Data from"Tender Locomotive for Mexican Oil Fields", Locomotive Magazine, Volume XIX [19] (15 March 1913), p. 57.
These small oilfield locomotive fittingly burned liquid fuel. LM reported that this were the smallest locomotives to use Holden's patent oil to burn refinery waste product. The circular steel firebox was fitted with firebars, but these were covered with broken fire brick onto which the burner sprayed the fuel. The firebox also had a "special" brick arch. "The locomotives." added LM, "have given a very good account of themselves and satisfaction to Messrs Pearson."
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | El Meson |
| Locobase ID | 16307 |
| Railroad | S Pearson & Son |
| Country | Mexico |
| Whyte | 0-6-0 |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 2' |
| Number Built | 1 |
| Builder | WG Bagnall |
| Year | 1912 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.75 / 1.75 |
| Engine Wheelbase (ft / m) | 5.75 / 1.75 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 14,560 / 6604 |
| Engine Weight (lbs / kg) | 14,560 / 6604 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 420 / 1.59 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 180 / 681 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 8 / 4 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 19 / 483 |
| Boiler Pressure (psi / kPa) | 150 / 10.30 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 6.5" x 9" / 165x229 |
| Tractive Effort (lbs / kg) | 2552 / 1157.57 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.71 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 50 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 5.08 / 1.55 |
| Firebox Area (sq ft / m2) | 13 / 1.21 |
| Grate Area (sq ft / m2) | 4.20 / 0.39 |
| Evaporative Heating Surface (sq ft / m2) | 128 / 11.90 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 128 / 11.90 |
| Evaporative Heating Surface/Cylinder Volume | 365.71 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 630 |
| Same as above plus superheater percentage | 630 |
| Same as above but substitute firebox area for grate area | 1950 |
| Power L1 | 2619 |
| Power MT | 1189.68 |