications. By 1918 there were the 484 locomotives in the class.

Superheating

Under Hughes, one of the class was subject to early experiments in superheating, the process of increasing the temperature of steam produced in the boiler so the minimum of energy was lost. After months of trials, 20 superheated engines were authorised to be built and the first of the superheated class 27s emerged from Horwich Works in 1909. The superheated 27s had the same boiler pressure as the originals, 180 psi. The first batch had round topped boilers, but in 1912 a second batch of 20 was constructed with Belpaire fireboxes.

Although the class was augmented by 60 engines between 1900 and 1909 and another ten between 1917–18, the last five built reverted to the original 1889 specification.

Ownership changes

It is a tribute to the soundness, usefulness and simple practicality of Aspinall's design that 300 of the class passed into the ownership of the London, Midland and Scottish Railway (LMS) and around 50 were operating in British Railways (BR) service in summer 1960. British Railways took ownership of 235 of the class in 1948 and renumbered them 52088-52529 (with gaps) by the addition of 40000 to their LMS numbers.

Preservation

One locomotive, 1896-built L&YR number 1300 (later LMS 12322 and BR 52322) has survived and is preserved at the Ribble Steam Railway but is currently on loan to the East Lancashire Railway.

The rebuild

The rebuild of the Class 27 was the L&YR Class 28, designed by George Hughes.

References

• Herring, Peter (2000) Classic British Steam Locomotives, Enderby: Abbeydale, p. 192, ISBN 1-86147-057-6
• Hall, Peter & Fox, Peter (2002) Preserved Locomotives of British Railways, Platform 5: Sheffield, ISBN 1-902336-30-5

External links

• Railuk database