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S15 Class


The third of Robert Urie's 4-6-0 designs for the LSWR and similar in appearance to the N15 class, the S15 shared many of its two predecessor’s components, such as in the boiler, cylinder, valve gear and tender designs. The only major difference in design for the S15 came in the smaller diameter of the driving wheels, this gave better traction, which was essential for the S15s anticipated heavy freight workings to the south coast ports.

More information on the development of the S15 Class can be found on The Engine Shed. 


Archive image courtesy Ben Brooksbank/Creative Commons


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