GWR 7800 Class 7827 Lydham Manor

4 ft 8+1⁄2 in (1,435 mm) standard gaugeLeading dia.3 ft 0 in (914 mm)Driver dia.5 ft 8 in (1,727 mm)Minimum curve6 chains (396 ft; 121 m) normal,
5 chains (330 ft; 101 m) slowWheelbaseLoco: 27 ft 1 in (8.26 m)
Loco & tender: 52 ft 1+3⁄4 in (15.89 m)Length61 ft 9+1⁄4 in (18.83 m)Width8 ft 11 in (2.718 m)Height13 ft 0 in (3.962 m)Axle load17 long tons 5 cwt (38,600 lb or 17.5 t) (19.3 short tons)Loco weight68 long tons 18 cwt (154,300 lb or 70 t) (77.2 short tons) fullTender weight40 long tons 0 cwt (89,600 lb or 40.6 t) (44.8 short tons) fullFuel typeCoalFuel capacity7 long tons 0 cwt (15,700 lb or 7.1 t) (7.8 short tons)Water cap.3,500 imp gal (16,000 L; 4,200 US gal)Firebox:​ • Grate area22.1 sq ft (2.05 m²)BoilerGWR Standard No. 14^[1]Boiler pressure225 psi (1.55 MPa)Heating surface:​ • Firebox140.0 sq ft (13.01 m²) • Tubes and flues1,285.5 sq ft (119.43 m²)Superheater:
​ • Heating area160.0 sq ft (14.86 m²)CylindersTwo, outsideCylinder size18 in × 30 in (457 mm × 762 mm)

Performance figures
Tractive effort	27,340 lbf (121.61 kN)

Career
Operators	Western Region
Class	7800 'Manor' Class
Numbers	7827
Retired	1965
Current owner	Dartmouth Steam Railway & Riverboat Company
Disposition	Preserved

Great Western Railway 7800 Class No. 7827 Lydham Manor is a preserved British steam locomotive. It is currently (March 2013) owned by and based on the Dartmouth Steam Railway.

The locomotive was built in December 1950. Its first shed allocation was at Chester. In March 1959, its shed allocation was moved to Oswestry. It conducted improved draughting tests in February 1954. In May 1965, it received its last shed allocation at Shrewsbury. No. 7827 was withdrawn in October 1965 and acquired by Woodham's of Barry, Wales, in May 1966. It was sold to Dart Valley Railway and left the scrapyard as the fifth departure from Barry in June 1970. No. 7827 was restored in 1972.

It carried the Great Western Livery, which it would never have carried while in mainline service, as it was built two years after the end of the Great Western Railway (GWR). In 2011, Lydham Manor was reintroduced at the Churston Heritage Festival carrying British Rail all-black livery and bearing the temporary nameplates Torquay Manor and number plates of No. 7800 for the festival.

Lydham Manor has been on loan to other heritage railways/centres including, Didcot Railway Centre in 2010 before it was painted in BR black, South Devon Railway in a visit for September 2013, and then traveling to West Somerset Railway in October 2013 for the steam gala festival .

First shed December 1950	March 1959	May 1965	Last Shed
Chester	Oswestry	Shrewsbury	Shrewsbury