Data from De Nederlandse Museummaterieel Database, located at [], last accessed 23 September 2011.
The DMD site explains that this design was supplied to several Dutch cities to operate on their tramways and other light local passenger lines. They were based on an earlier HSM design, but were bigger to permit speeds of up to 50 km/h (31 mph). Holland's Werkspoor delivered the first 18, which were followed by 12 from Henschel & Sohn, 9 more from Werkspoor, and 5 from Schwartzkopff. They were nicknamed "Haarlemmermeertjes" or "Bello". Museumstoomtram Hoorn-Medemblik (SHM) notes that 7742 at least was equipped not with the usual warning whistle, but with a bell that rang. (North American locomotives ring a separate bell when they approach a station platform.) NB: Driver diameter is estimated based on reported tractive effort.
Principal Dimensions by Steve Llanso of Sweat House Media | |
---|---|
Class | Bello / NS 7700 |
Locobase ID | 13188 |
Railroad | Hollandsche IJzeren Spoorweg Mij. (HIJSM) |
Country | Netherlands |
Whyte | 0-6-0T |
Number in Class | 44 |
Road Numbers | 7701-7744 |
Gauge | Std |
Number Built | 44 |
Builder | several |
Year | 1914 |
Valve Gear | Allan |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | |
Engine Wheelbase (ft / m) | |
Ratio of driving wheelbase to overall engine wheelbase | |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 62,832 / 28,500 |
Engine Weight (lbs / kg) | 62,832 / 28,500 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 62,832 / 28,500 |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 35 / 17.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 57.10 / 1450 |
Boiler Pressure (psi / kPa) | 174 / 12 |
High Pressure Cylinders (dia x stroke) (in / mm) | 12.99" x 21.65" / 330x550 |
Tractive Effort (lbs / kg) | 9463 / 4292.35 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.64 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | |
Grate Area (sq ft / m2) | 13.45 / 1.25 |
Evaporative Heating Surface (sq ft / m2) | 572 / 53.20 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 572 / 53.20 |
Evaporative Heating Surface/Cylinder Volume | 172.24 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2340 |
Same as above plus superheater percentage | 2340 |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |