British Rail Class D2/7

British Rail Class D2/7 was a locomotive commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period. It was built by Hudswell Clarke with a Gardner engine. The mechanical transmission, used a scoop control fluid coupling and a three-speed "Power-flow SSS" (synchro-self-shifting) gearbox. This type of gearbox was a Hudswell Clarke speciality.
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