Pennsylvania Railroad class J28

The Pennsylvania Railroad's class J28 comprised 2 experimental 2-6-2 "Prairie" type steam locomotives.

PRR Class J28
Type and origin
Power typeSteam
BuilderAlco-Schenectady
Build date1905
Total produced2
Specifications
Configuration:
​
 • Whyte2-6-2
Gauge4 ft 8 1⁄2 in (1,435 mm)
Driver dia.80 in (2,000 mm)
Wheelbase:
 • Engine		34 ft 3 in (10,440 mm)
Total weight377,500 lb (171,200 kg)
Fuel typecoal
Fuel capacity13.5 tons
Water cap7,000 imp gal (32,000 l; 8,400 US gal)
Firebox:
 • Firegrate area		54 sq ft (5.0 m2)
Heating surface:
 • Firebox		89 sq ft (8.3 m2)
Valve gear#7453: Stephenson
#2761: Walschaerts
Performance figures
Maximum speed45-65 Mph
Tractive effort27,504 lbf
Career
OperatorsPennsylvania Railroad
ClassJ28
Number in class2
Numbers7453, 2761
LocaleNortheastern United States
Retired1921 (1) 1924 (1)
DispositionScrapped

History

In 1905, the Pennsylvania Railroad needed a better steam locomotive, than the class E 4-4-2 "Atlantic" type. So, the railroad ordered two 2-6-2s from Alco-Schenectady. They were tested extensively and failed in railroad service. But, they were still on the roster in the late 1920s.

Specifications

The two J28s had 80 inch drivers and a 34.25 foot engine wheelbase. Engine #7453 had inboard piston valves and Stephenson valve gear, while #2761 had outside piston valves and Walschaerts valve gear. They each weighed 377,500 pounds with the tender. They had 27,504 pounds of tractive effort. They had 89 square feet (8.3 m2) of firebox space. They had a grate area of 54 square feet (5.0 m2). They could hold 7,000 gallons of water and 13.5 tons of coal. Despite these specifications and more, the J28 was not a powerful enough Pennsylvania Railroad locomotive.

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