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![]() Plymouth CR-8 centercab diesel locomotive of BART | |||||||||||||||||
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Sources: [17] *Data refers to Vietnamese locos unless noted. [n 4] ‡ General data |
The Plymouth CR-8 was a class of 4-axle B'B' centre cab locomotive, built by Plymouth Locomotive Works, USA
Several locomotives of type CR-8 have been used in the USA on industrial sites.
Ten units (CR-8b) were briefly operated in Thailand in the mid-1960s. During the Vietnam War the units were operated by the US Army in South Vietnam, and after the end of the war became the property of the Vietnam Railways as class D10H.
A second class of Chinese-built locomotives of type DFH21 have operated as the type D10H on the railways of Vietnam from around 1980 onwards.
The general design of a CR-8 locomotive was available in weights from 45 to 65 short tons (40 to 58 long tons; 41 to 59 metric tons) with installed power ranging from 400 to 1,000 horsepower (300 to 750 kW), using twin engines with hydraulic transmission via a cardan shaft final drive, in gauges from 3 ft (914 mm) to 5 ft 6 in (1,676 mm). [9]
The locomotives used in Vietnam were built by the Plymouth Locomotive Works, USA in the 1960s using two General Motors 12V71 two stroke V12 engines. [17] They were in 1,000 mm (3 ft 3+3⁄8 in) gauge.
The locomotives were originally thought to have been operated on the Royal State Railways of Siam (RSR) as numbers 2001-2010 beginning in 1963 or 1964. [17] [n 1] The locomotives were transferred to South Vietnam in the late 1960s during the period of US involvement in the Vietnam War, and operated as numbers 1988 to 1997 by the US Army. After the end of the Vietnam War in 1975 the class were renumbered as D10H numbers 31 to 40 by the Vietnam Railways. [17]
Several similar units were operated in the US by industrial operators, as well as MBTA and BART. A higher weight class, the CR-8XT, [n 5] was operated by companies including Bethlehem Steel and the Jones and Laughlin Steel Company. [3]
Owner | Variant | Qty. | Numbers | Notes |
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State Railway of Thailand | CR-8 | 10 | 2001-2010 | Metre gauge; later to US Army as 1988-1997; [n 3] later used by Vietnam Railways as class D10 locomotives 31-40; presumed scrapped. |
Bay Area Rapid Transit | 2 | 5000, 5013 | Built to 5 ft 6 in (1,676 mm) gauge; 5000 originally built in 1971 as L-1, and 5013 built in 1979; in service on maintenance-of-way trains. | |
Massachusetts Bay Transportation Authority | 1 | 04443 | In use for maintenance-of-way trains on the Red Line of the MBTA subway. | |
Maryland Transit Administration | 1 | 801 | Formerly used to tow broken-down light rail vehicles the Baltimore Light RailLink, now used on the Baltimore Metro SubwayLink. [6] | |
Martin-Marietta | 1 | 47-0050 | Built in 1981 (serial number 7347) and formerly used in Woodville, Ohio; now owned by Stoneco and numbered 40.0001. [3] | |
Kaiser Sand and Gravel | 1 | 3707 | Built 1969 for various industrial operations in California, including in Radum and the Permanente Quarry. [3] | |
Jones & Laughlin Steel | CR-8XT | 2 | 37-38 | 37 built in 1967, and 38 built in 1975. Used in Aliquippa, PA. 37 later sold to LTV Steel. [3] |
Bethlehem Steel | 1 | 71 | Built 1963 for use in Bethlehem, Pennsylvania, later renumbered 30 for use in Lackawanna, New York. [3] | |
Sungshin Cement | 2 | 6, 7 | Built in 1992 and 1993 [3] for use on an industrial railroad in North Chungcheong Province, South Korea; used to haul cement and coal to Korail's Dodam junction [7] [8] |
In the USA, the different variants of the CR-8 were used by different industrial companies with heavy loads to be moved. Parallel to the CR-8, the manufacturer offered the CR-8XT, where XT stood for "eXTra Tonnage, eXTra Power, eXTra Performance". This was offered with weights between 70 and 120 short tons and also had two engines with a total of between 650 and 1,400 hp.
04443 - 50 ton, 700 HP Diesel Locomotive - Plymouth - 1987
Unit 801 became a Camden fixture after catenary icing during January 1994 stranded passengers on the long bridge across the Middle Branch of the Patapsco River
That's the rapid transit division's work locomotive 04443. Lives at the Red Line maint[enance] facility at Cabot Yard [...] 50-ton, 700 HP, built 1987 by Plymouth.
Plymouth, located in the Ohio city of the same name [..] has just delivered ten of its model CR8-S diesel-hydraulic locomotives to the US Army Aviation and Surface Material Command for undisclosed foreign service.