British Rail Classes 112 and 113


The Class 112 and Class 113 DMUs used the standard Cravens body used on Class 105s but had a single Rolls-Royce C8NFLH engine rated at per car, all of which formed into 'power twins' – two car sets with both vehicles powered.
There were two batches built, the first 50 vehicles had standard mechanical transmission via a gearbox and were allocated the Class 112. The second batch of 50 cars had hydraulic transmissions, and became Class 113s.
The cars were built for services in the LMR Central Division and in the Liverpool - St Helens area, where the gradients in the Lancashire & Yorkshire area required more power. Both types also spent some time working from Cricklewood.
The gross weight of a set with all seats occupied was approximately 70 tons, giving per ton. Empty, it was 8.1 hp/ton, which compared favourably with 5.7 hp/ton that the Cravens power/trailer had.

Orders

Other technical details

  • Coupling Code: Blue Square
  • Transmission: Standard Mechanical, Hydraulic

    Withdrawal

The first withdrawal was M51780 in February 1962. Four more cars were withdrawn in 1964, 1966 and 1967. General withdrawal of class 112 began in November 1968 – 29 cars were withdrawn that month, and was completed in November the following year. General withdrawal of class 113 began in February 1969, and was completed in July the same year. Some were cut up at BR workshops such as Derby and Doncaster, but most were sold to scrap merchants. The last of these were broken up in 1971, although two units survivied in industrial use until 1982. None were preserved.

Further Use

By 1973, two units, M51692 and M51691, where in use by British Steel at Shotton Works on Deeside. Here they were renumbered PERMINANT WAY 1 and PERMINANT WAY 2. They were used as mobile work vans by the permanent way staff and were not self-propelled, having their engines removed. They were last noted on site derelict in September 1982.