Atlantic Coast Line 2-10-0 "Decapod" Type Locomotives

Class O (Locobase 4400)

857 2-10-0s were built by Baldwin and Alco (Richmond and Schenectady Works) for the Russian Government. When that empire was overthrown, some 200 more of the Russian order was diverted to railroads in the US, including the ACL.

Ilustrations in Linn Wescott (Model Railroader Cyclopedia - Vol 1, 1960) and see Drury (1993), 176.

Specifications

Class O

Locobase ID 4400

Railroad Atlantic Coast Line (ACL)

Whyte 2-10-0

Road Numbers 8000-8009

Gauge Std

Builder several

Year 1918

Valve Gear Walschaert

Locomotive Length and Weight

Driver Wheelbase 18.33'

Engine Wheelbase 27.54'

Ratio of driving wheelbase to overall engine wheebase 0.67

Overall Wheelbase (engine & tender)

Axle Loading (Maximum Weight per Axle) 35000 lbs

Weight on Drivers 175000 lbs

Engine Weight 197900 lbs

Tender Light Weight 133000 lbs

Total Engine and Tender Weight 330900 lbs

Tender Water Capacity 7400 gals

Tender Fuel Capacity (oil/coal) 8.8 tons

Minimum weight per yard of rail on which locomotive could run 58 lb rail

Geometry Relating to Tractive Effort

Driver Diameter 52"

Boiler Pressure 180 psi

Cylinders (dia x stroke) 25" x 28"

Tractive Effort 51490 lbs

Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.40

Heating Ability

Firebox Area 227 sq. ft

Grate Area 64.70 sq. ft

Evaporative Heating Surface 2610

Superheating Surface 579

Combined Heating Surface 3189

Evaporative Heating Surface/Cylinder Volume 164.07

Computations Relating to Power Output (More Information)

Robert LeMassena's Power Computation 11646

Same as above plus superheater percentage 13975

Same as above but substitute firebox area for grate area 49032

Power L1 8783

Power MT 553.23

Specifications
Class	O
Locobase ID	4400
Railroad	Atlantic Coast Line (ACL)
Whyte	2-10-0
Road Numbers	8000-8009
Gauge	Std
Builder	several
Year	1918
Valve Gear	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	18.33'
Engine Wheelbase	27.54'
Ratio of driving wheelbase to overall engine wheebase	0.67
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)	35000 lbs
Weight on Drivers	175000 lbs
Engine Weight	197900 lbs
Tender Light Weight	133000 lbs
Total Engine and Tender Weight	330900 lbs
Tender Water Capacity	7400 gals
Tender Fuel Capacity (oil/coal)	8.8 tons
Minimum weight per yard of rail on which locomotive could run	58 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	52"
Boiler Pressure	180 psi
Cylinders (dia x stroke)	25" x 28"
Tractive Effort	51490 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	3.40
	Heating Ability
Firebox Area	227 sq. ft
Grate Area	64.70 sq. ft
Evaporative Heating Surface	2610
Superheating Surface	579
Combined Heating Surface	3189
Evaporative Heating Surface/Cylinder Volume	164.07
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	11646
Same as above plus superheater percentage	13975
Same as above but substitute firebox area for grate area	49032
Power L1	8783
Power MT	553.23

Reference

Atlantic Coast Line & Seaboard Air Line Railroads Historical Society
The Atlantic Coast Line Network
The Seaboard Air Line Network
Seaboard, The Route of Courteous Service by William E. Griffin, Jr.
Through the Heart of the South, the Seaboard Air Line Railroad Story by Robert Wayne Johnson, Published by Boston Mills Trees
Seaboard Air Line Railway Steam Boats, Locomotives and History by Richard E. Prince, Published by Indiana University Press

Credits

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