The DSB Class MX is a lightweight, diesel-electric locomotive built by the Swedish company Nydqist & Holm between 1960 and 1962 for the Danish State Railways

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Quick Facts Type and origin, Power type ...

DSB Class MX
Type and origin Power type Diesel-electric Builder Nydqist & Holm Build date 1960–1962 Total produced 45
Specifications Configuration: ​  • UIC (A1A)(A1A) Length 18.30 m (60 ft 0 in) Loco weight 89 t (88 long tons; 98 short tons) Cylinders V12
Performance figures Power output 1,425 hp (1,063 kW) 1,445 hp (1,078 kW) Tractive effort ca 208 kN (47,000 lbf)
Career Locale Denmark Sweden

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After having great success with the MY locos, DSB started to search for a lighter locomotive for some of the smaller stretches on which the MYs were too heavy to run.

The first unit, 1001 arrived to Denmark in 1960 and got just as popular as its big-brothers in short time - the first 20 units (1001–1020) produced 1,425 horsepower (1,063 kW) whilst the last units, 1020-1045 produced 1,445 horsepower (1,078 kW).

Many of the MXs have been sold to Danish private railways, but some have also been sold to Sweden and some other countries. In Sweden they are called TMX, as diesel locomotive class designations usually begin with T there. Informally nicknamed Gammel Dansk referring to the popular herbal liquor associated with Denmark, whilst also being a popular name as it means "Old Danish" literally translated.

• A DSB class MY (left), and a Class MX (right)
• Side view
• Several Private-Owned MX and MY in Padborg

• DSB class MY

Media related to DSB MX at Wikimedia Commons

• Jernbanesider
• Ravnsbak
• GM-nyt