2-10-10-2
Virginian Class AE
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| Type and origin | |
|---|---|
| Reference: | |
| Power type | Steam |
| Builder | American Locomotive Company |
| Build date | 1918 |
| Total produced | 10 |
| Specifications | |
|---|---|
| Configuration: |
|
| • Whyte | 2-10-10-2 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver dia. | 56 in (1,422 mm) |
| Wheelbase | 64.25 ft (19.58 m) |
| Width | 12.0 ft (3.658 m) |
| Height | 16.7 ft (5.090 m) |
| Adhesive weight | 617,000 lb (279,866 kg; 280 t) |
| Loco weight | 684,000 lb (310,257 kg; 310 t) |
| Tender weight | 231,000 lb (104,780 kg; 105 t) |
| Total weight | 915,000 lb (415,037 kg; 415 t) |
| Fuel type | Coal |
| Water cap | 13,000 US gal (10,825 imp gal; 49,210 L) |
| Tender cap. | 12 short tons (10.7 long tons; 10.9 t) |
| Firebox: • Firegrate area |
109 sq ft (10 m2) |
| Boiler | 119 in (3,023 mm) |
| Boiler pressure | 215 psi (1 MPa) |
| Heating surface | 8,606 sq ft (800 m2) |
| Superheater: |
|
| • Heating area | 2,120 sq ft (197 m2) |
| Cylinders | 4 |
| Front cylinder | 48 in × 32 in (1,219 mm × 813 mm) |
| Rear cylinder | 30 in × 32 in (762 mm × 813 mm) |
| Loco brake | Air |
| Train brakes | Air |
| Performance figures | |
|---|---|
| Tractive effort | Compound: 147,200 lbf (655 kN) Simple: 175,000 lbf (778 kN) |
| Factor of adh. | 4.2 |
| Career | |
|---|---|
| Operators | Virginian |
| Number in class | 10 |
| Numbers | 800-809 |
| Disposition | All scrapped |
Under the Whyte notation for the classification of steam locomotive wheel arrangements, a 2-10-10-2 is a locomotive with two leading wheels, two sets of ten driving wheels, and a pair of trailing wheels.
Other equivalent classifications are:
UIC classification: 1EE1 (also known as German classification and Swiss classification)
Italian and French classification: 150+051
Turkish classification: 56+56
Swiss classification: 5/6+5/6
The equivalent UIC classification is refined to (1′E)E1′ for Mallet locomotives. All 2-10-10-2 locomotives have been articulated locomotives, Mallet locomotives in particular.
This wheel arrangement was rare. Only two classes of 2-10-10-2 locomotives have been built; the Atchison, Topeka and Santa Fe Railway's 3000 class, and the Virginian Railway's class AE.
This class of ten 2-10-10-2 locomotives were actually rebuilt from more conventional 2-10-2 Baldwin-built locomotives by the Atchison, Topeka and Santa Fe Railway in 1911 to 1912.
Although they appeared to have exceedingly long boilers, the barrel in front of the rear set of cylinders actually contained first a primitive firetube superheater for further heating the steam before use; the steam was carried forward from the boiler proper by outside steam pipes as shown in the photograph. Also in this space was a reheater for the high-pressure exhaust before it was fed to the forward low-pressure cylinders.
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Wikipedia