Czech State Rwy 2-4-2 Locomotives in Czechoslovakia

Class M 273.1 (Locobase 1640)

Data from [], last accessed 24 December 2012, supplemented by [] . Locobase 14767 describes the twenty DT 1 bi-directional locomotives delivered to the BBOe in 1935-1938. The M 273s were a slightly revised design with a larger grate that was adopted as a response to shortages in oil fuel that affected motor bus traffic.

Unlike those engines, which quickly went into branch-line service, these began by pulling trains over the 450 km (279 miles) between Slovakia's capital Bratislava and Presov. They were rated at 100 kmh (62 mph) pulling 109 tons on the level and 55-60 kmh (34-37 mph) up a 1 1/2% grade.

Cylinders were supplied through Lentz poppet valves. Like the DT 1s, their profile resembled a bi-directional diesel switcher, the typical cylindrical boiler hidden by deep water tanks and a tall, narrow skyline casing. Behind the cab was a high structure housing the coal bunker and baggage section. Both auxiliary trucks used Adams bogies.

After World War Two, all six were taken into the postwar CSD, which retired them in 1953-1954.