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Tender Locomotives 2-4-0 “Porter” or “Old English”
UIC Classification 1B and 1'B
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The GWR Leo class was one of the first locomotives with this wheel arrangement.
The GWR Leo class was one of the first locomotives with this wheel arrangement.
Locomotive Magazine, May 1901

The wheel arrangement 2-4-0 designates a steam locomotive with one leading axle and two coupled axles. This design was manufactured over a very long period of time and was used equally on goods, passenger and express trains. In different countries, this wheel arrangement is referred to as follows:

Porter, Old English

UIC: 1B

Whyte: 2-4-0

Switzerland: 2/3

France: 120

Turkey: 23

Depending on their area of application they were created either by adding another coupled axle to the 2-2-0 wheel arrangement or by substituting the trailing axle of a 2-2-2 for an additional coupled axle. They were characterized by significantly better traction and, thanks to the additional axle, could also carry a larger boiler. In order to be able to negotiate curves, the first coupled axle was usually manufactured without wheel flanges. The first engines entered service around 1840 for service with goods trains with relatively small driving wheels

The leading axle, which was still present, provided sufficient guidance when entering curves at track speed. In the beginning, the firebox of the very long and thin boiler was often still behind the rear driving axle, which is also called “overhanging firebox” and tended to lead to rather unsteady running. Soon only the design with a “supported firebox” was being built, with the firebox located between the coupled wheels. Since now there were no heavy masses behind the last axle, this improved running characteristics at high speeds.

Over the years, locomotives appeared which had larger wheels and could also be used to pull passenger trains. In Great Britain in particular, the variant with the leading axle fixed in the frame was able to prove itself at higher speeds, since the tracks there were laid with great care. In addition, the cylinders were almost always on the inside and behind the leading axle and thus hardly transmitted any disturbing movements to the rails. Joseph Beattie began to introduce express locomotives with the LSWR in 1859, such as the Clyde class, which had seven foot wheels and hauled the heaviest and fastest express trains up until the 1870s.

In the 1890s, a large number of locomotives with a 2-4-0 wheel arrangement were still being built, but now almost exclusively for passenger and express trains. Above all, Great Britain was still ahead, because there the rather light trains had to achieve high speeds. The situation was completely different in the USA, where the 4-4-0 “American” was quickly adopted due to the mostly cheaper construction of the tracks. For this reason, the locomotives described here were rarely found on standard-gauge main lines, but mostly only on narrow-gauge railways or in industrial companies. Since most of these locomotives were delivered by H.K. Porter, the name “Porter” for the wheel arrangement 2-4-0 became established in the US naming system.

Only in a few cases the leading axle could be moved radially, which meant that the wheel arrangement was designated as 1'B in UIC notation to distinguish it. This type of construction was used so rarely because stable running characteristics can only be guaranteed if the leading axle is being returned to the central position with sufficient force. The few examples include the Bavarian B X and the Saxon IIIb V and VIb V.

Goods locomotive of the KFNB of the series from “Tiberius” to “Pilades” with an overhanging firebox, built from 1856
Goods locomotive of the KFNB of the series from “Tiberius” to “Pilades” with an overhanging firebox, built from 1856
The Centaur class or Improved Clyde of the LSWR was part of a successful series of locomotives with seven-foot wheels.
The Centaur class or Improved Clyde of the LSWR was part of a successful series of locomotives with seven-foot wheels.
flickr/Historical Railway Images
The Prussian P 3<sup>1</sup> was built until 1907 and was one of the last 2-4-0 locomotives for passenger trains on main lines
The Prussian P 31 was built until 1907 and was one of the last 2-4-0 locomotives for passenger trains on main lines
Alsace-Lorraine A 8 and A 9
later P 2
Germany | 1874
42 produced
Image of locomotive
flickr/Historical Railway Images

Due to an urgent need for locomotives, the Alsace–Lorraine Imperial Railways turned to other manufacturers in 1874. So they ordered 16 2-4-0 passenger locomotives from Kitson at Leeds and 26 from Esslingen. Originally, the British locomotives were designated A 8 and the German locomotives were designated A 9. In the system introduced in 1906, they were renamed P 2.

They had a raised Belpaire firebox, a huge steam dome and a capuchon chimney with a lip on the forward edge. Originally they only had a Ricour type steam brake, but got air brakes later. Despite a driver diameter of only 5 ft 9 in (1,752 mm), they were also used in express service. Their withdrawals started in World War I and were completed by 1920.

General
Built1874
ManufacturerKitson & Co., Esslingen
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase14 ft 5 1/4 in
Rigid wheelbase14 ft 5 1/4 in
Service weight85,319 lbs
Adhesive weight55,997 lbs
Axle load27,999 lbs
Water capacity2,510 us gal
Fuel capacitycoal
Boiler
Grate area15.7 sq ft
Evaporative heating area1,105 sq ft
Total heating area1,105 sq ft
Power Plant
Driver diameter68.98 in
Boiler pressure145 psi
Expansion typesimple
Cylinderstwo, 16 15/16 x 22 11/16 in
Power
Power sourcesteam
Estimated power402 hp (300 kW)
Optimal speed22 mph
Top speed53 mph
Starting effort11,613 lbf
Calculated Values
steam locomotive
passenger
express
last changed: 09/2024
Altenburg-Zeitz No. 1 to 5
Saxon II
Germany | 1872
5 produced
Former number 5 “Rositz” with new number 749 of the Saxon State Railways
Former number 5 “Rositz” with new number 749 of the Saxon State Railways

The Altenburg-Zeitz railway company was founded in 1870 in the Duchy of Saxony-Altenburg to transport lignite from the Meuselwitz-Rositz mining area. In addition to transporting the lignite, passenger transport and other freight transport also had to be handled. For this reason, locomotives had to be procured that could handle both freight and passenger transport for the small company.

The five locomotives purchased by Borsig for this purpose had 1,525 mm coupling wheels and a leading axle mounted fixed in the frame. Other features included inside valve gear and a rudimentary cab. Between 1880 and 1888, five more tank and tender locomotives were procured. When the Altenburg-Zeitz railway company was nationalized in 1896, all machines were taken over. The numbers 1 to 5 were classified in the Saxon type II and provided with the numbers 745 to 749. The last three units survived until 1922 and were not given new numbers by the Reichsbahn.

General
Built1872, 1875
ManufacturerBorsig
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length46 ft 7 1/4 in
Wheelbase10 ft 9 1/2 in
Rigid wheelbase10 ft 9 1/2 in
Empty weight65,036 lbs
Service weight73,855 lbs
Adhesive weight53,793 lbs
Axle load26,896 lbs
Fuel capacitycoal
Boiler
Grate area16.1 sq ft
Firebox area78.6 sq ft
Tube heating area1,127 sq ft
Evaporative heating area1,205.6 sq ft
Total heating area1,205.6 sq ft
Power Plant
Driver diameter60.04 in
Boiler pressure123 psi
Expansion typesimple
Cylinderstwo, 17 x 22 1/16 in
Power
Power sourcesteam
Estimated power369 hp (275 kW)
Optimal speed21 mph
Starting effort11,133 lbf
Calculated Values
steam locomotive
passenger
freight
last changed: 01/2022
Baden IV b
Germany | 1873
20 produced
Factory photo of one of the machines after the conversion
Factory photo of one of the machines after the conversion

Since the locomotives from the early days were no longer powerful enough, newer ones with an 2-4-0 wheel arrangement were procured from Maffei in Munich. 20 of these were delivered from 1873 and were based on the Bavarian locomotives. It is noteworthy that from 1888 all of them were converted to tank locomotives with an 2-4-2T wheel arrangement and remained in use as such.

In order to increase the output, following the trend of the time, the grate area was enlarged without significantly increasing the dimensions of the boiler. A further increase in power was achieved through a higher boiler pressure, which had become possible due to new materials and production techniques. The locomotives had an external frame and external cylinders, but internal Stephenson-type valve gear. Braking, as was usual at the time, was done with mechanical transmission only to the wheels of the locomotive.

After a few years of operation, it became apparent that the adhesive weight was too low and the running characteristics with the long rear overhang were no longer up to date. Therefore, the locomotives were equipped with a trailing axle and turned into tank locomotives, while most parts remained the same. Because the weight of the boiler feed water was now acting on the couple axles, the adhesive weight increased. In addition, more powerful boilers of the Baden type were used later and the brakes were replaced with a modern air brake system of the Westinghouse type.

The conversion was completed on all locomotives in 1892 and extended their operating life beyond what the original tender locomotives would have achieved. The decommissioning began in 1901, the last locomotive was taken out of service in 1910.

Variantas builtrebuilt tank locomotive
General
Built1873-18741888-1892
ManufacturerMaffei
Axle config2-4-0 (Porter) 2-4-2T (Columbia) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length46 ft 11 in34 ft 4 11/16 in
Wheelbase11 ft 2 1/16 in17 ft 0 3/4 in
Rigid wheelbase11 ft 2 1/16 in
Empty weight63,493 lbs
Service weight72,752 lbs118,829 lbs
Adhesive weight48,502 lbs60,407 lbs
Axle load24,251 lbs30,203 lbs
Water capacity1,783 us gal1,585 us gal
Fuel capacitycoal6,614 lbs (coal)
Boiler
Grate area16.5 sq ft
Firebox area73.7 sq ft
Tube heating area1,093.1 sq ft
Evaporative heating area1,166.8 sq ft
Total heating area1,166.8 sq ft
Variantas builtrebuilt tank locomotive
Power Plant
Driver diameter65.95 in
Boiler pressure130 psi
Expansion typesimple
Cylinderstwo, 17 1/8 x 24 in
Power
Power sourcesteam
Estimated power369 hp (275 kW)
Optimal speed20 mph
Top speed37 mph
Starting effort11,848 lbf
Calculated Values
steam locomotive
passenger
tank locomotive
last changed: 01/2022
Baden XI
later V a
Germany | 1860
22 produced
Side view of a locomotive with a two-axle tender
Side view of a locomotive with a two-axle tender
works photo MBG Karlsruhe

The locomotives of type XI were four-coupled tender locomotives with a leading axle for freight train service, which were procured from 1860 by the Grand Duchy of Baden State Railways. They were characterized by relatively large wheels, which allowed them to be used in front of passenger trains if necessary. From 1868 it was called V a.

The locomotives were equipped with a Crampton boiler, which protruded beyond the first and last axle. Initially, the saturated steam was only extracted from a regulator attachment directly on the upper edge of the boiler, which at times led to water being fed into the cylinders. Thus, all engines of the later deliveries received a steam dome

The wheel sets were mounted within an outer frame, so the power was transmitted via Hall cranks to the first coupled axle. With a driving wheel diameter of 1,524 mm it was ensured that at the top speed of 40 km/h low rotational speeds and smooth running were still guaranteed. The leading axle was rigidly mounted, but in view of the short overall wheelbase and the low speeds, this did not entail any particular disadvantages.

The primary operational areas of the XI were the Baden main line from Mannheim to Constance and the Odenwald line, which branched off from the main line in the direction of Würzburg. In addition to shunting services in the port of Mannheim, the deployment increasingly shifted to secondary routes with the commissioning of more powerful engines, where they benefited above all from the low axle load. In the mid-1890s, the remaining 18 of the 22 examples were withdrawn within a short period of time. One of them was converted into a tank locomotive in 1875, but it was to remain a one-off.

General
Built1860-1863
ManufacturerMBG Karlsruhe
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length42 ft 9 11/16 in
Wheelbase11 ft 3 13/16 in
Rigid wheelbase11 ft 3 13/16 in
Empty weight59,525 lbs
Service weight67,241 lbs
Adhesive weight46,297 lbs
Axle load23,149 lbs
Water capacity1,485 us gal
Fuel capacitycoal
Boiler
Grate area10.4 sq ft
Firebox area60.7 sq ft
Tube heating area1,012.9 sq ft
Evaporative heating area1,073.6 sq ft
Total heating area1,073.6 sq ft
Power Plant
Driver diameter60 in
Boiler pressure116 psi
Expansion typesimple
Cylinderstwo, 16 x 24 in
Power
Power sourcesteam
Estimated power168 hp (125 kW)
Optimal speed11 mph
Top speed25 mph
Starting effort10,083 lbf
Calculated Values
steam locomotive
freight
last changed: 01/2022
Bavarian B IX
German Reichsbahn class 3474
Germany | 1874
104 produced
Cutaway model in the Deutsches Museum in Munich
Cutaway model in the Deutsches Museum in Munich
MPW57

In 1869 and 1870, some locomotives with the wheel arrangements 2-2-2 and 4-2-0 (Crampton) were converted into four-coupled ones in order to increase the tractive effort for the increased loads in express traffic. Four locomotives with 0-4-2 wheel arrangement were then ordered and assigned to class B IX, but soon sold to the Reichseisenbahnen Alsace-Lorraine. Finally, in 1874, Maffei began to manufacture the new B IX, which had a 2-4-0 wheel arrangement and was thus the first four-coupled express locomotive in Bavaria to be procured in series.

Since at that time engineers had already come to the realization that overhanging masses impair the running properties at high speeds, attempts were made to reduce them as much as possible. With the B VIII, which was built in small numbers, experience had already been gained with a firebox whose center of gravity was directly above the second coupled axle, and this feature was adopted with the B IX. In order to also minimize the front overhangs, the cylinders were moved as close as possible to the leading axle. Like the previous series, the B IX had an outer frame, internal Stephenson valve gear and external cylinders. Due to its smooth running, it could be approved for 90 km/h and, with a train weight of 150 tonnes, reached a speed of 70 km/h on the flat.

A total of 104 engines were made between 1874 and 1887. After the end of the First World War, they were no longer used in high-value express service, but the remaining units with the numbers 34 7421 to 34 7440 were included in the Reichsbahn's provisional renumbering plan. However, the new numbers did not need to be attached, since the last machines were retired in 1925. Today, the locomotive with the number 1000 can be viewed as a cutaway model in the Lokwelt Freilassing, a branch of the Deutsches Museum in Munich.

General
Built1874-1887
ManufacturerMaffei
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length45 ft 9 5/8 in
Service weight74,075 lbs
Adhesive weight48,502 lbs
Axle load25,574 lbs
Water capacity2,774 us gal
Fuel capacity11,023 lbs (coal)
Boiler
Grate area16.1 sq ft
Evaporative heating area952.6 sq ft
Total heating area952.6 sq ft
Power Plant
Driver diameter73.62 in
Boiler pressure145 psi
Expansion typesimple
Cylinderstwo, 16 x 24 in
Power
Power sourcesteam
Estimated power402 hp (300 kW)
Optimal speed25 mph
Top speed56 mph
Starting effort10,272 lbf
Calculated Values
steam locomotive
express
last changed: 01/2022
Cambrian Railways Mazeppa class
Great Britain | 1863
12 produced
Image of locomotive
Locomotive Magazine, September 1904

Starting in 1863, Sharp, Stewart & Co. not only delivered some goods locomotives with a 0-6-0 wheel arrangement to the newly founded Cambrian Railways, but also twelve locomotives with a 2-4-0 wheel arrangement. The driving wheels were not particularly large at 66 inches, but they were used for passenger and express trains. Although relatively small for their time and not particularly fast, the engines were richly decorated with large amounts of brass. From 1890 they were fitted with a new boiler and a driver's cab. Two locomotives were converted to tank locomotives from 1908. So far there is only a short text for this vehicle. In the future it will be described in more detail.

Variantas builtrebuilt
General
Built1863-18641890
ManufacturerSharp, Stewart & Co.Cambrian
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase14 ft 3 in
Rigid wheelbase7 ft 9 in
Service weight55,552 lbs60,480 lbs
Adhesive weight37,250 lbs40,880 lbs
Total weight104,272 lbs109,200 lbs
Axle load21,168 lbs22,400 lbs
Water capacity1,441 us gal
Fuel capacity6,720 lbs (coal)
Boiler
Grate area11.6 sq ft
Firebox area71.4 sq ft
Tube heating area843.6 sq ft893.6 sq ft
Evaporative heating area915 sq ft965 sq ft
Total heating area915 sq ft965 sq ft
Variantas builtrebuilt
Power Plant
Driver diameter66 in
Boiler pressure120 psi150 psi
Expansion typesimple
Cylinderstwo, 16 x 20 in
Power
Power sourcesteam
Estimated power200 hp (149 kW)250 hp (186 kW)
Optimal speed16 mph
Starting effort7,913 lbf9,891 lbf
Calculated Values
steam locomotive
passenger
express
last changed: 04/2023
Emperor Ferdinand Northern Railway “Koloss” and “Elephant”
later series I No. 308 and 309
Austria-Hungary | 1844
2 produced
“Koloss”
“Koloss”

After the KFNB had ordered the first five freight locomotives in the 0-4-2 wheel arrangement in England at the end of the 1830s, they began to manufacture their own freight locomotives in Wiener Neustadt in 1844. Based on the 4-2-0 type from Norris, the bogie was converted into a fixed frame part and the second leading axle was replaced with a coupled axle. The cylinders continued to be fixed in an inclined position next to the smokebox and still drove the rear axle. Because of the low-lying boiler, the deep firebox reached just above the top of the rails.

The engines were given the names “Koloss” and “Elephant” and were delivered in 1844. In 1853 and 1865 they received new boilers with a larger heating surface. Although they were normally only known by their names, they were internally numbered 43 and 44. According to the new scheme from 1869, they were classified as Series I and given the numbers 308 and 309. They were phased out two years later.

Variantas builtnew boiler
General
Built18441853
ManufacturerWiener Neustadt
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length24 ft 8 5/16 in
Wheelbase11 ft 7 in
Rigid wheelbase11 ft 7 in
Empty weight48,502 lbs
Service weight54,234 lbs54,454 lbs
Adhesive weight39,904 lbs
Fuel capacitycoal
Boiler
Grate area9.9 sq ft12.1 sq ft
Firebox area66.7 sq ft80.7 sq ft
Tube heating area749.2 sq ft803 sq ft
Evaporative heating area815.9 sq ft883.7 sq ft
Total heating area815.9 sq ft883.7 sq ft
Variantas builtnew boiler
Power Plant
Driver diameter46.46 in
Boiler pressure99 psi91 psi
Expansion typesimple
Cylinderstwo, 15 x 22 1/8 in
Power
Power sourcesteam
Estimated power134 hp (100 kW)148 hp (110 kW)
Optimal speed10 mph11 mph
Starting effort8,981 lbf8,325 lbf
Calculated Values
steam locomotive
freight
last changed: 10/2022
Empress Elisabeth Railway series A III
Imperial-Royal State Railways class 7
Austria-Hungary | 1879
8 produced
No. 46 “Fünfhaus” before being redesignated by the kkStB
No. 46 “Fünfhaus” before being redesignated by the kkStB

In the years 1879 and 1880, the Kaiserin-Elisabeth-Bahn procured a total of eight more 2-4-0 express locomotives from the workshops of the state railway company. The requirements specified were that 100 tonnes should be towed at 55 km/h or 200 tonnes at 27.5 km/h on a gradient of one percent. In order to achieve the necessary train loads on the curve radii from 280 meters, a great deal of development effort was put into the locomotives. This also included the Haswell corrugated iron firebox, which was only used in the 1870s and was not able to establish itself beyond that.

The biggest difference to the existing series I and II was that the diameter of the dring wheels was increased from 1,580 to 1,900 mm. Although the top speed was only increased from 70 to 80 km/h, this improved smooth running at higher speeds and reduced consumption and wear. The reduced pulling power due to the significantly larger wheels was compensated for by a higher boiler pressure of ten bars and a slightly larger cylinder diameter. In addition, it was about seven tonnes heavier than the KEB II and thus had a larger adhesive weight

All in all, the A III was the most powerful of all Austrian 2-4-0 locomotives and also outperformed many 4-4-0 locomotives well into the 1890s. They were taken over by the kkStB in 1883 and initially referred to as A III. Later they became class 7 and got the numbers 7.01 to 7.08. The BBÖ also took over six more after the First World War and retired them between 1922 and 1929.

General
Built1879-1880
ManufacturerStEG
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length29 ft 2 5/8 in
Wheelbase14 ft 5 1/4 in
Rigid wheelbase7 ft 8 1/2 in
Empty weight82,232 lbs
Service weight92,594 lbs
Adhesive weight62,170 lbs
Axle load31,306 lbs
Water capacity2,774 us gal
Fuel capacity14,330 lbs (coal)
Boiler
Grate area26 sq ft
Firebox area96.9 sq ft
Tube heating area1,116.2 sq ft
Evaporative heating area1,213.1 sq ft
Total heating area1,213.1 sq ft
Power Plant
Driver diameter74.8 in
Boiler pressure145 psi
Expansion typesimple
Cylinderstwo, 17 1/8 x 24 7/8 in
Power
Power sourcesteam
Estimated power570 hp (425 kW)
Optimal speed30 mph
Top speed50 mph
Starting effort12,024 lbf
Calculated Values
steam locomotive
express
last changed: 01/2022
Schematic drawing with dimensions
Schematic drawing with dimensions
Die Lokomotive, June 1936
Empress Elisabeth Railway series I and II
Imperial-Royal State Railways classes 12 and 21
Austria-Hungary | 1858
84 produced
KEB I as kkStB 12.20 with driver's cab and Kobel chimney
KEB I as kkStB 12.20 with driver's cab and Kobel chimney
Hermann von Littrow

In 1851, Bavaria and Austria had sealed a state treaty that several railways should be built to connect the two countries. A total of 54 Series I express locomotives were procured for the first line to be opened from Vienna via Linz to Salzburg. The locomotives were built in several workshops: 18 in the Wiener Neustadt locomotive factory, 24 by the Staats-Eisenbahngesellschaft factory and six by Sigl. It was not until 1863 that the last six pieces followed from the KEB's own workshop. After the entire route had been opened, a big party was held in the Vienna Augarten on August 15, 1860, which was also attended by the passengers of the first train that had arrived from Munich via Salzburg with a Series I locomotive.

As was usual at the time, the locomotives did not have a driver's cab. Proper cabs were only retrofitted later, as were Kobel chimneys to protect against flying sparks. Despite the driving wheel diameter of only 1,580 mm, they were initially used in express train services.

Between 1869 and 1872, 30 more Series II locomotives followed, most of which had been manufactured by the KEB workshop. They had the same driving wheel diameter and the same wheel arrangement, but were slightly heavier. Both series were equipped with outside cylinders, but the series I still had an inner frame and the series II had an outer frame. The boiler pressure was now nine instead of seven bars. The engineer Johann Zeh installed the so-called Zehn flap, with the help of which one could direct air into the cylinders when the regulator was closed and whose compression could be used as an additional brake.

In the 1880s, the Series I locomotives received new boilers that could be operated at 10 bars. The grate area was increased and the heating surface decreased, which improved their relation to each other and brought the boiler into line with the II series. These too were later operated with ten bars. The Series I locomotives survived with the k.k. State railways as series 12 until 1904, their successors became series 21, even came to the BBÖ and were retired in 1928.

VariantIII
General
Built1858-18631869-1872
ManufacturerWiener Neustadt, StEG, Sigl, KEBWiener Neustadt, StEG
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length27 ft 7 3/4 in29 ft 8 15/16 in
Wheelbase11 ft 2 13/16 in11 ft 2 3/4 in
Rigid wheelbase5 ft 5 3/8 in5 ft 5 13/16 in
Empty weight65,698 lbs69,225 lbs
Service weight73,414 lbs78,044 lbs
Adhesive weight49,163 lbs52,029 lbs
Water capacity2,245 us gal2,774 us gal
Fuel capacity9,921 lbs (coal)14,330 lbs (coal)
Boiler
Grate area14.5 sq ft20.9 sq ft
Firebox area79.7 sq ft85 sq ft
Tube heating area1,338 sq ft1,249.7 sq ft
Evaporative heating area1,417.6 sq ft1,334.7 sq ft
Total heating area1,417.6 sq ft1,334.7 sq ft
VariantIII
Power Plant
Driver diameter62.21 in
Boiler pressure102 psi130 psi
Expansion typesimple
Cylinderstwo, 16 9/16 x 24 7/8 in
Power
Power sourcesteam
Estimated power335 hp (250 kW)469 hp (350 kW)
Optimal speed23 mph25 mph
Top speed40 mph43 mph
Starting effort9,481 lbf12,190 lbf
Calculated Values
steam locomotive
express
last changed: 04/2022
Schematic drawing of the Series I as delivered
Schematic drawing of the Series I as delivered
Die Lokomotive, September 1907
French Eastern Railway Series 4 No. 501 to 562
France | 1878
62 produced
An ebgube of the third batch, No. 523 to 542 from Wiener Neustadt
An ebgube of the third batch, No. 523 to 542 from Wiener Neustadt
Die Lokomotive, November 1920

Although the Crampton locomotive enjoyed long popularity in France in general and with the Est in particular, it reached its limits in the late 1870s. Thus, Regray initially had seven locomotives made with 2-4-0 wheel arrangement. Since the Belpaire firebox ended with the rear on the second coupled axle and the 2.31 meter diameter wheels were still very large, the locomotives were referred to as “coupled cramptons” or “super cramptons”. On numbers 508 to 510, the firebox was pulled further forward so that it lay between the coupled axles. The locomotives had a double outer frame in which the cylinders were situated.

After the first ten examples had been manufactured in the Est workshops in Épernay in 1878 and 1879, the next 32 examples were ordered from commercial suppliers. The numbers 511 to 522 came from Cail in Paris in 1881 and the 523 to 542 in 1882 from the Wiener Neustädter Lokomotivfabrik. Their wheels were only 2.10 meters tall and the cylinders were slightly smaller. They also featured a conventional firebox that was larger than the previous Belpaire firebox

A third series of 20 examples was made again in Épernay in 1884 and 1885. These were given a larger boiler, which exceeded the 100 square meter mark for the tubular heating surface. This enabled them to achieve a boiler output that was greater than that of contemporary locomotives with a 2-4-2 or 4-4-0 wheel arrangement. Furthermore, they had received a larger tender that, in addition to the three tons of coal, could hold up to 13 cubic meters of water instead of the ten cubic meters of the older tenders. Traction was later increased on 48 of the 52 examples in the last two series by reducing the wheel diameter to 1.83 metres.

Numbers 508 and 509 were converted to a Flaman boiler in 1888, which could hold a maximum number of smoke tubes with two barrels. Since the front axle was heavily loaded after the conversion, the carrying axle was replaced with a bogie. Since the results of the conversions did not justify the high effort, no other engines were converted in this way. The engines with smaller coupled wheels were soon increasingly used in ordinary passenger train service and were partly used until 1936. The first of the non-converted examples, on the other hand, had already been retired in 1906.

Variant501-510511-542543-5622511-2562 - smaller wheels
General
Built1878-18791881-18821884-1885
ManufacturerÉpernayCail, Wiener NeustadtÉpernayCail, Wiener Neustadt, Épernay
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length47 ft 0 3/4 in
Length loco27 ft 8 1/16 in27 ft 9 7/16 in29 ft 5 3/4 in
Wheelbase17 ft 6 5/8 in
Rigid wheelbase17 ft 6 5/8 in
Empty weight31,568 lbs31,645 lbs
Service weight92,241 lbs88,229 lbs100,817 lbs
Adhesive weight63,206 lbs62,038 lbs67,814 lbs
Total weight145,152 lbs119,094 lbs163,980 lbs
Axle load32,871 lbs31,129 lbs34,921 lbs
Water capacity3,434 us gal
Fuel capacity6,614 lbs (coal)
Boiler
Grate area18.6 sq ft25.6 sq ft25.8 sq ft
Firebox area86.1 sq ft96.4 sq ft98.3 sq ft
Tube heating area910.6 sq ft911.1 sq ft1,099.1 sq ft
Evaporative heating area996.7 sq ft1,007.5 sq ft1,197.4 sq ft
Total heating area996.7 sq ft1,007.5 sq ft1,197.4 sq ft
Variant501-510511-542543-5622511-2562 - smaller wheels
Power Plant
Driver diameter90.95 in82.68 in83.07 in72.01 in
Boiler pressure130 psi145 psi160 psi
Expansion typesimple
Cylinderstwo, 17 11/16 x 25 3/16 intwo, 16 15/16 x 24 13/16 intwo, 17 5/16 x 24 in
Power
Power sourcesteam
Estimated power335 hp (250 kW)469 hp (350 kW)536 hp (400 kW)570 hp (425 kW)
Optimal speed22 mph31 mph32 mph27 mph
Top speed56 mph
Starting effort9,647 lbf9,537 lbf10,693 lbf13,569 lbf
Calculated Values
steam locomotive
express
Flaman boiler
last changed: 09/2022
No. 503 (first batch)
No. 503 (first batch)
Locomotive Magazine, September 1923
No. 512 (second batch) rebuilt with smaller wheels and new number 2512
No. 512 (second batch) rebuilt with smaller wheels and new number 2512
Locomotive Magazine, September 1923
No. 508 with 4-4-0 wheel arrangement and Flaman boiler
No. 508 with 4-4-0 wheel arrangement and Flaman boiler
Locomotive Magazine, September 1923
Showing 1 to 10 of 36
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