NYC Niagara.html



NYC Niagara

Niagara #6015 in Indianapolis, Indiana, June 30, 1956. A few days later, the locomotive was retired
Power type	Steam
Builder	Alco-Schenectady
Build date	1945–1946
Total production	27
Configuration	4-8-4
Gauge	4 ft 8½ in (1,435 mm)
Driver size	79 in (2.007 m)
Length	115 ft 5½ in (35.19 m)
Axle load	32 long tons (32.5 t)
Locomotive and tender combined weight	405 long tons (411 t)
Fuel type	Coal
Fuel capacity	92,000 lb (42 t)
Boiler pressure	275 psi (1.90 MPa)
Cylinders	Two
Cylinder size	25.5 in × 32 in (648 mm × 813 mm)
Valve gear	Baker
Power output	6,700 hp (5,000 kW)
Tractive effort	61,570 lbf (273.9 kN)
Career	New York Central Railroad
Class	S-1a, S-1b, S-2a
Number in class	S-1a (1), S-1b (25); S-2a (1)
Number	6000 (S-1a); 6001–6025 (S-1b); 5500 (S-2a)

Niagara #6015 in Indianapolis, Indiana, June 30, 1956, possibly on its last ever passenger run.

The New York Central Railroad Niagara was a type of steam locomotive named after the Niagara River and Falls.They were express mixed traffic locomotives with a wheel arrangement of 4-8-4 in the Whyte notation.

The first New York Central Railroad Northern (or 4-8-4) was ordered in 1931: #800, 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 1940's, it was obvious that the loads being hauled along 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, as it had the speed of an FEF and the power of Northerns with smaller driver wheels.

Locomotive details

The first actual Niagara ordered by the NYC was Class S-1a #6000 in 1945. The S-1b (6001-6025) were delivered in 1945-46. These were built as mixed-purpose locomotives. The 4-8-4 traditionally is a passenger locomotive, which the NYC used its Niagaras for after World War II, but War Production Board regulations prohibited the building of passenger engines in 1945. The NYC's last steam locomotive was a Class S-2 Niagara: #5500; it had poppet valves. One notable trait of the Niagaras was that they did not have steam domes, as other steam locomotives did, which resulted in a very smooth contour across the top of the boiler. A perforated pipe was used to collect steam instead. This was necessary because of the lower loading gauge of the New York Central (15 ft 2 in versus 16 ft 2 in for the other American railroads).

These locomotives had quite a small water capacity in the tender, because the New York Central was one of the few in North America which used track pans (or water troughs). This allowed for a larger coal capacity, which enabled the New York to Chicago run to be done with only one intermediate fueling: usually at Wayneport, New York (a few miles east of Rochester). Fuel capacity was 92,000 pounds (42 t).

On test, these locomotives achieved 6,700 hp, and ran an average of 26,000 miles per month.

• Cylinders:
• Bore and stroke: 25½×32 inches (648×813 mm)
• Driving wheel diameter: 79 inches (2.007 m)
• Boiler pressure: 275 lbf/in² (1.90 MPa)
• Tractive effort: 61,570 pounds-force (273.9 kN)
• Axle load: 32 long tons (32.5 t)
• Valve gear: Baker valve gear
• Total length: 115 feet 5½ inches (35.19 m)
• Total weight: 405 long tons (411 t)

All bearings were either roller bearings or needle rollers.

Maintenance

The six days per week running schedule of these locomotives meant that all of the work normally done over the course of that week would have to be done on one day. This meant a specialized system was developed, where men in "hot suits" (asbestos heat-resistant coveralls) entered the firebox while the locomotive was still in steam and cleared all of the tubes, repaired the brick arch, etc. As the temperature inside the firebox itself would have been well over 100 degrees Celsius (212 F), and the working area these maintenance workers would have been standing on was the still-hot firebars of the grate, all references describe these workers as 'heroic' (reference: pages 172 ~ 173 The Great Book of Trains, Brian Hollingsworth and Arthur Cook (Bedford Editions, Salamander Books, 1987) )

This type of intensive maintenance was studied by steam locomotive designers such as Andre Chapelon, Livio Dante Porta, and David Wardale. These designers based their modern steam locomotives on the experience gained in these Niagara-class locomotives: reliability; and a close attention to details leading to a reduction in maintenance costs.

The 1946 steam-versus-diesel trials

Six of these locomotives were chosen by their designer, Paul W. Kiefer, to participate in the famous 1946 Steam Versus Diesel road trials, where the 6,000 hp Niagaras were put up against some 4,000 hp diesels (E7's). The locomotives were run along the 928.1 miles (1,493.6 km) from New York (Harmon) to Chicago, via Albany, Syracuse, Rochester, Buffalo, Cleveland, Toledo and Elkhart, and return. The results were actually very close, as the table below shows:

The above table is from Paul W. Kiefer (1947). A Practical Evaluation of Railroad Motive Power. Steam Locomotive Research Institute Inc., New York. 

The results were much closer than the diesel salesmen were comfortable with, but these steam locomotives were hampered by several factors: a series of coal miners' strikes; aggressive dieselisation sales efforts; and a failure of the highly-expensive firebox-wrapper metallurgy to withstand the conditions of actual operation. (reference: pages 172 ~ 173 The Great Book of Trains, Brian Hollingsworth and Authur Cook (Bedford Editions, Salamander Books, 1987) )

Diesel fuel now cost about USD 3 per US gallon: a 3,750% increase since 1946, and coal at US$70 per short ton ($77/t) (at the time of writing): a 1,555% increase since 1946.

The last days of the Niagaras

As the firebox wrappers failed, the locomotives were withdrawn, and eventually all were scrapped. According to the following, the retirement dates areas below:

http://madisonrails.railfan.net/lewman31_niagaras_retired.html

December 8, 2003

Here's about all I can tell you.

May 1955 - Niagaras 6000-6025 (26 engines) still on roster. (5500 had been retired 1951).

August 1955: 19 Niagaras retired, leaving 6000, 6007, 6015, 6019, 6020, 6023, 6024.

November 1955: 6007 retired.

March 1956: 6000, 6019, 6020, 6023, 6024 retired, leaving only 6015.

June 30, 1956: Last run of 6015 in passenger service, Train No. 416, Indianapolis to Cincinnati on account of a diesel failure. Departed Indianapolis 34 minutes late, arrived Cincinnati 6 minutes late.

July 2, 1956, Returned to Indianapolis in freight service, train CC-3. Final run.

Charlie Smith

The dates of scrapping are unknown at this stage.

See also

• PRR T1

References

• Staufer, Alvin (1961). Steam Power of the New York Central System, Volume 1: Modern Power, 1915–1955. Staufer. 

• Brian Hollingsworth and Authur Cook (1987). The Great Book of Trains. Bedford Editions Salamander Books.  See especially pages 172 ~ 173.