British Rail Class 112
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This Class used the standard Cravens body used for Class 105s but had a single Rolls-Royce engine of 238hp per car, and they were all formed into 'power twins'- two car sets with both vehicles powered.
There were two batches built, the first 50 vehicles (25 sets) had standard mechanical transmission via a gearbox and were allocated the Class 112. The second batch of 50 cars (25 sets) had hydraulic transmission, 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 6.8hp per ton. Empty it was 8.1hp/ton, which compared favourably with 5.7hp/ton that the Cravens power/trailer had.
[edit] Technical details
- Builder: Cravens Ltd, Sheffield
- Introduced: 1960
- Coupling Code: Blue Square
- Body: 57ft 6in x 9ft 3in
- Engines: Rolls Royce of 238hp
- Transmission: Standard Mechanical (Class 112), Hydraulic (Class 113)
[edit] Preservation
All 112/3s were withdrawn by the late '60s and none survive.
There are plans to build a replica of a 2 car BR Class 112/3 diesel multiple unit for Preservation in The 2010s.
[edit] References
- The Railcar Association
- Motive Power Recognition: 3 DMUs. Colin J. Marsden
- British Railway Pictorial: First Generation DMUs. Kevin Robertson
- British Rail Fleet Survey 8: Diesel Multiple Units- The First Generation. Brian Haresnape
- A Pictorial Record of British Railways Diesel Multiple Units. Brian Golding
