British Rail Class 112
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Built by Cravens Ltd, Sheffield Introduced: 1960 Coupling Code: Blue Square Body: 57ft 6in x 9ft 3in Engines: Rolls Royce of 238hp Transmission: Standard Mechanical (112) Hydraulic (113)
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.
All were withdrawn by the late '60s and none survive.
[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
| British Rail diesel multiple units | ||
|---|---|---|
| Diesel locomotives - Electric locomotives - DMU - DEMU - AC EMU - DC EMU - Departmental units | ||
| First-generation diesel units | ||
| Classes: | 100 - 101 - 102 - 103 - 104 - 105 - 106 - 107 - 108 - 109 - 110 - 111 - 112 - 113 - 114 - 115 116 - 117 - 118 - 119 - 120 - 121 - 122 - 123 - 124 - 125 - 126 - 127 - 128 - 129 - 130 - 131 |
|
| Original TOPS: | 140 - 141 - 142 - 143 - 144 - 145 - 147 - 148 - 149 - 150 - 160 - 161 - 162 - 163 - 164 - 166 167 - 168 - 169 - 171 - 172 - 173 - 175 - 176 - 177 - 178 - 179 - 180 - 182 - 183 - 185 - 186 188 - 189 |
|
| Pre-TOPS: | British United Traction - Derby Lightweight - Metro-Cammell - Railbus GWR Railcars - LMS Railcars |
|
| Second-generation diesel units | ||
| Classes: | 140 - 141 - 142 - 143 - 144 - 150 - 151 - 153 - 154 - 155 - 156 - 157 - 158 - 159 - 165 - 166 168 - 170 - 171 - 175 - 180 - 185 |
|
| Diesel-electric units | ||
| Classes: | 201 - 202 - 203 - 204 - 205 - 206 - 207 - 210 - 220 - 221 - 222 - 251 - 252 - 253 - 254 - 255 | |
| SR designation: | 3D - 3H - 3R - 3T - 4L - 6B - 6L - 6S | |
| Departmental units | ||
| Classes: | 901 - 930 - 950 - 951 - 960 - APT-E - MPV | |
