Hacienda Roma 2-8-0 Locomotives in Peru


Class Details by Steve Llanso of Sweat House Media

Class Gran Chimu (Locobase 15096)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 66, p. 179. Works number was 54695 in March 1921.

Following the two wood-burners purchased by William H Knox for the Hacienda Roma (Locobase 15095), the sugar producer used Graham Howe & Company to buy a still larger (for the HR) oil-burning Consolidation. Like many such engines, the Gran Chimu was designed to be readily convertible to burn coal.


Class Roma (Locobase 15095)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 66, p. 177. Works numbers were 51088-51089 in January 1919.

Two wood-burning Consolidations--Roma and Huanchaco--were purchased by the William H Knox company for this sugar mill in Peru. They were the largest Baldwins delivered to the Hacienda Roma to that point. See Locobase 13753 for a history of the HR.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassGran ChimuRoma
Locobase ID15096 15095
RailroadHacienda RomaHacienda Roma
CountryPeruPeru
Whyte2-8-02-8-0
Number in Class12
Road Numbers
Gauge3'3'
Number Built12
BuilderBaldwinBaldwin
Year19211919
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.33 / 3.1510.33 / 3.15
Engine Wheelbase (ft / m)16.08 / 4.9016.08 / 4.90
Ratio of driving wheelbase to overall engine wheelbase 0.64 0.64
Overall Wheelbase (engine & tender) (ft / m)39.58 / 12.0638.79 / 11.82
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)57,000 / 25,85550,250 / 22,793
Engine Weight (lbs / kg)63,500 / 28,80356,450 / 25,605
Tender Loaded Weight (lbs / kg)51,500 / 23,36034,800 / 15,785
Total Engine and Tender Weight (lbs / kg)115,000 / 52,16391,250 / 41,390
Tender Water Capacity (gals / ML)2300 / 8.711550 / 5.87
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1100 / 4164
Minimum weight of rail (calculated) (lb/yd / kg/m)24 / 1221 / 10.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 91436 / 914
Boiler Pressure (psi / kPa)170 / 11.70160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x45713" x 18" / 330x457
Tractive Effort (lbs / kg)12,210 / 5538.3711,492 / 5212.69
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.67 4.37
Heating Ability
Tubes (number - dia) (in / mm)100 - 2" / 5172 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.76 / 4.1913.75 / 4.19
Firebox Area (sq ft / m2)60 / 5.5849 / 4.55
Grate Area (sq ft / m2)14.30 / 1.3311 / 1.02
Evaporative Heating Surface (sq ft / m2)778 / 72.30564 / 52.40
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)778 / 72.30564 / 52.40
Evaporative Heating Surface/Cylinder Volume281.35203.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation24311760
Same as above plus superheater percentage24311760
Same as above but substitute firebox area for grate area10,2007840
Power L139762809
Power MT615.13492.96

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