NER 66 Aerolite

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Aerolite (5441423284).jpg
66 Aerolite preserved in the National Railway Museum
Type and origin
Power typeSteam
 • Whyte2-2-2T, rebuilt as 4-2-2, rebuilt again as 2-2-4T
Leading dia.3 ft 7 in (1.092 m)
Driver dia.5 ft 7 34 in (1.721 m)
Trailing dia.3 ft 1 14 in (0.946 m)
Wheelbase20 ft 7 in (6.27 m)
Length32 ft 8 12 in (9.970 m)
Axle load19.5 long tons (19.8 t; 21.8 short tons)
Loco weight44.95 long tons (45.67 t; 50.34 short tons)
Fuel capacity2.5 long tons (2.5 t; 2.8 short tons)
Water cap1,620 imp gal (7,400 l; 1,950 US gal)
 • Firegrate area
11 sq ft (1.0 m2)
Boiler3 ft 9 34 in (1.162 m) diameter
Boiler pressure175 psi (1.21 MPa)
Heating surface766 sq ft (71.2 m2)
 • Tubes701 sq ft (65.1 m2)
 • Firebox65 sq ft (6.0 m2)
Cylinders2 inside (1 HP 1 LP)
High-pressure cylinder13 in × 20 in (330 mm × 508 mm)
Low-pressure cylinder18.5 in × 20 in (470 mm × 510 mm)
Valve gearStephenson
Performance figures
Tractive effort6,390 lbf (28.4 kN)
OperatorsNER, LNER
ClassLNER: X1
Official nameAerolite
DispositionStatic display

North Eastern Railway (NER) No. 66 Aerolite is a preserved British steam locomotive. It was classified X1 by the LNER.

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 well tank, side tanks were added 1886, and around this time it received the number 66.

In 1892 Aerolite was rebuilt into a 4-2-2, 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Aerolite was withdrawn in 1933 and preserved in 1934 at the LNER's York museum.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 can be seen as a static exhibit at the National Railway Museum in York.

In fiction[edit]

An engine of this type is seen in the TV Series Thomas the Tank Engine and Friends, as the character Whiff.[citation needed] The character carries the number 66 just like the engine he is based on.

External links[edit]