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Prussian T 8
German Reichsbahn classes 890 and 8910
Germany | 1906 | 100 produced
Die Lokomotive, April 1924

The T 8 was developed because the six-coupled T 3 and T 7 tank locomotives used at the beginning of the century had become too slow for track use at 45 km/h. It was slightly heavier than the T 7, worked with superheated steam and was designed for 60 km/h.

Due to the fact that it had no carrying axles and therefore larger overhanging masses were present, the running characteristics were unsatisfactory at higher speeds. Even increasing the wheelbase did not produce the desired results, which contradicted the actual reason for purchasing the T 8.

Former number 7001 in May 1993 in Potsdam
Former number 7001 in May 1993 in Potsdam
MPW57

A total of 100 examples were delivered by three manufacturers, 78 of which were taken over by the Reichsbahn in 1925 as numbers 89 001 to 89 078. There, however, they were soon only used in shunting service and were soon sold to private railways, including the Bayerische Lokalbahn AG. The locomotives from the latter came back to the Reichsbahn after nationalization in 1938 and were classified as 89 1001 and 89 1002, since the class 89 had meanwhile been reassigned to a standard locomotive. Two more from Mecklenburg were given the road numbers 1003 and 1004, but all were decommissioned shortly afterwards. After the war, the Reichsbahn of the GDR only took over two examples as 89 6476 and 89 6576, which had previously been owned by private railways. They were in use until 1964, a third example was a works locomotive on the Bundesbahn stock and was used until 1965.

General
Built1906-1909
ManufacturerLinke-Hofmann, O&K, Hanomag
Axle config0-6-0T (Six-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length31 ft 0 7/16 in
Wheelbase11 ft 1 7/8 in
Fixed wheelbase11 ft 1 7/8 in
Empty weight78,925 lbs
Service weight100,751 lbs
Adhesive weight100,751 lbs
Axle load34,172 lbs
Water capacity1,321 us gal
Fuel capacity3,086 lbs (coal)
Power
Power sourcesteam
Estimated power469 hp (350 kW)
Optimal speed12 mph
Top speed37 mph
Starting effort25,471 lbf
Power Plant
Driver diameter53.2 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 19 11/16 x 23 5/8 in
Boiler
Grate area15.9 sq ft
Firebox area80.7 sq ft
Tube heating area655.8 sq ft
Evaporative heating area736.6 sq ft
Superheater area176.5 sq ft
Total heating area913.1 sq ft
Calculated Values
steam locomotive
freight
tank locomotive
last changed: 01/2022
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