Andaluces 4-8-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class 240-2001 (Locobase 3379)

Data from http://www . eltren.com/aficionados/todo_sobre/ficha_tech and [link] (28 April 2003). See also Manuel Jesus Martinez Selva, "La Traccion vapor en el Ferrocarril Bobadilla-Algeciras", Euphoros #2 (1998), pp. 62.

The first 15 in the class had three-axle tenders that held 3,150 gal of water and 4.4 tons of coal. Three builders contributed units of the class: Franco-Belge (the first 15, works numbers 2148-2162), Borsig (works numbers were 11183-11197), Schwartzkopff (works numbers were 7645-7654), and Hanomag (works numbers were 9779-9788).

All had Belpaire fireboxes. Martinez Selva says the first 15 were assigned to the Granada sheds while the other 35 were based at Cordoba. As Locobase translates him, Maritinez Selva adds that the class had "an antiquated design and a profile (aspecto) resembling that of a 19th Century locomotive." They were rated at 70 km/h (45 mph) on the level.


Class 240-2431 (Locobase 3387)

Data from [link], the web site of the Spanish National Railway. See also Manuel Jesus Martinez Selva, "La Traccion vapor en el Ferrocarril Bobadilla-Algeciras", Euphoros #2 (1998), pp. 62.

Pere Comas, whose Paleontologia Vaporosa posts on the family tree of Spanish 4-8-0s are referenced in Locobase 3382, says that in addition to the increased tonnage of each freight experienced by theAndaluces, which led to the railway's adoption of a 4-8-0 Mastodon arrangement, it also suffered from very tight curve alignments and steep grades between Bobadilla and Algeciras. Martinez Selva spells out the challenge of climbing to Setenil (one of the highest points on the Bobadilla-Algeciras section), saying that starting at Jimena (kilometre post 42, elevation 48 metres above sea level), the rise over the next 64 km (39.7 miles) totalled 740 metres (2,428 feet). From Bobadilla to Setenil, 53 km (32.9 miles) of line rose 402 metres (1,319 feet). So the average gradient over this long stretch was 1%.

Their solution was based on the MZA's "Mastodontus Ibericus" and which Comas identifies as a subspecies "Mastodontus Ibericus Andalucensis". To cope with the steep grades, the designers adopted a relatively small driver diameter. Although this limited maximum speed to 50-60 km/h, Martinez Selva notes, that limitation represented a small sacrifice on a line that didn't call for high speeds.

The first 25 were delivered from MTM in 1926-1927. In 1942-1943, Devis S.A. supplied 15 more to Andaluces' successor RENFE.

Principal Dimensions by Steve Llanso of Middle Run Media
Class240-2001240-2431
Locobase ID3379 3387
RailroadAndalucesAndaluces
CountrySpainSpain
Whyte4-8-04-8-0
Number in Class5035
Road Numbers401-450 / 240.2001-20504201-4235/240.2431-2465
Gauge5'6"5'6"
Number Built5035
Builderseveralseveral
Year19211926
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)19.36 / 5.9015.58 / 4.75
Engine Wheelbase (ft / m)30.94 / 9.4327.97 / 8.53
Ratio of driving wheelbase to overall engine wheelbase 0.63 0.56
Overall Wheelbase (engine & tender) (ft / m)54.02 / 16.4758.19 / 17.73
Axle Loading (Maximum Weight per Axle) (lbs / kg)28,351 / 12,86038,801 / 17,600
Weight on Drivers (lbs / kg)109,702 / 49,760154,092 / 69,895
Engine Weight (lbs / kg)147,202 / 66,770196,828 / 89,280
Tender Loaded Weight (lbs / kg)76,721 / 34,800110,231 / 50,000
Total Engine and Tender Weight (lbs / kg)223,923 / 101,570307,059 / 139,280
Tender Water Capacity (gals / ML)3900 / 14.775201 / 19.70
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.90 / 4 6.60 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 2364 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63.80 / 162155.50 / 1410
Boiler Pressure (psi / kPa)188.50 / 1300188.50 / 1300
High Pressure Cylinders (dia x stroke) (in / mm)22.05" x 26" / 560x66024.41" x 25.98" / 620x660
Tractive Effort (lbs / kg)31,747 / 14400.2144,690 / 20271.07
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.46 3.45
Heating Ability
Tubes (number - dia) (in / mm)114 - 1.97" / 50211 - 1.969" / 50
Flues (number - dia) (in / mm)24 - 5.25" / 13326 - 5.236" / 133
Flue/Tube length (ft / m)15.58 / 4.7516.40 / 5
Firebox Area (sq ft / m2)151.72 / 14.10176.53 / 16.40
Grate Area (sq ft / m2)37.66 / 3.5049.08 / 4.56
Evaporative Heating Surface (sq ft / m2)1665 / 154.742355 / 218.77
Superheating Surface (sq ft / m2)484 / 44.98629 / 58.46
Combined Heating Surface (sq ft / m2)2149 / 199.722984 / 277.23
Evaporative Heating Surface/Cylinder Volume144.89167.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation70999252
Same as above plus superheater percentage873211,194
Same as above but substitute firebox area for grate area35,17740,264
Power L111,82511,026
Power MT950.56631.00

All material Copyright © SteamLocomotive.com
Wes Barris