Belgian Railways Class 23

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Class 23 locomotives were part of the 1950s generation of SNCB electric locomotives that included Types 122 (later 22), 123 (later 23), 125, (later 25 and 25.5) and 140 (later 25 and 25.5) built between 1953 and 1961. There were 50 Series 122, 83 Series 123, 16 Series 125 and 6 Series 140 for a total of 155. They were seen across Belgium on passenger and freight trains until they were retired in 2012. Class 23 was later fitted for multiple working, and were often found in pairs. There was no difference in power between the classes as they all used the same traction motors and control equipment. The 23s differed from the 22s in three ways. The most visible was the ventilation grilles. Those on the Type 122 were mounted on the roof and sometimes had problems with water ingestion. This was corrected by having three grilles mounted low on each side. Six of the 23s (2306-2313-2317-2320-2321-2331) later received an extra vent on one side only, just above the existing central one. The next was additional weight was added to the chassis to increase tractive effort. The third was the 23s had regenerative braking. The reason for these differences was to let them pull heavy freight trains on the line Brussels-Luxembourg. Loco 123.083 became 124.001 in 1968 and 2401 in 1971. It received a streamlined shroud at one end only that fit over the existing bodywork. It had its own windshield, wipers, washers and headlights. It also was given the ACEC Type G transmission system with a different gear ratio to test. Another change was that the traction motors were completely suspended rather than being just nose suspended. This was all a development stage for what was to have been a four voltage electric loco of 7,000 hp (5,200...