Information About2-8-4 |
| CATEGORIES ABOUT 2-8-4 | |
| locomotives by wheel arrangement | |
| 2-08-4 | |
| 1925 introductions | |
|
The equivalent UIC Classification is 1'D2'. HISTORY IN UNITED STATES In the beginning of the 20th Century , the United States Railroad Administration (USRA) was formed to manage American railroads during World War I . The USRA was a short-lived and expensive experiment in nationalization, but out of it came many standard steam locomotive designs that proved enormously successful long after the end of the war. The most successful of these types was the 2-8-2 , but American railroads soon found that a locomotive with even greater steam heating capacity was necessary. To produce more steam, one of the first experiments was to increase the size of the locomotive's Firebox , but the 2-8-2 Wheel Arrangement left locomotive designers with a limitation. The single axle trailing truck could only support so much weight from the firebox and cab of the locomotive. It was only natural to add a second trailing axle to spread the increased weight of a larger firebox over a greater surface area on the rails. Six years after the Atchison, Topeka And Santa Fe Railway experimented with the first 2-10-4 , the first 2-8-4s were built in 1925 by Lima for the Boston & Albany (B&A). The railroad's route over The Berkshires was a substantial test for the new locomotives, but the type proved its worth, outpacing the 2-8-2s already in use there. It is this mountain range that provided the name for the locomotive type, ''Berkshire''. Buoyed by the success of the demonstrations on the B&A, Lima and ALCO both sold a few hundred of the new locomotive type. The Berkshire's most substantial boost, however, came in 1934 . It was that year that the New York, Chicago And St. Louis Railroad (Nickel Plate Road) received its first Berkshires based on a new design from the Advisory Mechanical Committee (AMC) of the Van Sweringen empire. Under the Van Sweringen umbrella were the Nickel Plate Road, Erie Railroad , Chesapeake And Ohio Railway and Pere Marquette Railroad . The AMC's design generated 64,100 lbf (285 kN) of Tractive Effort and almost immediately became the standard design for subsequent Berkshires. The Erie Railroad purchased the greatest number of 2-8-4s, in all rostering 105 of this locomotive type. The last new Berkshire was built by Lima in 1949 for the Nickel Plate Road. It became the railroad's road number 779. Roster Many of America's larger railroads rostered 2-8-4s. The following table lists data on the locomotives as they were built: Preservation With the success of AMCs design, the Nickel Plate Road became synonymous with the Berkshire locomotive type. One of this class, number 765, is preserved in operating condition and is operated occasionally on the mainlines of Class I Railroad s around the United States. Another 2-8-4, Pere Marquette Railroad number 1225 , which occasionally runs in the upper Midwestern US, was used as the basis for the locomotive sounds in the 2004 movie The Polar Express . A sister engine, Pere Marquette 1223, is on display in Grand Haven, Michigan . Because 1223 provided parts in the restoration of 1225, 1223 is no longer operable. EUROPEAN 2-8-4S The heavy express locomotive class 214 (numbered as class 12 from 1938 on) was developed in Austria in 1928 and built in 13 units. It was the largest Austrian steam locomotive. In 1936 the 214.13 reached 155 Km/h , the highest speed ever attained by an Austrian steam locomotive - regular speed limit was 120 km/h. 79 units of the same type were built as class 214 in Romania . Many European railways rostered 2-8-4T large tank locomotives. In Germany, there were two classes of passenger locomotives, both built in the 1950s . Class BR65 was built in West Germany , while class BR6510 was built in East Germany . REFERENCES EXTERNAL LINKS
|
|
|