Background During the 1900s to early 1920s, New York Central Railroad's (NYC) roster consisted of K class
4-6-2 Pacifics, which were the primary passenger locomotives of the railroad's
Big Four,
Boston and Albany (B&A), and
Michigan Central (MC) regions at the time. But by the mid-1920s, the
Pacifics have reached their limits and were not able to keep up with the demands of longer, heavier trains and higher speeds due to the railroad's booming passenger traffic. Given NYC's
axle load limits, the
Pacifics could not be made any larger; a new locomotive type would be required to carry the larger boilers. The
Lima Locomotive Works' (LLW) conception of superpower steam as realized in the
2-8-4 Berkshire type inspired NYC
chief mechanical engineer Paul W. Kiefer to design a new six-coupled type locomotive with a significantly large
firebox supported by a 4-wheel
trailing truck. The resulting greater steaming rate ensured that such a locomotive would never run out of power at speed, a common failing of older locomotives. Applying the ideas of the freight-minded Berkshire type to the
Pacific resulted in a 4-6-4 locomotive. NYC President Patrick E. Crowley named the units
Hudsons after the
Hudson River, which divides the
New York State's
Hudson Valley and streams broadly past
New York City.
Design and construction of J-1a class Hudson No. 5200 NYC ordered prototype No. 5200 from
Alco and subjected it to intensive testing around 1927. A fleet of 205 J-1 class
Hudsons were eventually built, including 30 each for the
Michigan Central Railroad (MC road numbers 8200-8229) and the
Cleveland, Cincinnati, Chicago & St. Louis Railway ("Big Four" - road numbers 6600-6629). In addition, NYC subsidiary
Boston & Albany Railroad ordered 20 J-2 class (B&A road numbers 600-619), the latter 10 from Lima Locomotive Works (all other NYC Hudsons were built by Alco's Schenectady works). A later development were 50 J-3a class
Super Hudsons in 1937–1938, with many modern appliances and innovations. After the MC, Big 4, and B&A locomotives were incorporated into the NYC numbering, the NYC Hudson locomotives had road numbers ranging from 5200 to 5474. The NYC J-1 road numbers were 5200-5344, the MC J-1s became NYC 5345-5374, the Big 4 J-1s became NYC 5375-5404, the J-2s (all from B&A) became NYC road numbers 5455-5474, and the J-3 road numbers were 5405-5454. The J-2 numbers are last because they were transferred to the NYC after the J-3 deliveries.
Streamlining The
Hudsons were of excellent quality. In response to the styling sensation of the new diesel-powered
Zephyr streamliner, Locomotive No. 5344 (the last J-1e) was fitted with an Art Deco streamlined shroud designed by Carl F. Kantola and was named
Commodore Vanderbilt on December 27, 1934. The streamlining was later replaced to match the last ten J-3a
Super Hudson locomotives (5445-5454) that had been built with streamlining designed by
Henry Dreyfuss. J-1e Hudson #5344 stuck out from the rest of the roster, as it was the only J-1 to be streamlined, and was one of two locomotives ever to be streamlined twice (the other being a
Baltimore and Ohio P-7, number 5304). Two more J-3a locomotives (5426 & 5429) had a 3rd streamlining style fitted in 1941 for
Empire State Express service. The streamlined locomotives featured prominently in NYC advertising. The forte of all
Hudsons was power at top speed. They were poor performers at low speed and the presence of a
booster engine on the trailing truck was an absolute necessity for starting. For this reason, they were generally favored by railroads with flat terrain and straight routes. After the NYC, the Milwaukee Road was also fond of the
Hudsons, acquiring 22
class F6 and six streamlined
class F7s. The
Atchison, Topeka & Santa Fe Railway also had 16, while the
New York, New Haven & Hartford Railroad had 10 (#1400-1409) streamlined I-5 4-6-4s built by Baldwin in 1937, nicknamed "Shoreliners." A booster was prone to troubles, however, and gradually fell out of favor. Instead of a complicated booster, it was deemed preferential to have an extra pair of driving wheels, and thus better traction. ==Accidents and incidents==