Noord-Friesche Locaal-Spoorwegmaatschappij 2-4-2 Locomotives in Netherlands
Class Details by Steve Llanso of Sweat House Media
Class 1/1051/7100 (Locobase 20087)
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.
These ten engines provided the power for the NFLS's secondary-line passenger service. Except for the 7110, which was retired in 1925, and the 7107 in 1939, the class operated throughout World War II.
The 7104 and 7105 were taken into Germany's DRG service and suffered damage that led to their withdrawal in 1947. 7102 and 7109 were destroyed in the Netherlands. 7101, 7103 and 7106 (and 7108, whose damage in German service was repaired) were retired in 1949.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1/1051/7100 |
| Locobase ID | 20087 |
| Railroad | Noord-Friesche Locaal-Spoorwegmaatschappij (NFLS) |
| Country | Netherlands |
| Whyte | 2-4-2T |
| Number in Class | 10 |
| Road Numbers | 1-10/1051-1060/7101-7110 |
| Gauge | Std |
| Number Built | 10 |
| Builder | Hohenzollern |
| Year | 1900 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.56 / 2 |
| Engine Wheelbase (ft / m) | 19.03 / 5.80 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.34 |
| Overall Wheelbase (engine & tender) (ft / m) | 19.03 / 5.80 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,967 / 14,500 |
| Weight on Drivers (lbs / kg) | 48,281 / 21,900 |
| Engine Weight (lbs / kg) | 95,240 / 43,200 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1188 / 4.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 59.80 / 1520 |
| Boiler Pressure (psi / kPa) | 176.90 / 1220 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 22.05" / 380x560 |
| Tractive Effort (lbs / kg) | 12,408 / 5628.18 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.89 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 75.35 / 7 |
| Grate Area (sq ft / m2) | 15.28 / 1.42 |
| Evaporative Heating Surface (sq ft / m2) | 936 / 87 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 936 / 87 |
| Evaporative Heating Surface/Cylinder Volume | 208.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2703 |
| Same as above plus superheater percentage | 2703 |
| Same as above but substitute firebox area for grate area | 13,329 |
| Power L1 | 5160 |
| Power MT | 471.23 |