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Staatsspoorwegen series 995
Dutch Railways series 2000
Netherlands | 1900 | 5 produced
NS No. 2001, ex No. 995
NS No. 2001, ex No. 995
flickr/Historical Railway Images

For the heavy mail trains between Germany and England, which crossed the area of the Staatsspoorwegen, the locomotives of the 300 series with a 2-4-0 wheel arrangement were soon no longer sufficient to manage without double heading. Beyer, Peacock & Co. used their own designs of the 4-4-0 wheel arrangement as a basis and added a trailing axle to accommodate a longer firebox and to keep the axle load below the required 15 tons. However, the trailing axle was not radially adjustable, but only had lateral play.

Although the locomotives could reach high speeds with heavy mail trains, the running smoothness left a lot to be desired. What was even more dramatic was that they dealt damage to the superstructure and thus even had to be stored for several months. With the number 995, the bogie was moved forward by eight inches, but this did not bring a sufficient improvement. As a result, the engines were initially only used on routes with a high axle load limit and the maximum speed later had to be limited to 80 km/h. In the meantime, a superheater has been retrofitted.

No. 997 on an old color photo
No. 997 on an old color photo

When the SS and the HSM merged their vehicle fleet in 1921, the five locomotives were given the numbers 2001 to 2005. There, too, attempts were made to improve the running characteristics and the 2005 was given a series 3700 bogie. Since this also did not have the desired effect, the locomotives were transferred to goods service. Their service ended there between 1930 and 1932. Only the 2005 was converted into a brake van for measuring trains and was used in this role until 1955.

Variantas builtsuperheated
General
Built1900
ManufacturerBeyer, Peacock & Co.
Axle config4-4-2 (Atlantic) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length63 ft 7 11/16 in
Wheelbase26 ft 10 13/16 in
Fixed wheelbase8 ft 2 7/16 in
Empty weight134,482 lbs136,686 lbs
Service weight144,403 lbs147,710 lbs
Adhesive weight65,036 lbs66,139 lbs
Total weight248,020 lbs251,327 lbs
Axle load32,518 lbs33,069 lbs
Water capacity4,804 us gal
Fuel capacity11,199 lbs (coal)
Power
Power sourcesteam
Estimated power939 hp (700 kW)1,140 hp (850 kW)
Optimal speed35 mph43 mph
Starting effort17,092 lbf
Power Plant
Driver diameter84 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 19 x 26 in
Boiler
Grate area31.1 sq ft
Firebox area172.2 sq ft
Tube heating area1,593.1 sq ft1,054.9 sq ft
Evaporative heating area1,765.3 sq ft1,711.5 sq ft
Superheater area430.6 sq ft
Total heating area1,765.3 sq ft2,142 sq ft
Calculated Values
steam locomotive
express
last changed: 10/2022
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