According to the Circulo de Estudios Ferrovarios del Uruguay (CEFU) website ([]), this small class of Moguls came to the MUR and its successor the Central Uruguay Railway over more than 2 decades. Three were delivered by Beyer, Peacock, & Co (bldr # 3009-3011) in 1889. After 1899, the MUR formed part of the Central Uruguay Railway (CUR), to which another 2 came from Beyer's in 1905 (4744-4745), 2 more were delivered by Hudswell Clarke in 1906 (778-779), and 1 more came from Beyer in 1910 (5394). Immediately after this last small Mogul, Beyer's began work on a contract for 8 much larger 2-6-0s of the N1 class (see that entry).
Data from "Powerful New Engines for the Midland Uruguay Railway", Railway Times, Volume LXXXIX [89], No 19 (12 May 1906), p. 605.
This pair of goods Moguls were built to the specification of consulting engineers Messrs. Livesey, Son & Henderson, then employed by the Midland Uruguay Company. The product's profile has some proportion issues. The cab seems too tall for the boiler and squared-off Belpaire firebox, the thimble steam dome too small, the capped stack a bit too far back in the extended smokebox. But most disconcerting of all is the American-designed electric headlight perched on top of the smokebox ahead of the stack and sheathed in a bell-shaped casing taller than the stack itself.
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | B1 | unknown |
Locobase ID | 4813 | 20433 |
Railroad | Midland Uruguay | Midland Uruguay |
Country | Uruguay | Uruguay |
Whyte | 2-6-0T | 2-6-0 |
Number in Class | 8 | 2 |
Road Numbers | ||
Gauge | Std | Std |
Number Built | 8 | 2 |
Builder | several | Hudswell, Clarke |
Year | 1889 | 1906 |
Valve Gear | Stephenson | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 10.17 / 3.10 | 11.17 / 3.79 |
Engine Wheelbase (ft / m) | 17.33 / 5.28 | 19.08 / 6.12 |
Ratio of driving wheelbase to overall engine wheelbase | 0.59 | 0.59 |
Overall Wheelbase (engine & tender) (ft / m) | / 13.02 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 27,440 / 12,447 | |
Weight on Drivers (lbs / kg) | 75,040 / 34,038 | 81,536 / 36,984 |
Engine Weight (lbs / kg) | 86,464 / 39,219 | 91,616 / 47,399 |
Tender Loaded Weight (lbs / kg) | 67,445 / 37,289 | |
Total Engine and Tender Weight (lbs / kg) | 86,464 / 39,219 | 159,061 / 84,688 |
Tender Water Capacity (gals / ML) | 2400 / 11.67 | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | / 5 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 | 45 / 22.50 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 40 / 1016 | 54 / 1372 |
Boiler Pressure (psi / kPa) | 140 / 9.70 | 180 / 12.40 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15.5" x 20" / 394x508 | 17" x 24" / 432x610 |
Tractive Effort (lbs / kg) | 14,295 / 6484.11 | 19,652 / 8914.01 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.25 | 4.15 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 166 - 1.875" / 48 | 206 - 1.875" / 48 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 10.38 / 3.16 | |
Firebox Area (sq ft / m2) | 73 / 6.78 | 89 / 8.27 |
Grate Area (sq ft / m2) | 13 / 1.21 | 19.50 / 1.81 |
Evaporative Heating Surface (sq ft / m2) | 795 / 73.88 | 1147 / 106.56 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 795 / 73.88 | 1147 / 106.56 |
Evaporative Heating Surface/Cylinder Volume | 182.01 | 181.92 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 1820 | 3510 |
Same as above plus superheater percentage | 1820 | 3510 |
Same as above but substitute firebox area for grate area | 10,220 | 16,020 |
Power L1 | 2479 | 4090 |
Power MT | 218.49 | 331.76 |