USRA 2-8-8-2

USRA 2-8-8-2
Virginian 900, prior to its refusal by the Virginian Railway. It (and VGN 901–904) became Norfolk and Western Railway 2000–2004, class Y-3.
Power type Steam
Builder ALCO, Baldwin
Total produced 106 originals, plus copies
Configuration 2-8-8-2
UIC classification (1′D)D1′ h4v
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Driver diameter 57 in (1,448 mm)
Weight on drivers 474,000 lb (215.0 t)
Locomotive weight 531,000 lb (240.9 t)
Fuel type Coal
Boiler pressure 240 lbf/in² (1.65 MPa)
Cylinders Four, two LP (front), two HP (rear)
High-pressure
cylinder size		 23 × 32 in (584 × 813 mm)
Low-pressure
cylinder size		 39 × 32 in (991 × 813 mm)
Tractive effort 101,300 lbf (450.6 kN)
Locomotive brakes Air
Train brakes Air
Disposition One copy (N&W 2050) preserved, remainder scrapped

The USRA 2-8-8-2 was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-8-2 wheel arrangement in the Whyte notation, or (1'D)'D1' in UIC classification. A total of 106 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design.

Contents

History

While the 2-8-8-2 had been built in the United States since 1909,[1] most development work had gone in to making subsequent locomotives larger and heavier. The Norfolk and Western Railway however, had taken development in a different direction. By using smaller cylinders and higher boiler pressure, the result was a locomotive capable of powerful performance, and a turn of speed higher than the 20 mph (32 km/h) maximum of the ‘traditional’ designs.[1]

The USRA 2-8-8-2 drew heavily on the Norfolk and Western Railway’s Y-2 class locomotive design, as their delegate to the 2-8-8-2 design committee had brought a full set of blueprints.[2]

Original owners

USRA originals

Railroad Quantity Class Road numbers Notes
Baltimore and Ohio Railroad
26
7145–7170
 rebuilt to EL-5 class 2-8-8-0[3]
Clinchfield Railroad
10
L-2
725–735
 [4]
Norfolk and Western Railway
45
Y-3
2005–2049
 [5]
Virginian Railway
5
—
900–904
 Refused, to Norfolk & Western 2000–2004[6]
Virginian Railway
20
USA
701–720
 [6]
Total 106

Copies

Railroad Quantity Class Road numbers Notes
Clinchfield Railroad
10
L-3
725–735
 [4]
Denver and Rio Grande Western Railroad
10
L-107
3500–3509
 [7]
Interstate Railway [1]
Norfolk and Western Railway
30
Y-3a
2050–2079
 [5]
Norfolk and Western Railway
45
Y-3b
2080–2089
 Later re-classed as Y-4[5]
Northern Pacific Railway
4
Z-4
4500–4503
 [8]
Virginian Railway
15
USB
721–735
 [6]
Total

Survivor

Although no original USRA 2-8-8-2 survives, one of the copies does. Norfolk & Western 2050, a 1923 ALCO product of N&W's Y-3a class, is on display at the Illinois Railway Museum.

References

Notes

  1. ^ a b c E. W. King, Jr. in Drury pp.298–299
  2. ^ E. W. King, Jr. in Drury p.299
  3. ^ Drury p.47
  4. ^ a b Drury pp.131, 133
  5. ^ a b c E. W. King, Jr. in Drury pp.299, 308
  6. ^ a b c E. W. King, Jr in Drury pp.417, 419
  7. ^ Drury pp.157, 161
  8. ^ Drury pp.310, 317

Bibliography

  • Drury, George H. (1983), Guide to North American Steam Locomotives, Waukesha, Wisconsin: Kalmbach Publishing Company, ISBN 0-89024-206-2, LCCN 93-41472 
  • Westcott, Linn H. (1960). Model Railroader Cyclopedia, volume 1, Steam Locomotives. Milwaukee, Wisconsin: Kalmbach Publishing Company. ISBN 0-89024-001-9. 
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