Atlantic Coast Line 2-10-0 "Decapod" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

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. See the quite detailed overview published by designer Alphonse I Lipetz, "Russian 'Decapod' Locomotives", The Railway Engineer, Volume 43, No 2 (February 1922), pp. 51-54; April 1922, pp. 136-137; July 1922, pp. 249-251; and November 1922, pp. 415-417.

Specifications by Steve Llanso of Sweat House Media
ClassO
Locobase ID4400
RailroadAtlantic Coast Line (ACL)
CountryUSA
Whyte2-10-0
Number in Class10
Road Numbers8000-8009
GaugeStd
Number Built10
Builderseveral
Year1918
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase18.33'
Engine Wheelbase27.54'
Ratio of driving wheelbase to overall engine wheebase 0.67
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)35000 lbs
Weight on Drivers175000 lbs
Engine Weight197900 lbs
Tender Light Weight133000 lbs
Total Engine and Tender Weight330900 lbs
Tender Water Capacity7400 gals
Tender Fuel Capacity (oil/coal)8.8 tons
Minimum weight of rail (calculated)58 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter52"
Boiler Pressure180 psi
Cylinders (dia x stroke)25" x 28"
Tractive Effort51490 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.40
Heating Ability
Firebox Area227 sq. ft
Grate Area64.70 sq. ft
Evaporative Heating Surface2610 sq. ft
Superheating Surface579 sq. ft
Combined Heating Surface3189 sq. ft
Evaporative Heating Surface/Cylinder Volume164.07
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11646
Same as above plus superheater percentage13742
Same as above but substitute firebox area for grate area48215
Power L18783
Power MT553.23

Reference


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