Harriman Lines 2-8-0 "Consolidation" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Heavy Consolidation C-187 (Locobase 5342)

Data from"Report of CommitteE on Power-Chicago, Rock Island & Pacific Railway-Descriptions of Standard Types of Locomotives," American Engineer and Railroad Journal, Volume 79 ( March 1905), pp. 84-86.

Part of the so-called "Harriman Common Standard", this class was completed without a superheater. Using the same firebox as the HCS Atlantics and Light Pacifics, the design had a middling number of tubes for a 2-8-0 of this size. Unlike the other two road engines of this policy, however, these were relatively big engines for their time and wheel arrangements and had comparatively big boilers for their cylinder volume.

Locobase 3165 (Southern Pacific) and 4399 (Union Pacific) are examples of this design. See Locobase 5340 for introduction to the HCS idea.

Specifications by Steve Llanso of Sweat House Media
ClassHeavy Consolidation C-187
Locobase ID5342
RailroadHarriman Lines
Number in Class
Road Numbers
Number Built
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)15.67
Engine Wheelbase (ft)24.33
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender) (ft)55.98
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)187,000
Engine Weight (lbs)208,000
Tender Loaded Weight (lbs)135,050
Total Engine and Tender Weight (lbs)343,050
Tender Water Capacity (gals)9000
Tender Fuel Capacity (oil/coal) (gals/tons)3535
Minimum weight of rail (calculated) (lb/yd)78
Geometry Relating to Tractive Effort
Driver Diameter (in)57
Boiler Pressure (psi)200
High Pressure Cylinders (dia x stroke) (in)22" x 30"
Tractive Effort (lbs)43,305
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.32
Heating Ability
Firebox Area (sq ft)177
Grate Area (sq ft)49.50
Evaporative Heating Surface (sq ft)3403
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)3403
Evaporative Heating Surface/Cylinder Volume257.82
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9900
Same as above plus superheater percentage9900
Same as above but substitute firebox area for grate area35,400
Power L16173
Power MT291.10