Harriman Lines 2-8-0 "Consolidation" Locomotives in 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.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassHeavy Consolidation C-187
Locobase ID5342
RailroadHarriman Lines
Number in Class
Road Numbers
Number Built
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.67 / 4.78
Engine Wheelbase (ft / m)24.33 / 7.42
Ratio of driving wheelbase to overall engine wheelbase 0.64
Overall Wheelbase (engine & tender) (ft / m)55.98 / 17.06
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)187,000 / 84,822
Engine Weight (lbs / kg)208,000 / 94,347
Tender Loaded Weight (lbs / kg)135,050 / 61,258
Total Engine and Tender Weight (lbs / kg)343,050 / 155,605
Tender Water Capacity (gals / ML)9000 / 34.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)3535 / 13,380
Minimum weight of rail (calculated) (lb/yd / kg/m)78 / 39
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 1448
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)22" x 30" / 559x762
Tractive Effort (lbs / kg)43,305 / 19642.84
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.32
Heating Ability
Tubes (number - dia) (in / mm)413 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)15 / 4.57
Firebox Area (sq ft / m2)177 / 16.44
Grate Area (sq ft / m2)49.50 / 4.60
Evaporative Heating Surface (sq ft / m2)3403 / 316.26
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)3403 / 316.26
Evaporative Heating Surface/Cylinder Volume257.80
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 L16172
Power MT291.06

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