The British Railways standard class 3MT 2-6-0 Mogul tender steam locomotives were designed and built at Swindon works under the oversight of R. A. Riddles, and introduced in 1954. Only 20 were built for the North Eastern and Scottish Regions and were numbered 77000 to 77019. One of the class, no. 77014 was transferred to the Southern Region late in its life.
The design was essentially a hybrid of the LMS Ivatt Class 4 with a boiler derived from those fitted to the GWR Large Prairie 2-6-2T and 5600 Class 0-6-2T tank engines. The locomotives were coal fired, had two outside cylinders, Walschaerts valve gear and were fitted with BR2A tenders.
The class was withdrawn between 1965 and 1967, none were preserved. However, some components were salvaged from scrap yards for use in the 82045 Locomotive Trust’s new class 3 2-6-2T project.
BR Standard Class 3MT 2-6-0 specification
Length: 55 ft 11¼ in (17.05 m)
Width: 8 ft 5 5/8 in (2.58 m)
Height: 13 ft 0 in (3.96m)
Gauge: 4 ft 8½ in (1.435m)
Driving wheel dia: 5 ft 3 in (1 600mm)
Boiler Pressure: 200 psi (1.38 MPa)
Cylinders: 17½ x 26 in (444 x 660mm)
Loco weight: 57 tons 9 cwt (58.372 tonnes)
Tractive effort: 21,490 lbf (95.6 kN)
Last updated 28/10/11