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 #1644.
Older-style Eight-wheeler with dome over the crown sheet just ahead of the cab andlarge oil-fueled headlight.
| Specifications | |
|---|---|
| Class | Matehuala |
| Locobase ID | 9620 |
| Railroad | Vanegas, Cedral & Rio Verde |
| Whyte | 4-4-0 |
| Road Numbers | 2 |
| Gauge | 3' |
| Builder | Brooks |
| Year | 1890 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase | 7' |
| Engine Wheelbase | 18.17' |
| Ratio of driving wheelbase to overall engine wheebase | 0.39 |
| Overall Wheelbase (engine & tender) | 41' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 48000 lbs |
| Engine Weight | 65000 lbs |
| Tender Light Weight | 55000 lbs |
| Total Engine and Tender Weight | 120000 lbs |
| Tender Water Capacity | 2400 gals |
| Tender Fuel Capacity (oil/coal) | 5 tons |
| Minimum weight per yard of rail on which locomotive could run | 40 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 50" |
| Boiler Pressure | 150 psi |
| Cylinders (dia x stroke) | 15" x 20" |
| Tractive Effort | 11475 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.18 |
| Heating Ability | |
| Firebox Area | 79 sq. ft |
| Grate Area | 13.50 sq. ft |
| Evaporative Heating Surface | 797 |
| Superheating Surface | |
| Combined Heating Surface | 797 |
| Evaporative Heating Surface/Cylinder Volume | 194.84 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2025 |
| Same as above plus superheater percentage | 2025 |
| Same as above but substitute firebox area for grate area | 11850 |
| Power L1 | 3642 |
| Power MT | 334.55 |
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