Western Railroad of Alabama 4-8-2 "Mountain" Type Locomotives

Class 180 (Locobase 3104)

Part of a batch of Mountains built for the Central of Georgia, it would appear, based on the identical basic power dimensions, the date of construction, and the builder. Data from A&WP - WRA 10 - 1945 Locomotive and Crane Diagrams supplied in May 2005 by Allen Stanley from his extensive collection.

These two lasted in Western service until 1952 and 1954.

Specifications

Class 180

Locobase ID 3104

Railroad Western Railroad of Alabama

Whyte 4-8-2

Road Numbers 180-181

Gauge Std

Builder Alco-Richmond

Year 1920

Valve Gear Walschaert

Locomotive Length and Weight

Driver Wheelbase 18'

Engine Wheelbase 38.92'

Ratio of driving wheelbase to overall engine wheebase 0.46

Overall Wheelbase (engine & tender) 73.94'

Axle Loading (Maximum Weight per Axle) 52500 lbs

Weight on Drivers 209500 lbs

Engine Weight 314000 lbs

Tender Light Weight 198700 lbs

Total Engine and Tender Weight 512700 lbs

Tender Water Capacity 11000 gals

Tender Fuel Capacity (oil/coal) 15 tons

Minimum weight per yard of rail on which locomotive could run 87.29 lb rail

Geometry Relating to Tractive Effort

Driver Diameter 69"

Boiler Pressure 190 psi

Cylinders (dia x stroke) 27" x 28"

Tractive Effort 47776 lbs

Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.39

Heating Ability

Firebox Area 280 sq. ft

Grate Area 66.70 sq. ft

Evaporative Heating Surface 3662

Superheating Surface 817

Combined Heating Surface 4479

Evaporative Heating Surface/Cylinder Volume 197.36

Computations Relating to Power Output (More Information)

Robert LeMassena's Power Computation 12673

Same as above plus superheater percentage 14984.64

Same as above but substitute firebox area for grate area 62904.04

Power L1 14619.63

Power MT 615.38

Specifications
Class	180
Locobase ID	3104
Railroad	Western Railroad of Alabama
Whyte	4-8-2
Road Numbers	180-181
Gauge	Std
Builder	Alco-Richmond
Year	1920
Valve Gear	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	18'
Engine Wheelbase	38.92'
Ratio of driving wheelbase to overall engine wheebase	0.46
Overall Wheelbase (engine & tender)	73.94'
Axle Loading (Maximum Weight per Axle)	52500 lbs
Weight on Drivers	209500 lbs
Engine Weight	314000 lbs
Tender Light Weight	198700 lbs
Total Engine and Tender Weight	512700 lbs
Tender Water Capacity	11000 gals
Tender Fuel Capacity (oil/coal)	15 tons
Minimum weight per yard of rail on which locomotive could run	87.29 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	69"
Boiler Pressure	190 psi
Cylinders (dia x stroke)	27" x 28"
Tractive Effort	47776 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.39
	Heating Ability
Firebox Area	280 sq. ft
Grate Area	66.70 sq. ft
Evaporative Heating Surface	3662
Superheating Surface	817
Combined Heating Surface	4479
Evaporative Heating Surface/Cylinder Volume	197.36
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	12673
Same as above plus superheater percentage	14984.64
Same as above but substitute firebox area for grate area	62904.04
Power L1	14619.63
Power MT	615.38

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.