GNR Class J9

GNR Class J9 LNER Class J7
Type and origin Power type Steam Designer Patrick Stirling Builder Doncaster Works Serial number 692–791 Build date 1896 Total produced 10 (original production) Rebuild date 1924-1926 Number rebuilt 5
Specifications Configuration: ​  •  Whyte 0-6-0  •  UIC C n2 Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 4 ft 8 in (1.422 m) Wheelbase 15 ft 6 in (4.7 m) Axle load 15.5 long tons (15.7 t) Loco weight 38.1 long tons (38.7 t) Tender weight 34.9 long tons (35.5 t) Total weight 73.0 long tons (74.2 t) Fuel type Coal Firebox: ​  • Grate area 16.25 sq ft (1.51 m2) Boiler 4 ft 5 in (1.3 m) (original) 4 ft 8 in (1.4 m) (LNER rebuilds) Boiler pressure 170 psi (1.17 MPa) Heating surface: ​  • Firebox 103 sq ft (9.6 m2)  • Tubes 1,016 sq ft (94.4 m2)  • Total surface 1,119 sq ft (104.0 m2) Cylinders Two, inside Cylinder size 17+1⁄2 in × 26 in (444 mm × 660 mm) Valve gear Stephenson valve gear Valve type Slide
Performance figures Tractive effort 20,548 lbf (91.4 kN)
Career Operators Great Northern Railway → London and North Eastern Railway Numbers GNR: 1021–1030 → LNER: 4021–4030 Withdrawn 1927–1936 Disposition All scrapped

The GNR Class J9 was a class of two-cylinder steam locomotives of the 0-6-0 wheel arrangement, built in 1896 for the Great Northern Railway.

History

The Class J9s were based on the GNR Class J10, but featured wider cabs and used a different diameter boiler. ^[1] Ten units were built in 1896, whilst later on, the Class J10s were refitted with the J9's boiler. ^[1] In GNR service, the J10s were primarily used on heavily graded lines near Leeds and Bradford, and were nicknamed the "West Riding Goods Engines". When the Great Northern Railway was merged into the new London and North Eastern Railway, seven of the original J9s were still in service, whilst three converted J10s were also transferred; both classes were renamed as the LNER Class J7. ^[1] Between 1924 and 1926, five members of the class were fitted with the 4 ft 8 in (1.4 m) diameter boilers that were also being fitted to the LNER Class J3s. ^[1] The LNER relegated the class to local traffic, and began withdrawing them in 1927. In 1936, the last remaining member of the class, No. 4027, was withdrawn from Ardsley, with no units being preserved. ^[1]

References

1. "The Stirling J7 (GNR Class J9) 0-6-0 Locomotives". The London & North Eastern Railway (LNER) Encyclopedia. Retrieved 15 July 2013.