New York Central / Pittsburgh & Lake Erie Other Articulated Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class NB-1a (Locobase 14993)

Data from NYC 8 - 1917 Locomotives Diagrams. (Thanks to Chris Hohl for his 5 May 2017 email noting the class ID and correcting the tender's water capacity and engine's cylinder stroke.) Works number was 54238 in December 1913.

The LP cylinders, which drove the front engine set, used double-ported slide valves while the HP cylinders were supplied through 12" (305 mm) piston valves. At some point, the 1300's firebox received a Gaines firebrick arch. This single locomotive pushed passenger trains up the hill west of Albany.

The 1300 was retired in March 1932.


Class NU-1a/c/e (Locobase 5584)

Data from the 1930 guide to Dimensions and Classifications of Locomotives seen on http://www.rr-fallenflags.org/nyc/nyc-lb30.html (May 2003). Works numbers were 55908-55912,

55999 in July 1916 and 62368-62370 in January 1921.

These were among the very few articulated locomotives operated on the New York Central lines. They use 14" (356 mm) piston valves to admit steam to the HP cylinders and Allen-Richardson balanced slide valves for the LP cylinders. The firebox had a Gaines firebrick arch with arch tubes.

This particular design worked as hump yard pushers; similar engines operated on the Pittsburgh & Lake Erie (2) and Michigan Central (2).


Class NU-1b (Locobase 13995)

Data from the 1930 guide to Dimensions and Classifications of Locomotives seen on http://www.rr-fallenflags.org/nyc/nyc-lb30.html (May 2003). (Thanks to Chris Hohl for his 7 March 2012 email noting the absence of these P&LE engines, which prompted creation of this entry.) Works numbers were 55679-55680 in 1916.

Essentially repeats of the New York Central's NU-1 class of 1913 (Locobase 5584), this pair of all-adhesion articulateds switched and pushed for more than 35 years.

The 9090 was the later of the two to be retired and was scrapped in 1951.

Specifications by Steve Llanso of Sweat House Media
ClassNB-1aNU-1a/c/eNU-1b
Locobase ID14,993 5584 13,995
RailroadNew York Central (NYC)New York Central (NYC)Pittsburgh & Lake Erie (NYC)
CountryUSAUSAUSA
Whyte0-6-6-00-8-8-00-8-8-0
Number in Class1122
Road Numbers13005897-59089090-9091
GaugeStdStdStd
Number Built1122
BuilderAlco-SchenectadyAlco-SchenectadyAlco-Schenectady
Year191319131916
Valve GearWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.0514.75 / 4.5014.75 / 4.50
Engine Wheelbase (ft / m)30.67 / 9.3540.29 / 12.2840.29 / 12.28
Ratio of driving wheelbase to overall engine wheebase 0.33 0.37 0.37
Overall Wheelbase (engine & tender) (ft / m)65.67 / 20.0274.37 / 22.6774.37 / 22.67
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)361,000 / 163,747466,000 / 211,374468,000 / 212,281
Engine Weight (lbs / kg)361,000 / 163,747466,000 / 211,374468,000 / 212,281
Tender Loaded Weight (lbs / kg)157,500 / 71,441162,500 / 73,709144,100 / 65,363
Total Engine and Tender Weight (lbs / kg)518,500 / 235,188628,500 / 285,083612,100 / 277,644
Tender Water Capacity (gals / ML)8000 / 34.098000 / 30.308000 / 30.30
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)12 / 10.9017 / 15.5017 / 15.50
Minimum weight of rail (calculated) (lb/yd / kg/m)100 / 5097 / 48.5098 / 49
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 129551 / 129550 / 1270
Boiler Pressure (psi / kPa)220 / 15.20220 / 15.20200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)21.5" x 30" / 546x76226" x 28" / 660x71126" x 28" / 660x711
Low Pressure Cylinders (dia x stroke) (in / mm)34" x 30" / 864x76240" x 28" / x71140" x 28" / 1016x711
Tractive Effort (lbs / kg)72,646 / 32951.7197,578 / 44260.6990,482 / 41041.99
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.97 4.78 5.17
Heating Ability
Firebox Area (sq ft / m2)265 / 24.62365 / 33.92364 / 33.82
Grate Area (sq ft / m2)53.60 / 4.9880.30 / 7.4680 / 7.43
Evaporative Heating Surface (sq ft / m2)4246 / 394.465289 / 491.545296 / 492.01
Superheating Surface (sq ft / m2)940 / 87.331235 / 114.781235 / 114.73
Combined Heating Surface (sq ft / m2)5186 / 481.796524 / 606.326531 / 606.74
Evaporative Heating Surface/Cylinder Volume336.83307.39307.80
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11,79217,66616,000
Same as above plus superheater percentage13,91521,02319,040
Same as above but substitute firebox area for grate area68,79495,55786,632
Power L1832383707461
Power MT304.97316.78281.17

Photos

Reference