User:SR6900/Southern Railway Ms Class

Southern Railway's Ms Classes of steam locomotives are a series of 2-8-2 Mikados built between 1911 and 1928. The majority were built for the Southern Railway, with several being built for the Erie Railroad or were modified from 2-10-2 Santa Fe type locomotives.

Ms
The Ms class of 182 light Mikados was built from 1911-1913. These locomotives were built with 63 in drivers, 27 x cylinders, and Walschaerts valve gear. As originally delivered the locomotives had 200 psi boiler pressure and 51625 lbf of tractive effort. The class leader, 4501, is notable for its preservation and use in excursions. It is the only survivor of any of Southern's 2-8-2's.

Ms-1
The Ms-1 class of light Mikados represents the USRA Light Mikados built in 1918, and the copies of the same design built in 1923.

Ms-2
The Ms-2 class of experimental Mikado-tractors are actually a series of one 2-8-2+2-6-0 and three 2-8-2+2-8-0's. Each were modified from Ms class locomotives between 1915 and 1917. They used steam from the original Ms boiler. The locomotives were not successful and were later rebuilt back to their original forms.

Ms-3
The Ms-3 class of locomotives were a group of five light Mikados (of similar design to the Ps-3 class of 4-6-2 Pacifics) built for Southern's subsidiary, the New Orleans and North Eastern Railway.

Ms-4
The Ms-4 class of heavy Mikados were built in three orders in 1923, 1926, and 1928.

Ms-5 & Ms-6
The Ms-5 & Ms-6 classes of heavy Mikados represent the five locomotives rebuilt from Ss-1 Santa Fe type locomotives in

Ms-7
The Ms-7 class of heavy Mikados were purchased second-hand from the Erie Railroad during World War II for a temporary locomotive shortage during the war. They were subsequently sold after the war.