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).
Some B1 remained in service into the 1990s, with N17 still being on call for switching duties.
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 Middle Run 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 / 970 | 180 / 1240 |
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 |