Data from "The Haarlemmermeer Local Railways, Holland", Locomotive M-agazine, Volume XXVII [27] (15 September 1921), pp. 236-239. See Locobase 20829 for a history of this railway system.
LM reported in 1921 that the HSM ordered this quartet to handle increased traffic demand that the 0-6-0T L3s shown in Locobase 20829 struggled to work.
An obvious difference between the L3s and the 1101s was the replacement of the leading driven axle with an Adams radial axle carrying a leading truck with 800 mm (2 ft 7 1/2 in) wheels. In an unusual variation from the usual sequence, Walschaert gear working inside replaced Stephenson gear working outside on the L3s. 1101s featured a sizable superheater and Knorr feed water heater.
Werkspoor's superheater was made up 32 elements laid out in horizontal rows of 4-6-6-6-4 top to bottom. Each element occupied adjacent tubes, each of which had two runs of superheater tubes in a loop that turned at the firebox end. LM explained that each pair of elements presented four openings in a single flange connecting them to the superheater chamber. These four "go free through the flange and are welded to two special fittings, each taking two tube ends." A single 1 1/8" (28 mm) bolt held the flange against lugs and formed a steam-tight join. In a small locomotive, so many elements presented a nominally huge amount of superheater area, but Locobase wonders how much of the area was actually excess.)
Locobase suspects he demise of passenger service in 1950 led to the withdrawal of these four engines.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1101 |
| Locobase ID | 20830 |
| Railroad | Haarlemmermeer Light Railway |
| Country | Netherlands |
| Whyte | 2-4-0T |
| Number in Class | 28 |
| Road Numbers | 1101-1104 |
| Gauge | Std |
| Number Built | 28 |
| Builder | Werkspoor |
| Year | 1920 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.02 / 2.75 |
| Engine Wheelbase (ft / m) | 18.04 / 5.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | 18.04 / 5.50 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 148,150 / 67,200 |
| Engine Weight (lbs / kg) | 207,411 / 94,080 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1082 / 4.10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 123 / 61.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 53.10 / 1350 |
| Boiler Pressure (psi / kPa) | 169.70 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.17" x 19.69" / 360x500 |
| Tractive Effort (lbs / kg) | 10,740 / 4871.59 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 13.79 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 55 - 1.752" / 44.5 |
| Flues (number - dia) (in / mm) | 64 - 1.752" / 44 |
| Flue/Tube length (ft / m) | 8.86 / 2.70 |
| Firebox Area (sq ft / m2) | 64.58 / 6 |
| Grate Area (sq ft / m2) | 12.49 / 1.16 |
| Evaporative Heating Surface (sq ft / m2) | 549 / 51 |
| Superheating Surface (sq ft / m2) | 291 / 27 |
| Combined Heating Surface (sq ft / m2) | 840 / 78 |
| Evaporative Heating Surface/Cylinder Volume | 152.76 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2120 |
| Same as above plus superheater percentage | 2861 |
| Same as above but substitute firebox area for grate area | 14,795 |
| Power L1 | 14,588 |
| Power MT | 434.17 |