GWR 4073 Class 7027 Thornbury Castle

7027 Thornbury Castle was built in August 1949. Its first shed allocation was Plymouth Laira. Its March 1959 shed allocation was Old Oak Common. Its last shed allocation was Reading. It was withdrawn in December 1963 and arrived at Woodham Brothers scrapyard in Barry, South Wales in May 1964.

GWR 7027 Thornbury Castle
7027 Thornbury Castle undergoing restoration at Weston-super-Mare, 2016
Type and origin
Power typeSteam
DesignerCharles Collett
BuilderBR Swindon Works
Build dateAugust 1949
Specifications
Configuration:
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 • Whyte4-6-0
Gauge4 ft 8 1⁄2 in (1,435 mm)
Leading dia.3 ft 2 in (0.965 m)
Driver dia.6 ft 8 1⁄2 in (2.045 m)
Length65 ft 2 in (19.86 m) over buffers
Width8 ft 11 in (2.718 m)
Height13 ft 1 in (3.988 m) (Cut back from 13 ft 4 1⁄2 in (4.077 m))
Loco weight79 long tons 17 cwt (178,900 lb or 81.1 t)
89.4 short tons full
Tender weight47 long tons 6 cwt (106,000 lb or 48.1 t)
53.0 short tons full
Fuel typeCoal
Fuel capacity6 long tons 0 cwt (13,400 lb or 6.1 t)
6 long tons 0 hundredweight (6.10 t; 6.72 short tons)
Water cap4,000 imp gal (18,000 l; 4,800 US gal)
Firebox:
 • Firegrate area		29.36 sq ft (2.728 m2)
BoilerGWR Standard Number 8
Boiler pressure225 lbf/in2 (1.55 MPa)
Heating surface:
 • Tubes		1,857.7 sq ft (172.59 m2) (Collett)
1,799.5 sq ft (167.18 m2) (Hawksworth)
 • Firebox162.7 sq ft (15.12 m2) (Collett)
163.5 sq ft (15.19 m2) (Hawksworth)
CylindersFour (two inside, two outside)
Cylinder size16 in × 26 in (406 mm × 660 mm)
Valve gearInside cylinders: Walschaerts
Outside cylinders: derived from inside cylinders via rocking bars.
Valve typePiston valves
Loco brakeVacuum
Performance figures
Maximum speed25mph - (heritage railways) 45mph - (mainline, tender first) 75mph - (mainline, chimney first)
Tractive effort31,625 lbf (140.68 kN)
Career
OperatorsBritish Railways
Power classGWR: D
BR: 7P
Axle load classGWR: Red
WithdrawnDecember 1963
Current ownerPrivate Owner
DispositionUnder restoration

Preservation

7027 was sold to the then Birmingham Railway Museum and left as the 23rd departure from Barry in August 1972. After being purchased by Pete Waterman's Transport Trust, she was stored outside the Crewe Heritage Centre in her Barry Scrapyard condition. Some parts of 7027 are currently in use on elder sibling "5043 Earl of Mount Edgcumbe" and one set of name and number plates for 7027 are mounted on a wall of the main hall of The Castle School in Thornbury, South Gloucestershire. Following the removal of Waterman's railway equipment from the former LNWR site in 2016, she was moved to Peak Rail in April 2016.

In July 2016, 7027 was purchased from the Waterman Trust for an undisclosed sum by Jon Jones-Pratt, owner of 4936 Kinlet Hall and the revived Crosville Motor Services, who plans to restore the engine to full mainline standards.[1] Restoration has started at the Crosville depot in Weston-super-Mare. In February 2018, agreement was reached between the West Somerset Railway and Jon Jones-Pratt for 7027 Thornbury Castle to be moved to Williton, to be restored there over a six year period.[2] In January 2020 no 7027 was once again sold on with plans to be restored to working order. 7027 was sold from Jon Jones-Pratt to a private individual who intends to restore the engine for use at the Great Central Railway. The engine will however now not be mainline certified on completion.[3]

References
  1. "Thornbury Castle to steam in six years". Steam Railway. 5 August 2016. Retrieved 11 August 2016.
  2. http://www.wsr.org.uk/press7feb2018.pdf
  3. https://www.railadvent.co.uk/2020/01/steam-locomotive-7027-thornbury-castle-set-for-great-central-railway-restoration.html&amp 7027 set for GCR restoration
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