Huancayo a Ayacucho 2-6-0 Locomotives in Peru


Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 14381)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 66, p. 185+ and Vol 72, pp. 88+. Works numbers were 54261-54262 in January 1921 and 58044 in September 1924.

All Huancayo a Ayacucho locomotives were subject to two stringent demands: the ability to handle curves radii of 50 metre (164 feet) or 35 1/2 degrees and the ability to operate at altitudes up to 15,000 feet (4,572 metres).

A 9 May 1924 note in the 4's spec advises raising the question of "raising boiler to give more clearance for spring links and decreasing depth of fire box and improve design of frame."

Principal Dimensions by Steve Llanso of Middle Run Media

Class2
Locobase ID14381
RailroadHuancayo a Ayacucho
CountryPeru
Whyte2-6-0
Number in Class3
Road Numbers2-4
Gauge3'
Number Built3
BuilderBaldwin
Year1921
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)16.33 / 4.98
Ratio of driving wheelbase to overall engine wheelbase 0.49
Overall Wheelbase (engine & tender) (ft / m)43.15 / 13.15
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)74,000 / 33,566
Engine Weight (lbs / kg)83,000 / 37,648
Tender Loaded Weight (lbs / kg)62,000 / 28,123
Total Engine and Tender Weight (lbs / kg)145,000 / 65,771
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1500 / 5678
Minimum weight of rail (calculated) (lb/yd / kg/m)41 / 20.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43 / 1092
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)17" x 20" / 432x508
Tractive Effort (lbs / kg)18,281 / 8292.13
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.05
Heating Ability
Tubes (number - dia) (in / mm)123 - 2.25" / 57
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14 / 4.27
Firebox Area (sq ft / m2)86 / 7.99
Grate Area (sq ft / m2)16.90 / 1.57
Evaporative Heating Surface (sq ft / m2)1094 / 101.67
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1094 / 101.67
Evaporative Heating Surface/Cylinder Volume208.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2704
Same as above plus superheater percentage2704
Same as above but substitute firebox area for grate area13,760
Power L13326
Power MT297.27

All material Copyright © SteamLocomotive.com
Wes Barris