Baltimore and Ohio EL Class 2-8-8-0 Articulated Locomotive

The Baltimore and Ohio Railroad was an early user of the 2-8-8-0, an unpopular type of articulated locomotive.  The first 2-8-8-0 operated by Baltimore and Ohio was numbered EL-1/a, which was built in 1916 at Baldwin Locomotive Works. The western end of their network had ruling gradients greater than 2%, and the 2-8-8-0 offered exceptional tractive effort, enabling a single locomotive to move the heaviest freight trains. As well as building these locomotives from scratch, the last in 1920, ten were converted from 0-8-8-0 configuration in 1920 and a further ten from 2-8-8-2 in 1922. These locomotives remained in operation until after World War II, the last being withdrawn in 1955. None were preserved.

Class EL-1/EL-2/EL-3/EL-5 Overview

Type and origin
Power type: Steam
Number in Class: 86
Whyte configuration: 2-8-8-0
Builder: Baldwin
Year built: 1916
Specifications
Gauge: Std 4 ft 8 1⁄2 in (1,435 mm)
Valve Gear: Baker or Walschaert
Driver Wheelbase: 15.50'
Engine Wheelbase: 50.33'
Overall Wheelbase: 82.61'
Weight on Drivers: 462,500 lbs
Locomotive Weight: 485,600 lbs
Tender Light Weight: 206,400 lbs
Total Engine and Tender Weight: 692,000 lbs
Water Capacity: 12,000 gals
Fuel Capacity (oil/coal): 20 tons
Driver Diameter: 58"
Boiler Pressure: 210 psi
High Pressure Cylinders:  26" x 31" (dia x stroke)
Low Pressure Cylinders: 41" x 31" (2) (dia x stroke)
Tractive Effort: 91,993 lbs
Factor of Adhesion: 5.03
Firebox:
 • Firebox Area: 393 sq. ft
 • Grate Area: 88.17 sq. ft
Evaporative Heating Surface: 5,836 sq. ft
Superheater:
• Superheating Surface: 1,415 sq. ft
Combined Heating Surface: 7,251 sq. ft
Career
Operator: Baltimore & Ohio (B&O)
Road Numbers: 7100-7170
Disposition: All scrapped.

Class EL-3a/EL-5a Overview

Type and origin
Power type: Steam
Number in Class: 64
Whyte configuration: 2-8-8-0
Builder: B & O
Year built: 1927
Specifications
Gauge: Std 4 ft 8 1⁄2 in (1,435 mm)
Valve Gear: Baker or Walschaert
Driver Wheelbase: 15.50'
Engine Wheelbase: 50.33'
Overall Wheelbase: 82.61'
Weight on Drivers: 459,400 lbs
Locomotive Weight: 484,400 lbs
Tender Light Weight: 262,000 lbs
Total Engine and Tender Weight: 746,400 lbs
Water Capacity: 18,000 gals
Fuel Capacity (oil/coal): 18 tons
Driver Diameter: 58"
Boiler Pressure: 210 psi
High Pressure Cylinders: 24" x 32"  (dia x stroke)
Low Pressure Cylinders: 41" x 31" (2) (dia x stroke)
Tractive Effort: 113,452 lbs
Factor of Adhesion: 4.05
Firebox:
 • Firebox Area: 341 sq. ft
 • Grate Area: 88.17 sq. ft
Evaporative Heating Surface: 5,784 sq. ft
Superheater:
 • Superheating Surface: 1,415 sq. ft
Combined Heating Surface: 7,199 sq. ft
Career
Operator: Baltimore & Ohio (B&O)
Road Numbers: 7100-7170
Disposition: All scrapped.

Class EL-6a Overview

Type and origin
Power type: Steam
Number in Class: 16
Whyte configuration: 2-8-8-0
Builder: B & O
Year built: 1922
Specifications
Gauge: Std 4 ft 8 1⁄2 in (1,435 mm)
Valve Gear: Southern
Driver Wheelbase: 15.46'
Engine Wheelbase: 53.33'
Overall Wheelbase: 98.27'
Weight on Drivers: 456,700 lbs
Locomotive Weight: 492,000 lbs
Tender Light Weight: 219,000 lbs
Total Engine and Tender Weight: 711,000 lbs
Water Capacity: 12,000 gals
Fuel Capacity (oil/coal): 20 tons
Driver Diameter: 63"
Boiler Pressure: 225 psi
High Pressure Cylinders: 25" x 32" (dia x stroke)
Low Pressure Cylinders: 41" x 31" (2) (dia x stroke)
Tractive Effort: 121,429 lbs
Factor of Adhesion: 3.76
Firebox
 • Firebox Area: 398 sq. ft
 • Grate Area: 88 sq. ft
Evaporative Heating Surface: 5,922 sq. ft
Superheater:
 • Superheating Surface: 1,380 sq. ft
Combined Heating Surface: 7,302 sq. ft
Career
Operator: Baltimore & Ohio (B&O)
Road Numbers: 7300-7315
First run:
Disposition: All scrapped.

See also:

2-8-8-0 Locomotives

Steam Locomotives

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