Data from Bijlage 19, "Locomotieven NFLS 1-10 en 531-545", downoaded from [], last accessed 9 August 2016. Works numbers were 1376-1381 in 1901 and 1533-1534, 1539-1540 in 1902.
Five years after the NFLS bought ten double-ended tanks for local traffic (Locobase 20087), the SS, which now operated those locomotives, went back to their German builder for very similar engines that had more water capacity because of added tankage below the coal bunker. Like the first set, the maximum speed was 80 kph (50 mph).
They received NS numbers 7111-7125 in 1921.
7114 was withdrawn in 1925 and 7116 left service in 1936. 7124 was used to block German troop movements during the opening day of the German invasion of the Netherlands on 10 May 1940 and was destroyed. 7113 was damaged late in World War II and did not return to service.
7117, 7118, 7120, 7122 and 7123 all were taken into the German DRG after the Netherlands surrendered. Because of damage incurred in that service, none was returned to Dutch service. All but 7123 were scrapped in 1947; 7123 was broken up in Hagenow in 1951. The rest all retired in1948.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 531/7111 |
Locobase ID | 20088 |
Railroad | StaatsSpoorwegen (SS) |
Country | Netherlands |
Whyte | 2-4-2T |
Number in Class | 15 |
Road Numbers | 531-545/7111-7125 |
Gauge | Std |
Number Built | 15 |
Builder | Hohenzollern |
Year | 1907 |
Valve Gear | Alco-Richmond |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 6.56 / 2 |
Engine Wheelbase (ft / m) | 19.69 / 6 |
Ratio of driving wheelbase to overall engine wheelbase | 0.33 |
Overall Wheelbase (engine & tender) (ft / m) | 19.69 / 6 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 54,983 / 24,940 |
Engine Weight (lbs / kg) | 108,026 / 49,000 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 1584 / 6 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 46 / 23 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 60.60 / 1539 |
Boiler Pressure (psi / kPa) | 171.10 / 1180 |
High Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 22.05" / 380x560 |
Tractive Effort (lbs / kg) | 11,843 / 5371.90 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.64 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | 78.04 / 7.25 |
Grate Area (sq ft / m2) | 15.28 / 1.42 |
Evaporative Heating Surface (sq ft / m2) | 939 / 87.24 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 939 / 87.24 |
Evaporative Heating Surface/Cylinder Volume | 209.32 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2614 |
Same as above plus superheater percentage | 2614 |
Same as above but substitute firebox area for grate area | 13,353 |
Power L1 | 5121 |
Power MT | 410.67 |