2-8-0 Class 7F S&DJR Profile and Models

The Somerset and Dorset Joint Railway (S&DJR) 7F 2-8-0 is a class of steam locomotive designed for hauling heavy coal and goods trains. Eleven were built in two batches in 1914 and 1925, and were used until withdrawal between 1959 and 1964. Two are preserved. The Midland Railway, joint owners of the S&DJR with the London and South Western Railway (L&SWR), were in charge of locomotive policy on the line. The S&DJR was heavily graded and required power over and above what was available from the Midland's small engines. Two plans for 0-8-0s were suggested in 1907 but would have been too heavy. Clearly a special exception to the small engine policy, James Clayton the draughtsman at Derby was given a free hand to design the engine, and produced something unlike any other Derby-designed locomotive of the time.

(Information provided via Wikipedia)

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