Niagara #6015 in Indianapolis, Indiana, June 30, 1956, soon before retirement
Type and origin
Power type
Steam
Builder
Alco-Schenectady (ALCO)
Build date
1945–1946
Total produced
27
Specifications
Configuration:
• Whyte
4-8-4
Gauge
4 ft 8+1⁄2 in (1,435 mm)
Leading dia.
36 in (914 mm)
Driver dia.
79 in (2,007 mm)
Trailing dia.
41 in (1,041 mm)
Length
115 ft 5+1⁄2 in (35.19 m)
Width
10 ft 8 in (3.25 m)
Height
15 ft 2+3⁄4 in (4.64 m)
Axle load
68,750 lb (31,184.5 kg; 31.2 t)
Adhesive weight
275,000 lb (124,737.9 kg; 124.7 t)
Loco weight
471,000 lb (213,642.0 kg; 213.6 t)
Tender weight
420,000 lb (190,508.8 kg; 190.5 t)
Total weight
891,000 lb (404,000 kg; 404 t)
Fuel type
Coal
Fuel capacity
92,000 lb (42,000 kg; 42 t)
Water cap.
18,000 US gal (68,000 L; 15,000 imp gal)
Fuel consumption
1 short ton (0.89 long tons) of coal per roughly 15 miles traveled (1 metric ton per 27 km)
Boiler
100 in (2,540 mm)
Boiler pressure
275 psi (1.90 MPa)
Cylinders
Two
Cylinder size
25.5 in × 32 in (648 mm × 813 mm)
Valve gear
Baker (No. 5500 Equipped With Franklin A1 Poppet Valve Gear)
Performance figures
Maximum speed
120 miles per hour (190 km/h)
Power output
5,070 hp (3,780 kW) at 62.5 mph (100.6 km/h)
Tractive effort
61,568 lbf (273.9 kN)
Factor of adh.
4.47
Career
Operators
New York Central Railroad
Class
S-1a, S-1b, S-2a
Number in class
S-1a (1), S-1b (25); S-2a (1)
Numbers
6000 (S-1a); 6001–6025 (S-1b); 5500 (S-2a)
Retired
1951-1956
Disposition
All scrapped
The New York Central Railroad's Niagara was a class of 27 4-8-4 steam locomotives built by the American Locomotive Company for the New York Central Railroad. Like many railroads that adopted different names for their 4-8-4s rather than “Northerns”, the New York Central named them “Niagaras”, after the Niagara River and Falls. It is considered as one of the most efficient 4-8-4 locomotives ever built.
The first Niagara was ordered in 1931: No. 800,[1] an experimental locomotive that had its boiler divided into three sections of different pressure. This was another failed experiment in high pressure steam locomotives.
By the 1940s, loads being hauled on the New York Central main line from New York to Chicago were as much as the famous J-class NYC Hudson 4-6-4's could handle. The Chief of Motive Power for the railroad, Paul W. Kiefer, decided to order some 4-8-4's which could sustain 6,000 horsepower (4,500 kW) on the run between the two cities, day after day without respite.
The American Locomotive Company (ALCO) proposed these locomotives, and although the design owes something to the Union Pacific 4-8-4's, of which Union Pacific 844 is the best-known, the design was actually quite new. Some steam experts have claimed the Niagara to be the ultimate locomotive[citation needed], as it had the speed of an FEF (the Union Pacific's nickname for their 'four eight fours' was FEF) and the power of Northerns with smaller driver wheels.
^Gerbracht, Thomas R. "Know Thy Niagaras, p. 197". Retrieved 2024-05-18.
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