GWR 6800 Class 6880 Betton Grange

GWR 6800 Class 6880 Betton Grange
Betton Grange in January 2025.
Type and origin
Power typeSteam
DesignerC.B. Collett (original designer)
Builder6800 Society
Build date1998–2024
Specifications
Configuration:
  Whyte4-6-0
  UIC2'C h
Gauge4 ft 8+12 in (1,435 mm)
Leading dia.3 ft 0 in (0.914 m)
Driver dia.5 ft 8 in (1.727 m)
Minimum curve8 chains (530 ft; 160 m) normal,
7 chains (460 ft; 140 m) slow
Length63 ft 0+14 in (19.21 m)
Width8 ft 11+14 in (2.72 m)
Height13 ft 0 in (3.96 m)
Axle load18 long tons 8 cwt (41,200 lb or 18.7 t)
Adhesive weight55 long tons 2 cwt (123,400 lb or 56 t)
Loco weight74 long tons 0 cwt (165,800 lb or 75.2 t) full
Tender weight40 long tons 0 cwt (89,600 lb or 40.6 t) full
Fuel typeCoal
Fuel capacity7 long tons 0 cwt (15,700 lb or 7.1 t)
Water cap.3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:
  Grate area27.07 sq ft (2.515 m2)
Boiler pressure225 psi (1.55 MPa)
Heating surface:
  Firebox154.78 sq ft (14.380 m2)
  Tubes and flues1,686.60 sq ft (156.690 m2)
  Total surface2,461.4 sq ft (228.67 m2)
Superheater:
  Heating area4-element: 191.8 sq ft (17.82 m2),
6-element: 253.38 sq ft (23.540 m2)
CylindersTwo, outside
Cylinder size18.5 in × 30 in (470 mm × 762 mm)
Performance figures
Tractive effort28,875 lbf (128.44 kN)
Career
Operators 
Power classGWR: D; BR: 5MT
Numbers6880
Official nameBetton Grange
Axle load classGWR: Red
DispositionOperational, currently based at the Llangollen Railway

GWR 6800 Class No. 6880 Betton Grange is a steam locomotive built between 1998 and 2024 as a "new-build" project, originally based on the Llangollen Railway in Denbighshire, Wales, then subsequently at Tyseley Locomotive Works. Described on the project's website as "building the 81st Grange", the project started in 1998.

The locomotive was constructed because all of the original GWR 6800 Class Grange locomotives were withdrawn for scrap by the end of 1965. The locomotive is constructed from an assemblage of original GWR and newly manufactured components.

The locomotive's completion date was plagued by a number of delays. Initially expected to be operational in 2013, the locomotive steamed for the first time in April 2024 after more than 25 years of work.