Data from [] . This class includes locomotives supplied to three component railways and produced by five different builders -- a "standard" locomotive in many respects that differed only slightly in adhesion weight among the railroads. Note that the factor of adhesion at the specified MEP is quite low. RENFE uses 65% of nominal pressure (vs the more common 85%), which yields 39,480 lb and an FofA of 4.4.
Oeste road numbers run 2401-2405, Andaluces 4251-4255; [] doesn't specify the MZA's range. RENFE's range covers 247 locomotives, but 2476-2480 were not delivered. Deliveries were interrupted by the Spanish Civil War and resumed in 1942. Builders, all Iberian, included MTM (Barcelona), Euskalduna (Bilbao), Babcock & Wilcox, Devis, and Macosa. Six more from MTM went to Portugal in 1947 as their 831-836.
In Lineas Del Tren (#290, 5 May 2003) [Por que llegaron a Espana las 1-4-1 Mikados francesas? reproduced on [], accessed 7 Dec 2005], Angel Maestro credits this class with handling 400 tonnes of fast freights over the El Escorial-La Canada line, which featured a ruling grade of 2.1%. 2.1%. On the flatter profile between Venta de Banos and Valladolid, they were rated at 850 tonnes. These numbers compare well with virtually all other contemporary Spanish locomotives.
Pere Comas, whose Paleontologia Vaporosa posts on the family tree of Spanish 4-8-0s are referenced in Locobase 3382, identifies these as the ultimate expression of the original "Mastodontus Ibericus" that originally entered service on the MZA in 1921 (see Locobase 3384). When MZA added 5 locomotives with "Elephant Ears", they created, according to Comas, "Mastodontus Ibericas Otorrinus".
The Andaluces 4250 class "Mastodontus Ibericus Patanegris" was the immediate inspiration for the RENFE's considerably upgraded species he dubs "Mastodontus Ibericus Ibericus" (aka "Renfes"). Comas comments: "Su perfil, con las pantallas deflectoras caracteristicas, configuraran la silueta de las locomotora espanola por excelencia."
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | 240-2471 |
Locobase ID | 3388 |
Railroad | RENFE |
Country | Spain |
Whyte | 4-8-0 |
Number in Class | 242 |
Road Numbers | 2471-2717 |
Gauge | 5'6" |
Number Built | 242 |
Builder | several |
Year | 1935 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 20.34 / 6.20 |
Engine Wheelbase (ft / m) | 46.70 / 14.23 |
Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
Overall Wheelbase (engine & tender) (ft / m) | 67.11 / 20.45 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 44,974 / 20,400 |
Weight on Drivers (lbs / kg) | 173,724 / 78,800 |
Engine Weight (lbs / kg) | 233,249 / 105,800 |
Tender Loaded Weight (lbs / kg) | 185,629 / 84,200 |
Total Engine and Tender Weight (lbs / kg) | 418,878 / 190,000 |
Tender Water Capacity (gals / ML) | 8839 / 33.48 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 11 / 10 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 72 / 36 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 64.20 / 1630 |
Boiler Pressure (psi / kPa) | 246.60 / 1700 |
High Pressure Cylinders (dia x stroke) (in / mm) | 24.02" x 27.95" / 610x710 |
Tractive Effort (lbs / kg) | 52,651 / 23882.12 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.30 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 197 - 1.969" / 50 |
Flues (number - dia) (in / mm) | 30 - 5.236" / 133 |
Flue/Tube length (ft / m) | 17.88 / 5.45 |
Firebox Area (sq ft / m2) | 194.83 / 18.10 |
Grate Area (sq ft / m2) | 56.51 / 5.25 |
Evaporative Heating Surface (sq ft / m2) | 2519 / 234 |
Superheating Surface (sq ft / m2) | 794 / 73.80 |
Combined Heating Surface (sq ft / m2) | 3313 / 307.80 |
Evaporative Heating Surface/Cylinder Volume | 171.84 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 13,935 |
Same as above plus superheater percentage | 17,280 |
Same as above but substitute firebox area for grate area | 59,576 |
Power L1 | 19,150 |
Power MT | 972.08 |