Class 37

Built: 1960-1966 – English Electric at Vulcan Foundry, Newton-le-Willows or by Robert Stephenson & Hawthorns, Darlington

Engine: English Electric 12CSVT

Main generator: English Electric 822/10G

Main alternator: Brush BA1005A (fitted to Class 37/4, 37/5, 37/6, 37/7)

Main alternator: GEC G564AZ (fitted to 37796-37803)

Traction Motors: English Electric 538/A

Maximum Tractive Effort: 245kN (55,500lbf)

Brake force: 50t

Weight: 102.8-108.4t

Maximum speed: 90mph

Dimensions: 18.75x2.72m

Owners: Colas Rail, Direct Rail Services, Network Rail, Preserved, West Coast Railway

Operators: Colas Rail, DB Schenker, Direct Rail Services, Network Rail, Preservation, West Coast Railway, charters

Numbers: 37001-37308, 37401-37431, 37501-37521, 37601-612/667-699, 37701-719/796-37803/884-899, 37901-37906, 97301-97304

Caption: Colas Rail 37219 stands at Sheringham on June 13 2014, during the North Norfolk Railway’s diesel gala. RICHARD CLINNICK.