Data from R Herbert La Page, "On Compound Locomotives", Railway Engineer, Vol X, No 3 (March 1889), pp. 67-79.
Herbert wrote that this engine was one of six Moguls sent out to the Entre Rios and the only one to use the von Borries-Worsdell cross-compound system then coming into vogue. The key feature in the design was the automatic intercepting valve that allowed live steam into the LP cylinder for starting and used the exhaust steam to close that valve once the locomotive began moving.
(Locobase cannot confirm that the other five used two 16" x 24" cylinders.)
Herbert's long article goes into considerable detail about the advantages of compounding and, given its relatively early publication, is a valuable look at the burgeoning stud of two-cylinder compounds in several countries.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | unknown |
Locobase ID | 15859 |
Railroad | Entre Rios |
Country | Argentina |
Whyte | 2-6-0 |
Number in Class | 1 |
Road Numbers | |
Gauge | Std |
Number Built | 1 |
Builder | Dubs & Co |
Year | 1886 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 13.50 / 4.11 |
Engine Wheelbase (ft / m) | 20.67 / 6.30 |
Ratio of driving wheelbase to overall engine wheelbase | 0.65 |
Overall Wheelbase (engine & tender) (ft / m) | 45.96 / 14.01 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 97,000 / 43,999 |
Engine Weight (lbs / kg) | 110,000 / 49,895 |
Tender Loaded Weight (lbs / kg) | 90,000 / 40,823 |
Total Engine and Tender Weight (lbs / kg) | 200,000 / 90,718 |
Tender Water Capacity (gals / ML) | 4800 / 18.18 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 45 / 1143 |
Boiler Pressure (psi / kPa) | 175 / 1210 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 (1) |
Low Pressure Cylinders (dia x stroke) (in / mm) | 23" x 24" / 584x610 (1) |
Tractive Effort (lbs / kg) | 13,686 / 6207.87 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.09 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 171 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 10.25 / 3.12 |
Firebox Area (sq ft / m2) | 104 / 9.66 |
Grate Area (sq ft / m2) | 18 / 1.67 |
Evaporative Heating Surface (sq ft / m2) | 1016 / 94.39 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1016 / 94.39 |
Evaporative Heating Surface/Cylinder Volume | 363.83 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 3150 |
Same as above plus superheater percentage | 3150 |
Same as above but substitute firebox area for grate area | 18,200 |
Power L1 | 3494 |
Power MT | 238.24 |