The reference for locomotives and railcars


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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
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

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
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
Fixed 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)
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
Power Plant
Driver diameter90.9 in82.7 in83.1 in72 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
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
Calculated Values
steam locomotive
Flaman boiler
last changed: 09/2022

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