Thanks to Andrew Dyson for additional information.

Class 112/3 Cravens 2-car sets

Both these classes 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.

There were two batches of the cars, the first 50 (25 sets) had standard mechanical transmission via a gearbox and were allocated the TOPS Class 112.

The second batch of 50 cars (25 sets) had hydraulic transmission, and were to be TOPS Class 113s. This lot could easily be identified by the large combined 4-character headcode/destination indicator on the cab roof dome.

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.