British Rail Class 112
Encyclopedia
The Class 112 and Class 113 DMUs utilised the standard Cravens body used on Class 105s
but had a single Rolls-Royce
engine rated at 238 hp 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 (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 6.8 hp per ton. Empty, it was 8.1 hp/ton, which compared favourably with 5.7 hp/ton that the Cravens power/trailer had.
British Rail Class 105
The British Rail Class 105 diesel multiple units were built by Cravens Ltd. of Sheffield from 1956 to 1959. The class were built with a side profile identical to British Railways Mark 1 carriage stock, using the same doors and windows. None were selected for refurbishment...
but had a single Rolls-Royce
Rolls-Royce Limited
Rolls-Royce Limited was a renowned British car and, from 1914 on, aero-engine manufacturing company founded by Charles Stewart Rolls and Henry Royce on 15 March 1906 as the result of a partnership formed in 1904....
engine rated at 238 hp 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 (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
Liverpool
Liverpool is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880...
- St Helens
St Helens, Merseyside
St Helens is a large town in Merseyside, England. It is the largest settlement and administrative centre of the Metropolitan Borough of St Helens with a population of just over 100,000, part of an urban area with a total population of 176,843 at the time of the 2001 Census...
area, where the gradients in the Lancashire & Yorkshire
Lancashire and Yorkshire Railway
The Lancashire and Yorkshire Railway was a major British railway company before the 1923 Grouping. It was incorporated in 1847 from an amalgamation of several existing railways...
area required more power. Both types also spent some time working from Cricklewood
Cricklewood
Cricklewood is a district of North London, England whose northeastern part is in the London Borough of Barnet, western part is the London Borough of Brent and southeastern part is in London Borough of Camden.-History:...
.
The gross weight of a set with all seats occupied was approximately 70 tons, giving 6.8 hp per ton. Empty, it was 8.1 hp/ton, which compared favourably with 5.7 hp/ton that the Cravens power/trailer had.
Orders
| Lot No. | Diagram | Car Type | Qty | Fleet numbers | Notes |
|---|---|---|---|---|---|
| 30533 | 602 | Driving Motor Brake Third (DMBS) | 25 | 51681–51705 | Class 112 |
| 30534 | 603 | Driving Motor Composite with lavatory (DMCL) | 25 | 51706–51730 | Class 112 |
| 30535 | 604 | Driving Motor Brake Third (DMBS) | 25 | 51731–51755 | Class 113 |
| 30536 | 605 | Driving Motor Composite with lavatory (DMCL) | 25 | 51756–51780 | Class 113 |
Other technical details
- Coupling Code: Blue Square
- Transmission: Standard Mechanical (Class 112), Hydraulic (Class 113)