Data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899).
Builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.
Works number was 3182.
This substantial Mogul had an "Improved Belpaire" boiler with a large cab.
Data from NdeM 1926ca Locomotive Diagrams supplied in December 2010 by Allen Stanley. Works number was 62094 in September 1920.
This was a relatively large three-foot gauge Mogul in most respects. It had a wide (47 1/4"/1,200 mm), shallow firebox and three large domes (sand-steam-sand) along the top of the boiler.
It served the NdeM for almost 30 years before being retired in September 1948.
Data from NdeM 1950 Locomotive Diagrams Standard Gauge supplied in December 2010 by Allen Stanley. Don Ross's photo website ([]) includes captions under two E-4s, then numbered 657-658, that give the month-year of production as November 1903; the works numbers for these two were 28303-28304.
As delivered, the class had spacious Harriman cabs and quite orthodox lines for a light Mogul. The two equal-sized sand domes sat between the stack and the larger steam dome.
The Nacional de Mexico (NdeM) took over the FCM in 1908 and in 1910 renumbered the class 115-128 and designated them class D-14. In 1930, the class was redesignated E-4 and their road number range shifted to 654-667.
Data from NdeM 1950 Locomotive Diagrams Standard Gauge supplied in December 2010 by Allen Stanley. Superheater area is estimated based on installations of similar number, flue count and diameter, and flue length.
Locobase suspects that this quintet was originally supplied as a continuation of the D-2 series of Moguls first delivered in 1904 and described in Locobase 11923. Thus, the engines had 20" x 26" cylinders in a saturated boiler pressed to 200 psi.
Sometime later, the Nacional de Mexico (NdeM) superheated the class. Adopting one of the two main philosophies of such conversions, the shops took advantage of the hotter, drier steam to reduce the boiler pressure as well as the cylinder volume.
Principal Dimensions by Steve Llanso of Middle Run Media | ||||
---|---|---|---|---|
Class | 43 | D-010 / E-02 | D-2 / E-4 | ER-7 |
Locobase ID | 9623 | 11888 | 11923 | 11924 |
Railroad | Central Mexicano (NdeM) | Nacional de Mexico (NdeM) | Central Mexicano (NdeM) | Nacional Mexicano (NdeM) |
Country | Mexico | Mexico | Mexico | Mexico |
Whyte | 2-6-0 | 2-6-0 | 2-6-0 | 2-6-0 |
Number in Class | 1 | 1 | 14 | 5 |
Road Numbers | 43 | 208/167 | 130-143/ 654-667 | / 670-674 |
Gauge | Std | 3' | Std | Std |
Number Built | 1 | 1 | 14 | 5 |
Builder | Brooks | Alco-Cooke | Alco-Cooke | Alco-Cooke |
Year | 1899 | 1920 | 1903 | 1906 |
Valve Gear | Stephenson | Walschaert | Stephenson | Stephenson |
Locomotive Length and Weight | ||||
Driver Wheelbase (ft / m) | 10 / 3.05 | 8.42 / 2.57 | 15 / 4.57 | 13.33 / 4.06 |
Engine Wheelbase (ft / m) | 18.08 / 5.51 | 17.04 / 5.19 | 23.79 / 7.25 | 21.25 / 6.48 |
Ratio of driving wheelbase to overall engine wheelbase | 0.55 | 0.49 | 0.63 | 0.63 |
Overall Wheelbase (engine & tender) (ft / m) | 46.37 / 14.13 | 43.35 / 13.21 | 56.08 / 17.09 | 53.33 / 16.25 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||||
Weight on Drivers (lbs / kg) | 132,000 / 59,874 | 61,993 / 28,120 | 142,370 / 64,578 | 118,000 / 53,524 |
Engine Weight (lbs / kg) | 156,300 / 70,897 | 77,491 / 35,149 | 168,370 / 76,371 | 135,000 / 61,235 |
Tender Loaded Weight (lbs / kg) | 91,300 / 41,413 | 62,502 / 28,350 | 141,120 / 64,011 | 87,800 / 39,825 |
Total Engine and Tender Weight (lbs / kg) | 247,600 / 112,310 | 139,993 / 63,499 | 309,490 / 140,382 | 222,800 / 101,060 |
Tender Water Capacity (gals / ML) | 4500 / 17.05 | 2900 / 10.98 | 6000 / 22.73 | 3500 / 13.26 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.50 / 8 | 1000 / 3785 | 3199 / 12,108 | 1750 / 6624 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 73 / 36.50 | 34 / 17 | 79 / 39.50 | 66 / 33 |
Geometry Relating to Tractive Effort | ||||
Driver Diameter (in / mm) | 55 / 1397 | 38 / 965 | 63 / 1600 | 55 / 1397 |
Boiler Pressure (psi / kPa) | 180 / 1240 | 160 / 1100 | 200 / 1380 | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 | 15" x 20" / 381x508 | 20" x 26" / 508x660 | 19" x 24" / 483x610 |
Tractive Effort (lbs / kg) | 28,931 / 13122.90 | 16,105 / 7305.11 | 28,063 / 12729.18 | 24,102 / 10932.50 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.56 | 3.85 | 5.07 | 4.90 |
Heating Ability | ||||
Tubes (number - dia) (in / mm) | 320 - 2" / 51 | 130 - 2" / 51 | 303 - 2" / 51 | 122 - 2" / 51 |
Flues (number - dia) (in / mm) | 21 - 5.375" / 137 | |||
Flue/Tube length (ft / m) | 11.59 / 3.53 | 14.33 / 4.37 | 13 / 3.96 | 11.79 / 3.59 |
Firebox Area (sq ft / m2) | 165 / 15.33 | 66 / 6.13 | 144 / 13.38 | 129.30 / 12.01 |
Grate Area (sq ft / m2) | 24.60 / 2.29 | 18.37 / 1.71 | 44 / 4.09 | 27.60 / 2.57 |
Evaporative Heating Surface (sq ft / m2) | 2088 / 194.05 | 976 / 90.71 | 2206 / 205.02 | 1231 / 114.41 |
Superheating Surface (sq ft / m2) | 250 / 23.23 | |||
Combined Heating Surface (sq ft / m2) | 2088 / 194.05 | 976 / 90.71 | 2206 / 205.02 | 1481 / 137.64 |
Evaporative Heating Surface/Cylinder Volume | 220.95 | 238.63 | 233.44 | 156.22 |
Computations Relating to Power Output (More Information) | ||||
Robert LeMassena's Power Computation | 4428 | 2939 | 8800 | 4968 |
Same as above plus superheater percentage | 4428 | 2939 | 8800 | 5813 |
Same as above but substitute firebox area for grate area | 29,700 | 10,560 | 28,800 | 27,231 |
Power L1 | 5086 | 3236 | 6502 | 8643 |
Power MT | 254.83 | 345.24 | 302.05 | 484.44 |