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Prussian T 51
German Reichsbahn class 710-1
Germany | 1895 | 329 produced
Die Lokomotive, April 1924

Under the designation T 5, the Prussian State Railways combined tank locomotives for passenger transport, some of which differed significantly from one another, and which had been procured between 1880 and 1905. The wheel arrangements 2-4-2 with fixed and movable carrying axles, 4-4-0, 0-6-0 and 2-6-0 were used. The most numerous sub-variants were the T 51 and T 52, the former of which was built from 1895 for the suburban railways of Berlin.

In order to achieve an increase in performance compared to the older machines used there, another carrying axle was added. To improve the driving characteristics in the sometimes narrow curves, the wheelbase of the two coupled axles was made relatively short and the two running axles were designed as Adams axles, which could be moved sideways and radially.

By 1905, Henschel had manufactured 309 engines for Prussia, and between 1907 and 1921, 20 more almost identical but slightly lighter Hanomag units came to Oldenburg. After the advent of more powerful engines, the T 51 were withdrawn from the Berlin suburban railways and distributed to branch lines in various parts of Prussian territory. Despite the good running qualities in curves, the running smoothness at higher speeds was not sufficient for efficient use on main lines.

The Oldenburg T 5<sup>1</sup> number 280 “Nadorst” became 71 420 in the Reichsbahn
The Oldenburg T 51 number 280 “Nadorst” became 71 420 in the Reichsbahn
collection Oliver Westerhoff / www.laenderbahn.info

As with other locomotives from this period, the already reduced number of T 51 fell sharply between the conception of the Reichsbahn's renumbering plan and the actual renumbering. In 1923, for example, 115 engines were assigned a number in the 710-1 range, but in 1925 only 26 units were renumbered. Five years later the last ones were gone.

General
Built1895-1905
ManufacturerHenschel
Axle config2-4-2WT (Columbia) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length38 ft 4 1/16 in
Wheelbase22 ft 3 11/16 in
Fixed wheelbase6 ft 6 3/4 in
Empty weight91,492 lbs
Service weight117,131 lbs
Adhesive weight69,225 lbs
Axle load34,613 lbs
Water capacity1,506 us gal
Fuel capacity4,409 lbs (coal)
Power
Power sourcesteam
Estimated power402 hp (300 kW)
Optimal speed16 mph
Top speed47 mph
Starting effort15,895 lbf
Power Plant
Driver diameter63 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 16 15/16 x 23 5/8 in
Boiler
Grate area16.9 sq ft
Firebox area71 sq ft
Tube heating area951.5 sq ft
Evaporative heating area1,022.6 sq ft
Total heating area1,022.6 sq ft
Calculated Values
steam locomotive
passenger
suburban
tank locomotive
last changed: 01/2022
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