Data from Gavin Hamilton's excellent compilation of Garratt data posted at [] (6 September 2005; and A[rthur] E[dward] Durrant, Garratt Locomotives of the World (revised edition) (Newton Abbott, UK: David & Charles, 1981), pp 38-39. Works numbers were 421-422 in 1931.
Identical to Hanomag Double Prairie Garratt of 1929 (Locobase 781). The second locomotive in the pair was named Jose Ma. de Basterra-Ortiz. Like most other non-Beyer Peacock Garratts, the Hanomags and B&Ws had round top boilers. Resembling the South African GF class, wrote Durrant, they presented a "rather long and drawn out" profile. Relatively flat and long water tanks extended to both sides ahead and behind the boiler and cab section. To handle the tight curves both engine units used flangeless center drivers
Data from Gavin Hamilton's excellent compilation of Garratt data posted at []
(6 September 2005); and A[rthur] E[dward] Durrant, Garratt Locomotives of the World (revised edition) (Newton Abbott, UK: David & Charles, 1981), p. 38-39. Works numbers 10646-10647 in 1929.
Double Prairie Garratts for a metre-gauge railway. Babcock & Wilcox built two more in 1931; see Locobase 782. On the new gradient between León and Matallana, the Garratts often added their power to the railway's Linke-Hoffman 2-6-2Ts.
Adhesion and engine weight are a conversion of 73.18 and 108.03 tons, respectively, multiplied by 2,240 (assuming that the weights are long tons). In most cases in his table, the fraction is clearly the decimal equivalent of hundredweight. One cannot tell in a few instances.
The second locomotive was named the Jose J. de Ampuro.
Principal Dimensions by Steve Llanso of Middle Run Media | ||
---|---|---|
Class | Enrique de Borda | Venancio de Echeverria |
Locobase ID | 782 | 781 |
Railroad | La Robla Railway | La Robla Railway |
Country | Spain | Spain |
Whyte | 2-6-2+2-6-2 | 2-6-2+2-6-2 |
Number in Class | 2 | 2 |
Road Numbers | 82-83 | 80-81 |
Gauge | Metre | Metre |
Number Built | 2 | 2 |
Builder | Babcock & Wilcox | Hanomag |
Year | 1931 | 1929 |
Valve Gear | Walschaert | |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 8.53 / 2.60 | |
Engine Wheelbase (ft / m) | ||
Ratio of driving wheelbase to overall engine wheelbase | ||
Overall Wheelbase (engine & tender) (ft / m) | 65.62 / 20 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 28,224 / 12,802 | 28,224 / 12,802 |
Weight on Drivers (lbs / kg) | 163,922 / 74,354 | 163,922 / 74,354 |
Engine Weight (lbs / kg) | 241,988 / 109,764 | 241,988 / 109,764 |
Tender Loaded Weight (lbs / kg) | ||
Total Engine and Tender Weight (lbs / kg) | ||
Tender Water Capacity (gals / ML) | 3960 / 15 | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8.80 / 8 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 46 / 23 | 46 / 23 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 42 / 1067 | 42 / 1067 |
Boiler Pressure (psi / kPa) | 185.60 / 1280 | 185.60 / 1280 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.61" x 21.69" / 422x551 (4) | 16.61" x 21.69" / 422x551 (4) |
Tractive Effort (lbs / kg) | 44,955 / 20391.27 | 44,955 / 20391.27 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.65 | 3.65 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | ||
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | ||
Firebox Area (sq ft / m2) | 129.06 / 11.99 | 129.06 / 11.99 |
Grate Area (sq ft / m2) | 34.55 / 3.21 | 34.55 / 3.21 |
Evaporative Heating Surface (sq ft / m2) | 1550 / 144 | 1550 / 143.96 |
Superheating Surface (sq ft / m2) | 388 / 36.05 | 388 / 36.06 |
Combined Heating Surface (sq ft / m2) | 1938 / 180.05 | 1938 / 180.02 |
Evaporative Heating Surface/Cylinder Volume | 142.47 | 142.47 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 6412 | 6412 |
Same as above plus superheater percentage | 7695 | 7695 |
Same as above but substitute firebox area for grate area | 28,744 | 28,744 |
Power L1 | 6792 | 6792 |
Power MT | 548.08 | 548.08 |