Data from FCM 1920 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also "Pachuca-Tampico Railway Progressing", Standard Daily Trade Service (19 July 1919), p. 155; and "Mexican (Vera Cruz) Railway to Build New Line", Railway Age, Volume 72, No. 11 (18 March 1922), p. 758. Works number was 43296 in September 1907.
This lone Ten-wheeler was a very small machine for standard gauge at that time. The order actually came from the San Carlos Copper company, a small company with mine offices in Linares, Sexto, and Nuevo Leon. The railroad was begun by Richard Honey, a Cornishman who had acclimated himself to Mexican culture, language, and business opportunities. He obtained a concession in 1889 from the Mexican government to build the Pachuca, Zacualtipan and Tampico Railway, which was envisioned as ultimately linking Pachuca near Mexico City with the Gulf of Mexico port at Tampico. The actual concession for the T&P was granted in 1906. At the time, the hope was that the main line between Pachuca and Zimapan within nine years.
The railway itself took a long time abuilding. It had extended 45 miles (72 km) to Ixmiquilpan in 1919. The anticipated agricultural development in Hidalgo and Vera Cruz States hadn't "progressed satisfactorily for some time past", said the Daily Trade Service report, but said "it is asserted that the Pachuca-Tampico line will do much to increase production."
By 1922, the railway had been taken over by the Mexican (Vera Cruz) Railway Company when it purchased controlling interest from Richard Honey's heirs. But the extension to Tampico itself was more problematic. It's likely that the 3 was one of "an engine or two in need of repairs" at that time, according to B E Holloway, then general manager. In any case, the MR renumbered the engine 51.
At some point, the MR most likely replaced the original boiler with the one shown in Locobase 6739.
Data from FCM 1920 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also NdeM 1950 Locomotive Diagrams Standard Gauge.
A pair of Rhode Island Ten-wheelers that were among the largest and most powerful Ten-wheelers delivered in that era. Their power came from a relatively large firebox. In the 1950 version, the grate area was 34.16 sq ft and firebox area was reduced to 179 sq ft.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | PF-2 | PF-3 / F-30 |
Locobase ID | 6959 | 6960 |
Railroad | Pachuca a Tampico | Pachuca a Tampico |
Country | Mexico | Mexico |
Whyte | 4-6-0 | 4-6-0 |
Number in Class | 1 | 1 |
Road Numbers | 810 | |
Gauge | Std | Std |
Number Built | 1 | 1 |
Builder | Alco-Rogers | Rhode Island |
Year | 1907 | 1891 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 10.40 / 3.17 | 11 / 3.35 |
Engine Wheelbase (ft / m) | 21.44 / 6.53 | 22.25 / 6.78 |
Ratio of driving wheelbase to overall engine wheelbase | 0.49 | 0.49 |
Overall Wheelbase (engine & tender) (ft / m) | 49.62 / 15.12 | 52.25 / 15.93 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 79,084 / 35,872 | 110,990 / 50,344 |
Engine Weight (lbs / kg) | 109,156 / 49,512 | 140,990 / 63,952 |
Tender Loaded Weight (lbs / kg) | 82,930 / 37,616 | 93,300 / 42,320 |
Total Engine and Tender Weight (lbs / kg) | 192,086 / 87,128 | 234,290 / 106,272 |
Tender Water Capacity (gals / ML) | 4500 / 17.05 | 4500 / 17.05 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2850 / 10,787 | 2546 / 9637 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 44 / 22 | 62 / 31 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 56 / 1422 | 56 / 1422 |
Boiler Pressure (psi / kPa) | 145 / 1000 | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 | 20" x 24" / 508x610 |
Tractive Effort (lbs / kg) | 15,265 / 6924.10 | 26,229 / 11897.29 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.18 | 4.23 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 200 - 2" / 51 | 278 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 12.31 / 3.75 | 12.64 / 3.85 |
Firebox Area (sq ft / m2) | 145 / 13.47 | 196 / 18.21 |
Grate Area (sq ft / m2) | 22 / 2.04 | 39.70 / 3.69 |
Evaporative Heating Surface (sq ft / m2) | 1434 / 133.27 | 1964 / 182.53 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1434 / 133.27 | 1964 / 182.53 |
Evaporative Heating Surface/Cylinder Volume | 227.26 | 224.97 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 3190 | 7146 |
Same as above plus superheater percentage | 3190 | 7146 |
Same as above but substitute firebox area for grate area | 21,025 | 35,280 |
Power L1 | 4631 | 5665 |
Power MT | 387.29 | 337.58 |