NER 66 Aerolite

North Eastern Railway (NER) No. 66 Aerolite is a preserved British steam locomotive. It was classified X1 by the LNER. It was capable of reaching 55 mph (89 km/h).

NER 66 Aerolite
66 Aerolite preserved at National Railway Museum
Type and origin Power type Steam Builder Gateshead works Build date 1869 Total produced 1 Rebuild date 1892, 1902
Specifications Configuration: ​  • Whyte 2-2-2T, rebuilt as 4-2-2T, rebuilt again as 2-2-4T Leading dia. 3 ft 7 in (1.092 m) Driver dia. 5 ft 7+3⁄4 in (1.721 m) Trailing dia. 3 ft 1+1⁄4 in (0.946 m) Wheelbase 20 ft 7 in (6.27 m) Length 32 ft 8+1⁄2 in (9.970 m) Axle load 19.5 long tons (19.8 t; 21.8 short tons) Loco weight 2-2-2T: 37.0 long tons (37.6 t; 41.4 short tons) 4-2-2T: 38.15 long tons (38.76 t; 42.73 short tons) 2-2-4T: 44.10 long tons (44.81 t; 49.39 short tons) Fuel capacity 2.5 long tons (2.5 t; 2.8 short tons) Water cap. 1,620 imp gal (7,400 L; 1,950 US gal) Firebox: ​  • Grate area 11 sq ft (1.0 m2) Boiler 3 ft 9+3⁄4 in (1.162 m) diameter Boiler pressure 175 psi (1.21 MPa) Heating surface: ​  • Firebox 65 sq ft (6.0 m2)  • Tubes 701 sq ft (65.1 m2)  • Total surface 766 sq ft (71.2 m2) Cylinders 2 inside (1 HP 1 LP) High-pressure cylinder 13 in × 20 in (330 mm × 508 mm) Low-pressure cylinder 18.5 in × 20 in (470 mm × 510 mm) Valve gear Stephenson
Performance figures Tractive effort 6,390 lbf (28.4 kN)
Career Operators NER, LNER Class LNER: X1 Numbers 66 Official name Aerolite Retired 1933 Disposition Static display

History

Aerolite was built in 1869 as a replacement for an engine of the same name built by Kitson's for the Great Exhibition in 1851 and which was destroyed in a collision in 1868. The engine, like its predecessor, was used to haul the Mechanical Engineer's saloon. Originally a 2-2-2WT, side tanks were added 1886, and around this time it received the number 66.

In 1892 Aerolite was rebuilt into a 4-2-2T, destroying much of the original engine. The well tank was removed, the side tanks expanded, and the two-cylinder Worsdell-von Borries compounding system applied. In 1902 it was again rebuilt into a 2-2-4T.

Aerolite was withdrawn in 1933 and preserved in 1934 at the LNER's York museum. It was moved to Shildon Locomotion Museum from National Railway Museum in 2023 due to renovations at an engine shed. It is a static exhibit at Shildon Locomotion Museum in Shildon, County Durham as of 2024.

In popular culture

Aerolite is the basis for the Thomas & Friends character Whiff, an industrial rubbish engine whose job is to shunt rubbish to the Sodor rubbish dump.

References

• Baxter, Bertram (1986). Baxter, David (ed.). British Locomotive Catalogue 1825–1923, Volume 5A: North Eastern Railway, Hull and Barnsley Railway. Ashbourne, Derbyshire: Moorland Publishing Company. p. 125. ISBN 0-903485-54-0.

External links

• The Wilson Worsdell X1 2-2-4T Locomotive 'Aerolite' LNER Encyclopedia