Madrid, Zaragoza & Alicante 4-6-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class 230-4104 (Locobase 3359)

Data from [link], the web site of the Spanish National Railway. See also Pere Comas, Breve Historia de la Traccion Vapor en MZA, Trensim TS10H002, Julio de 2011., p.109.

These were the two Ten-wheelers from the original set of ten delivered in 1911 with saturated boilers (Locobase 3375).


Class 651/230-4001 (Locobase 3358)

Data from [link] . See also Pere Comas, Breve Historia de la Traccion Vapor en MZA, Trensim TS10H002, Julio de 2011,p. 106-107; and MATERIAL MOTOR RENFE 1947 diagram book posted by carlos lavagoneta arroba and retrieved from Picasa [link], last accessed 1 June 2014., p. 93. Hanomag works numbers were Hanomag 3654-3668 in 1901. Henschel's fifteen arrived in 1903. (Comas's guide does not have the works numbers.)

German-built four-cylinder compounds that, like the Norte's simple Ten-wheelers, arrived on MZA rails in the first decade of the 20th Century and, in many cases, saw the end of steam many years later. They featured Belpaire boilers, outside HP cylinders, large steam dome over the rear bogie axle, smaller sand dome between the steam dome and the firebox, and a lipped stack.

They were originally delivered with three-axle tenders that were later replaced by tenders riding on two bogie trucks.

A total of 105 was built. This first group of 30 were produced by Maffei and Henschel; see Locobase 3375 for the later group.


Class 801/230-4031 (Locobase 3375)

Data from [link] . Henschel works numbers were 6997-7021 in 1905, 8338-8347 in 1907, 8929-8938 in 1908, 10075-10084 in 1910. Maffei works numbers were 3250-3259 in 1911. Hanomag's works numbers, also in 1911, were 5933-5942.

Repeats of the successful 1901 compound (see 230-4001) , these engines likewise came from German builders. Henschel and Maffei added to the numbers they'd supplied earlier and they were joined by Hanomag for this later group. Deliveries came in 1907 and 1910-1911.

Two of the very last batch--871 and 874--are described as "equipped with superheated boiler"; their data are in Locobase 3359.

Principal Dimensions by Steve Llanso of Middle Run Media
Class230-4104651/230-4001801/230-4031
Locobase ID3359 3358 3375
RailroadMadrid, Zaragoza & Alicante (MZA)Madrid, Zaragoza & Alicante (MZA)Madrid, Zaragoza & Alicante (MZA)
CountrySpainSpainSpain
Whyte4-6-04-6-04-6-0
Number in Class23075
Road Numbers871, 874651-680/230-4001 a 230-4030801-875/230-4031 a 230-4105
Gauge5'6"5'6"5'6"
Number Built23075
BuilderHanomagseveralseveral
Year191119011905
Valve GearWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.12 / 413.12 / 413.12 / 4
Engine Wheelbase (ft / m)24.93 / 7.6024.93 / 7.6024.93 / 7.60
Ratio of driving wheelbase to overall engine wheelbase 0.53 0.53 0.53
Overall Wheelbase (engine & tender) (ft / m)50.62 / 15.4348.09 / 14.6650.62 / 15.43
Axle Loading (Maximum Weight per Axle) (lbs / kg)35,549 / 16,12531,636 / 14,35033,069 / 15,000
Weight on Drivers (lbs / kg)104,775 / 47,52594,468 / 42,85097,885 / 44,400
Engine Weight (lbs / kg)153,001 / 69,400134,702 / 61,100142,198 / 64,500
Tender Loaded Weight (lbs / kg)105,822 / 48,00093,542 / 42,430105,822 / 48,000
Total Engine and Tender Weight (lbs / kg)258,823 / 117,400228,244 / 103,530248,020 / 112,500
Tender Water Capacity (gals / ML)5280 / 204419 / 16.745201 / 19.70
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 5.50 / 5 4.40 / 4 5.50 / 5
Minimum weight of rail (calculated) (lb/yd / kg/m)58 / 2952 / 2654 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)68.90 / 175068.90 / 175068.90 / 1750
Boiler Pressure (psi / kPa)198.70 / 1370203.10 / 1400203.10 / 1400
High Pressure Cylinders (dia x stroke) (in / mm)13.78" x 25.59" / 350x65013.78" x 25.59" / 350x65013.78" x 25.59" / 350x650
Low Pressure Cylinders (dia x stroke) (in / mm)21.65" x 25.59" / 550x65021.65" x 25.59" / 550x65021.65" x 25.59" / 550x650
Tractive Effort (lbs / kg)16,954 / 7690.2117,330 / 7860.7717,330 / 7860.77
Factor of Adhesion (Weight on Drivers/Tractive Effort) 6.18 5.45 5.65
Heating Ability
Tubes (number - dia) (in / mm)165 - 1.969" / 50196 - 1.969" / 50196 - 1.969" / 50
Flues (number - dia) (in / mm)24 - 5.236" / 133
Flue/Tube length (ft / m)13.45 / 4.1013.45 / 4.1013.45 / 4.10
Firebox Area (sq ft / m2)147.90 / 13.74123.79 / 11.50123.79 / 11.50
Grate Area (sq ft / m2)29.49 / 2.7429.49 / 2.7429.49 / 2.74
Evaporative Heating Surface (sq ft / m2)1620 / 150.501345 / 124.911345 / 124.95
Superheating Surface (sq ft / m2)495 / 46
Combined Heating Surface (sq ft / m2)2115 / 196.501345 / 124.911345 / 124.95
Evaporative Heating Surface/Cylinder Volume366.75304.49304.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation586059895989
Same as above plus superheater percentage720759895989
Same as above but substitute firebox area for grate area36,14725,14225,142
Power L114,26142014201
Power MT900.22294.12283.85

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