Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 261. Information on the railway from Elio Galessio,"Breve Rese'a Histórica de los Ferrocarriles en el Per+" from [], last accessed 20 November 2011. Works numbers were 32887-32888 in July 1908.
Several Cuban railroads operated identical Moguls on their 2 1/2-gauge railways, but this pair served a short railroad in the North of Peru. Also known as the Tumbes a La Palizada (and so identified in Baldwin's specifications), this 11-km (6.8-mile) short line was buillt in 1908 under authority granted in 1907 by Law 697.
The P & LP opened in 1909, most likely using the Tumbes and her sister the Puerto. The profile wasn't especially challenging - maximum grade inclined a mere 1%. The specs said the Mogul should manage 150 trailing tons up this grade and should traverse "easily" curves as tight as 200 feet (61 metres) in radius.
According to Galessio,the line always struggled: "It always had the problem, among many others, of working at a loss given the low numbers of passenger and freight that it transported." (Locobase translation). The line closed in 1949.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | Tumbes |
Locobase ID | 13477 |
Railroad | Ferrocarril Tumbes-Puerto Pizarro |
Country | Peru |
Whyte | 2-6-0 |
Number in Class | 2 |
Road Numbers | 1, 8 |
Gauge | 2'6" |
Number Built | 2 |
Builder | Burnham, Williams & Co |
Year | 1908 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 8.33 / 2.54 |
Engine Wheelbase (ft / m) | 14.33 / 4.37 |
Ratio of driving wheelbase to overall engine wheelbase | 0.58 |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 29,000 / 13,154 |
Engine Weight (lbs / kg) | 35,000 / 15,876 |
Tender Loaded Weight (lbs / kg) | 24,000 / 10,886 |
Total Engine and Tender Weight (lbs / kg) | 59,000 / 26,762 |
Tender Water Capacity (gals / ML) | 1200 / 4.55 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 16 / 8 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 36 / 914 |
Boiler Pressure (psi / kPa) | 150 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 16" / 279x406 |
Tractive Effort (lbs / kg) | 6857 / 3110.29 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.23 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 94 - 1.5" / 38 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 7.73 / 2.36 |
Firebox Area (sq ft / m2) | 41.40 / 3.85 |
Grate Area (sq ft / m2) | 7.10 / 0.66 |
Evaporative Heating Surface (sq ft / m2) | 323 / 30.01 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 323 / 30.01 |
Evaporative Heating Surface/Cylinder Volume | 183.54 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1065 |
Same as above plus superheater percentage | 1065 |
Same as above but substitute firebox area for grate area | 6210 |
Power L1 | 2710 |
Power MT | 618.05 |